Computer Systems Status (archived)

21 December 2022 — Scheduled Downtime

Beginning at 06:00 AM the ML cluster (ml00.cs) will undergo a configuration change that will require users to connect with the campus VPN or use a ssh jump host first.

17 August 2022 — Scheduled Downtime

Beginning at 06:00 AM the departmental DNS server (pendragon.cs) will be down due to system software upgrades. The downtime should be approximately one hour. During that time, some users may have issues with hostname resolution.

6 August 2022 — Scheduled Downtime

Beginning at 09:00 PM the departmental file server (riker.cs) will be down due to system software upgrades. The downtime should be approximately one hour. During that time, all home directory services for undergraduate users will be unavailable.

3 August 2022 — Unscheduled Downtime

The WADE power plan chiller has malfunctioned. This has significantly reduced the ability to cool some academic data centers, one being MATH B60. CS uses this space for some research group servers.

These servers were shut down at about 3PM to prevent over heating and damage to the servers.

bandit
db1
db2
db3
deeper
eva0
eva1
eva2
eva3
eva4
eva5
gpu1
nvmemul
topgraph
trojai2
trojai3

Cooling services were restored and the servers rebooted about 6PM.

30 July 2022 — Scheduled Downtime

(NOTE - This was originally scheduled for 8p, and has been pushed back to 10p). Beginning at 10:00 PM the departmental file server (madoc.cs) will be down due to system software upgrades. The downtime should be approximately one hour. During that time, all home directory services for most faculty/staff users will be unavailable.

14 July 2022 — Scheduled Downtime

Beginning at 6:00 PM Science IT staff will be doing maintenance on the SERVERS domain controllers that will require that they be down for an extended period of time. There are two servers -- primary and backup. Only one will be down at a time, so there should be no interruption in service. SERVERS is the legacy CS Windows domain. It is only used by a few machines. Both servers should be returned to service by 8:00 AM July 15.

8 July 2022 — Scheduled Downtime

Beginning at 5:30 PM Science IT staff will be doing maintenance on the SERVERS domain controllers that will require that they be down for an extended period of time. There are two servers -- primary and backup. Only one will be down at a time, so there should be no interruption in service. SERVERS is the legacy CS Windows domain. It is only used by a few machines. Both servers should be returned to service by 8:00 AM July 9.

11 June 2022 — Scheduled Downtime

Beginning at 08:00 PM the departmental web server (pythia.cs) will be down due to system software upgrades. The downtime should be approximately one hour. During that time, all web services will be unavailable.

10 June 2022 — Scheduled Downtime

Beginning at 08:00 PM the departmental wiki server (legion.cs) will be down due to system softwae upgrades. The downtime should be approximately one hour. During that time, all departmental, research and course wikis will be unavailable.

26 May 2022 — Scheduled Downtime

ITaP Networking will be performing software updates on campus network switches in LWSN on Thursday, May 26 between 12:01 AM and 03:00 AM. During this time there will be disruptions to wired, wireless, and phone services.

Note: this is part of a campus-wide upgrade from May 18 through June 3. There may be disruptions with connections to other campus buildings and outside Purdue. This time is specific to networks in ~~HAAS~~LWSN.(corrected 5/23/2022)

20 May 2022 — Scheduled Downtime

ITaP Networking will be performing software updates on campus network switches in HAAS on Friday, May 20 between 12:01 AM and 03:00 AM. During this time there will be disruptions to wired, wireless, and phone services.

Note: this is part of a campus-wide upgrade from May 18 through June 3. There may be disruptions with connections to other campus buildings and outside Purdue. This time is specific to networks in HAAS.

03 March 2022 — Unscheduled Downtime

Mc17 is experiencing disk failure. The system will be unavailable until repairs are completed.

Mc17 was back on-line as of 7PM.

22 January 2022 — Scheduled Downtime

On Saturday, January 22nd the operating system on the departmental print server (print.cs) will be upgraded from Ubuntu 18.04 to 20.04. During this time, printing will be unavailable. The upgrade will begin @10p and should finish at approximately @11p.

8 January 2022 — Scheduled Downtime

On Saturday, January 8th the operating system and other system software on instructional servers data.cs, antor.cs, cuda.cs, mc17.cs, mc18.cs, mc19.cs, mc20.cs, mc21.cs, mctesla.cs and instructional lab hosts (LWSN B146, B148, B158, B160 and HAAS G040, G050, G056, 256) will be updated. During this time, logins will be unavailable. The upgrades will begin @10a and should finish at approximately @11a. Please save all work/data and logoff before 10a.

26 October 2021 — Software Update

On Tuesday, October 26th the default MATLAB will be switched from 9.8(2020a) to 9.11(2021b) No down time is expected. If you wish continue to use 2020a, you will need to run "module load matlab/2020a".

14 August 2021 — Scheduled Downtime

On Saturday, August 14th the operating system on instructional servers mc17.cs and mc18.cs will be upgraded from Ubuntu 18.04 to 20.04. During this time, logins will be unavailable. The upgrades will begin @10p and should finish at approximately @11p. Please save all work/data and logoff before 10p.

13 August 2021 — Scheduled Downtime

On Friday, August 13th the operating system on instructional GPU servers cuda.cs and mctesla.cs and graduate student server antor.cs will be upgraded from Ubuntu 18.04 to 20.04. During this time, logins will be unavailable. The upgrades will begin @10p and should finish at approximately @11p. Please save all work/data and logoff before 10p.

11 August 2021 — Software Update

On Wednesday, August 11th the default CUDA lmod module will be switched from CUDA 10.2 to 11.2. No down time is expected. If you wish continue to use 10.2, you will need to run "module load cuda/10.2".

10 August 2021 — Scheduled Downtime

On Tuesday, August 10th the operating system on data.cs.purdue.edu will be upgraded from Ubuntu 18.04 to 20.04. During this time, logins will be unavailable. The upgrade should finish at approximately 7p.

21 July 2021 — Scheduled Downtime

From 06:00a to 8:00a various research networks in LWSN will unavailable for network hardware maintenance. Some CS resources should be considered inaccessible.

14 July 2021 — Scheduled Downtime

From 04:00a to 8:00a various research networks in LWSN will unavailable for network maintenance. This is part of a multi-week migration and this week's networks will have direct impact on most IT-managed Linux machines. Some CS resources should be considered inaccessible.

7 July 2021 — Scheduled Downtime

From 06:00a to 8:00a various research networks in LWSN will unavailable for network hardware maintenance. Some CS resources should be considered inaccessible.

30 June 2021 — Scheduled Downtime

From 06:00a to 8:00a various research networks in LWSN will unavailable for network hardware maintenance. Some CS resources should be considered inaccessible.

23 June 2021 — Scheduled Downtime

From 06:00a to 7:00a CS camera and printer networks in LWSN will unavailable for network hardware maintenance. Some CS resources should be considered inaccessible.

18 June 2021 — Scheduled Downtime

Starting at 7:00a CS package server (ban.cs) will be down for a very brief (approximately 15 minutes) system maintenance. During this time, some network accessible software (i.e. MATLAB) may not be available.

16 June 2021 — Scheduled Downtime

From 12:05a to 1:00a CS networks in HAAS will unavailable for network hardware maintenance. Some CS resources should be considered inaccessible.

1 June 2021 — Scheduled Downtime

From 5a to 7a CS networks will unavailable for network hardware maintenance. All CS resources should be considered inaccessible.

26 May 2021 — Unscheduled Downtime

At 3:35p, GPU server cuda.cs became hung and unresponsive. It was rebooted, and retruned to service at ~4:00p.

15 May 2021 — Scheduled Downtime

Starting at 8:00AM, the file server ban.cs.purdue.edu will have system updates installed. The update is expected to take about 1 hour.

During this time, the filesystems served by ban will be unavailable:

/p/p1
/p/p2
/p/p4
/p/p5
/p/p7
/p/p8
/p/p9
/p/p15

11-12 May 2021 — Scheduled Downtime

ITaP will be doing a major upgrad on the the Data Depot storage system starting at 5:00PM on Tuesday May 11 and concluding around 11:00PM on May 12.

During this time the RCAC compute clusters will be unavailable.

More information is available on the RCAC news site
Data Depot Hardware Replacement and Migration
Whole-Floor Cluster Maintenance

23 January 2021 — Scheduled Downtime

Starting at 11:59p, GPU servers (cuda.cs and mctesla.cs) will have system updates installed. During this time, both servers will be unavailable. Any jobs running on the servers will be terminated.

17 January 2021 — Scheduled Downtime

CS servers (antor.cs, data.cs, madoc.cs, riker.cs) will have system updates installed from 7:00AM-8:00AM. During this time, most CS resources will be unavailable.

NOTE - this was rescheduled from 16 January 2021 10PM (EST)

12 January 2021 — Scheduled Downtime

CS networks will be unavailable from 6a to 6:30a while networking hardware is replaced. During this time, all CS resources will be unavailable.

9 December 2020 — Scheduled Downtime

Undergraduate file server (riker.cs) will be down to replace a failing memory module from 12p to 12:15p. During this time, all undergraduate logins will NOT be available on CS servers and lab hosts.

8 December 2020 — Unscheduled Downtime

Undergraduate file server (riker.cs) experienced a memory failure which crashed the server. It went down ~11:06p, and was back up ~11:15p.

8 December 2020 — Unscheduled Downtime

Undergraduate file server (riker.cs) experienced a memory failure which crashed the server. It went down ~11:06a, and was back up ~11:20a. The problem has been reported to CoS IT Hardware staff. DIMM will be replaced under warranty.

2 November 2020 — Scheduled Downtime

ITaP will be rebooting and making changes to the CS network firewall starting at 7AM. Work may take up to one hour.
During this time network connectivity outside LWSN and HAAS will be unavailable.

25 September 2020 — Scheduled Downtime

Starting at 4p, undergraduate file server (riker.cs) will be shutdown to replace a problematic RAM DIMM. The shudown should take no more than 30 minutes, and be available again by 4:30p During this outage, all undergraduate home directories will be unavailble. This will affect logins for all CS undergaduate students.

25 September 2020 — Unscheduled Downtime

Undergraduate file server (riker.cs) experienced a memory failure which crashed the server. It went down ~10:25a, and was back up ~10:30a. At some point in the near future, the DIMM will need to be replaced under warranty, which will require more down time.

9 September 2020 — Scheduled Downtime

The faculty/staff UNIX authentication server arthur.cs.purdue.edu will be down Wednesday, September 9 for some emergency maintenance starting at 10:30PM. It is expected to be back up by 11:30PM.

This will impact login to other UNIX/Linux systems as well as direct access to services on arthur.

6 September 2020 — Scheduled Downtime

Graduate fille server (antor.cs) and Faculty/Staff file server (madoc.cs) will be down while system updates are installed starting 12a. Downtime will be about 30 minutes.
This was originally scheduled for August 30 but was rescheduled due to issues with the Samba server.

23 August 2020 — Scheduled Downtime

Undergrad servers (data.cs and riker.cs) will be down while system updates are installed starting 12a. Downtime will be about 30 minutes.

11-14 August 2020 — Scheduled Downtime

LWSN and HAAS computer labs will be sporadically available while system updates are installed. Availability will be unreliable.

6-7 August 2020 — Scheduled Downtime

ITaP will be moving a fiber connection for LWSN starting at 11PM on August 6. This will disrupt VOIP phone service for up to 4 hours.

25-26 July 2020 — Scheduled Downtime

ITaP will be rebooting and making changes to the CS network firewall starting at 11PM. Work may take up to two hours.
During this time network connectivity outside LWSN and HAAS will be unavailable.

16-17 July 2020 — Scheduled Downtime

ITaP will be moving network connections for HAAS starting Thursday evening, July 16 and extending until early Friday morning.
WORK TO BE PERFORMED: The ITIS Network Operations Team will be moving the fiber connections for HAAS to the campus distribution routers on 07/16/2020 at 11:00 P.M.
AFFECTED SERVICES: The work will be performed in the TEL and LAMB data centers. Users in HAAS should expect to be without wired and wireless internet during this time. This will not affect HAAS-234 and HAAS-279 Machine Rooms.
SCOPE OF WORK: Sometime between 11:00 PM on 07/16/2020 and 3:00 AM on 07/17/2020 clients of the above listed 'AFFECTED SERVICES' should plan to experience disruption of those services. The expectation is that there will be a single disruption, lasting up to 240 minutes in duration.

15 July 2020 — Scheduled Downtime

Departmental authentication server arthur.cs.purdue.edu will be down for approximately 30 minutes starting at 7:00AM. It should return to service by 7:30AM.

8 July 2020 — Unscheduled Downtime

Departmental file server xinuserver.cs.purdue.edu began experiencing network connectivity issues about 14:43, and lost network connectivity completely at about 16:36. IT staff have been alerted.
The network switch power supply was replaced and xinuserver was back on line as of about 18:43

4 July 2020 — Scheduled Downtime

Departmental file server ban.cs, which provides several programs (ex. MATLAB), will be down for approximately one hour starting at 12a. It should resume to service by 1am.

27 June 2020 — Scheduled Downtime

Departmental file server newbors.cs, which provides several programs (ex. MATLAB), will be down for approximately one hour starting at 12a. It should resume to service by 1am.

23 May 2020 — Scheduled Downtime

The following CS departmental server will have their operating systems update Saturday @10p -

print.cs (printing services for all CS hosts)
vm[012].cs (virtual machine servers for CS department)

The OS update should take no more than two hours. Printing services and some virtual machines may be sporadically available during this time.

12 January 2020 — Scheduled Downtime

Undergad compute server data.cs will be rebooted at noon due to system updates. Service should be returned by 12:15p.

27 November 2019 — Scheduled Downtime

Undergad compute server data.cs and undergrad file server riker.cs will be down from 7AM until about 8AM to be down to reconfigure backend network connections. During this time, undergraduate student home directories will be unavailable.

7 October 2019 — Scheduled Downtime

Ector will be down from 7AM until about 8AM for a system move to another location in the datacenter. During this time authentication services for grad/research UNIX/Linux machines will be unavailable.

7-8 September 2019 — Scheduled Downtime

Computer Science departmental web-servers (www Sept. 7 and *-wiki Sept. 8) will be down, starting @midnight. During this time, server availability will be unreliable.

5 September 2019 — Unscheduled Downtime

Due to a misconfiguration on the undergraduate file server, issues arose beteween the NFS server (riker.cs) and clients (data.cs and other CS lab hosts). Restarting the server corrected the issue.

30 August 2019 — Unscheduled Downtime

The primary server for the XINU backend devices in HAAS 257 is off-line after the network switch replacement. ITaP has been contacted. There is no estimated time of repair.

The network connectivity was restored about 10:00. Some backend devices were still unavailable until a reboot of the server at about 11:30

29 August 2019 — Scheduled Downtime

ITaP Networking will be replacing network switches in HAAS 257 on Thursday, August 29 from 5:30PM until about 6:30PM. During this time the backend machines will be unavailable.

29 August 2019 — Scheduled Downtime

ITaP Networking will be replacing network switches in HAAS 257 on Thursday, August 29 from 5:30PM until about 6:30PM. During this time the backend machines will be unavailable.

27 August 2018 — Unscheduled Downtime

The CS web server (www.cs.purdue.edu) will be rebooted at 11:20AM to resolve NFS problems. It should be back up before 11:30AM.

18 August 2019 — Scheduled Downtime

antor.cs (graduate file server) will be down starting @6a for storage upgrades. The expected downtime will be 4-8 hours. During this time, all graduate student home directories will be unavailable. Any processes running on remote servers accessing files on antor will likely become unresponsive. Please save all work, kill off any processes and logout beforehand.

11 August 2019 — Scheduled Downtime

7 August 2019 — Scheduled Downtime

On Wednesday morning, August 7, between 5:30AM and 9:30AM, Computer Science servers and networking will be down for an infrastructure upgrade in our main data center.

Between 6AM and 8AM, electricians will be adding additional power whips to our main UPS in the data center. This will require that the power be turned off for the front row of racks. To facilitate the electricians' needs, IT staff will begin shutting down the servers in those racks at 5:30AM.

Servers will be returned to service when power has been restored.

In addition to servers, the power will be shut off to core network switches located in the racks. This means even though office computers and research computers in other locations will stay on, they will likely not have network access.

To avoid losing work, it is advised to save your work and log out of your computer before 5:30AM (i.e. when you leave work Tuesday) and not use your computer during this time, particularly the 6AM-8AM time while the network is down.

6 August 2019 — Scheduled Downtime

Arthur will be down from 9PM until about 10PM for a system move to another location in the datacenter. During this time authentication services for faculty and staff UNIX/Linux machines will be unavailable.

11 June 2019 — Software Update

The default version of Matlab for CS Linux hosts will be updated to Matlab-9.6 (R2019a) on 11 June 2019.

10 June 2019 — Scheduled Downtime

riker.cs (under-graduate file server) will be down starting @8a to have 40Gbps ethernet card installed. During this time no under-graduate students will be able to access their home directories. The outage should last about thirty minutes. All login sessions on data.cs (under-graduate compute server) will be terminated beforehand.

23-24 May 2019 — Scheduled Downtime

ITaP Networking will be upgrading our network link between LWSN and the rest of campus on the evening of May 23 from 11PM until May 24 2AM. They will also be reconfiguring routing between CS and campus networks. There will be extended network disruption for all CS networks during this time.

This work was not able to be completed as schedule. It has been postponed until a later date.

16 May 2019 — Scheduled Downtime

madoc.cs (faculty/staff file server) will be down starting @6a to have it's /home and /scratch2 filesystems enlarged. It should be operational by 7a.

15-16 May 2019 — Scheduled Downtime

Contractors on behalf of ITaP Networking will be upgrading network infrastructure in LWSN on the evening of May 15 from 11PM until May 16 6AM. There will be general network disruption.

13 May 2019 — Scheduled Downtime

cuda.cs (departmental GPU server) will have it's OS updated from Ubuntu 16.04 to 18.04. It will be down starting @8a, and should be back up and available by noon.

9 May 2019 — Scheduled Downtime

The XINU lab hosts (xinu00-xinu24) will be down for system replacments starting @8a. They will return to service by 4p.

9 May 2019 — Scheduled Downtime

NOTICE - This has been delayed until further ntotice.

The mc cluster (mc01-mc16) will be down for system maintenance starting @8a. They will return to service by noon.

7 May 2019 — Software Update

Default Matlab installation for all CS Linux hosts updated from 9.1 (R2016b) to 9.4 (R2018a). Removed 7.12 (R2011a) installation.

28 April 2019 — Scheduled Downtime

riker.cs (undergraduate home directory server) will be rebooted @1a due to network interface issues. It should take no longer than 15 minutes.

26 April 2019 — Scheduled Downtime

All pod lab hosts (podN-N.cs) will be rebooted @midnight for system maintenance. It should take no longer than 15 minutes.

1-2 April 2019 — Scheduled Downtime

Contractors on behalf of ITaP Networking will be upgrading network infrastructure in HAAS on the evening of April 1 from 11PM until April 2 6AM. There will be general network disruption.

After the update it will be necessary to make manual adjustments to network switches in a couple of the rooms -- HAAS G049 and HAAS 145. ITaP Networking will be over first thing tomorrow morning to make the adjustments. Until they do, the machines connected to the in-room network switch will be off the network. This includes laptops using the wired connections.

Update@7:30AM: work is taking longer than expected. Estimated time of completion is 9AM

Update@11:30AM: most rooms are now connected. The workstations in HAAS 257 are on-line, but the backend devices and server are not. HAAS G049 is still down.

Update@12:30PM: The backend devices and server in HAAS 257 (XINU lab) back on-line.

7 January 2019 — Scheduled Downtime

cuda.cs will be shutdown @1p to perform maintenance on attached UPS.

2 January 2019 — Unscheduled Downtime

mc18.cs was rebooted due to hung NFS mounts @12:50 PM. It was returned to service @1:00 PM

21 December 2018 — Scheduled Downtime

Solaris 10 systems will be updated to the latest available patch level. They will be rebooted between 2:00 PM and 5:00 PM on Friday, December 21. Individual machines should only take about 5 minutes to reboot some time during the the time window, but because of server dependencies the effective downtime may be longer.

19 December 2018 — Scheduled Downtime

CS undergraduate home directories will be migrated to a new server beginning at 9AM, Wednesday, December 19th. All login sessions on data.cs.purdue.edu and the Linux instructional labs computers in LWSN (B146, B148, B158) and HAAS (G040, G056, 257) will be terminated at that time and logins will be disabled until the work is completed. The migration is expected to take approximately four hours. Please contact Science IT at ScienceHelp@purdue.edu if you have questions concerning this migration.

26 October 2018 — Scheduled Downtime

The CS ML research hosts will be down Friday October 26th at 13:00 until 16:00 to replace a bad memory module and upgrade the OS and video driver.

The server has been experiencing random reboots. This work is expected to address the issue and add support for CUDA 9.1 and 10.

12 October 2018 — Unscheduled Downtime

Some time before 9PM data.cs.purdue.edu became unresponsive. Science IT staff is working to bring it back on-line.

Data was operational by 10PM.

8 October 2018 — Unscheduled Downtime

At about 23:53 data.cs.purdue.edu became unresponsive and was rebooted. It was back up by about 00:07.

8 October 2018 — Scheduled Downtime

The CS Windows fileserver vermouth.cs.purdue.edu will be down on Monday, October 8 while a Dell technician replaces faulty hardware. It should be brief (less than 30 minutes), and will happen when the technician arrives mid to late morning.

The server has been experiencing random reboots. This work is expected to address the issue.

8 October 2018 — Scheduled Downtime

CoS IT staff plan to update the OS on the CS file-server madoc.cs. madoc.cs provides UNIX home directories for most CS faculty and staff. During this time, logins and remote home directory access (via NFS and SMB) will be unavailable. The plan is to start this @9a Monday, Oct 8. The upgrade should last approximately two hours.

1 October 2018 — Scheduled Downtime

The CS Windows fileserver vermouth.cs.purdue.edu will be down from 8:00PM until 10:00PM to install firmware updates on Monday, October 1

The server has been experiencing random reboots. This work is a first step in addressing the issue. There will be multiple server reboots during this time.

17 September 2018 — Unscheduled Downtime

From about 8:14AM until about 8:24AM, LWSN was disconnected from campus networks, including all CS networks and all ITaP networks (wired and wireless). Update: It happened again from about 8:44AM until about 8:54AM. This problem appears to be related to ITaP networking hardware power supply problems. It has been reported.

27 August 2018 — Scheduled Downtime

XINU lab hosts will be down from 8a to approximately 11a. During this time all machines will be shutdown to have RAM installed.

21 August 2018 — Unscheduled Downtime

At about 16:04 Vermouth (Windows fileserver for student accounts) went down for an unknown reason. It was powered on and came back up at about 16:36.

15 August 2018 — Unscheduled Downtime

The CS GPU cluster machine (cuda.cs) had to be rebooted at 10:47AM after hung NFS mounts related to file-server updates on 13 August 2018. cuda.cs was back up and operational by 10:49AM.

13 August 2018 — Scheduled Downtime

College of Science IT will be updating CS compute server machines (antor, data, mcXX) to Ubuntu 18.04. During this time HAAS (G040, G056 and 257) and LWSN (B146, B148 and B158) will be temporarily unavailable and reboot sporadically.

4-8 May 2018 — Scheduled Downtime

College of Science IT is updating CS instructional lab Linux machines to Ubuntu 18.04. During this time computer labs in HAAS (G040, G056 and 257) and LWSN (B146, B148 and B158) may be temporarily unavailable and reboot sporadically.

10 May 2018 — Scheduled Downtime

The CS department web server (www.cs.purdue.edu) and FTP server (ftp.cs.purdue.edu) will be moved to a new server. There should be minimal downtime, but there may be some inconsistency while host aliases are updated to the new server.

14-15 March 2018 — Unscheduled Downtime

The incoming CS mail server was not accepting mail from Wednesday evening at 20:17 until 08:06 on Thursday morning. All legitimate mail should have been queued on the sending systems and delivered on retry. Depending on the remote site's configuration, retries may be a few hours.

9 January 2018 — Software Update

As a result of recent changes with the printing infrastructure (upgrade to the CUPS server), the old Solaris lpr commands are not working as expected. They have been replaced with the standard CUPS lpr replacement commands.

The most significant change is the disappearance of the printer-simplex and printer-duplex names. Instead it is necessary to use the -o sides=one-sided or -o sides=two-sided-long-edge options to lpr.

You can create shell aliases for the various commands, or you can use lpoptions to create custom instances of printers. If you normally use a printer (lwsnb146bw) that defaults to duplex, but you occassionally want to print simplex, you can create a simplex instance with:

$ lpoptions -p lwsnb146bw/simplex -o sides=one-sided

Then use -Plwsnb146bw/simplex when printing.

3-4 January 2018 — Scheduled Downtime

Solaris 10 systems will be updated to the current patch level. They will be rebooted between 5:00 PM Wednesday, January 3 and 8:00 AM on Thursday, January 4. Individual machines should only take about 5 minutes to reboot some time during the the time window, but because of server dependencies the effective downtime may be longer.

3 January 2018 — Scheduled Downtime

College of Science IT will be updating the kernel/modules on CS instructional lab Linux machies. The labs included are: HAAS G040 (borg), HAAS G056 (escher), HAAS 257 (xinu), LWSN B146 (moore), LWSN B148 (pod), LWSN B158 (sslab). beginning @9a. The outage will last approximately 15 minutes (per lab) and the machines will be rebooted. This update is to fix a problem with autofs. *NOTE: This has been rescheduled from 27-December-2017.*

26 December 2017 — Scheduled Downtime

College of Science IT will be updating the kernel/modules on grad file-server (antor.cs) and faculty/staff file-server (madoc.cs) beginning @9a. The outage will last approximately 15 minutes and the machines will be rebooted. This update is to fix a problem with autofs. During this time user filesystems will be unavailable.

22 December 2017 — Scheduled Downtime

College of Science IT will be updating the kernel/modules on undergrad file-server (data.cs), beginning @8a. This update is to fix a problem with autofs.

25 November 2017 — Scheduled Downtime

College of Science IT will be updating CS faculty/staff UNIX file-server (madoc.cs) to Ubuntu Linux, beginning @8a. This will make it consistent with other UNIX file-servers.

10 November 2017 — Scheduled Downtime

College of Science IT is updating CS compute node mc18 to Ubuntu Linux, beginning @8a. This will make it consistent with the instructional lab machines.

14 October 2017 — Scheduled Downtime

Due to disk failure, cuda.cs will be down for approximately four (4) hours beginning Saturday, 14-October-2017 08:00 EDT.

9 October 2017 — Scheduled Downtime

College of Science IT is updating CS GPU servers cuda.cs and mctesla.cs to Ubuntu Linux. This will make them consistent with the instructional lab machines.

1 September 2017 — Scheduled Downtime

College of Science IT is updating CS compute node mc17 to Ubuntu Linux. This will make it consistent with the instructional lab machines.

31 August 2017 — Scheduled Downtime

College of Science IT is updating CS compute cluster (mc01-mc16) machines to Ubuntu Linux. This will make them consistent with the instructional lab machines.

12-20 August 2017 — Scheduled Downtime

College of Science IT is updating CS instructional lab Linux machines to Ubuntu.

12 August 2017 — Scheduled Downtime

College of Science IT is updating undergrad file-server (data.cs) to Ubuntu Linux.

10-11 August 2017 — Scheduled Downtime

Solaris 10 systems will be updated to the current patch level. They will be rebooted between 5:00 PM Thursday, August 10 and 8:00 AM on Friday, August 11. Individual machines should only take about 5 minutes to reboot some time during the the time window, but because of server dependencies the effective downtime may be longer.

5 August 2017 — Scheduled Downtime

College of Science IT is updating data to Ubuntu Linux.

21 July 2017 — Scheduled Downtime

Network connectivity outside LWSN was disrupted at about 13:50 and restored about 14:30.

20-21 June 2017 — Scheduled Downtime

Solaris 10 systems will be updated to the current patch level. They will be rebooted between 5:00 PM Tuesday, June 20 and 8:00 AM on Wednesday, June 21. Individual machines should only take about 5 minutes to reboot some time during the the time window, but because of server dependencies the effective downtime may be longer.

7 June 2017 — Unscheduled Downtime

Bors, the DHCP and software package (e.g. matlab) server is down as of about 10PM. It is expected to be back up by midnight.

7 June 2017 — Unscheduled Downtime

Ector, the authentication server for the grad account domain is down. A disk failed during scheduled system updates. It should be back up by about 9PM.

7-8 June 2017 — Scheduled Downtime

Solaris 10 systems will be updated to the current patch level. They will be rebooted between 5:00 PM Wednesday, June 7 and 8:00 AM on Thursday, June 8. Individual machines should only take about 5 minutes to reboot some time during the the time window, but because of server dependencies the effective downtime may be longer.

15 May 2017 — Software Update

The default version of Matlab for 64-bit Intel (amd64/x86_64/x64) Linux and OS X systems is now 9.1 (R2016b) as installed in /p/matlab-9.1 .
The default version for other systems was not changed.

26 April 2017 — Scheduled Downtime

As of about 07:55, bors.cs.purdue.edu, the DHCP server and package fileserver is down.

The server was rebooted and is operational as of about 08:25.

4 April 2017 — Scheduled Downtime

The wired CS networks in LWSN were down from about 3:30PM until about 6:40PM Tuesday, April 4.

The network was down again from about 10:20PM until about 10:45PM.

The source of the disruption was isolated to the XINU lab (HAAS 257). Once it was located (student networking project) and terminated, the lab was brought back on-line about midnight.

3-4 January 2017 — Scheduled Downtime

Solaris 10 systems will be updated to the current patch level. They will be rebooted between 5:00 PM Tuesday, January 3 and 8:00 AM on Wednesday, January 4. Individual machines should only take about 5 minutes to reboot some time during the the time window, but because of server dependencies the effective downtime may be longer.

7 November 2016 — Scheduled Downtime

my.cs.purdue.edu is not allowing logins at this time as of 06:30. This was resolved at about 10:04.

17-18 August 2016 — Scheduled Downtime

Solaris 10 systems will be updated to the current patch level. They will be rebooted between 5:00 PM Wednesday, August 17 and 8:00 AM on Thursday, August 18. Individual machines should only take about 5 minutes to reboot some time during the the time window, but because of server dependencies the effective downtime may be longer.

8 August 2016 — Scheduled Downtime

The wired CS networks in LWSN were down from about 11:30PM on Sunday, August 7 until about 8:00AM Monday, August 8. Most network connections except those in the basement of LWSN have been restored. ITaP networking is still working on that area. Instructional labs in the basement are still off-line. Update: as of about 8:40AM, the basement is back on-line as well.

5 August 2016 — Scheduled Downtime

Purdue Operations and Maintenance will be turning off power to the ground floor of HAAS Hall on Friday morning, August 5 from 6:00 AM to 7:00AM. During this time, computers in the basement will be without power and unavailable. This includes the two instructional labs HAAS G40 and HAAS G56.

9 June 2016 — Unscheduled Downtime

Arthur will be rebooted at 10:30PM to reconfigure network interfaces. The IP address associated with "arthur.cs.purdue.edu" was changed a few days ago, with the old IP addresses still listening for various network services. This is the next step in completing the transition to the new IP address. Arthur should not be down for more than 15 minutes.

23-24 May 2016 — Scheduled Downtime

Solaris 10 systems will be updated to the current patch level. They will be rebooted between 5:00 PM Monday, May 23 and 8:00 AM on Tuesday, May 24. Individual machines should only take about 5 minutes to reboot some time during the the time window, but because of server dependencies the effective downtime may be longer.

25 April 2016 — Unscheduled Downtime

We are continuing to experience extended network outages (5-15 minutes) at various times. ITaP Networking is still working on the issue.

19 April 2016 — Scheduled Downtime

From 10:00 PM to about 10:15 PM on Tuesday, 4/19/16, ITaP data network engineers will be performing work that may cause a disruption of CS data network services.

18 March 2016 — Scheduled Downtime

From 1:00 AM to 4:00 AM on Friday, 3/18/16, ITaP data network engineers will be performing work that may cause a disruption of data network services for some clients.

All clients who try to access off-campus resources from on campus and vice versa should plan to experience disruption of that service. Local campus network traffic consisting of on-campus to on-campus communication will also be impacted for cases where clients are trying to access services sourced from the data centers.

It is possible that no service disruptions will result from this scheduled work however it is also possible that several times during the scheduled outage window, Affected Client(s) may experience one or more 5-minute to 10-minute disruptions, depending on how the work goes.

16-17 March 2016 — Scheduled Downtime

Solaris 10 systems will be updated to the current patch level. They will be rebooted between 5:00 PM Wednesday, March 16 and 8:00 AM on Thursday, March 17. Individual machines should only take about 5 minutes to reboot some time during the the time window, but because of server dependencies the effective downtime may be longer.

9 February 2016 — Scheduled Downtime

The server bender.cs.purdue.edu will be rebooted at 9:00 PM today to resolve issues. It should be available by 9:15 PM

8 February 2016 — Unscheduled Downtime

The server antor is not communicating on the network as of about 09:00.

It is back on-line as of about 09:15.

4 February 2016 — Unscheduled Downtime

Due to power problems in MATH (side effect of scheduled power maintenance), the RCAC clusters Carter, Conte, Hammer, Hansen, Radon and Scholar along with the Data Depot are largely nonfunctional. Power has been restored, but services are still not working as expected. There is currently no estimate on when services will be restored.

Data Depot is now functioning as expected as of about 10:30. The issues with the clusters was generally caused by lack of access to Data Depot and is returning to normal.

1-5 February 2016 — Scheduled Downtime

The Rice and Snyder RCAC clusters will be down from 8AM, Monday, February 1 until about 5PM on Friday, February 5 for maintenance and relocation from FREH to the new portable datacenter.

See https://www.rcac.purdue.edu/news/810 for more details.

11 January 2016 — Unscheduled Downtime

myCS (https://my.cs.purdue.edu/) is unavailable as of 8:00AM.

This was resolved by 9:15AM.

10 January 2016 — Scheduled Downtime

The faculty home directory server (madoc.cs.purdue.edu) will be rebooted at 2 AM on Sunday, 10 January to effect kernel updates. All user jobs will be terminated at that time. File service will be interrupted for approxiamtely five minutes as the system reboots.

8 January 2016 — Scheduled Downtime

Destiny.cs.purdue.edu will be down to migrate to a new hypervisor environment. It is estimated that the downtime will be for 2-3 hours. The process will start at 9 AM.

7 January 2016 — Scheduled Downtime

Darkstar.cs.purdue.edu will be down to migrate to a new hypervisor environment. It is estimated that the downtime will be for 2-3 hours. The process will start at 7 PM.

4-5 January 2016 — Scheduled Downtime

Solaris 10 systems will be updated to the current patch level. They will be rebooted between 5:00 PM Monday, January 4 and 8:00 AM on Tuesday, January 5. Individual machines should only take about 5 minutes to reboot some time during the the time window, but because of server dependencies the effective downtime may be longer.

9 December 2015 — Unscheduled Downtime

www-cgi.cs.purdue.edu is unavailable at this time because of network connection issues. This also means /p/www-cgi is unavailable.

It is back up as of 11:30.

10 November 2015 — Unscheduled Downtime

my.cs.purdue.edu is unresponsive as of about 8:15

It is back up as of 9:00.

5 November 2015 — Software Update

SSH v1 protocol has been disabled on CS Linux, OS X, and Solaris systems. This should have no impact on users as all clients should be using SSH v2, and a check of logs confirms this.

5 November 2015 — Unscheduled Downtime

my.cs.purdue.edu is unresponsive as of about 9:10

It is back up as of 9:37.

21 September 2015 — Scheduled Downtime

ITaP will be doing network maintenance on Monday evening, September 21, between 6:00pm and 10:00pm. It will likely disrupt network connectivity briefly. It will affect both wired and wireless. Users may experience one disruption of about 30 seconds.

8 September 2015 — Unscheduled Downtime

The XINU Lab (HAAS 257) is off the network as of about 4:25pm.

Network connectivity was restored about 5:40pm.

29 August 2015 — Software Update

USENET news software (/p/news) has been removed from CS systems. It was very old and only available on Solaris systems.

References to checknews, readnews, and msgs were removed from user startup files (.login, .profile) for anyone who had used them since January 1, 2014.

19 August 2015 — Unscheduled Downtime

Around 04:20 the package server bors.cs.purdue.edu became unresponsive. It was rebooted and back up by about 05:20.

18 August 2015 — Unscheduled Downtime

Between about 07:30 and 12:00, some messages sent to @cs.purdue.edu addresses from Purdue mail servers were rejected as undeliverable. This was the result of a CS DNS configuration change and has been undone.

17 August 2015 — Scheduled Downtime

mc01-mc17 will be have their Linux installs updated and undergo power cable replacement on Monday. All user jobs will be terminated and the machines rebooted.

Update: mc01-17 are back in service

16 August 2015 — Scheduled Downtime

The undergraduate (data) and graduate (antor) file servers will undergo OS updates beginning at 6AM on Sunday morning. File service will continue during the update.

At 8AM the systems will be rebooted. All user jobs on those systems will be terminated at that time and file service will be interrupted during the reboot. Client machines should recover automatically when the servers come back up.

Update: antor and data are back in service.

15-16 August 2015 — Scheduled Downtime

In preparation for fall classes, the undergraduate Linux systems will undergo OS updates this weekend. All user jobs will be terminated and the machines rebooted at some point during the weekend.

Affected systems are the moore (LWSN B146), pod (LWSN B148), sslab (LWSN B158), borg (HAAS G040), and xinu (HAAS 257) Linux lab machines, the Linux TA machines, mc18, and mctesla.

Update: all Linux lab and TA machines and mc18 have been updated.

15 August 2015 — Scheduled Downtime

The CS Windows Lab/Student home directory server vermouth.cs.purdue.edu will be down for hardware upgrade beginning at 8:00am. The downtime will be 4-5 hours to synchronize the data copy and swap in the new hardware. Vermouth is expected to be back up by 1:00pm.

It is recommended that you log out of your Windows machine before Saturday morning, and log in again after 1:00pm on Saturday. Any open files may need to be saved locally before being saved to the new server when it comes up.

10 August 2015 — Scheduled Downtime

The CS Windows Lab/Student home directory server vermouth.cs.purdue.edu will be down for filesystem maintenance beginning at 5:00pm. The downtime is expected to be about 1 hour. This is necessary to repair corrupted files.

Update: The filesystem repair attempt resulted in an unresponsive server. If further attempts to revive it are unsuccessful, the new server scheduled to be installed Saturday, will be installed in the morning. It will have a copy of all user data from about 9:30am today.

Update: The filesystem repair completed and the server was back on-line by about 2:00am. The plan is to do the system upgrade on Saturday as scheduled.

9 August 2015 — Scheduled Downtime

The filesystems /u/u1, /u/u2, /u/u9, and /u/u22 will be moved from arthur to madoc beginning at 7:00am on Sunday, 9 August. Users with home directories on those filesystems will be forcibly logged out of department Linux/Solaris/OS X systems at that time, so logging out at close of business Friday is recommended.

Downtime is expected to be less than 30 minutes.

7 August 2015 - 12 August 2015 — Scheduled Downtime

The XINU lab backend infrastructure is being updated. During this time many of the backends will be unavailable.

5 August 2015 - 23 August 2015 — Scheduled Downtime

The CS Windows lab in LWSN B160 will be shut down for major remodeling and updating. Anyone needing to use a CS Windows lab during this time should visit HAAS G56. The remodel may be complete before August 23, in which case the lab will be opened early.

30 July 2015 — Scheduled Downtime

Beginning at 12:00am (midnight) until 6:00am on July 30, ITaP will be performing network changes that will cause network disruption for both wired and wireless networks in LWSN and HAAS. The disruptions may last up to an hour.

Update: As of 7:15am, CS networks in HAAS are still off-line. This has been reported to ITaP.

Update: Network connectivity for CS networks in HAAS was restored about 8:30.

2 July 2015 — Scheduled Downtime

Beginning at 12:00am (midnight) until 6:00am on July 2, ITaP will be performing network changes that will cause network disruption for both wired and wireless networks in LWSN and HAAS. The disruptions may last up to an hour.

Update: THIS WORK HAS BEEN POSTPONED UNTIL FURTHER NOTICE

Update: This work was completed July 30. See above

30 June 2015 — Software Update

The default version of TeX typesetting software has been updated to the TeX Live 2015 distribution (from TeX Live 2012). To use the TeX Live software suite on CS UNIX, Linux, and OS X machines, you should have /p/tex/bin in your PATH setting.

11-12 June 2015 — Scheduled Downtime

Solaris 10 systems will be updated to the current patch level. They will be rebooted between 5:00 PM Thursday, June 11 and 8:00 AM on Friday, June 12. Individual machines should only take about 5 minutes to reboot some time during the the time window, but because of server dependencies the effective downtime may be longer.

1 June 2015 — Unscheduled Downtime

The disk for /u/u1, /u/u9, and /p/p2 is experiencing problems and is off-line as of about 10:38.

Update: /u/u9 is back in service as of about 13:55. The disk was replaced and user data was restored from backups. The last backup snapshot was at 23:35 yesterday, May31. Any changes to user files made between then and 11:00 this morning are lost.

Update: /u/u1 is back in service as of about 14:12. The disk was replaced and user data was restored from backups. The last backup snapshot was at 23:32 yesterday, May31. Any changes to user files made between then and 11:00 this morning are lost.

Update /p/p2 is back in service.

22 April 2015 — Scheduled Downtime

The servers data.cs.purdue.edu and antor.cs.purdue.edu will be rebooted on Thursday morning, 23 April at 5:00 AM. All login sessions and background user jobs will be terminated at that time.
data is the fileserver for /u/u3 and /u/u87 through /u/u99. antor is the fileserver for /u/u4, /u/u6, /u/u7, /u/u12, /u/u13, /u/u24, /u/u28, and /u/u50. All the above filesystems will be briefly unavailable during the reboot.

16 April 2015 — Software Update

The default version of Java (/p/java) was updated from Java 1.7.0_75 to Java 1.7.0_79. There should be no user visisble changes. The previous version will still be available for a limited time as /p/java-1.7.0_75

JDK 8 is available in /p/java-1.8 (1.8.0_45)

15 March 2015 — Scheduled Downtime

The server balan.cs.purdue.edu will be down for about 20 minutes for a system battery replacement on Wednesday morning, March 18, starting at 7:30 AM. This server is the fileserver for /u/u5 and the authentication server the cypress NIS domain. During the downtime users will not be able to log in to machines in the cypress domain, or the S3 group machines.

15 March 2015 — Software Update

The samba servers on the Solaris machines were updated to samba 3.6.25. There should be no user-visible changes.

11 February 2015 — Software Update

The default version of Matlab for 64-bit Intel (amd64/x86_64/x64) Linux systems is now 8.4 (R2014b) as installed in /p/matlab-8.4 . The default version for other systems was not changed.

7 February 2015 — Scheduled Downtime

The server vermouth.cs.purdue.edu will be down for maintenance from 9PM until about 10PM. During this time, local home directories for students in the SERVERS (CS) domain will be unavailable. This will impact the Windows instructional labs (LWSN B160, HAAS G56) as well as student desktop machines.

21 January 2015 — Unscheduled Downtime

The server vermouth.cs.purdue.edu, had a failed disk in the RAID array. The drive was replaced, and the system is automatically rebuilding the RAID system. However, it is doing so in an aggressive mode that impacts normal use of the system. It is still up and files are technically available, but it is slow in responding. We anticipate the build the be finished over the weekend.

15 January 2015 — Unscheduled Downtime

The server vermouth.cs.purdue.edu, the primary server for Windows home directories, is down as of about 3:07 AM.

The server is back up as of about 8:20 AM.

4 January 2015 — Scheduled Downtime

The servers antor.cs.purdue.edu and data.cs.purdue.edu will be rebooted between 9:00 and 10:00 AM on Sunday, January 4. NFS file service will be briefly interrupted at that time.

2-3 January 2015 — Scheduled Downtime

Solaris 10 systems will be updated to the current patch level. They will be rebooted between 5:00 PM Friday, January 2 and 8:00 AM on Saturday, January 3. Individual machines should only take about 5 minutes to reboot some time during the the time window, but because of server dependencies the effective downtime may be longer.

25 November 2014 — Unscheduled Downtime

The server (pc.cs.purdue.edu) that hosts several web sites: opentec.cs.purdue.edu videowall.cs.purdue.edu webcat.cs.purdue.edu had a disk failure on Tuesday. It was restored from backups, so any changes made during the day on Tuesday were lost.

15 November 2014 — Software Update

Turnin was updated to detect attempts to submit empty files, or no files at all. The verbose (-v) is also turned on by default. These changes are made in an attempt to alert students to improper project submission.

NOTE: a problem was reported Sunday evening that prevented project submissions in some cases. It was corrected Sunday evening, November 16.

16 October 2014 — Scheduled Downtime

The following Dell 2335dn multi-function printers will be replaced with new Lexmark XM3150 multi-function printers. The printers are similar in functionality.

Location	Old Printer	New Printer
HAAS 140	stern	haas140mfp
LWSN 1137	gottfried	lwsn1137mfp
LWSN 2116	igor	lwsn2116mfp

If there are issues, please report them to sciencehelp@purdue.edu

This was postponed from an earlier schedule (October 3, then October 6)

2 October 2014 — Unscheduled Downtime

The printer bradley in LWSN 3154 failed and was replaced with a new Lexmark XM3150 multi-function printer named lwsn3154mfp.

2 October 2014 — Unscheduled Downtime

The printer bhong in LWSN B131 failed and was replaced with a new HP Color LaserJet Enterprise M651dn printer named lwsnb131co.

29 July 2014 — Unscheduled Downtime

mc18 was unavailable because of system resource exhaustion starting about 15:30.

It was rebooted and is up as of 17:00

25 July 2014 — Scheduled Downtime

At 10AM, most of the printers in the department will be moved from one network to another (names will remain the same). There may be a brief time (5-10 minutes) when the printers are not accessible, but no user changes should be necessary.

If you continue to experience problems after 10:30, please report them to sciencehelp@purdue.edu.

17 July 2014 — Scheduled Downtime

The servers mc01.cs.purdue.edu through mc16.cs.purdue.edu will be down from 1PM until about 3PM. They need to be moved from one physical location to another.

Note, this should not impact mc18.cs.purdue.edu.

2 July 2014 — Unscheduled Downtime

Dodona, the server for portals.cs.purdue.edu, is down as of about 1:30PM.

Dodona was rebooted by about 1:50PM.

11 June 2014 — Unscheduled Downtime

There was a momentary power disruption on campus at about 9:55AM. It only affected some circuits, and most computers were not affected. However there was disruption for a lot of the networking hardware and some of the machines that lost power took a while to reboot.

If you are still seeing problems, please report them to sciencehelp@purdue.edu

10 June 2014 — Scheduled Downtime

We will be changing network routing within CS on Tuesday morning between 7:30AM and 8:30AM. This is expected to have very little impact on users in general -- probably a minute or two of lost network connectivity. Please be patient and everything should return to normal in a few minutes. It is not expected to take the full hour.

3 May 2014 — Scheduled Downtime

Physical Facilities is planning to do electrical work for HAAS on Saturday morning, May 3. This will require that power be turned off for the entire building during this time. The scheduled outage time is from 5:30AM until about 6:30AM.

All computers and all networking hardware will be powered off.

Staff managed computer systems in HAAS will be scheduled to be shut down starting at 5AM, and should be back on-line by about 7AM.

If you are responsible for a self-managed machine, we strongly suggest you shut it down and turn it off before 5AM. You may not be allowed in the building during the scheduled power outage time (5:30AM-6:30AM).

1 May 2014 — Scheduled Downtime

A patch for Microsoft Internet Explorer (IE) will be pushed out tonight. It will cause a system reboot to complete the update.

19 April 2014 — Scheduled Downtime

Physical Facilities is planning to do electrical work for LWSN on Saturday morning, April 19. This will require that power be turned off to most offices in the building during this time. The scheduled outage time is from 7:30AM until about noon.

All office/lab computers will be powered off. The data centers will not be powered off.

Staff managed computer systems in offices and labs will be scheduled to be shut down starting at 7AM.

If you are responsible for a self-managed machine, we strongly suggest you shut it down and turn it off before 7AM.

16 April 2014 — Unscheduled Downtime

The rebooter device for the XINU lab x86 backends (xinu101 through xinu147) is not working. There is no estimated time of repair.

The rebooter is working again (as of about 11:30).

13 April 2014 — Unscheduled Downtime

The automounter process on lore died, causing problems with file access on lore. Lore was rebooted about 8:03AM

7 April 2014 — Unscheduled Downtime

Due to cooling system problems, it is necessary to shut down the servers mc01.cs.purdue.edu - mc16.cs.purdue.edu. They will be returned to service as soon as the cooling system repairs are completed.

The cooling system was repaired and the servers have been powered on at about 16:45. All but mc16 powered on correctly.

Mc16 is back in service at about 17:05.

21 March 2014 — Scheduled Downtime

The main web server (www.cs.purdue.edu) will be down for about 20 minutes between 07:30 and 08:00 for some maintenance. This is a followup to work on March 20.

20 March 2014 — Scheduled Downtime

One of the department domain controllers will be down for maintenance starting at 10:00. There is no expected disruption of service because the other server will handle service requests.

20 March 2014 — Scheduled Downtime

The main web server (www.cs.purdue.edu) will be down for about 20 minutes between 07:30 and 08:00 for some maintenance.

17 March 2014 - 21 March 2014 — Scheduled Downtime

During spring break, March 17 -- March 21, College of Science IT will be replacing the existing Dell 2330dn printers with new Lexmark M5155 printers. The printers are similar in functionality.

The new hardware will come with new names consistent with the College of Science printer naming scheme. We expect this will make it easier for users to locate the correct printer.

Lab	Old Printer	New Printer
HAASG40	cacm	haasg40bw
HAASG56	hugh	haasg56bw
HAAS257	clemens	haas257bw
LWSNB146	gutenberg	lwsnb146bw
LWSNB148	pollox	lwsnb148bw
LWSNB158	noodle	lwsnb158bw
LWSNB160	castor	lwsnb160bw

If there are issues, please report them to sciencehelp@purdue.edu

16 March 2014 — Unscheduled Downtime

The main web server (www.cs.purdue.edu) was unresponsive from about 11:35PM until about 00:40AM, when it was rebooted.

8 March 2014 — Scheduled Downtime

Physical Facilities is planning to do electrical work for HAAS on Saturday morning, March 8. This will require that power be turned off for the entire building during this time. The scheduled outage time is from 7AM until about 9AM.

All computers and all networking hardware will be powered off.

Staff managed computer systems in HAAS will be scheduled to be shut down starting at 6AM, and should be back on-line by about 10AM.

If you are responsible for a self-managed machine, we strongly suggest you shut it down and turn it off before 7AM. You may not be allowed in the building during the scheduled power outage time (7AM-9AM).

5 January 2014 — Scheduled Downtime

The undergrad (data) and grad (antor) file servers will undergo OS updates beginning at 6AM on 5 January. Local user jobs will be terminated at that time, though file service will continue during the update. Both servers will be rebooted at approximately 8AM after which normal service will resume.

4-5 January 2014 — Scheduled Downtime

The MC++ cluster (mc01-mc16, mc18, mctesla) and the Linux instructional labs machines (sslab00-24, pod0-0 - pod5-5, moore00-moore24, sac01-13, xinu00-xinu21, borg00-borg24) will undergo system updates on 4 and 5 January. As each system is updated, it will be unavailable for use for approximately two hours. User jobs will be terminated when each system is rebooted.
Update: All OS updates are completed.

21 December 2013 — Scheduled Downtime

Physical Facilities is planning to do electrical work for LWSN on Saturday morning, December 21. This will require that power be turned off for the entire building during this time. The scheduled outage time is from 9AM until about 1PM.

All computers and all networking hardware will be powered off.

Staff managed computer systems in LWSN will be scheduled to be shut down starting at 8AM, and should be back on-line by about 2PM.

If you are responsible for a self-managed machine, we strongly suggest you shut it down and turn it off before 8AM. You will not be allowed in the building during the scheduled power outage time (9AM-1PM).

17 September 2013 — Unscheduled Downtime

There continue to be network issues with sporadic network performance issues related. We are working on locating the source of the problem.
The faulty hardware was identified and the main switches rebooted between 18:20 and 18:30 to work around it. If you are still eperiencing network connectivity problems, please notify hardware

16 September 2013 — Unscheduled Downtime

At approximately 17:30 the main network router will be rebooted to recover from memory problems. This will result in a 5 minute disruption in network connectivity.

17 August 2013 — Scheduled Downtime

Linux systems in LWSN B131 (sac01-13), LWSN B146 (moore00-moore24), LWSN B148 (pod0-0 - pod5-5), LWSN B158 (sslab00-sslab24), HAAS G040 (borg00-borg24), HAAS 257 (xinu00-xinu21), the MC cluster (mc01-16, mc18, mctesla) and the fileservers data and antor will be rebooted to effect a kernel update beginning at 10PM. All user sessions on those systems will be terminated at that time.

Update: Reboots are done and the aforementioned machines are available.

13 August 2013 — Scheduled Downtime

Solaris 10 systems will be updated to the current patch level. They will be rebooted between 5:00 AM and 8:00 AM on Tuesday, August 13. Individual machines should only take about 5 minutes to reboot some time during the three hour window, but because of server dependencies the effective downtime may be longer.

Due to an error, the patches were pushed to the Solaris 10 x86 machines earlier than intended, and out of order at about 21:00 on Sunday evening, August 11. This caused problems that required the patching to be completed at that time. Only the Solaris SPARC machines will be updated on Tuesday morning.

11 August 2013 — Unscheduled Downtime

Due to operator error, patch updates got pushed to all Solaris x86 machines earlier than intended and out of order at about 21:00. This broke the auto-mounter causing problems with accessing directories. This also made the www.cs.purdue.edu and wiki.cs.purdue.edu servers non-functional. www.cs.purdue.edu was back on-line about 22:45 and wiki.cs.purdue.edu at about 00:30.

10 August 2013 — Scheduled Downtime

On Saturday, August 10, the College of Science VM infrastructure will be down from 7AM until about 8PM. This will include a few machines that directly impact CS users. Most notably the ticketing system we use will be down. Tickets (i.e. email to software@cs.purdue.edu, etc) will be blocked and processed when the systems come back up.
Some individual VMs will also be down. Owners will be notified directly.
The downtime is to facilitate a major upgrade to the MATH B60 data center by ITaP.

10 August 2013 — Scheduled Downtime

The Linux installs on data, antor, and mc18 will be updated beginning at 10PM on Saturday, 10 August. File service will continue during the updates but will be temporarily interrupted as the systems are rebooted.

User home directories on data (/u/u3 and /u/u87 though /u/u99) will be in a read-only state for a few hours after the reboot while the quota database is updated.

Update: Updates are done and the aforementioned machines are available.

10 August 2013 — Scheduled Downtime

Linux systems in LWSN B131 (sac01-13), LWSN B146 (moore00-moore24), LWSN B148 (pod0-0 - pod5-5), LWSN B158 (sslab00-sslab24), HAAS G040 (borg00-borg24) and HAAS 257 (xinu00-xinu21) and the MC cluster (mc01-16, mctesla) will be rebooted to effect a kernel update beginning at 10PM. All user sessions will be terminated at that time.

Update: Reboots are done and the aforementioned machines are available.

8 August 2013 — Unscheduled Downtime

There were general network issues starting about 09:20 and ending about 09:35.

7 August 2013 — Unscheduled Downtime

The server (Helga) for the XINU lab backend machines is down with hardware problems. It is expected to be back up by the end of the day.

18 July 2013 — Scheduled Downtime

The XINU lab Linksys backends will be out of service while the rebooter mechanism is being replaced.

1 July 2013 — Unscheduled Downtime

There was a problem with one of the network switches in the data center, causing network connectivity problems in general starting about 15:45. Network connectivity was restored about 16:15.

11 June 2013 — Scheduled Downtime

The MC cluster machines (mc01-16) will be unavailable today due to OS updates.

09 June 2013 — Scheduled Downtime

The LWSN B131 "Student Activity Center" and LWSN B146 lab will be unavailable today due to OS updates.

07 June 2013 — Scheduled Downtime

mc15.cs.purdue.edu is still running diagnostics and will be down again today. mc16.cs.purdue.edu has suffered a hardware failure and will be unavailable until further notice.
Update: mc15 is back in service.

07 June 2013 — Scheduled Downtime

The HAAS 257 and LWSN B146 labs will be unavailable today due to OS updates.

06 June 2013 — Scheduled Downtime

The HAAS G040 and LWSN B148 labs will be unavailable today due to OS updates.

06 June 2013 — Scheduled Downtime

mc15.cs.purdue.edu is running diagnostics and will be down until tomorrow.

05 June 2013 — Scheduled Downtime

mc17.cs.purdue.edu is being retasked and will be unavailable until further notice. mc01-16 or mc18 can be used instead.

30 May 2013 — Scheduled Downtime

Network switches on the third floor of LWSN will be upgraded on Thursday, May 30 between 5:30PM and 7:30PM. There will brief network outages for office connections during these times.

29 May 2013 — Scheduled Downtime

Network switches on the second floor of LWSN will be upgraded on Wednesday, May 29 between 5:30PM and 7:30PM. There will brief network outages for office connections during these times.

28 May 2013 — Scheduled Downtime

Network switches on the first floor of LWSN will be upgraded on Tuesday, May 28 between 5:30PM and 7:30PM. There will brief network outages for office connections during these times.

17 May 2013 — Scheduled Downtime

Claros, the primary Oracle server will be down from 8:00 until about 8:30 for hardware maintenance.

10 May 2013 — Scheduled Downtime

Claros, the primary Oracle server will be down from 8:15 until about 8:45 for hardware maintenance.
The replacement battery was not correct, this will have to be rescheduled

5 April 2013 — Scheduled Downtime

Balan will be down from 6am-7am for maintenance (physically moving the server). Balan is the NIS/authentication server for machines in the "cypress" domain (most S3 research machines). During this time other machines in the S3 domain will experience delays or failure authenticating logins.

At the same time Gwen will be removed from service. File services currently on Gwen (/u/u5) will be moved to Balan. /u/u5 will be unavailable during the maintenance window.

28 March 2013 — Unscheduled Downtime

As of 9:00 the authentication server for the Linux instructional labs (lore) is down.

As of about 10:10 the authentication service is back up for the instructional lab machines. Lore is still down.

Lore was restore and back up at 11:50.

14 March 2013 — Scheduled Downtime

Ector will be down from 6am-8am for maintenance (physically moving the server). Ector is the NIS/authentication server for machines in the "gradmath" domain (most TA and grad research machines). During this time other machines in the gradmath domain will experience delays or failure authenticating logins.

13 March 2013 — Scheduled Downtime

Windows servers are scheduled for Updates/Maintenance tomorrow evening (2013-Mar-13) beginning at 6:00PM EDT and ending at 9:00PM. Each server will be restarted after their updates.

Please logout to reduce the risk of profile corruption.

You will not be able to access your home directories and shared server folders during the Server Maintenance Time.

12 March 2013 — Scheduled Downtime

Windows desktop computers are scheduled for Updates/Maintenance this evening (2013-Mar-12) beginning at 6:00PM EDT and ending at 9:00PM. Computers may be rebooted as part of the update process.

Please do not VPN into your computer this evening during Maintenance hours.

11 March 2013 — Scheduled Downtime

Lore2 was removed from service (this was never intended to be a permanent machine).

11 March 2013 - 13 March 2013 — Scheduled Downtime

HAAS G040 will be unavailable while the machines in the lab are being replaced with updated hardware.

9 March 2013 — Scheduled Downtime

Physical Facilities will be turning off chilled water to LWSN from 6AM until about 2PM on Saturday, March 9. This will affect cooling in the building, especially in data closets. We had been told that they would make auxilliary cooling available, but today (March 8) they told us they would not be able to do that. If rooms get too hot, machines will be shut down as necessary.
During this time the basement of LWSN will also be closed to anyone other than the maintenance team working on the chilled water system.

10 February 2013 — Unscheduled Downtime

One of the network switches in the basement of LWSN dropped out of the stack at about 16:50, causing network connectivity problems for machines in LWSNB105 - LWSNB116F. The switch was rebooted Monday morning about 10:45, restoring connectivity.

31 December 2012 — Scheduled Downtime

Solaris 10 systems will be updated to the current patch level. They will be rebooted between 5:00 AM and 8:00 AM on Monday, December 31. Individual machines should only take about 5 minutes to reboot some time during the three hour window, but because of server dependencies the effective downtime may be longer.

26 December 2012 — Unscheduled Downtime

cities and its associated virtual machines (chicago, kunming, ningbo, and sanjose) were rebooted at 10:53AM due to a system freeze.

26 December 2012 - 28 December 2012 — Scheduled Downtime

The LWSN B131 (sac01-13), B146 (moore00-24), B148 (pod0-0 - 5-5), B158 (sslab00-24), and MC cluster (mc01-18, mctesla) computers will undergo OS updates from 24-28 December. Login access will be blocked on each system as it is being updated. Existing login sessions or background jobs may be terminated as necessary. Each system will be unavailable for approximately two hours as the update runs.

26 December 2012 — Software Update

The filesystems formerly on ector.cs.purdue.edu (/u/u4, /u/u6, /u/u7, /u/u12, /u/u13, /u/u24, /u/u28, and /u/u50) have been moved to a new, faster server named antor.cs.purdue.edu . The move should be transparent to departmental Unix/Linux/OS X users. If you're accessing your files from Windows via SMB/CIFS, you should use the new server name. (e.g. \\antor.cs.purdue.edu\myloginname)

24 December 2012 — Unscheduled Downtime

At about 9:55 AM one of the network switches serving the north end of LWSN failed, causing network connectivity problems. It was restarted about 11:00 AM, restoring service.

5 November 2012 — Unscheduled Downtime

At about 5:00PM Data stopped responding to NFS request. The server was rebooted and back up at about 5:40PM
At 5:47PM Lore was rebooted to recover from the NFS problems and was back up by about 5:50PM.

19 October 2012 — Unscheduled Downtime

As of about 10:45 AM the College of Science trouble ticketing system (which we use for trouble tickets) became unavailable because of an ITaP network outage in the MATH-B60 colocation center. The outage is expect to last until noon.
This was resolved about 11:45 AM.

6 October 2012 - 7 October 2012 — Scheduled Downtime

This upgrade has been postponed. No date has been set at this time
The College of Science will be upgrading their IT infrastructure this weekend, which will result in downtime for their request tracking system (RT). This system is used by multiple departments in Science including CS. This may delay some tickets.

6 October 2012 — Scheduled Downtime

We will be shutting down the Windows print server printers.cs.purdue.edu this weekend. If you have a printer configured in Windows or through SMB, you should should use cups.cs.purdue.edu instead.

4 October 2012 — Scheduled Downtime

HAAS G056 and LWSN B160 will be closed on Thursday from 1:30 pm - 3:30 pm while software is installed.

27 August 2012 — Unscheduled Downtime

Power went out to multiple buildings on campus including LWSN and HAAS at about 09:28. The power in LWSN returned after a few seconds, the power in HAAS returned at about 09:34.

27 August 2012 — Scheduled Downtime

HAAS G056 will be closed on Monday from 8-5 while the machines are re-imaged.

21 August 2012 — Unscheduled Downtime

As of about 4:30PM the College of Science ticketing system (RT) that we use is currently down. This affects trouble reports and requests.

20 August 2012 — Unscheduled Downtime

Purdue Airlink (PAL) wireless service is experiencing intermittent connectivity and instability issues. ITaP is reporting that the outage is expected to last until 5PM. See UO-2682 for updates.
ITaP reports that this was resolved as of 1:30PM

20 August 2012 — Unscheduled Downtime

Power went out to multiple buildings on campus including LWSN at about 14:53. There is no estimated time for power restoration.

20 August 2012 — Unscheduled Downtime

The mc* machines were shut down because of cooling issues (no power for the AC).
The machines were back up by 5PM.

17 August 2012 — Unscheduled Downtime

The College of Science ticketing system (RT) that we use is currently down. This affects trouble reports and requests.
The ticketing system is back up as of about 10:10AM.

13 August 2012 — Scheduled Downtime

Solaris 10 systems will be updated to the current patch level. They will be rebooted between 5:00 AM and 8:00 AM on Monday, August 13. Individual machines should only take about 5 minutes to reboot some time during the three hour window, but because of server dependencies the effective downtime may be longer.

12 August 2012 — Scheduled Downtime

On Sunday, August 12 from 9AM until about 11AM, the undergrad/instructional lab filesystems (u3,u87,u88,u89,u90,u91,u92,u93,u94,u95,u96,u97,u99) will be moved from the server lore.cs.purdue.edu to the server data.cs.purdue.edu. During this time all user processes on any CS UNIX/Linux systems using these filesystems will need to be terminated.

8 August 2012 — Scheduled Downtime

The MC cluster machines (mc01-mc17) will undergo OS updates today. A reboot will be necessary, so each machine will be unavailable for a few minutes at some point today.

7 August 2012 — Scheduled Downtime

The HAAS G056 lab (escher00-escher23) will be closed for the rest of the summer and will reopen for the fall semester as a Windows lab.

The HAAS G040 lab (SunRays) will be closed for the rest of the summer and will reopen for the fall semester as a Linux lab.

25 July 2012 — Software Update

The default version of Thunderbird (/p/thunderbird) on Solaris 10 systems will be updated from Thunderbird 13.0.1 to Thunderbird 14.0.

25 July 2012 — Software Update

The default version of Firefox (/p/firefox) on Solaris 10 systems will be updated from Firefox 13.0.1 to Firefox 14.0.1.

23 July 2012 — Unscheduled Downtime

The College of Science ticketing system (RT) that we use is currently down. This affects trouble reports and requests.
The ticketing system is back up as of about 11:20AM.

NOTICE: If you responded to a ticket between about 10:20PM Saturday, July 21 and 11:20AM Monday, July 23, please resend your message.

20 July 2012 — Unscheduled Downtime

There was network disruption between about 13:25 and 13:40.

12 July 2012 — Scheduled Downtime

Printing in LWSN and HAAS will be briefly interrupted at 5:30PM today while additional memory is installed in the print server (cups.cs.purdue.edu).

3 July 2012 — Scheduled Downtime

The ITaP Networks & Telecommunications Data Team will be doing work in LWSN that will disrupt network traffic into and out of the building from 4:00AM to 5:30AM. This will also disrupt network traffic between CS systems in HAAS and CS systems in LWSN.

29 June 2012 — Scheduled Downtime

The LWSN B148 systems (pod0-0 through pod5-5) will have their operating systems updated today. The update will require a reboot, so existing sessions may be terminated.

28 June 2012 — Scheduled Downtime

The LWSN B146 systems (moore00-moore24) will have their operating systems updated today. The update will require a reboot, so existing sessions may be terminated.

26 June 2012 — Unscheduled Downtime

The ITaP network connections to and within LWSN and HAAS are currently (11:20AM) cut off. Internet and campus network access are down, including PAL. The problem is with ITaP equipment and the problem has been reported to them. We do not have an ETA on a fix.

The network connections were restored around 11:30AM.

25 June 2012 — Scheduled Downtime

The LWSN B158 systems (sslab00-sslab24) will have their operating systems updated today. The update will require a reboot, so existing sessions may be terminated.

21 June 2012 — Software Update

The default version of Thunderbird (/p/thunderbird) on Solaris 10 systems will be updated from Thunderbird 12.0 to Thunderbird 13.0.1.

21 June 2012 — Software Update

The default version of Firefox (/p/firefox) on Solaris 10 systems will be updated from Firefox 12.0 to Firefox 13.0.1.

7 June 2012 — Unscheduled Downtime

PAL wireless is not working in multiple buildings across campus including CIVL, HIKS, LWSN, and RAWL. The outage is expected to last until about noon.

6 June 2012 - 8 June 2012 — Scheduled Downtime

The XINU lab (HAAS 257) frontend machines (xinu00-21) will be down until Friday, 8 June for hardware replacement.

26 May 2012 — Unscheduled Downtime

Starting about 1:40PM, the ITaP connection to CS networks in HAAS and LWSN and to PAL networks in LWSN was down. ITaP was notified.
The network connection was restored about 3:20PM.

21 May 2012 - 22 May 2012 — Scheduled Downtime

The machines in LWSN B146, LWSN B148, and LWSN B160 will be unavailable most of the day Monday and Tuesday. Dell will be replacing the video cards and power supplies in the machines.
The work was completed on Monday.

16 May 2012 — Software Update

The default version of Thunderbird (/p/thunderbird) on Solaris 10 systems will be updated from Thunderbird 11.0 to Thunderbird 12.0.

16 May 2012 — Software Update

The default version of Firefox (/p/firefox) on Solaris 10 systems will be updated from Firefox 11.0 to Firefox 12.0.

3 May 2012 — Software Update

The samba servers on the Solaris machines were updated to samba 3.6.5. There should be no user-visible changes.

1 May 2012 - 15 August 2012 — Scheduled Downtime

Hardware will be upgrading network switches throughout the summer. Most actions are not expected to disrupt network connectivity, but some may cause brief disruptions. If you notice problems, please report them.

12 April 2012 — Software Update

The samba servers on the Solaris machines were updated to samba 3.6.4. There should be no user-visible changes.

30 March 2012 — Unscheduled Downtime

Power outage on campus
LWSN and HAAS lost power (with much of campus) at 11:00PM. The generator maintained power to the data centers and closets, but the air conditioning in the lab data centers failed and the rooms began heating up. Because there was no estimation of when the power would be on, I began shutting down machines at about 11:45. At about 12:55AM the power and AC returned. Machines in the data centers were restarted after that.

30 March 2012 — Scheduled Downtime

The department print server will undergo a software update at 5:30 PM today. Printing will be unavailable for a few minutes during the update.

29 March 2012 — Scheduled Downtime

Physical facilities will be turning off the chilled water to LWSN around 5PM on March 29 for about 3 hours. This will result in reduced cooling in the building data centers. We may end up turning off some systems (with short notice) to reduce heat in the affected rooms if they get too warm.

27 March 2012 — Software Update

The default version of Thunderbird (/p/thunderbird) on Solaris 10 systems will be updated from Thunderbird 10.0.2 to Thunderbird 11.0.

27 March 2012 — Software Update

The default version of Firefox (/p/firefox) on Solaris 10 systems will be updated from Firefox 10.0.2 to Firefox 11.0.

15 March 2012 — Scheduled Downtime

The incoming mail server will be upgraded between 7AM and 8AM. During that time, incoming mail will be delayed. Sending sites should queue and resend the mail.

15 March 2012 — Scheduled Downtime

This was rescheduled from 13 March
Physical facilities will be turning off the chilled water to HAAS around 5PM on March 13 and will be turning it back on by 8AM on March 14. This will result in reduced cooling in the building data centers. They are providing backup cooling for our rooms, but it may not be sufficient. We may end up turning off some systems (with short notice) to reduce heat in the affected rooms.

12 March 2012 — Scheduled Downtime

Physical facilities will be turning off the chilled water to LWSN around 5PM on March 12 and will be turning it back on by 8AM on March 13. This will result in reduced cooling in the building data centers. They are providing backup cooling for our rooms, but it may not be sufficient. We may end up turning off some systems (with short notice) to reduce heat in the affected rooms.

12 March 2012 — Scheduled Downtime

The department print server (cups.cs.purdue.edu) will be rebooted at 5:30PM today to facilitate a system update. Printing to department printers will be inoperative for approximately 5-10 minutes.

25 February 2012 — Unscheduled Downtime

Between 16:15 and 18:10 the switch stack on the first floor of LWSN was not providing network connectivity to some hosts. It was rebooted and is working now.

24 February 2012 — Software Update

The default version of Thunderbird (/p/thunderbird) on Solaris 10 systems will be updated from Thunderbird 10.0.1 to Thunderbird 10.0.2.

24 February 2012 — Software Update

The default version of Firefox (/p/firefox) on Solaris 10 systems will be updated from Firefox 10.0.1 to Firefox 10.0.2.

18 February 2012 — Software Update

The default version of Thunderbird (/p/thunderbird) on Solaris 10 systems will be updated from Thunderbird 9 (9.0.1) to Thunderbird 10 (10.0.1).

18 February 2012 — Software Update

The default version of Firefox (/p/firefox) on Solaris 10 systems will be updated from Firefox 9 (9.0.1) to Firefox 10 (10.0.1).

18 February 2012 — Software Update

The default version of Java (/p/java) will be updated from Java 1.6.0_25 to Java 1.6.0_31. There should be no user visisble changes. The previous version will still be available for a limited time as /p/java-1.6.0_25

6 February 2012 — Scheduled Downtime

The College of Science trouble ticketing system (which we use for trouble tickets) is scheduled to be down from 20:30 until about 21:00 for an update.

25 January 2012 — Unscheduled Downtime

Between 06:30 and 07:15 the main web server was unresponsive.

23 January 2012 — Scheduled Downtime

sslab00-sslab24 (LWSN B158) will be rebooted at 9:30AM today to effect a kernel update.

22 January 2012 — Unscheduled Downtime

The XINU lab frontend machines were rebooted between 07:45 and 07:50 to clear hung NFS mounts.

3 January 2012 — Software Update

The default version of Thunderbird (/p/thunderbird) on Solaris 10 systems will be updated from Thunderbird 8 (8.0) to Thunderbird 9 (9.0.1).

3 January 2012 — Software Update

The default version of Firefox (/p/firefox) on Solaris 10 systems will be updated from Firefox 8 (8.0.1) to Firefox 9 (9.0.1).

29 December 2011 — Scheduled Downtime

Solaris 8 and Solaris 10 systems will be updated to the current patch level. They will be rebooted between 5:00 AM and 8:00 AM on Thursday, December 29. Individual machines should only take about 5 minutes to reboot some time during the three hour window, but because of server dependencies the effective downtime may be longer.

24 December 2011 — Software Update

The Linux labs (LWSN B131, B146, B148, B158, B158A, and HAAS 257) undergo an OS update tonight through tomorrow. A reboot will take place at the end, so any existing user sessions will be terminated.

20 December 2011 — Software Update

The default version of Thunderbird (/p/thunderbird) on Solaris 10 systems will be updated from Thunderbird 2 (2.0.0.24) to Thunderbird 8 (8.0).

20 December 2011 — Software Update

The default version of Firefox (/p/firefox) on Solaris 10 systems will be updated from Firefox 6 (6.0.1) to Firefox 8 (8.0.1).

19 December 2011 — Software Update

The IMAP and POP servers on Solaris systems were updated to UW IMAP 2007f (from 2007a). The software update is mainly bug fixes. One of the bug fixes is for SSL IMAP connections from Apple Mail on OS X Lion.

18 December 2011 — Unscheduled Downtime

Between about 17:05 and 18:00, the CS network connection between LWSN and HAAS was down because of a switch stack problem.

13 December 2011 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris systems was updated from ClamAV version 0.97.1 to ClamAV version 0.97.3. This is the anti-virus scanner used on our incoming mail server.

22 November 2011 — Scheduled Downtime

Power in LWSN will be shut off from 7:30PM until about 11:30PM. Physical Facilities will be evacuating the building at 7:00PM. CS managed computers in offices and instructional labs will be shut down starting around 6:30PM.
Note: Machines in the main data center and the research lab machine rooms should remain on UPS/generator power and will not be down.

16 November 2011 — Unscheduled Downtime

We are experiencing network connectivity issues between HAAS and LWSN (ITaP connection). They have been intermittent all day, but seem to have gotten noticably worse since about 6:30PM. ITaP has been notified.
As of 5PM on Thursday, November 17 we are still seeing problems, and we've received little response from ITaP on the issue.
As of about 3PM on Sunday, November 20, the issue appears to be cleared up.

15 November 2011 — Scheduled Downtime

Power in HAAS will be shut off from 5:30PM until about 9:30PM. Physical Facilities will be evacuating the building at 5:00PM. CS managed computers will be shut down starting around 4:30PM.

2 September 2011 — Software Update

The default version of Firefox (/p/firefox) on Solaris 10 systems was updated from Firefox 4 (4.0.1) to Firefox 6 (6.0.1).

24 August 2011 — Unscheduled Downtime

At about 11:00 the main department web server (www.cs.purdue.edu) became unresponsive. It appeared to be related to the auto-mounter process on the server. This was restarted and the HTTP server restarted about 11:40.

24 August 2011 — Scheduled Downtime

Machines in the Linux instructional labs (HAAS G056 and 257, LWSN B131, B146, B148, B158) will be rebooted between 8AM and 9AM today to effect a kernel update.

18 August 2011 — Scheduled Downtime

The Windows systems in HAAS G056 (escher00-23) are unavailable pending conversion to Linux. Windows computers are still available in LWSN B160.

15 August 2011 — Scheduled Downtime

The MC++ cluster (mc01-mc17) will be rebooted this morning to effect kernel and BIOS updates.

12 August 2011 - 13 August 2011 — Scheduled Downtime

The old Windows printer server (printers.cs.purdue.edu) will be down from about 5PM on Friday, August 12, until some time Saturday afternoon. This machine is hosted on the College of Science VMware cluster located in MATH, which needs to be shut down for mechanical upgrades in MATH that require building power disconnection. This is the second of two power shutdowns for the work in MATH. The first will be August 5.

This would be good opportunity to switch from using the old server printers, to the new server cups. Visit our printer setup help page for more details.

All project/research VMs hosted on the College of Science cluster will also have to be shut down during this time. They include Cordovas, CS536-01, CS536-02, Hytu, Mathur, Paandya, Skeelwin and Trilby

11 August 2011 — Scheduled Downtime

Solaris 8 and Solaris 10 systems will be updated to the current patch level. They will be rebooted between 5:00 AM and 8:00 AM on Thursday, August 11. Individual machines should only take about 5 minutes to reboot some time during the three hour window, but because of server dependencies the effective downtime may be longer.

5 August 2011 - 6 August 2011 — Scheduled Downtime

The old Windows printer server (printers.cs.purdue.edu) will be down from about 5PM on Friday, August 5, until some time Saturday morning. This machine is hosted on the College of Science VMware cluster located in MATH, which needs to be shut down for mechanical upgrades in MATH. This is the first of two power shutdowns for the work in MATH. The second will be August 12.

This would be good opportunity to switch from using the old server printers, to the new server cups. Visit our printer setup help page for more details.

All project/research VMs hosted on the College of Science cluster will also have to be shut down during this time. They include Cordovas, CS536-01, CS536-02, Hytu, Mathur, Paandya, Skeelwin and Trilby

20 July 2011 — Scheduled Downtime

Helga, the server for the Xinu backend machines, will be down for system upgrade. It should be back up by afternoon.

9 July 2011 — Scheduled Downtime

The LWSN B148 Linux systems (pod0-0 through pod5-5) will be rebooted beginning at 10PM today to effect a kernel update. Each machine will only be down for a few minutes.

1 July 2011 — Scheduled Downtime

The LWSN B148 lab has been reopened. The new computers are running Linux and are named pod0-0 through pod5-5 as before.

1 July 2011 — Scheduled Downtime

Beginning at around 3 PM EDT, the machines in LWSN B146 (moore00-24) will be unavailable for about an hour or so as their power cords are replaced and their BIOSes reflashed.

The LWSN B146 update is taking longer than anticipated, so moore00-24 will be unavailable until around 5 PM EDT.

moore00-24 are available as of 5:15 PM EDT today.

29 June 2011 — Scheduled Downtime

The LWSN B146 lab has been reopened. The new computers are running Linux and are named moore00 through moore24.

27 June 2011 — Scheduled Downtime

The LWSN B148 lab will be closed until 1 July for machine replacement. The LWSN B160 lab will be closed until further notice for machine replacement.

11 June 2011 — Software Update

The default version of Firefox (/p/firefox) on Solaris 10 systems will be updated from Firefox 3 (3.5.17) to Firefox 4 (4.0.1). The old version will be available for while in /p/firefox3.
The user interface has changed noticably from Firefox 3. If you really want to retain (mostly) the look of Firefox 3, you can find many articles on the web for recommended adjustments. One such article is http://redherring2.wordpress.com/2011/01/17/firefox-4-restoring-firefox-3-ui/ .

10 June 2011 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris systems was updated from ClamAV version 0.97 to ClamAV version 0.97.1. This is the anti-virus scanner used on our incoming mail server.

1 June 2011 — Scheduled Downtime

The XINU Lab (xinu00-21) will be closed until late summer for machine replacement.

30 May 2011 — Scheduled Downtime

The computers in LWSN B158 (sslab00-24) will be unavailable today as their operating systems are updated.

19 May 2011 — Scheduled Downtime

Solaris 8 and Solaris 10 systems will be updated to the current patch level. They will be rebooted between 5:00 AM and 8:00 AM on Thursday, May 19. Individual machines should only take about 5 minutes to reboot some time during the three hour window, but because of server dependencies the effective downtime may be longer.

18 May 2011 — Scheduled Downtime

The Linux systems in LWSN B131 (sac01-sac13) will have their OS installations updated today. As each system is updated, it will be unavailable for use for approximately two hours.

18 May 2011 — Scheduled Downtime

The LWSN B146 lab will be closed until further notice. The computers (b146-00 through b146-24) in that lab are being replaced and wil be unavailable until later this summer.

11 May 2011 — Software Update

The default versions of Java (/p/java) was updated from Java 1.5 to Java 1.6.
The default versions of Java 1.6 (/p/java-1.6) was updated from Java 1.6.0_20 to Java 1.6.0_25. There should be no user visible changes. The previous version is still available as /p/java-1.6.0_20

9 May 2011 — Software Update

The Samba server on Solaris machines will be updated from 3.5.6 to 3.5.8.

5 May 2011 — Software Update

The default version of Firefox (/p/firefox) on Solaris 10 systems was updated from Firefox 3.6.16 to Firefox 3.6.17.

10 April 2011 — Unscheduled Downtime

Because of cooling system failure, mc02-mc16 were shut down around 21:00. They will be turned back on when cooling has been restored.
The cooling system was repaired and the machine back on by about 15:30.

28 March 2011 — Unscheduled Downtime

zed.cs.purdue.edu was rebooted at 2:49PM today to clear a hung NFS mount.

25 March 2011 — Unscheduled Downtime

ITaP experienced major network disruptions starting about 05:40. The generated a lot of network traffic that flooded our router and disrupted network connectivity within CS. By about 07:50 they had corrected the majority of the problem and our networks were generally functional again.
The server for http://www.cs.purdue.edu/ was rebooted at 08:00 to correct issues related to the network outage.
The login service for the Sunrays in HAAS G040 had died and was restarted at 09:31.

25 March 2011 — Software Update

The default version of Firefox (/p/firefox) on Solaris 10 systems was updated from Firefox 3.6.15 to Firefox 3.6.16.

4 March 2011 — Software Update

The default version of Firefox (/p/firefox) on Solaris 10 systems was updated from Firefox 3.6.13 to Firefox 3.6.15.

14 February 2011 — Software Update

The default apache-mod server (/p/apache-mod) will be updated from 2.2.9 (2.2.11 on Linux) to 2.2.17

9 February 2011 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris systems was updated from ClamAV version 0.96.5 to ClamAV version 0.97. This is the anti-virus scanner used on our incoming mail server.

5 February 2011 — Unscheduled Downtime

The main router became confused about 15:20 and began causing network disruptions.
The router issues were resolved about 18:45.
There were problems with a couple switches, probably as a result of the main router issues. This caused connectivity problems for machines in LWSN B131 and LWSN 3151. They were resolved by about 23:00.

11 January 2011 — Software Update

The default apache-mod server on the wiki server was updated from 2.2.10 to 2.2.17

10 January 2011 — Unscheduled Downtime

Because of the router problems, www.cs.purdue.edu had problems. The http server was restarted about 06:20.

9 January 2011 — Unscheduled Downtime

The main router became confused about 22:50 and began causing major network disruptions. It was rebooted and mostly back to normal about midnight.

08 January 2011 — Scheduled Downtime

The LWSN 158A (mc) Linux machines will have their operating systems updated from now until the start of classes. The updates will happen on a rolling basis, so individual machines will become unavailable at random times for appoximately two hours each. Logins will be disabled during an update and idle login sessions and processes will be terminated prior to the update. Updates to machines with active login sessions will be delayed as long as possible.

06 January 2011 — Scheduled Downtime

The HAAS 257 (xinu*), LWSN B131 (sac*), LWSN B148 (pod*), LWSN B158 (sslab*), and TA (ta*) Linux machines will have their operating systems updated from now until the start of classes. The updates will happen on a rolling basis, so individual machines will become unavailable at random times for appoximately two hours each. Logins will be disabled during an update and idle login sessions and processes will be terminated prior to the update. Updates to machines with active login sessions will be delayed as long as possible.

30 December 2010 — Scheduled Downtime

NOTICE: This update was originally schedule for Wednesday, December 29, but has been delayed a day.

Solaris 8 and Solaris 10 systems will be updated to the current patch level. They will be rebooted between 5:00 AM and 8:00 AM on Thursday, December 30. Individual machines should only take about 5 minutes to reboot some time during the three hour window, but because of server dependencies the effective downtime may be longer.

30 December 2010 — Software Update

The Samba server on Solaris machines will be updated from 3.5.5 to 3.5.6.
The 3.5.6 version was configured to allow wide links and unix extensions. This is a non-standard configuration, but poses no security threat in our environment and provides functionality that has been requested by at least one local user. There should be no user visible changes to most users.

30 December 2010 — Software Update

The default version of Firefox (/p/firefox) on Solaris 10 systems will be updated from Firefox 3.5.14 to Firefox 3.6.13.

22 December 2010 — Unscheduled Downtime

About 14:30 the main router began exhibiting very sluggish performance, causing network connectivity issues. It was rebooted about 14:50 and most network connectivity was restored.
Eros.cs.purdue.edu (NIS server for cer domain) had to be rebooted about 13:00.
Machines in LWSN 3133 appear to still have connectivity issues.
LWSN 3133 is back online as of about 15:20

21 December 2010 — Scheduled Downtime

Electricians will be doing rewiring in the main LWSN Data Center to accommodate new equipment. This will require some circuits to be turned off. The following systems will be shut down from 8:45AM until about 11:15AM (the work may not require the full two hours)

Server(s)	Services
beethoven	/u/u36
brahms	/u/u16, /u/u31, /u/u40, /u/u53
cassandra	/p/p46-49, /p/p51-52 Oracle csdb, orb, walmart
cities	VMs chicago, kunming, ningbo, sanjose
cloud01-cloud15
cybil	/u/u29, /p/p42, /p/p44, /p/p45
dethklok
ector*	/u/u4, /u/u6, /u/u7, /u/u12, /u/u13, /u/u24, /u/u28, /u/u50
glacier
ibnalhaytham
nimbus01-05
tiberius01-06
xena
yosemite
zion

* We anticipate being able to hot-transfer ector's power supplies to alternate circuits to avoid any down-time, but the service window is still reserved in case this is not possible.

20 December 2010 — Unscheduled Downtime

The AC unit in 2149A has failed and the temperature is extremely high causing some of the machines to shut down to prevent damage. Currently sal.cs.purdue.edu and uranus.cs.purdue.edu are down.
Machines are back up as of about 10:05.

3 December 2010 — Scheduled Downtime

Portals.cs.purdue.edu will be down from 9AM until about 10AM.

30 November 2010 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris systems was updated from ClamAV version 0.96.4 to ClamAV version 0.96.5. This is the anti-virus scanner used on our incoming mail server.

5 November 2010 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris systems was updated from ClamAV version 0.96.3 to ClamAV version 0.96.4. This is the anti-virus scanner used on our incoming mail server.

28 October 2010 — Software Update

The default version of Firefox (/p/firefox) on Solaris 10 systems will be updated from Firefox 3.5.13 to Firefox 3.5.14. There should be no user visible changes.

13 October 2010 — Software Update

The local help (also linked to info) command was removed from Solaris machines. It was originally installed as a convenient interface to our local help files. Now that the help pages are on the support wiki, it is less useful. It also conflicts with the shell help command and the standard info command used for viewing Info format documents.

11 October 2010 — Scheduled Downtime

Router maintenance will be performed from 18:00 to 18:30. There will be general network connectivity disruption during this time window.

11 October 2010 — Software Update

zed will have its system software updated beginning at 8 AM. It will be unavailable for a few minutes as it is rebooted after the update, sometime between 10 and 11 AM.

11 October 2010 — Software Update

The default version of Firefox (/p/firefox) on Solaris 10 systems will be updated from Firefox 3.5.12 to Firefox 3.5.13. There should be no user visible changes.

21 September 2010 — Scheduled Downtime

zed and yosemite were rebooted at 7:20AM to effect a kernel update.

21 September 2010 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris systems was updated from ClamAV version 0.96.2 to ClamAV version 0.96.3. This is the anti-virus scanner used on our incoming mail server.

20 September 2010 — Scheduled Downtime

The CUPS server (cups.cs) was rebooted at 7:50AM to effect a kernel update.

17 September 2010 — Software Update

The Samba server on Solaris machines will be updated from 3.4.8 to 3.5.5. There should be no user visible changes.

16 September 2010 — Software Update

The default version of Firefox (/p/firefox) on Solaris 10 systems will be updated from Firefox 3.5.11 to Firefox 3.5.12. There should be no user visible changes.

9 September 2010 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris systems was updated from ClamAV version 0.96.1 to ClamAV version 0.96.2. This is the anti-virus scanner used on our incoming mail server.

16 August 2010 — Unscheduled Downtime

The Windows print server printers.cs.purdue.edu is down because of a failed power supply. This affects printing from most CS Windows machines. The power supply is being replaced. Expected time of repair is about 9:30.
The printer server was back up at 9:00. (This outage was unrelated to the scheduled printing outage from 6:45-7:00 AM today.)

16 August 2010 — Scheduled Downtime

There will be a brief printing outage from 6:45 AM to 7:00 AM on Monday, 16 August as the system software on the print server is updated.

12 August 2010 — Scheduled Downtime

Solaris 8 and Solaris 10 systems will be updated to the current patch level. They will be rebooted between 5:00 AM and 8:00 AM on Thursday, August 12. Individual machines should only take about 5 minutes to reboot some time during the three hour window, but because of server dependencies the effective downtime may be longer.

12 August 2010 — Software Update

The default version of TeX for Solaris systems has been updated to the TeX Live 2009 distribution. This distribution is actively being supported and has current macro packages.
With the new installation, the recommended PATH setting is /p/tex/bin. If you have problems with TeX, please see our UNIX FAQ for more information, or contact us.

2 August 2010 — Software Update

The default version of Firefox (/p/firefox) on Solaris 10 systems will be updated from Firefox 3.5.10 to Firefox 3.5.11. There should be no user visible changes.

15 July 2010 — Scheduled Downtime

On Thursday morning, July 15, 7-8AM Ector will be moved from the camelot NIS domain to the gradmath NIS domain. It will become the primary NIS server for the gradmath domain. This will require a reboot of Ector and during the time of the reboot the user filesystems it serves will be unavailable. Those filesystems are /u/u4, /u/u7, /u/u12, /u/u13, /u/u24, /u/u28 and /u/u50.
While the reboot should only take 5-10 minutes, there may be other instabilities during the full hour.

29 June 2010 — Scheduled Downtime

The XINU lab (HAAS 257) front-end machines (xinu00-xinu21) will be down this afternoon for the installation and testing of additional memory.

29 June 2010 — Software Update

The Samba server on Solaris machines will be updated from 3.4.5 to 3.4.8. There should be no user visible changes.

28 June 2010 — Unscheduled Downtime

At about 21:25 arthur was rebooted to correct a problem with the auto-mounter. It was back up at 21:30.

28 June 2010 — Software Update

The default version of Firefox (/p/firefox) on Solaris 10 systems will be updated from Firefox 3.5.7 to Firefox 3.5.10. There should be no user visible changes.

26 June 2010 — Scheduled Downtime

The Xinu Lab (HAAS 257) desktop machines have been replaced with newer workstations. All machines were operational on Friday, but were left off due to the air conditioning outage in HAAS. They are now operational.

26 June 2010 — Scheduled Downtime

The LWSN B158 Lab desktop machines have been replaced with new workstations and are now operational.

24 June 2010 - 28 June 2010 — Scheduled Downtime

The LWSN B158 Lab desktop machines will be replaced with new workstations. The old machines will be removed on Thursday and Friday. All machines should be operational Tuesday.

22 June 2010 - 25 June 2010 — Scheduled Downtime

The Xinu Lab (HAAS 257) desktop machines will be replaced with new workstations. The old machines will be removed on Tuesday. All machines should be operational Friday.

16 June 2010 — Unscheduled Downtime

At about 03:00 the NIS server data stopped responding consistently, causing problems for some clients. It was rebooted at 08:00.

8 June 2010 — Scheduled Downtime

ITaP will be replacing a defective uninteruptable power supply (UPS) in their wiring closet in LWSN from 5:45 AM to 6:30 AM. This may disrupt PAL/PAL2.0 wireless networking during the time. Please see the ITaP change request notification for more details.

31 May 2010 - 1 June 2010 — Unscheduled Downtime

The cooling unit in LWSN 2149A stopped working Monday afternoon. As a result various machines in the room had to be shut down to avoid damage and reduce the temperature in the room. The machines so far are Maxd, Sal, Mercury, Place3 and Saturn. As of 08:30 on Tuesday, there is no estimated time of repair.

The cooling unit was repaired and the machines turn on by 16:30.

20 May 2010 — Software Update

The CS mail servers (for those people not yet using ITaP mail servers) use self-signed SSL certificates for secure IMAP and POP connections. These certificates will expire on May 21, 2010. On May 20th, new certificates will be generated (that expire May 21, 2020). It may be necessary to manually accept the new certificate through your IMAP/POP client. If you are using Outlook, please see the NOTEs in the Remote Email Access of our remote access page.

20 May 2010 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris systems was updated from ClamAV version 0.96 to ClamAV version 0.96.1. This is the anti-virus scanner used on our incoming mail server.

2 May 2010 — Unscheduled Downtime

The machines in LWSN B158 and B160 are off the network as of about 21:53. The multicore cluster machines (mc00-mc17) are also off the network. There is no estimated time of repair.

The network switch was rebooted and network connectivity restored about 09:30 May 3.

30 April 2010 — Unscheduled Downtime

At about 03:00AM data, the authentication and directory services server for the camelot domain (mostly faculty UNIX/Linux systems) became unresponsive because of a disk problem. That has been repaired and the machine rebooted about 08:05. Most machines appear to have recovered, but a few required reboots.

27 April 2010 - 30 April 2010 — Unscheduled Downtime

As of about 6PM April 27 the network connection between HAAS and LWSN is experiencing connectivity and packet loss problems. There is no estimated time of repair.

The fiber link between HAAS and LWSN is still down as of 11AM April 28.

The fiber link between HAAS and LWSN is back up as of about 11:30AM. It will be a while before all systems are usable again.

There is still a problem with the Sun rays in HAAS G040 as of 3:30PM April 28. This was corrected about 3:45.

There is a network problem with HAAS G056. As of 9:00AM April 30 we are still waiting on ITaP to repair the fiber link to the room. There is no estimated time of repair.

The fiber to HAAS G056 was fixed sometime before 3:00PM on April 30.

20 April 2010 — Unscheduled Downtime

The trouble ticket service used by CS is currently unavailable and there is no estimated time of repair. If you have urgent problems, please call staff.
The system was back up about 3PM on April 21. Because of the way their mail system handled queued messages, there was some duplication of tickets.

19 April 2010 — Software Update

The default versions of Java 1.6 (/p/java-1.6) was updated from Java 1.6.0_13 to Java 1.6.0_20. There should be no user visible changes. The previous version is still available as /p/java-1.6.0_13

15 April 2010 — Unscheduled Downtime

At about 00:40 today the spam scanner on the incoming mail server stopped responding to requests, causing mail to delayed. It was restarted at 10:07 and is now processing mail. During this time, mail to our server would have been declined with a temporary failure, and should have been queued by the sending site and delivered later.

7 April 2010 — Scheduled Downtime

On Wednesday, April 7 from 5PM until 1AM, the trouble ticket service used by CS will be unavailable. Messages and reports sent to the system will be queued and delivered when the system comes back up.

7 April 2010 — Scheduled Downtime

On Thursday, May 13 from 8AM until 9AM, the wired DHCP connection network will be moved to facilitate a change of firewall configuration. Clients will need to reacquire a lease and any network connections will be lost.

2 April 2010 — Scheduled Downtime

On Friday, April 2 from 5:30PM until 9:30PM, LWSN B158 (instructional lab) will be reserved for the ACM programming competition. During this time, network access to and from the workstations in the lab will be restricted.

1 April 2010 — Unscheduled Downtime

At about 15:13 today the virus scanner on the incoming mail server stopped responding to requests, causing mail to delayed. It was restarted at 21:05 and is now processing mail. During this time, mail to our server would have been declined with a temporary failure, and should have been queued by the sending site and delivered later.

1 April 2010 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris systems was updated from ClamAV version 0.95.3 to ClamAV version 0.96. This is the anti-virus scanner used on our incoming mail server.

4 March 2010 — Unscheduled Downtime

The trouble ticket service used by CS is currently unavailable and there is no estimated time of repair. If you have urgent problems, please call staff.
The system was back up at about 10:40.

27 February 2010 — Software Update

The Samba server on Solaris machines was updated from 3.0.26a to 3.4.5. There should be no user visible changes.

12 February 2010 — Software Update

ITaP will be upgrading BoilerNet networking in LWSN between 03:00 and 07:00. During this time, wired ITaP PIC connections and PAL wireless connections will be disrupted. Disruptions may last up to 1 hour. See the ITaP notice for more details.

Connectivity within CS should not be affected by this outage, but CS network connections to campus and the outside world will be. Any non-CS networking connections (student org network, PAL wireless) will be. Updates will be posted here if we learn otherwise.

There are connectivity problems with CS network connections in HAAS as a result of this work. There is no estimated time of repair.

ITaP eventually fixed the problem at about 14:30.

11 February 2010 — Software Update

Connectivity within CS should not be affected by this outage, but CS network connections to campus and the outside world may be. Any non-CS networking connections (student org network, PAL wireless) will be. Updates will be posted here if we learn otherwise.

5 February 2010 — Software Update

4 February 2010 — Software Update

ITaP will be upgrading BoilerNet networking in HAAS between 03:00 and 07:00. During this time, wired ITaP PIC connections and PAL wireless connections will be disrupted. Disruptions may last up to 3 hours. See the ITaP notice for more details.

CS Labs in HAAS should not be affected by this outage, but CS network connections in offices, as well as non-CS networking connections (student org network, PAL wireless) will be. Updates will be posted here if we learn otherwise.

27 January 2010 - 28 January 2010 — Unscheduled Downtime

The spam scanner on the incoming mail server for cs.purdue.edu stopped accepting connections at 23:48 on 27 January. The mail server deferred delivery of mail as a result. The scanner was restarted at 08:15 on 28 January, allowing incoming mail to be accepted.

16 January 2010 — Scheduled Downtime

The MC++ Cluster machines (mc01-16) will be unavailable on Saturday, 16 January from 8PM-12AM to effect OS updates.

12 January 2010 — Software Update

The default version of Firefox (/p/firefox) on Solaris 10 systems will be updated from Firefox 3.5.6 to Firefox 3.5.7. There should be no user visible changes.

08 January 2010 — Scheduled Downtime

On Friday morning, January 8, most of the filesystems on Lore will be unavailable between 5:00 AM and 8:00 AM to allow for reallocation of space. /u/u91 and /u/u94 will remain available. /u/u3, /u/u97 and /u/u99 will only be unavailable for about 15 minutes. The rest (/u/u92, /u/u93, /u/u95, /u/u96 and /u/u98) will be unavailable for a couple hours.

31 December 2009 — Scheduled Downtime

ITaP will be retiring their Usenet (NNTP) service on December 31, 2009. See the ITaP announcement.

In conjunction with this, CS will be turning off our Usenet service as well.

For Purdue related information, there are several newer options that have largly replaced the Usenet groups.

Blackboard Vista allows users to share files and contact students in a class, along with many other features not available with Usenet
Boiler Ride service can help users find a ride to campus or be part of a carpool
Purdue-Board can be used to share information about campus activities
Course email lists can be used to communicate directly with all the students in a course

Publicly available services provide non-Purdue related functionality.

Craigslist can be used to buy or sell items locally
Google Groups supports discussion groups and also includes other Usenet groups based on common interests
Gmane provides access to many popular groups/mailing lists

30 December 2009 — Scheduled Downtime

Solaris 8 and Solaris 10 systems will be updated to the current patch level. They will be rebooted between 5:00 AM and 8:00 AM on Wednesday, December 30. Individual machines should only take about 5 minutes to reboot some time during the three hour window, but because of server dependencies the effective downtime may be longer.

23 December 2009 — Software Update

The default version of Firefox (/p/firefox) on Solaris 10 systems will be updated from Firefox 3.5.5 to Firefox 3.5.6. There should be no user visible changes.

20 November 2009 — Software Update

The default version of Firefox (/p/firefox) on Solaris 10 systems will be updated from Firefox 3.5.3 to Firefox 3.5.5. There should be no user visible changes.

1 November 2009 — Scheduled Downtime

On Sunday, November 1, the College of Science will be moving their servers to a new virtual server environment. One of the machines moving is the server for our request tracking system (i.e. http://www.cs.purdue.edu/help/trouble/ or email to software, hardware, ...).

They are moving several servers between 10AM and 4PM. The request tracking system is only expected to be down from 11AM until 1PM. During this time requests will be queued by the mail system and processed when the server is back up.

29 October 2009 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris systems was updated from ClamAV version 0.95.2 to ClamAV version 0.95.3. This is the anti-virus scanner used on our incoming mail server.

25 October 2009 — Scheduled Downtime

sslab00-24 and sac01-sac13 will be unavailable from 1:00PM to 5:30PM today for the ACM programming contest.

23 October 2009 — Unscheduled Downtime

A cooling failure in LWSN B158A has required that half the mc* systems be shut down. Currently mc05-mc09, mc12, mc14 and mc15 (ones with no active user processes) are off. It may be necessary to turn off the others. We do not yet have an estimated time for repair.
UPDATE: The remaining machines will be shut down at 11:15.
UPDATE: mc01-mc16 are back up as of 14:56.

12 October 2009 — Scheduled Downtime

On Monday, October 12 between 7AM and 9AM the filesystem /u/u28 will be moved from the server lisa to the server ector. During this time the filesystem /u/u28 will be unavailable.

12 October 2009 — Software Update

The default version of Thunderbird (/p/thunderbird) on Solaris systems was updated from Thunderbird 2.0.0.22 to Thunderbird 2.0.0.23. There should be no user visible changes.

12 October 2009 — Software Update

The default version of Firefox (/p/firefox) on Solaris 10 systems will be updated from Firefox 3.0.13 to Firefox 3.5.3. New features in 3.5 can be viewed at http://www.mozilla.com/en-US/firefox/features/

5 October 2009 — Unscheduled Downtime

A cooling failure in LWSN B158A has required that the mc01-mc16 systems be shut down. We do not yet have an estimated time for repair.
UPDATE: mc01-mc16 are back on as of 13:17, 5 October.

28 September 2009 — Unscheduled Downtime

Alkhwarizmi had a CPU fail at 15:00 and shut down. Alhkwarizmi is the server for /u/u15, /u/u18, /u/u20 and /u/u33. The fan was replaced and the server back up by 16:50.

28 September 2009 — Software Update

Updated the default version of Mathematica from 5.2 to 7.0.1.

24 September 2009 — Scheduled Downtime

At the request of Purdue Police, the cameras in LWSN will be unavailable for viewing outside the building. They will be unavailable after 3:30PM.

26 August 2009 — Scheduled Downtime

The MC++ cluster machines (mc01-mc16) will be rebooted at 9am on Wednesday, 26 August to effect a kernel update.

23 August 2009 — Scheduled Downtime

The College of Science will be physically relocating their servers on Sunday, August 23 between 6PM and 10PM. During some part of this time the CS request tracking system (e.g. mail to software@cs.purdue.edu) will be down. Requests will be queued and processed when the system comes back up.

13 August 2009 — Scheduled Downtime

Solaris 8 and Solaris 10 systems will be updated to the current patch level. They will be rebooted between 5:00 AM and 8:00 AM on Thursday, August 13. Individual machines should only take about 5 minutes to reboot some time during the two hour window, but because of server dependencies the effective downtime may be longer.

11 August 2009 — Scheduled Downtime

Ector will be down 6AM-8AM for OS upgrade from Solaris 8 to Solaris 10. During this time, the user filesystems /u/u4, /u/u7, /u/u12, /u/u13, /u/u24 and /u/u50 will be unavailable. In addition, the NNTP (usenet news) server will be down.
And of couse this upgrade is also taking longer than expected. Estimated time of completion is 9AM.

10 August 2009 — Scheduled Downtime

Arthur will be down 6AM-8AM for OS upgrade from Solaris 8 to Solaris 10. During this time, the user filesystems /u/u1, /u/u2, /u/u22 and /u/u111 will be unavailable.
The upgrade it taking longer than expected. The estimated time of completion is about 8:40.

6 August 2009 — Software Update

The default version of Firefox (/p/firefox) on Solaris 10 systems will be updated from Firefox 3.0.11 to Firefox 3.0.13. There should be no user visible changes.

4 August 2009 — Scheduled Downtime

sslab00-sslab25 will be unavailable due to lab reconfiguartion until further notice.

16 July 2009 — Unscheduled Downtime

Starting at about 02:26 there is a problem with the switch stack in LWSN 3133a causing network disruption for many machines in 3133 and 3133A.
The stack was rebooted and back on-line at 09:15.

14 July 2009 — Unscheduled Downtime

As of 07:30 the CS trouble reporting system (College of Science RT) is unavailable. There is no estimated time of repair.
The system was back online as of about 09:30.

29 June 2009 — Software Update

The main department web server (www.cs.purdue.edu) was upgraded from Apache 1.3.37 to Apache 2.2.11 at about 5PM.

26 June 2009 — Software Update

The default version of Firefox (/p/firefox) on Solaris 10 systems will be updated from Firefox 3.0.10 to Firefox 3.0.11. There should be no user visible changes.

26 June 2009 — Software Update

The default version of Thunderbird (/p/thunderbird) on Solaris systems was updated from Thunderbird 2.0.0.21 to Thunderbird 2.0.0.22. There should be no user visible changes.

25 June 2009 — Software Update

On Thursday morning from 8AM until about 9AM we will be transitioning from our current request tracking system (req) to College of Science's request tracking system (RT). During this time, mail to the CS support addresses (software, hardware, etc) will be queued.

Because RT is a descendent of req, it will look similar to the user. The most visible difference will be the ticket number in the Subject of the message. It will change from [Purdue CS #number] to [IT #number].

16 June 2009 — Unscheduled Downtime

From about 21:05 to 21:30 there was some network disruption with the switch stack in LWSN 3133a.

15 June 2009 — Software Update

Beginning June 15th, 2009 we plan to make a modification to the way we share NFS filesystems to department managed Solaris, Linux and MacOS X machines within Computer Science.

What are we doing?

Currently filesystems are in one of two NFS file sharing domains^[1] — either they are accessible to the undergrad and instructional lab machines, or they are accessible to the faculty, graduate and research machines. This dichotomy has required that graduate students and faculty with accounts on the instructional lab machines have a separate home directory for those machines. Similarly, undergraduate students who need an account on a research lab machine need a separate home directory. On June 15th we plan to combine the two file sharing domains into one.

Why is this of interest to you?

UNIX file permissions allow restrictions based on three sets of users — the owner, the group and "other". Others includes anyone else with an account in the same NFS file sharing domain. With the planned change, the domain for faculty and research machines will expand to include all students with instructional lab or CS undergrad accounts. This means "other" readable files will be readable by a larger group of "others".

Why are we doing it?

This will make it possible to share files across all CS managed *nix systems without having to maintain multiple copies. File access will still be subject to the same standard UNIX file permissions and FACLs. We are doing this primarily to give graduate students general access to the instructional lab facilities without requiring additional disk space on those machines.

Note, this change will have no impact on who is authorized to log in to and run processes on a particular machine.

^[1] There are a few exceptions which will be retained.

13 June 2009 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris systems was updated from ClamAV version 0.95.1 to ClamAV version 0.95.2. This is the anti-virus scanner used on our incoming mail server.

4 June 2009 — Scheduled Downtime

On Thursday morning between 6AM and 8AM, the following Solaris 10 servers will be updated with the latest system patches.

alkhwarizmi (u15, u18, u20, u33)
bors (p1, p3, p4, p7, p8, p9)
locutus (wiki server)
lore (u3, u91, u92, u93, u94, u95, u96, u97, u98)
lucan (www server, p5, p6, p24, p28)
niagara
pendragon (primary DNS server)

The reboots for each machine should only take about 10 minutes. During that time, the listed services/file systems will be unavailable.

31 May 2009 — Unscheduled Downtime

We are currently (as of 8AM) experiencing general network disruptions in LWSN and HAAS due to problems with the router and switches.
This should be resolved as of about 9:30.

26 May 2009 — Software Update

The default versions of Java 1.5 (/p/java-1.5) will be updated from Java 1.5.0_17 to Java 1.5.0_19. There should be no user visible changes.

26 May 2009 — Software Update

The default versions of Java 1.6 (/p/java-1.6) will be updated from Java 1.6.0_11 to Java 1.6.0_13. There should be no user visible changes.

13 May 2009 — Software Update

The default version of Firefox (/p/firefox) on Solaris 10 systems will be updated from Firefox 3.0.7 to Firefox 3.0.10. There should be no user visible changes.

9 May 2009 — Scheduled Downtime

On Saturday morning, from 5:30AM until about 7:30AM, Physical Facilities will be shutting off power to LWSN. This is necessary for eletrical vault maintenance. All CS managed computer systems will shutdown about 5:00AM and be rebooted after the power is back on.

The generator will be able to provide power to the LWSN data center, the research lab mini-machine rooms and the network closets during the maintenance, so we expect the systems in those rooms to remain on.

Most systems should be back up by 8:30AM.

29 April 2009 — Unscheduled Downtime

There was a brief network disruption with the CS networks in LWSN and HAAS beginning between 17:00 and about 17:07.

28 April 2009 — Unscheduled Downtime

There are general network routing problems with the CS networks in LWSN and HAAS beginning about 06:35. There is no estimated time of repair at this time.
A switch stack on the third floor was causing network flooding. It has been rebooted and network routing should be back to normal as of about 08:10.

18 April 2009 — Scheduled Downtime

On Saturday morning, from 6AM until about 8AM, Physical Facilities will be shutting off power to HAAS. This is necessary for eletrical vault maintenance. All CS managed computer systems will shutdown about 5:30AM and be rebooted after the power is back on.
The Xinu lab backend machines will be shut down on Friday afternoon and powered off about 5PM to minimize potential for damage from power fluctuations.

9 April 2009 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris systems was updated from ClamAV version 0.95 to ClamAV version 0.95.1. This is the anti-virus scanner used on our incoming mail server.

29 March 2009 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris systems was updated from ClamAV version 0.94.2 to ClamAV version 0.95. This is the anti-virus scanner used on our incoming mail server.

20 March 2009 — Unscheduled Downtime

One of the network switches in the stack serving the first floor of LWSN stopped handling traffic at about 20:30. It was rebooted and operational by 21:47.

20 March 2009 — Scheduled Downtime

On Friday morning, from 9AM until about 11AM, Continental will be repairing the power outlets in the desks in LWSN B148. After finishing with B148, then will be repairing the desks in LWSN B160. The repairs for both labs should be completed around 2PM. During these times the machines in the labs will be shut down.

20 March 2009 — Software Update

The default version of Thunderbird (/p/thunderbird) on Solaris systems was updated from Thunderbird 2.0.0.19 to Thunderbird 2.0.0.21. There should be no user visible changes.

17 March 2009 — Unscheduled Downtime

Dodona, the server for csadmin and portals.cs.purdue.edu became unresponsive some time between 04:50 and 07:40. It was rebooted at 07:40 and was back up by 07:48.

17 March 2009 — Scheduled Downtime

On Tuesday morning, from 8AM until about 11AM, Physical Facilities will be shutting off power to some power distribution panels in LWSN. This is expected to only impact the room lights in the basement of LWSN. The labs will be closed during this time because there will be little to no light in the basement.

16 March 2009 - 20 March 2009 — Unscheduled Downtime

There were stability problems with the network connection between LWSN and the CS networks in HAAS. This resulted in several periods of unreliable network connections for some users in HAAS.

16 March 2009 — Scheduled Downtime

On Monday morning Lore will be down from 8AM until about 9AM for a memory upgrade. Lore is the file and authentication server for the CS UNIX/Linux instructional lab machines. During this time, the machines in the instructional labs HAAS G040 (Sun Rays), HAAS 257 (xinu*), LWSN B131 (sslab*), LWSN B146 (b146-*) and LWSN B148 (pod*-*) as well as the mc* machines will be unusable.

16 March 2009 - 18 March 2009 — Scheduled Downtime

Monday, Tuesday and Wednesday, the machines in the instructional labs in LWSN will be getting memory upgrades. Each lab will be closed and the machines will generally be unavailable for remote access. The anticipated schedule is

B131 - Monday, 8AM-12PM
B158A - Monday, 1PM-5PM
B146 - Tuesday, 1PM-5PM
B148 - Wednesday, 8AM-12PM
B160 - Wednesday, 1PM-5PM

16 March 2009 — Software Update

The default version of Thunderbird (/p/thunderbird) on Solaris systems will be updated from Thunderbird 2.0.0.18 to Thunderbird 2.0.0.19. There should be no user visible changes.

16 March 2009 — Software Update

The default version of Firefox (/p/firefox) on Solaris 10 systems will be updated from Firefox 3.0.5 to Firefox 3.0.7. The default version of Firefox (/p/firefox) on Solaris 8 systems will be updated from Firefox 2.0.0.18 to Firefox 2.0.0.20. There should be no user visible changes.

15 March 2009 — Scheduled Downtime

On Sunday from 1PM until about 6PM, CS network switches in LWSN and HAAS will be getting firmware upgrades. There will disruptions of network connections for all CS networks during that time, lasting up to about 15 minutes at for a given machine.

10 March 2009 — Unscheduled Downtime

At about 10:55 the main department web server (www.cs.purdue.edu) became unresponsive. It appeared to be related to the auto-mounter process on the server. This was restarted and the HTTP server restarted about 11:25. However, the problem returned a little while later. It was eventually tracked down to a network routing issue. A workaround is in place as of about 12:35.
It now appears that this was related to other network reachability problems that began about 10:10 and were resolved about 14:15.

20 February 2009 — Scheduled Downtime

On Friday morning, from 4AM to 5AM, ITaP will be performing network maintenance that will cause campus network disruptions. Please see their page for more details.

3 February 2009 - 4 February 2009 — Scheduled Downtime

ITaP will be rerouting the CS leased LWSN-to-HAAS connection to a new fiber run and disconnecting the old fiber on Wednesday morning. The new fiber had been tested and is working. CS connections will be moved to the new fiber connection on Tuesday evening. There will be some network disruptions in HAAS during the move.

9 January 2009 [orignally posted 2008] — Software Update

The default version of Firefox (/p/firefox) on Solaris 10 systems was updated from Firefox 2.0.0.18 to Firefox 3.0.5. This is to keep the lab systems in sync. Firefox 2 is no longer supported on the Linux systems.

8 January 2009 — Scheduled Downtime

The filesystems /u/u3 and /u/u9 will be moved from the server Xinuserver to the server Lore on Thursday morning, January 8 between 8:00AM and 8:30AM. The /u/u9 filesystem will be merged into the /u/u3 filesystem. During the more, the filesystems will be unavailable. Existing NFS filesystem mounts will need to be remounted. After the move, the machine Xinuserver.cs.purdue.edu will be removed from service.

5 January 2009 — Scheduled Downtime

Locutus.cs.purdue.edu and the hosted wikis will be down from 8AM until about 9AM to reallocate disk space. The hosted wikis include

wiki.cs.purdue.edu
acm.cs.purdue.edu
admin.cs.purdue.edu
calendar.cs.purdue.edu
kioskapp.cs.purdue.edu
ml.cs.purdue.edu
mlg.cs.purdue.edu
multicore.cs.purdue.edu
nossdav09.cs.purdue.edu
opviews.cs.purdue.edu
orion.cs.purdue.edu
outreach.cs.purdue.edu
secant.cs.purdue.edu
sendor.cs.purdue.edu
sigai.cs.purdue.edu
sigapp.cs.purdue.edu
sigcp.cs.purdue.edu
siggd.cs.purdue.edu
siglwsn.cs.purdue.edu
sigops.cs.purdue.edu
sigos.cs.purdue.edu
sss.cs.purdue.edu
support.cs.purdue.edu
uncert.cs.purdue.edu
veryidx.cs.purdue.edu
www.isi.purdue.edu

31 December 2008 — Scheduled Downtime

Solaris 8 and Solaris 10 systems will be updated to the current patch level. They will be rebooted between 5:00 AM and 8:00 AM on Wednesday, December 31. Individual machines should only take about 5 minutes to reboot some time during the two hour window, but because of server dependencies the effective downtime may be longer.

31 December 2008 — Software Update

The default versions of Java 1.5 (/p/java-1.5) will be updated from Java 1.5.0_16 to Java 1.5.0_17. There should be no user visible changes.

31 December 2008 — Software Update

The default versions of Java 1.6 (/p/java-1.6) will be updated from Java 1.6.0_07 to Java 1.6.0_11. There should be no user visible changes.

30 December 2008 — Scheduled Downtime

Sal.cs.purdue.edu will be down from 12PM until about 3PM to upgrade two of the disks.

29 December 2008 — Scheduled Downtime

Maxd.cs.purdue.edu will be down from 8AM until about 11AM to upgrade two of the disks.

29 December 2008 - 31 December 2008 — Software Update

The following old versions of software will be removed from the CS Solaris systems during the Christmas semester break, the week of December 29.

Java

In general you should be using /p/java, but there are still a few applications that may require older versions for compatibility. The latest of major versions 1.4, 1.5 and 1.6 will be kept around for the time being.

/p/java-1.1.8_12 (/p/java-1.1)
/p/java-1.2.2_07 (/p/java-1.2)
/p/java-1.3.1_01 (/p/java-1.3)
/p/java-1.5.0_08: The latest 1.5.x version install is 1.5.0_16 (/p/java-1.5)
You probably should be using /p/java anyway
/p/java-1.6.0_05: The latest 1.6.x version install is 1.6.0_07 (/p/java-1.6)

12 December 2008 — Unscheduled Downtime

As of about 06:24 the ITaP LWSN-to-HAAS fiber connection is down. ITaP is investigating it.
The fiber link was moved back to the old connection after the new one was found to be unusable.

12 December 2008 — Scheduled Downtime

ITaP will be rerouting the CS leased LWSN-to-HAAS connection to a new fiber run between 6AM and 6:30AM. The link should only be down for about 5 minutes. This will disrupt all CS network connections between HAAS and anywhere outside the HAAS building.
The new fiber was defective and the connection was eventually moved back to the old connection about 13:30.

28 November 2008 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris systems was updated from ClamAV version 0.94.1 to ClamAV version 0.94.2. This is the anti-virus scanner used on our incoming mail server.

27 November 2008 — Unscheduled Downtime

Lore started experiencing memory shortage problems about 17:00, causing problems with the automounter which made user home directories unavailable. It was rebooted at 00:47 to correct the problem.

25 November 2008 — Software Update

The default versions of Thunderbird (/p/thunderbird) will be updated from Thunderbird 2.0.0.14 to Thunderbird 2.0.0.18. There should be no user visible changes.

25 November 2008 — Software Update

The default versions of Firefox (/p/firefox) on Solaris systems will be updated from Firefox 2.0.0.15 to Firefox 2.0.0.18. There should be no user visible changes.

21 November 2008 — Scheduled Downtime

The default version of apache (/p/apache-mod) will be updated from 2.2.9 to 2.2.10 on the wiki server. All individual wikis will be restarted around 10AM.

8 November 2008 — Unscheduled Downtime

The network switch stack in LWSN 2149A began exhibiting performance problems about 12:08. It was rebooted at 13:23, correcting the problem.

4 November 2008 — Scheduled Downtime

ITaP will be switching the voice phone system in HAAS to the new wiring that was installed this summer. Users should expect 5-20 minute phone connectivity disruptions during the day, 6AM-4PM. This should not affect data network connectivity.

4 November 2008 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris systems was updated from ClamAV version 0.94 to ClamAV version 0.94.1. This is the anti-virus scanner used on our incoming mail server.

27 October 2008 — Scheduled Downtime

Cassandra, the Oracle server for CSDB and fileserver for the oracle9 package will be down from 8:00AM until about 8:30AM to replace a faulty fiber interface.

22 October 2008 — Unscheduled Downtime

The fiber connection between LWSN and HAAS went down at about 13:34, causing network disruption for all CS network connections in HAAS. We are investigating the cause -- there is no estimated time of repair.
The problem is with the ITaP fiber connection between LWSN and HAAS. We have file a trouble ticket with them, but have received no response yet.
The link was restored about 19:00

21 October 2008 — Unscheduled Downtime

At about 05:55 the network switch stack in LWSN 3133A lost track of one or more switches, causing network connectivity problems for most of the machines in the room. The switch stack was rebooted at 08:00 to correct the problem.

20 October 2008 — Software Update

Removed /etc/hosts.equiv on arthur.cs.purdue.edu. This will have an impact on any users using rcp or rsh from arthur.cs.purdue.edu, ector.cs.purdue.edu or gwen.cs.purdue.edu to arthur.cs.purdue.edu. This should have minimal impact as users should be using scp/ssh.

18 October 2008 — Unscheduled Downtime

Cassandra, the database server for CSDB and fileserver for the oracle9 package is down. The server should be backup up by about 4PM.

17 October 2008 — Unscheduled Downtime

Cassandra, the database server for CSDB and fileserver for the oracle9 package is down as of about 9AM. The server is back up as of 9:30AM.

14 October 2008 — Scheduled Downtime

The Antz cluster (antz1-antz8) will be moved to the HAAS data center.

13 October 2008 — Scheduled Downtime

The Shamu cluster (shamu1-shamu6) is being moved to the HAAS data center today.

8 October 2008 — Unscheduled Downtime

The server Punch stopped responding about 23:10. It was rebooted at 07:43 and is back on line. It appears the SCSI controller lost communication with one of the disks.

8 October 2008 — Scheduled Downtime

Cassandra, the Oracle server for CSDB and fileserver for the oracle9 package will be down from 7:30 until about 9 for some maintenance to replace failing disks.

2 October 2008 — Unscheduled Downtime

Cassandra, the database server for CSDB and fileserver for the oracle9 package stopped responding as of about 03:00. It was rebooted and back on-line about 08:10. This also impacted the CS portal (https://portals.cs.purdue.edu/)

19 September 2008 — Unscheduled Downtime

ITaP performed network maintenance on their switches in Lambert and the Telecommunications building between 4:30AM and 6:30AM. During that process something happened that broke our connection to campus and the outside world. For some sites it is just degraded performance, for others it results in not being able to reach the site. ITaP had identified the problem at about 8:30 and is working to correct it. There is no estimated time of repair.
This was fixed as of about 9:15.

6 September 2008 — Unscheduled Downtime

The switch stack in LWSN 2149A started exhibiting problems around 09:10, causing network connectivity problems for the machines in 2149 and 2149A. The switch was rebooted at 16:10 to correct the problem.

4 September 2008 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris systems was updated from ClamAV version 0.93.3 to ClamAV version 0.94. This is the anti-virus scanner used on our incoming mail server.

29 August 2008 — Unscheduled Downtime

The server lore.cs.purdue.edu was unintentionally shut down at 09:15. It was rebooted and back up by 09:27. This would have caused disruption for service in HAAS G040, LWSN B131, B146, and B148.

27 August 2008 — Unscheduled Downtime

A cooling failure in LWSN B158A has required that the mc01-mc16 systems be shut down. We do not yet have an ETA on repair.
UPDATE: mc01-mc16 are back on as of 9:45 AM, 28 August.

22 August 2008 — Scheduled Downtime

The B158A (mc01-mc16) computers will be rebooted at 10 AM today to effect a kernel update. Each machine will be down for 2-3 minutes.

21 August 2008 — Scheduled Downtime

The Linux installations on the B131 (sslab*), B148 (pod*-*), and B158A (mc*) computers will be updated today. Each system will be unavailable for 2-3 minutes as it reboots.

21 August 2008 — Scheduled Downtime

ITaP will be performing network maintenance in HAAS between 3:45AM and 4:15AM that may result in network disruption for ITaP network connections, including PAL wireless.

18 August 2008 — Scheduled Downtime

Lore, the account and file server for the undergrad accounts and instructional UNIX/Linux labs will be upgraded on Monday morning, August 18 from 7AM-9AM. The hardware will be upgraded from a Sun Enterprise 450 to a Sun Fire v445. The software will be upgraded from Solaris 8 to Solaris 10. During the upgrade window, the instructional labs in LWSN B131, LWSN B146, LWSN B148, LWSN B158A (mc* cluster) and HAAS 257 will be unavailable.

17 August 2008 — Unscheduled Downtime

The main network switch began exhibiting routing irregularities yesterday evening. This caused intermittent network connectivity problems for some hosts. The router was rebooted and full connectivity restored about 16:22.

12 August 2008 — Scheduled Downtime

Solaris 8 and Solaris 10 systems will be updated to the current patch level. They will be rebooted between 5:00 AM and 8:00 AM on Tuesday, August 12. Individual machines should only take about 5 minutes to reboot some time during the two hour window, but because of server dependencies the effective downtime may be longer.

8 August 2008 — Software Update

The default versions of matlab (/p/matlab) on the Solaris 8 SPARC systems was reverted to Matlab 7.3 (2006a). Matlab 7.4 (2007a) is the latest version available for Solaris 8 SPARC, but does not support the Symbolic Math Toolbox. Matlab 7.3 is the latest fully functional version for Solaris 8 SPARC.

7 August 2008 — Software Update

The default versions of Java 1.5 (/p/java-1.5) will be updated from Java 1.5.0_08 to Java 1.5.0_16. There should be no user visible changes.

7 August 2008 — Software Update

The default versions of Java 1.6 (/p/java-1.6) will be updated from Java 1.6.0_05 to Java 1.6.0_07. There should be no user visible changes.

5 August 2008 — Unscheduled Downtime

The main network switch started dropping packets around 18:12, causing connectivity problems for some hosts. It was rebooted and full connectivity restored about 19:44.

30 July 2008 — Scheduled Downtime

Electrical power will be shut off in LWSN B131, B132, B132A, B134, B141A, B146, B148, and B151 from 8AM until noon on Wednesday, July 30th to facilitate the rewiring of B132. The sslab (B131), Linux pod lab (B148), and the antz and shamu clusters (B132A) will be shut down at 7:00am. They will be powered back up upon completion of the electrical work.

25 July 2008 - 27 July 2008 — Scheduled Downtime

This schedule is tentative, subject to changes by Physical Facilities and Huston Electric, Inc.
The schedule has been revised. As a result there should be no need to shut off electrical power in HAAS on July 25-27.

18 July 2008 - 20 July 2008 — Scheduled Downtime

This schedule is tentative, subject to changes by Physical Facilities and Huston Electric, Inc.
Electrical power will be shut off on the ground floor of HAAS. All CS machines on the affected floor of HAAS will be shutdown at about 8AM before the power is turned off and will be rebooted after power is restored.

17 July 2008 — Software Update

The default version of matlab (/p/matlab) on the Solaris 10 SPARC, MacOSX Intel, and Linux systems will be updated from Matlab 7.4 (2007a) to Matlab 7.6 (2008a). This version is not available for Solaris 8 SPARC, Solaris x86, MacOSX PowerPC. The Solaris 8 SPARC systems will remain at 7.4.

15 July 2008 — Unscheduled Downtime

One of the disks on the Oracle server went off-line and the server was shut down at about 14:15 to correct it. It was back up by about 14:25.

12 July 2008 — Scheduled Downtime

Network switch software will be upgraded in LWSN on Saturday starting at 9AM. Each switch will take about 30 minutes to upgrade and configure, so CS network connectivity (LWSN and HAAS) will be disrupted throughout the day.
Your individual connection may only be down for 30 minutes, but connectivity to other machines may be affected by two or more outages as other switches in the path are upgraded.
Please do not reboot machines in an attempt to correct this problem.

11 July 2008 - 13 July 2008 — Scheduled Downtime

This schedule is tentative, subject to changes by Physical Facilities and Huston Electric, Inc.
Electrical power will be shut off on the first and second floor of HAAS. All CS machines on the affected floors of HAAS will be shutdown at about 8AM before the power is turned off and will be rebooted after power is restored.
The CS network connection for HAAS will also be off, which will interrupt network connectivity for machines on the ground floor as well.

11 July 2008 — Software Update

The default versions of Firefox (/p/firefox) on Solaris systems will be updated from Firefox 2.0.0.14 to Firefox 2.0.0.15. There should be no user visible changes.

9 July 2008 — Software Update

A new version of the BIND DNS name server was installed on CS Solaris machines running name servers. It was upgraded from BIND 9.4.1-P1 to BIND 9.4.2-P1. There should be no user-visible changes.

8 July 2008 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris systems was updated from ClamAV version 0.93.1 to ClamAV version 0.93.3. This is the anti-virus scanner used on our incoming mail server.

5 July 2008 — Unscheduled Downtime

One of the CPU fans in Alkwarizmi failed at 11:11AM which caused the system to shut down. Temporary repairs were made and the server was back up about 4:41PM.

19 June 2008 — Software Update

The CGI wrapper (cgiwrap) on the CGI server (www-cgi.cs.purdue.edu) was upgraded from cgiwrap-3.10 to cgiwrap-4.1. There should be no user-visible changes. The primary purpose of the version update was to provide a security patch.

9 June 2008 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris systems was updated from ClamAV version 0.93 to ClamAV version 0.93.1. This is the anti-virus scanner used on our incoming mail server.

6 June 2008 — Unscheduled Downtime

The upgraded CS web server was exhibiting inconsistent network behavior when accessed from outside CS. This was not noticed until the problem was reported in the afternoon. After serveral attempts to remedy the situation, which caused disruption in service between 4PM and 6PM, the old server was returned to service. It was up and running by 6PM.

6 June 2008 — Scheduled Downtime

The main web server (www.cs.purdue.edu) will be down for a system upgrade from 7AM until 8AM. This machine also provides the public FTP server (ftp.cs.purdue.edu) and file service for /p/www. These services will be unavailable during the upgrade time.
After instability with the upgraded machine, the previous server was returned to service.

3 June 2008 — Scheduled Downtime

The server lake.cs.purdue.edu is scheduled to be down for OS updates from 8:00 AM to 5:00 PM. Home directories served by lake will also be unavailable during that time.

29 May 2008 — Scheduled Downtime

The server bors.cs.purdue.edu (server for most package directories) will be rebooted between 6:00 AM and 6:15 AM to install system updates.

15 May 2008 — Scheduled Downtime

Solaris 8 and Solaris 10 systems will be updated to the current patch level. They will be rebooted between 5:00 AM and 8:00 AM on Thursday, May 15. Individual machines should only take about 5 minutes to reboot some time during the two hour window, but because of server dependencies the effective downtime may be longer.

9 May 2008 — Software Update

Pine 4.64 was installed in /opt/csw/bin on Solaris machines a couple years ago. Because /opt/csw/bin is in the default path of most users, there was no longer a need for users to use the /p/pine path. However, /p/pine was never updated to reference this new version (.i.e for those users still using the /p/pine path). /p/pine will be updated to provide backward compatibility.

9 May 2008 — Software Update

The default versions of Thunderbird (/p/thunderbird) will be updated from Thunderbird 2.0.0.12 to Thunderbird 2.0.0.14. There should be no user visible changes.

7 May 2008 - 31 May 2008 — Scheduled Downtime

The HAAS G040 lab will be closed while the machines are upgraded to Sun Ray 270s.

29 April 2008 - 1 August 2008 — Scheduled Downtime

The HAAS 175 lab will be closed during the summer to allow for building infrastructure upgrades to power and network wiring.

25 April 2008 — Unscheduled Downtime

The main web server (www.cs.purdue.edu) was very slow to respond. At 11:18 the server was rebooted. It was back up by 11:23.

21 April 2008 — Software Update

The default versions of Firefox (/p/firefox) on Solaris systems will be updated from Firefox 2.0.0.12 to Firefox 2.0.0.14. There should be no user visible changes.

18 April 2008 — Scheduled Downtime

ITaP will be installing an upgrade on network switches in several buildings between 4AM and 6AM on Friday, April 18. One of the buildings affected is HAAS. The upgrade will require two reboots of each network switch, each reboot about 10 minutes. During these two 10 minute intervals, network connectivity in the building will be unreliable.
Note, LWSN should not be affected by this upgrade.
Note, this was originally scheduled for Friday, April 11, but ITaP has rescheduled it for the date given above.

16 April 2008 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris systems was updated from ClamAV version 0.92.1 to ClamAV version 0.93. This is the anti-virus scanner used on our incoming mail server.

15 April 2008 — Unscheduled Downtime

At about 04:11 the server for the Xinu lab backend machines (helga) began experiencing memory shortage. It was rebooted at 07:20.

10 April 2008 — Scheduled Downtime

ITaP will be doing electrical work in HAAS that will require turning off the power conditioner in HAAS 274 from 9:00AM to 12:00noon (they may not need to whole three hours). This power conditioner distributes power to HAAS 175, HAAS 257 and HAAS 274. All the computers in HAAS 175 and some of the computers in HAAS 257 will be off during this time. They will be shut down about 8:00 so they are off before the power is turned off. There should not be in computers in HAAS 274 that are still connected to the power conditioner.

6 April 2008 — Unscheduled Downtime

At about 17:30 the virus scanner on the incoming mail server stopped processing messages, which stopped inbound mail. It was restarted at about 21:30.

2 April 2008 — Software Update

The default versions of Java 1.6 (/p/java-1.6) was updated from Java 1.6.0_01 to Java 1.6.0_05. There should be no user visible changes.

1 April 2008 — Unscheduled Downtime

The grad domain server (lisa.cs.purdue.edu) stopped responding at about 13:03. It was rebooted and was back up by 13:17.

26 March 2008 — Unscheduled Downtime

The main web server (www.cs.purdue.edu) was very slow to respond. At 11:41 the httpd service was shutdown and restarted. It was back up by 11:43.

24 March 2008 — Unscheduled Downtime

Lore rebooted at 11:35 because of an uncorrectable memory error and was back up by about 11:41. There was no staff intervention.

14 March 2008 - 15 March 2008 — Scheduled Downtime

The workstations in LWSN B146 and LWSN B158 will be unavailable for general use while they are used for the TopCoder High School Tournament

12 March 2008 — Scheduled Downtime

The workstations in LWSN B146 will be unavailable for general use from 8AM until about 1PM while they are being configured for the TopCoder High School Tournament

11 March 2008 — Scheduled Downtime

The CS Portals site (https://portals.cs.purdue.edu/) will be down from 8AM until about 8:30 while more memory is installed in the server.

8 March 2008 — Scheduled Downtime

Physical Facilities is planning to do power vault maintenance for HAAS on Saturday morning, March 8. This will require that power be turned off for the entire building during this time. The current scheduled outage time is from 5AM until 8AM, so CS computer systems in HAAS will be scheduled to be shut down about 04:45.
Physical Facilities actually disconnected power at 04:30 contrary to their notices. Machines were not shut down cleanly.
Power was back on at 05:56. All machines (except hardware failures) were back up by 07:35.

6 March 2008 — Unscheduled Downtime

The auto-mounter process on Lore became unresponsive. A live restart did not fix it, so Lore was rebooted about 06:36. It was back up by 06:49.

4 March 2008 — Software Update

The default versions of Thunderbird (/p/thunderbird) will be updated from Thunderbird 2.0.0.9 to Thunderbird 2.0.0.12. There should be no user visible changes.

25 February 2008 — Scheduled Downtime

The workstations in LWSN B146 will be down from about 8AM-11AM so a second disk can be installed for the TopCoder High School Tournament March 14 & 15. Each machine will only be down for about 10 minutes.
This maintenance was rescheduled to 1PM-4PM.

20 February 2008 — Unscheduled Downtime

About 20:30 the network on the first floor of LWSN went out.
The primary switch in the stack was rebooted and the network was available again about 23:15.

18 February 2008 — Unscheduled Downtime

The CS network began experiencing performance issues around 13:20. By 14:00 many systems were unable to access the network in general. The problem was isolated to a research lab around 18:00 at which time most machines were back on the network. By 18:30 the remaining systems were back on the network.

14 February 2008 — Software Update

The default versions of Firefox (/p/firefox) on Solaris systems will be updated from Firefox 2.0.0.11 to Firefox 2.0.0.12. There should be no user visible changes.

12 February 2008 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris systems was updated from ClamAV version 0.92 to ClamAV version 0.92.1. This is the anti-virus scanner used on our incoming mail server.

11 February 2008 — Unscheduled Downtime

The Linux systems were rebooted during the day to install a system patch.

26 January 2008 — Unscheduled Downtime

The server Helga (Xinu backend control) is down. It is expected to be repaired and back on some time this afternoon. Helga was rebooted and available at 12:06.

25 January 2008 — Unscheduled Downtime

Bors (package server) was rebooted at 04:46 and was back up by 04:54.

25 January 2008 — Unscheduled Downtime

At about 10:30 Lucan (http server) lost track of the system disk. It was power-cycled and rebooted. It was back up by 10:44.

24 January 2008 — Unscheduled Downtime

Locutus (wiki server) was rebooted at 22:43 and was back up by 22:49.

8 January 2008 — Software Update

The GTK2 libraries on the Solaris 8 systems were reverted back to the previous version (2.10.11) because there were problems with the 2.12.3 version causing session lockups.

2 January 2008 — Unscheduled Downtime

There have been intermittent temporary network disruptions in HAAS for the past couple weeks. The problem was tracked down to a defective link between two switches. The link was replaced today and it appears to have solved the problem.

2 January 2008 — Scheduled Downtime

The undergraduate Mac OS X server (davros.cs.purdue.edu) will have it's operating system upgraded from Mac OS X 10.4 to Mac OS X 10.5. The system will be unavailable from 7 am to 9 am.
Update: Due to illness, this update has been pushed back to January 4, 2008.

28 December 2007 — Software Update

The IMAP and POP servers on Solaris systems were updated to the UW IMAP 2007 version. The software update is nothing more than patches and bug fixes.
However, there are two configuration changes associated with the update. First, non-SSL IMAP and POP connections have been disabled. You will need to configure your mail client to use SSL for retrieving your mail, even for local connections.
Second, the default mailbox type has been changed from the old (UNIX) mbox format to the mix format. The advantage of the mix format is that it allows folders to contain messages and subfolders. It also allows better simultaneous access to a folder by more than one IMAP client.

27 December 2007 — Scheduled Downtime

ITaP will be upgrading the fiber optic networking that provides network connectivity to the HAAS building. The work will be done between 7AM and 12noon. During this time there will be no network connectivity outside the building, including connections to LWSN. Please see the ITaP posting for more details or updates.
Update: The work time has been reduced to 8AM to 10AM.

20 December 2007 — Scheduled Downtime

Solaris 8 and Solaris 10 systems will be updated to the current patch level. They will be rebooted between 5:00 AM and 8:00 AM on Thursday, December 20. Individual machines should only take about 5 minutes to reboot some time during the two hour window, but because of server dependencies the effective downtime may be longer.
Update: The Solaris 10 x86 systems were not updated because of problems with the patch distribution.

19 December 2007 — Scheduled Downtime

The public wireless access points maintained by CS in HAAS will be removed at the end of the fall semester. These access points are currently providing ITaP PAL 1.0 service but are connected to the CS wired network infrastructure. We are removing that wiring to make way so ITaP can rewire the building. After that rewiring ITaP will install standard PAL 2.0 access points. CS users who are currently using the wireless service in HAAS will need to use wired DHCP connections during the rewiring project.
Note, this will not directly affect the private research group access points.
Update: ITaP has agreed to take over the management of the currently connected access points in HAAS. This will result in having PAL 2.0 service as well as the old PAL 1.0 service, but will eliminate the CS wireless access.

19 December 2007 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris systems was updated from ClamAV version 0.91.2 to ClamAV version 0.92. This is the anti-virus scanner used on our incoming mail server.

18 December 2007 — Software Update

The default version of Firefox (/Applications/Firefox.app) on Mac OS systems has been updated to Firefox 2.0.0.11. There should be no user visible changes.

13 December 2007 — Scheduled Downtime

The OS on the server Alkhwarizmi will be updated on Thursday morning, December 13 from Solaris 8 to Solaris 10. The system will be down from 6AM until about 8AM. During the upgrade, the filesystems /u/u15, /u/u18 and /u/u20 will not be available.

12 December 2007 — Unscheduled Downtime

At about 9:57AM most of the CS network connections in HAAS went down. The situation is under investigation.
Update: Network connectivity was restored about 10:37AM. There was a spanning tree problem on one of the switches.

5 December 2007 — Software Update

The default versions of Firefox (/p/firefox) on Solaris systems will be updated from Firefox 2.0.0.10 to Firefox 2.0.0.11. There should be no user visible changes.

4 December 2007 — Scheduled Downtime

Power will be turned off from 8AM until noon in HAAS 175 and a portion of HAAS 257. In preparation for this, the XINU frontend machines (xinu00-xinu21) in HAAS 257 will be shut down at 7:30AM. They and the workstations in HAAS 175 will be unavailable during the power outage.
Update: There were problems with the power distribution work that will require the labs to be down until 5PM

3 December 2007 — Software Update

The default versions of Firefox (/p/firefox) on Solaris systems will be updated from Firefox 2.0.0.9 to Firefox 2.0.0.10. There should be no user visible changes.

30 November 2007 — Software Update

The default versions of Thunderbird (/p/thunderbird) will be updated from Thunderbird 2.0.0.6 to Thunderbird 2.0.0.9. There should be no user visible changes.

17 November 2007 — Unscheduled Downtime

The cooling unit it LWSN B158A shut off due to a smoke alarm that needs to be reset by zone maintenance. As a result the multi-core cluster (mc01-mc16) was shut down to avoid heat damage.
The smoke sensor was removed and the cooling unit restarted. The multi-core cluster was returned to server on Tuesday, November 20.

9 November 2007 — Unscheduled Downtime

Network connectivity was disrupted between CS subnets between about 00:49 and 01:01.

7 November 2007 — Software Update

The default versions of Firefox (/p/firefox) on Solaris systems will be updated from Firefox 2.0.0.8 to Firefox 2.0.0.9. There should be no user visible changes.
Due to an oversight, this was not done until Thursday, 8 November.

24 October 2007 — Software Update

The default versions of Firefox (/p/firefox) on Solaris systems will be updated from Firefox 2.0.0.7 to Firefox 2.0.0.8. There should be no user visible changes.

18 October 2007 — Unscheduled Downtime

Network connectivity was disrupted on the second floor of HAAS from 16:15 until about 16:40.

15 October 2007 — Unscheduled Downtime

About 15:28 the CS network became very slow due to some switch spanning tree problems. Most of the LWSN building is OK, but the HAAS CS network is currently disconnected.
The main switch processor was rebooted about 23:55 and most routing to HAAS was restored. There is still a problem with broadcast IP traffic from HAAS to LWSN, affecting CS DHCP/Wireless connections in HAAS.
The top level switch in HAAS was reset about 08:45 and broadcast traffic is now flowing correctly.

14 October 2007 — Unscheduled Downtime

About 09:26 one of the switches in 3133A disappeared from the stack, causing network connectivity problems for several machines in the room including Zardoz and Duo1-3. The switch was rebooted and connectivity restored about 11:35.

10 October 2007 — Unscheduled Downtime

Lucan (www.cs.purdue.edu) had NFS/AMD problems due to exhausted memory. The machine was rebooted about 07:31 and was back up and available at about 07:38.

8 October 2007 — Unscheduled Downtime

Main power went out at about 17:32 in LWSN and HAAS and returned at about 17:38. Machines in the main LWSN data center and lab machine rooms in LWSN maintained power.
However, the power fluctuation caused problems for the switch stack in LWSN2149A, which resulted in loss of connectivity for those machines.

3 October 2007 — Unscheduled Downtime

Locutus (wiki.cs.purdue.edu) was unintentionally rebooted about 13:18. The power cord was accidentally unplugged when other equipment was located in the rack. It was back up by 13:23.

27 September 2007 — Unscheduled Downtime

Lore will be rebooted between 7:30AM and 8:00AM to investigate a memory module problem. During this time, the instructional labs may be affected.
During the reboot, the defective memory module failed and the bank was removed. Lore was down from 07:38 until 08:10.

27 September 2007 — Unscheduled Downtime

Main power went out at about 21:23 in LWSN and HAAS and returned at about 21:26. Machines in the main LWSN data center and lab machine rooms in LWSN maintained power.

25 September 2007 — Software Update

The Samba server on Solaris machines was updated from 3.0.25b to 3.0.26a. There should be no user visible changes.

21 September 2007 — Software Update

The default versions of Firefox (/p/firefox) on Solaris systems will be updated from Firefox 2.0.0.6 to Firefox 2.0.0.7. There should be no user visible changes.

24 August 2007 - 25 August 2007 — Unscheduled Downtime

The switch stack in LWSN 3133A stopped communicating with the rest of the network at about 23:20 on 24 August. It was rebooted at 09:50 on 25 August and re-established connection.

21 August 2007 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris systems was updated from ClamAV version 0.91.1 to ClamAV version 0.91.2. This is the anti-virus scanner used on our incoming mail server.

20 August 2007 — Unscheduled Downtime

Main power went out at about 10:22 in LWSN and HAAS (as well as large sections of campus and West Lafayette) and returned at about 10:35. Machines in the main LWSN data center and lab machine rooms in LWSN maintained power.

9 August 2007 — Software Update

Solaris 8 and Solaris 10 systems will be updated to the current patch level. They will be rebooted between 5:00 AM and 8:00 AM on Tuesday, May 15. Individual machines should only take about 5 minutes to reboot some time during the two hour window, but because of server dependencies the effective downtime may be longer.

6 August 2007 — Software Update

The Samba server on Solaris machines was updated from 3.0.25 to 3.0.25b. There should be no user visible changes.

3 August 2007 — Software Update

The 1.5.* versions of Firefox and Thunderbird will be removed from Solaris systems.

3 August 2007 — Software Update

The default versions of Firefox (/p/firefox) will be updated from Firefox 2.0.0.5 to Firefox 2.0.0.6. There should be no user visible changes.

3 August 2007 — Software Update

The default versions of Thunderbird (/p/thunderbird) will be updated from Thunderbird 2.0.0.5 to Thunderbird 2.0.0.6. There should be no user visible changes.

1 August 2007 - 3 August 2007 — Software Update

Wired DHCP connections within CS will be moved from an externally accessible network (128.10.16.0/24) to an internal-only network (128.10.160.0/24) with NAT access to the outside world. This will provide protection for laptops from outside attacks while continuing to allow outside access.

30 July 2007 — Software Update

Over the past year we have been transitioning from the web-based "people" pages of all CS faculty, full-time staff, and students to the new "bio" page style. The old pages were generated from Purdue electronic directory information, which is incomplete and often out of date. The new "bio" pages are generated from a database maintained internally by the department and provide biographical information that you can manage yourself.

By July 30, the transition will be complete and all departmental "people" pages will point to the new "bio" pages.

You will continue to have two publishable URLS:

(1) Your department bio page: http://www.cs.purdue.edu/people/login

The content of this page is edited by logging in to your CS portals account at https://portals.cs.purdue.edu/ and selecting My Biography from the Resources link on the left. The layout and design of the "bio" page will be updated from time to time to be consistent with the evolving design of the department web site.

(2) Your personal home page: http://www.cs.purdue.edu/homes/login

This page is completely under your control (subject to Purdue policies, of course!). You can use the web content editor of your choice. (The files are located in your UNIX .www directory.)

Note that only CS faculty, full-time staff, and students have "bio" pages. The people link for all other CS accounts is automatically redirected to the corresponding personal home page.
This change was not completed until Wednesday, August 1

28 July 2007 — Unscheduled Downtime

The switch stack on the first floor of LWSN lost track of one of the switches about 12:40, causing offices in the northwest area to lose network connectivity. The stack was rebooted with the latest firware about 17:20 and connectivity was restored.

25 July 2007 — Software Update

The default versions of Firefox and Thunderbird on Solaris systems were updated on Wednesday, July 25.

Product	Old	New
Firefox	2.0.0.4	2.0.0.5
Thunderbird	2.0.0.4	2.0.0.5

There should be no user-visible changes.

21 July 2007 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris systems was updated from ClamAV version 0.91 to ClamAV version 0.91.1. This is the anti-virus scanner used on our incoming mail server.

18 July 2007 — Unscheduled Downtime

An unresponsive system process on the web sever required a reboot. Service was restored around 17:05.

13 July 2007 — Software Update

The ClamAV performance issues appear to be resolved. We are now running 0.91.

11 July 2007 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris systems was updated from ClamAV version 0.90.3 to ClamAV version 0.91. This is the anti-virus scanner used on our incoming mail server.
This was backed out due to performance issues with the new version.

9 July 2007 — Unscheduled Downtime

The switch stack in 2149A stopped communicating with other switch at about 16:30. It was rebooted and new firmware loaded about 18:00.

8 July 2007 — Unscheduled Downtime

The switch stack in 3133A stopped communicating with other switch at about 02:30. It was rebooted and new firmware loaded about 15:00.

25 June 2007 — Software Update

The default version of Thunderbird (/p/thunderbird) on the Solaris systems will be updated from Thunderbird version 2.0.0.0 to Thunderbird version 2.0.0.4.

19 June 2007 — Unscheduled Downtime

An air conditioning failure in LWSN 2149A has necessitated that the following computers be turned off: albattani, alkhwarizmi, alkindi, place3, interbase8, khayyam, korra, mercury, saturn, titan, and uranus. We do not yet have an estimated time to repair.
HVAC was restored and machines turned back on at about 11:22.

4 June 2007 — Software Update

The default version of matlab (/p/matlab) on the Solaris SPARC and Linux systems will be updated from Matlab 7.3 (2006b) to Matlab 7.4 (2007a). This version is know to correct at least one memory problem users had with 7.3 on Linux.

4 June 2007 — Software Update

The default versions of Firefox (/p/firefox) will be updated from Firefox 2.0.0.3 to Firefox 2.0.0.4. There should be no user visible changes.

4 June 2007 - 29 June 2007 — Software Update

The Linux systems in CS instructional labs will be upgraded to

Linux kernel 2.6.21
GNU libc 2.5 with the Native Posix Thread Library
GNU C/C++ compilers 4.1.1. and 3.4.6
Sun Java SE 6 and J2SE 5 JDKs
Mozilla Firefox 2.0.0.4
Mozilla Thunderbird 2.0.0.0
GNOME 2.16.2
KDE 3.5.5
teTeX 3.0
StarOffice 8.0 update 6

31 May 2007 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris systems was updated from ClamAV version 0.90.2 to ClamAV version 0.90.3. This is the anti-virus scanner used on our incoming mail server.

24 May 2007 - 25 May 2007 — Scheduled Downtime

The servers Geezy, Aardvark, Cthulhu, Davros, Diablo, Dragon, Duo1, Duo2, Duo3, Famine, Fog, Fox, Godzilla, Gollum, Morbius, Nocona1, Nocona2, Nocona3, Nocona4, Pestilence, Rabbit, Reptilicus, Sloth, War, Wrath and Zardoz will be down while the data racks are replaced in LWSN 3133A. The new racks will include UPSes.

21 May 2007 - 22 May 2007 — Scheduled Downtime

The servers Albattani, Alkhwarizmi, Alkindi, Interbase8, Khayyam, Korra, Mercury, Place3, Saturn, Titan and Uranus will be down while the data racks are replaced in LWSN 2149A. The new racks will include UPSes.
This was completed on May 21 and all machines were back up by 17:00.

21 May 2007 — Software Update

The Samba server on Solaris machines was updated from 3.0.24 to 3.0.25. There should be no user visible changes.

17 May 2007 — Unscheduled Downtime

The server bors was rebooted at 07:15 to install a network driver patch to correct a problem with port aggregation. It was back up by 07:17.

15 May 2007 — Scheduled Downtime

15 May 2007 — Software Update

14 May 2007 — Software Update

The default versions of Firefox and Thunderbird on Solaris systems will be updated to Firefox 2.0 (2.0.0.3) and Thunderbird 2.0 (2.0.0.0) on Monday, May 14.
The latest versions of Firefox 1.5 and Thunderbird 1.5 will still be available in /p/firefox-1.5 (1.5.0.11) and /p/thunderbird-1.5 (1.5.0.10).

9 May 2007 — Scheduled Downtime

On May 9, Force10 will be here to assist in completing the network switch upgrades that were not completed in March (see March 13 upgrades).

Portions of the network in Lawson will have short (1-2 hour) outages during the day.

These outages are necessary so that we can upgrade the network switches in the building. The new switches support power-over-ethernet (PoE) and were part of our original purchase agreement with Force10, but were not available until March.

The main networking closets on each floor will be upgraded sequencially starting with the basement and ending with the third floor. All office connections on a floor will be out for approximately one hour during the closet upgrade for that floor.

The upgrade work will not affect HAAS network connections (wired or wireless). It will not affect PAL wireless in Lawson.

Please contact us as soon as possible if this schedule interferes with a planned presentation or deadline so we can make the necessary adjustments.

28 April 2007 - 29 April 2007 — Unscheduled Downtime

The CS network began experiencing instability in routing around 10:15 Saturday evening. Sometime early in the morning it became unreachable from outside.
We are still investigating the situation, but many machines are back on-line. Machines in research labs on LWSN second floor are still unreachable (13:30).
Everything should be back on-line at this time. Please report problems you experience.

18 April 2007 — Unscheduled Downtime

User processes exhausted available virtual memory on Lore. It was rebooted at 07:58 to clear the problem. Lore was back up by 08:04.

16 April 2007 — Unscheduled Downtime

A disk failed in the server for www.cs.purdue.edu (Lucan). It was down from 08:05 until about 08:24 while the disk was removed.

Filesystem corruption apparently introduced by the disk problem in the morning caused Lucan to crash about 11:00. The root filesystem was rebuilt and the system back up by about 12:16

14 April 2007 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris systems was updated from ClamAV version 0.90.1 to ClamAV version 0.90.2. This is the anti-virus scanner used on our incoming mail server.

12 April 2007 — Unscheduled Downtime

At 14:01 the LWSN and HAAS buildings (along with others on campus) lost power. It was out until about 14:04. Servers in the LWSN data center remained up, but desktop and research lab machines were down.

8 April 2007 — Unscheduled Downtime

The NFS server fox became unresponsive some time during the day. It was rebooted about 18:00 and is back online.

8 April 2007 — Unscheduled Downtime

The server for www.cs.purdue.edu (Lucan) became unresponsive early in the morning. It was rebooted about 18:00 and is back online.

2 April 2007 - 4 April 2007 — Scheduled Downtime

ITaP is in the process of switching to the production PAL wireless network. They expect to be completed by Wednesday.

22 March 2007 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris systems was updated from ClamAV version 0.90 to ClamAV version 0.90.1. This is the anti-virus scanner used on our incoming mail server.

21 March 2007 — Software Update

The default version of SpamAssassin was updated from version 3.1.7 to version 3.1.8.

14 March 2007 — Scheduled Downtime

Network Upgrades (see above)
Possible cleanup from Monday and Tuesday upgrades

There will be no additional network upgrade activity today.

13 March 2007 — Scheduled Downtime

Network Upgrades (see above)
Morning

LWSN basement
LWSN first floor
LWSN second floor (excluding 2149, 2161)
LWSN third floor (excluding 3133, 3151)

It was not possible to upgrade the network switches in the main floor wiring closets due to a technical problem with the new switches. Force10 is working on correcting this problem, but the upgrade will be delayed until the end of the semester.
Afternoon

LWSN 2149
LWSN 2161
LWSN 3133
LWSN 3151

Upgrades completed as expected.

13 March 2007 — Software Update

The Samba server on Solaris machines will be updated from 3.0.23d to 3.0.24. There should be no user visible changes.

13 March 2007 — Software Update

The IP address entry for cs.purdue.edu has been removed. This was historically necessary, but no longer valid. It tended to cause confusion and sometimes produced harmful results. For remote access to services, you should specify the full machine name (machine.cs.purdue.edu).

This change has no impact on departmental email addresses -- they remain address@cs.purdue.edu

13 March 2007 — Software Update

The default versions of Firefox and Thunderbird on Solaris systems were updated on Tuesday, March 13.

Product	Old	New
Firefox	1.5.0.8	1.5.0.10
Thunderbird	1.5.0.8	1.5.0.10

There should be no user-visible changes.

12 March 2007 — Scheduled Downtime

Network Upgrades (see above)

LWSN B131
LWSN B146
LWSN B148
LWSN B160

Upgrades completed as expected.

12 March 2007 - 14 March 2007 — Scheduled Downtime

The switch upgrades should be completed. If you are experiencing network problems, please report them.

Portions of the network in Lawson will have short (1-2 hour) outages during spring break next week. We expect most of the outages to occur on Monday and Tuesday, with some possible cleanup work on Wednesday.

The upgrades on Monday will be in the instructional labs in the basement. This should have minimal (if any) impact on faculty and staff connections.

On Tuesday morning the main networking closets on each floor will be upgraded sequencially starting with the basement and ending with the third floor. All office connections on a floor will be out for approximately one hour during the closet upgrade for that floor.

If all goes well, the research labs (2149, 2161, 3133, 3151) will be upgraded on Tuesday afternoon. Wednesday will be reserved for any areas not completed on Tuesday and any other necessary cleanup.

The upgrade work will not affect HAAS network connections (wired or wireless). It will not affect PAL wireless in Lawson.

Please contact us as soon as possible if this schedule interferes with a planned presentation or deadline so we can make the necessary adjustments.

4 March 2007 — Unscheduled Downtime

The server for www.cs.purdue.edu (Lucan) became unresponsive about 16:45. It was rebooted about 17:20 and is back online.

1 March 2007 — Unscheduled Downtime

The auto-mounter process on Lore became unresponsive about 17:30, preventing users from logging in, but it continued to provide NFS service. About 19:30 the situation was investigated. It was not possible to restart the auto-mounter process so it was forcibly rebooted about 20:30. Lore was back up about 20:35.

15 February 2007 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris systems was updated from ClamAV version 0.88.7 to ClamAV version 0.90. This is the anti-virus scanner used on our incoming mail server.

13 February 2007 — Software Update

The Samba server on Solaris machines will be updated from 3.0.21c to 3.0.23d. There should be no user visible changes.

13 February 2007 — Software Update

The UW IMAP and POP servers on Solaris machines will be updated from 2004g to 2006e. There should be no user visible changes.

31 January 2007 — Unscheduled Downtime

At about 9:50 the LWSN and HAAS buildings (along with others on campus) lost power. It was out until about 10:05. Servers in the LWSN data center remained up, but desktop and research lab machines were down.

31 January 2007 — Unscheduled Downtime

At about 13:30 the LWSN building HVAC was shut off to prevent further temperature drop. The central steam plant is currently offline (steam is needed to heat outside air). As a result the general temperature in the building should stabilize, but some rooms with lots of computer equipment may become warmer than expected.
It is anticipated that the steam generation will be back online in a few hours.

17 January 2007 — Unscheduled Downtime

At about 10:30 contractors working in HAAS 277 cut live network cables feeding the south part of the second floor. Network connectivity has been restored to HAAS 257 (except the printer). Other repairs or workarounds are in progress.
HAAS 254 and HAAS 256 were apparently not affected.
HAAS 264 is without connections.
HAAS 274 has partial loss of connections.

8 January 2007 — Software Update

The instructional lab machines in LWSN B131, B148 and HAAS 257 were moved from the xinu NIS domain to the ugrad NIS domain. This means anyone with an undergrad UNIX account (i.e. lore.cs.purdue.edu) can use the lab machines when not scheduled for a class. It also means anyone with a UNIX/Linux instructional lab account can use any of the labs (HAAS G040, HAAS 257, LWSN B131, LWSN B146 or LWSN B148).

31 December 2006 — Unscheduled Downtime

At about 16:49 the u98 filesystem experienced a write error which caused the filesystem to go to an error state. It was taken down for repairs at about 20:15. No estimated time of repair.
The filesystem is back on-line, but some directories have 0 permissions. These will need to be corrected on Tuesday.
The disk later failed and is offline. The disk is for both /u/u92 and /u/u98 -- both filesystem are currently unavailable.
The disk was replaced and the filesystems restored to the state of Saturday night's backup. Users were notified directly.

29 December 2006 — Scheduled Downtime

This has been cancelled. We received updated information from the electrical inspector that clarified what circuits will be tested, and the lab machine rooms are not affected.

At 9:55AM on Friday, December 29 the following machines will be shut down in preparation for the monthly generator test at 10AM. These are machines that are on generator power, but have no UPS.

Albattani
Alkhwarizmi
Alkindi
Interbase8
Khayyam
Korra
Mercury
Place3
Saturn
Titan
Uranus
Duo1
Duo2
Duo3

29 December 2006 — Scheduled Downtime

On Friday, December 29 we moved the following Linux servers from the HAAS machine room to LWSN

Nocona1
Nocona2
Nocona3
Nocona4

28 December 2006 — Scheduled Downtime

On Thursday, December 28 we will continue moving the UNIX servers from the HAAS machine room to the LWSN data center. Individual servers should only be down for about an hour, but interdependencies of servers may make the effective downtime longer. Please allow for disruptions all day.
On Thursday, December 28 we will be moving

Newman (outgoing mail, majordomo, /u/u26)
Mailslot (incoming mail)
Lucan (web server, /p/www, /p/ftp, /p/p35 (java), /p/p37)
Planetlab[12] (PlanetLab)
Xinuserver (NIS for xinu domain, /u/u3, /u/u9, /u/u5[67]
Cybil (Oracle, /u/u29)
Cassandra (Oracle)
Ector (NNTP news server, /u/u4, /u/u1[23], /u/u24, /u/u50)

28 December 2006 — Scheduled Downtime

Between 5AM and 6AM on Thursday, December 28 the fileserver Bors will be upgraded to a new server. As a result all systems that have active mounts of NFS filesystems from Bors may need to be rebooted. Most Solaris systems will be rebooted as a result of the OS patch updates between 6AM and 8AM

28 December 2006 — Software Update

The default versions of Firefox and Thunderbird on Solaris systems will be updated on Thursday morning, December 28.

Product	Old	New
Firefox	1.5.0.7	1.5.0.8
Thunderbird	1.5.0.7	1.5.0.8

There should be no user-visible changes.

28 December 2006 — Software Update

Solaris 8 and Solaris 10 systems will be updated to the current patch level. They will be rebooted between 6:00 AM and 8:00 AM on Thursday, December 28. Individual machines should only take about 5 minutes to reboot some time during the two hour window, but because of server dependencies the effective downtime may be longer.

28 December 2006 — Software Update

The default version of Matlab was updated from Matlab 6.5 to Matlab 7.3 (R2006b).

27 December 2006 — Scheduled Downtime

On Wednesday, December 27 we will continue moving the UNIX servers from the HAAS machine room to the LWSN data center. Individual servers should only be down for about an hour, but interdependencies of servers may make the effective downtime longer. Please allow for disruptions all day.
On Wednesday, December 27 we will be moving

Pendragon (DNS)
Oz
Beethoven (/u/u36)
Brahms (NIS for pacs domain, /u/u16, /u/u31, /u/u40, /u/u53)

21 December 2006 — Scheduled Downtime

On Thursday, December 21 we will begin moving the UNIX servers from the HAAS machine room to the LWSN data center, and continue through next week. Individual servers should only be down for about an hour, but interdependencies of servers may make the effective downtime longer. Please allow for disruptions all day.
On Thursday, December 21 we will be moving

Data (DHCP, some printers, NIS for camelot domain)
Eros (NIS for cer domain, /u/u21, /u/u27, /u/u46)
Balan (NIS for cypress domain, /u/u8, /u/u14, /u/u30)
Gwen (/u/u5)
Hephaestus
Dodona (CS Portals, Science Application site)
Arthur (/u/u1, /u/u2, /u/u22, /u/u111, /p/p2)
Lore (NIS for ugrad domain, /u/u9[1-8])
Pano4p
Ulphius (CGI server)

20 December 2006 — Scheduled Downtime

On Wednesday we will be moving the Windows servers from the HAAS machine room to the LWSN data center. Individual servers should only be down for about an hour, but interdependencies of servers may make the effective downtime longer. Please allow for disruptions all day.
On Wednesday, December 20 we will be moving

Darkstar
Exchange
Garcia
Jackstraw
Nemo
Printers
PrivatePC
Tiny
Trapper
Vermouth

11 December 2006 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris systems was updated from ClamAV version 0.88.6 to ClamAV version 0.88.7. This is the anti-virus scanner used on our incoming mail server.

7 December 2006 — Unscheduled Downtime

At about 03:00 the incoming mail server starting slowing down because of an excessive load of incoming connections. The servers were reset about 08:15 to restore the normal flow of mail.

21 November 2006 — Software Update

The default version of OpenSSL was updated from version 0.9.7e to version 0.9.8d.

21 November 2006 — Software Update

The default version of OpenSSH (/p/openssh) on Solaris systems has been updated to OpenSSH 4.5p1.
The sshd server on Solaris 8 systems was upgraded to OpenSSH 4.5p1

14 November 2006 — Unscheduled Downtime

At about 14:30 the incoming mail server starting slowing down because of an excessive load of incoming connections. About 14:50 it stopped responding. It was rebooted and accepting connectons again by about 15:10.

6 November 2006 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris systems was updated from ClamAV version 0.88.5 to ClamAV version 0.88.6. This is the anti-virus scanner used on our incoming mail server.

30 October 2006 — Software Update

The default version of SpamAssassin was updated from version 3.1.2 to version 3.1.7.

23 October 2006 — Scheduled Downtime

On Monday morning from 06:00-08:00 Lisa will be moved from MATH 419 to LWSN datacenter. During that time the server will be unavailable. This also means NIS service for the gradmath domain will be unavailable and the /u/u28 filesystem will be unavailable.
The move will also require an IP address change for the server. Because of this it will require having all active mounts of /u/u28 cleared before the move. If your home is on /u/u28, you need to be logged out of CS UNIX/Linux machines before 6AM Monday.
Other machines in the gradmath domain will need to rebind to the NIS server after the move. This may, in some cases, require a system reboot. If the domainname UNIX command reports "gradmath" for your workstation, please make sure all work is saved before 6AM Monday in case the system needs to be rebooted.

This is took longer than expected because of infrastructure problems. It was completed about 8:30.

19 October 2006 — Unscheduled Downtime

Due to a faulty optics module on the main network switch for LWSN second floor, most staff and faculty offices experienced network instability until about 10AM. The defective module has been located and replaced.
Other users may have seen some temporary disruptions while the main switch was rebooted.

19 October 2006 — Scheduled Downtime

This is part 2 of the machine room move from MATH 419 to LWSN 2149A. The following machines are scheduled to be moved at the times indicated. Times are approximate and the moves may not take the full window of time. The move will require a change of IP address so DNS caches may need to be flushed to access the system after the move.

8AM-10AM

Interbase8, Alkindi and Albattani. These are are the fileservers for /u/u11, /u/u19, /u/u32 and /u/u35.

10AM-NOON

Place3, Uranus.

18 October 2006 — Scheduled Downtime

This is part 1 of the machine room move from MATH 419 to LWSN 2149A. The following machines are scheduled to be moved at the times indicated. Times are approximate and the moves may not take the full window of time. The move will require a change of IP address so DNS caches may need to be flushed to access the system after the move.

7AM-9AM

Khayyam and Korra. These are the primary Windows servers for the ICDS group. During this time this Windows home directories will be unavailable.

8AM-10AM

Alkhwarizmi and Saturn. Alkhwarizmi is the server for the 4TB storage array, the Ecoli web server and the filesystems /u/u15, /u/u18 and /u/u20. Saturn is the server for /u/saturn.

16 October 2006 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris and IRIX systems was updated from ClamAV version 0.88.4 to ClamAV version 0.88.5. This is the anti-virus scanner used on our incoming mail server.

10 October 2006 — Scheduled Downtime

See next entry.

10 October 2006 — Scheduled Downtime

The university construction inspectors will be testing the power generator system in LWSN on Tuesday morning between 10AM and 11AM. The test should only affect power that is on the emergency generator. It will not affect standard wall outlets in offices. However power will go down in the wiring closets. Most of the closets have working UPS units, but there are a couple that do not. There may be a few minutes of network distruption as a result.

9 October 2006 — Software Update

The default versions of Firefox and Thunderbird on Solaris systems will be updated on Monday morning, October.

Product	Old	New
Firefox	1.5.0.5	1.5.0.7
Thunderbird	1.5.0.5	1.5.0.7

There should be no user-visible changes.

6 October 2006 — Scheduled Downtime

The server Alhagib will be down this afternoon for about an hour some time after 1PM. The machine will be moving from MATH to HAAS and will have to be moved to a different IP address in the process. The machine as well as the filesystem /u/alhagib will be unavailable during the move.

This was rescheduled for Monday, October 9.

This was rescheduled for Tuesday, October 10.

3 October 2006 — Software Update

Modified the project (companion to turnin) command to give better error messages and to remove packed projects with the remove (-r) option. Prior to the latter change, if you packed (-p) a project, then removed (-r) it, the pack (.tar.Z) file was not removed and this would cause problems later if you tried to add the project back.

27 September 2006 — Software Update

The default version of PHP (/p/php) on the Solaris systems was updated to PHP 5.1.6. CGI packages that are designed to work with old versions of PHP may need to be updated.

26 September 2006 — Unscheduled Downtime

The server Vermouth went down about 14:00.
The server was back on-line about 15:30.

26 September 2006 — Software Update

The default version of ApachePHP (/p/apache-php) on the Solaris systems was updated to ApachePHP 2.2.23. There should be no user-visible changes.

21 September 2006 - 22 September 2006 — Unscheduled Downtime

Starting around 5PM on Thursday, CS networks lost connectivity with many outside networks (including google, CNN, etc). Other outside networks are still reachable. We are contacting ITaP about this issue. There is no estimate of when it will be resolved.
At or before 10AM on Friday, ITaP Telecom has opened a ticket with the Gigapop (Purdue's connection to the outside world) on this issue.
The Gigapop was called back around 4:30PM -- they still had the ticket in their queue but had not made any progress on it.
About 5:30PM the Gigapop stopped advertising the CS network route to Time Warner which allows us to get to most outside sites. They (Gigapop/Time Warner) still need to figure out why this was causing problems.

13 September 2006 — Software Update

The default version of Apache (/p/apache) on the Solaris systems was updated to Apache 1.3.37. There should be no user-visible changes.

12 September 2006 — Unscheduled Downtime

The server Cassandra (csdb Oracle server) experienced disk fibre loop problems about 00:18 and became unresponsive. It was power-cycled about 08:00 and back on-line at about 08:06.
A new disk is on order.

2 September 2006 — Unscheduled Downtime

The server Cassandra (csdb Oracle server) experienced disk fibre loop problems about 03:10 and became unresponsive. It was power-cycled about 09:00 and back on-line at about 09:36.

31 August 2006 — Scheduled Downtime

The CS equipment in PHYS 8 and PHYS 10 labs will be removed from service. This includes the servers Remus and Romulus.

30 August 2006 — Unscheduled Downtime

At about 13:37 the Force 10 switch started exhibiting stability problems. They cleared up after a few minutes, then reoccurred about 13:49. The router was rebooted about 14:40 and was stable after that.

30 August 2006 — Scheduled Downtime

The CS labs in LWSN B131 and LWSN B146 will be down from 07:15 until about 09:00 on Wednesday morning so the furniture contractors can modify the power wiring configuration.

25 August 2006 — Unscheduled Downtime

At 18:55 the second SCSI channel on Zardoz appears to have failed, making all the /u/u112 - /u/u120 filessystems unavailable. There is no estimated time of repair.

24 August 2006 — Unscheduled Downtime

The CS Portals site (https://portals.cs.purdue.edu/) is down.
The site is back up as of about 11:30.

23 August 2006 — Unscheduled Downtime

From 10:00PM to 11:00PM ITaP will be performing maintenance equipment maintenance on core switches that will affect network connectivity between buildings. See http://www.itap.purdue.edu/newsroom/news.cfm?newsId=566

21 August 2006 — Scheduled Downtime

The public printers Degas and Transparency were moved from HAAS 212 to LWSN 1154. The printer Muir was moved to LWSN 2142 north reception area.
The machines PublicPC and PublicLinux were moved from HAAS 212 to LWSN 1154.

10 August 2006 — Software Update

The default versions of Firefox and Thunderbird on Solaris systems will be updated on Thursday morning, August 10.

Product	Old	New
Firefox	1.5.0.4	1.5.0.5
Thunderbird	1.5.0.4	1.5.0.5

There should be no user-visible changes.

10 August 2006 — Software Update

Solaris 8 and Solaris 10 systems will be updated to the current patch level. They will be rebooted between 6:00 AM and 8:00 AM on Thursday, August 10. Individual machines should only take about 5 minutes to reboot some time during the two hour window, but because of server dependencies the effective downtime may be longer.

9 August 2006 — Scheduled Downtime

Between 07:30 and 09:30 we will be switching our campus network connection from the ITaP router in HAAS (old CS building) to the router in the LWSN data center. During this time connections within the CS building and connections to the outside world will be unstable. We hope the actual downtime will be less than two hours, but don't make any plans based on this.
The first (major) phase of the network cutover was completed about 08:00 with routing inside HAAS and LWSN working. Routing to the rest of campus was up about 08:40.
The second phase will involve relocating a few connections and will not produce any significant network disruptions.

8 August 2006 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris and IRIX systems was updated from ClamAV version 0.88.3 to ClamAV version 0.88.4. This is the anti-virus scanner used on our incoming mail server.

7 August 2006 — Scheduled Downtime

CS Dialup modems will be turned off permanently. Dialup users should use ITaP modems. For more information, visit the ResNet page and click on "Dial-up General Information"

2 August 2006 — Unscheduled Downtime

The server Cassandra (csdb Oracle server) experienced disk fibre loop problems about 02:25 and became unresponsive. It was power-cycled about 08:00 and back on-line at about 08:26.

2 August 2006 — Scheduled Downtime

Grad TA machines in MATH B3, B5, B9, B11, B13, B15, B45, B47, G148 and G150 were removed from service in preprartion to moving to LWSN. They will remain in storage until they can be installed in LWSN.

2 August 2006 — Scheduled Downtime

Grad TA machines in PHYS 11, 11A, 12, 12A, 12B were removed from service in preprartion to moving to LWSN. They will remain in storage until they can be installed in LWSN.

21 July 2006 — Software Update

The default version of Ghostscript utilities (/p/ghostscript) on Solaris systems will be updated from version 8.14 to version 8.54.

20 July 2006 — Unscheduled Downtime

The server Balan shut down at 03:47 due to a hardware watchdog reset. It was rebooted at 06:09.

19 July 2006 — Unscheduled Downtime

Power for Sea4-Sea10 and the network switches for the entire cluster went off about 23:36 (circuit breaker tripped). It was turned back on about 07:50.

3 July 2006 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris and IRIX systems was updated from ClamAV version 0.88.2 to ClamAV version 0.88.3. This is the anti-virus scanner used on our incoming mail server.

28 June 2006 — Unscheduled Downtime

A disk on Cassandra, the fileserver for the csdb oracle database failed. It is down at 20:25 for repairs. It was back up by about 21:25.

24 June 2006 — Scheduled Downtime

Alkindi (server for /u/u35) will be unavailable from 00:01 until 06:00 to allow a researcher to run some timing test in single-user mode.

16 June 2006 — Scheduled Downtime

Albattani (server for /u/u32) will be down from 07:00 until about 09:00 to replace a failing system disk.

6 June 2006 — Software Update

The default version of SpamAssassin was updated from version 3.1.1 to version 3.1.2.

28 May 2006 — Unscheduled Downtime

The fileserver Bors (fileserver for many package directories) was not responding to network requests from 10:30 until about 14:00. It was rebooted.

18 May 2006 — Software Update

Solaris 8 and Solaris 10 systems will be updated to the current patch level. They will be rebooted between 6:00 AM and 8:00 AM on Thursday, March 16. Individual machines should only take about 5 minutes to reboot some time during the two hour window, but because of server dependencies the effective downtime may be longer.

16 May 2006 — Software Update

The default version of Thunderbird (/p/thunderbird) on the Solaris systems will be updated from Thunderbird version 1.5 to Thunderbird version 1.5.0.2.

16 May 2006 — Software Update

The default version of Firefox (/p/firefox) on the Solaris systems will be updated from Firefox version 1.5.0.1 to Firefox version 1.5.0.3.

1 May 2006 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris and IRIX systems was updated from ClamAV version 0.88.1 to ClamAV version 0.88.2. This is the anti-virus scanner used on our incoming mail server.

24 April 2006 — Unscheduled Downtime

ITaP is experiencing network routing instability. This will cause problems communicating with many sites outside Purdue. Note, not all outsite sites are unreachable, and it is not easy to predict which ones are.

ITaP reset the TEL M10 router and resolved the issue at about 10:44. See ITaP's detail posting for an After Action Report (After Action Report may not be available for a day or two).

7 April 2006 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris and IRIX systems was updated from ClamAV version 0.88 to ClamAV version 0.88.1. This is the anti-virus scanner used on our incoming mail server.

24 March 2006 — Software Update

Samba was upgraded from Samba 3.0.10 to Samba 3.0.21c. The samba servers will be restarted within the next couple days.

22 March 2006 — Software Update

The default version of SpamAssassin was updated from version 3.1.0 to version 3.1.1.

22 March 2006 — Software Update

Sendmail was updated from version 8.12.9 to version 8.13.6 because of a security vulnerability in pre-8.13.6 versions.

16 March 2006 — Software Update

Samba was upgraded from Samba 3.0.10 to Samba 3.0.21b. The samba servers were restarted with the Solaris update reboots (see below).
The upgrade was backed on out Sunday, March 19 when the samba servers started rejecting connections. It appears this was due to a change in the configuration defaults between 3.0.10 and 3.0.21b.

12 March 2006 — Unscheduled Downtime

Main power to the CS and MATH buildings went off at about 13:36 and came back on about 16:00. No cause is known at this time.

12 March 2006 — Scheduled Downtime

The main electrical power to Recitation will be turned off from 12noon until about 2PM on Sunday, March 12. During that time, the CS machines in REC108 will be shut down.

10 March 2006 — Scheduled Downtime

The main electrical power to Recitation will be turned off from 6PM until about 8PM on Friday, March 10. During that time, the CS machines in REC108 will be shut down.

24 February 2006 — Software Update

The CGI wrapper (cgiwrap) on the CGI server (www-cgi.cs.purdue.edu) was upgraded from cgiwrap-3.9 to cgiwrap-3.10. There should be no user-visible changes. The primary purpose of the version update was to provide a security patch.

21 February 2006 — Unscheduled Downtime

The server Cybil lost track of the disk for /u/u29 about 3AM. At 8:10 the machine was shutdown and power-cycled. Everything was back on-line by at about 8:50.
The disk went off-line again at about 12:26. The filesystem will be unavailable until the filesystem can be moved to another disk. Estimated completion time is about 3PM
The filesystem move was completed by about 14:12. No user data was lost.

14 February 2006 — Software Update

The default version of Thunderbird (/p/thunderbird) on the Solaris systems will be updated from Thunderbird version 1.0.7 to Thunderbird version 1.5.

14 February 2006 — Software Update

The default version of Firefox (/p/firefox) on the Solaris systems will be updated from Firefox version 1.5 to Firefox version 1.5.0.1.

7 February 2006 — Unscheduled Downtime

At about 15:49 a fuse blew in the main wiring closet causing network disruptions within the CS building. Several devices were removed from the circuit and the fuse replaced. All network devices were rebooted and stable by about 16:00.

7 February 2006 — Unscheduled Downtime

At about 17:20 a fuse blew in the main wiring closet causing network disruptions within the CS building. Several more devices were removed from the circuit and the fuse replaced. All network devices were rebooted and stable by about 18:30.

27 January 2006 — Scheduled Downtime

Network connectivity between the Computer Science building and the rest of campus and the Internet will be unreliable between 7:00AM and 7:30AM on Friday, January 27 while ITaP network engineers transition the building's network feed to new fiber.

24 January 2006 — Unscheduled Downtime

At about 07:18 the network connection from CS to ITaP went down. This impacts all connections to the rest of campus and the outside world. We have contacted ITaP. The problem appears to be with the fiber link to the CS building. No estimated time of repair.
The network connection to the CS building was restored about 08:47

23 January 2006 — Unscheduled Downtime

At about 14:25 the network connection from CS to ITaP went down. This impacts all connections to the rest of campus and the outside world. We have contacted ITaP, they are actively working on it. The problem appears to be with the fiber link to the CS building. No estimated time of repair.
The network connection to the CS building was restored about 17:20

13 January 2006 — Unscheduled Downtime

At about 17:03 the network connection from CS to ITaP went down. This impacts all connections to the rest of campus and the outside world. We have contacted ITaP customer support, but we are unable to contact the ITaP NOC. No estimated time of repair.
The network fiber to the CS building was damaged, but was replaced and the network connection was back on-line about 00:30.

11 January 2006 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris and IRIX systems was updated from ClamAV version 0.87.1 to ClamAV version 0.88. This is the anti-virus scanner used on our incoming mail server.

5 January 2006 — Scheduled Downtime

On Friday, January 5 we will be moving the following servers from the HAAS machine room to LWSN. They will be shut down at 08:00 and should be back up in the early afternoon.

Chappell
Cthulhu
Davros
Death
Diablo
Dolphin
Dragon
Famine
Godzilla
Gollum
Jaguar
Morbius
Pestilence
Rabbit
Reptilicus
Sloth
Thommo
War
Wrath
Xoanon
Zardoz

4 January 2006 — Scheduled Downtime

On Thursday, January 4 we will be moving the following servers from the HAAS machine room to LWSN

H1 - H6

3 January 2006 — Scheduled Downtime

On Wednesday, January 3 we will be moving the following servers from the HAAS machine room to LWSN

Lake
Sea1 - Sea20

3 January 2006 — Scheduled Downtime

CS printers will be moved from a public subnet to an internal-only subnet. This is to prevent potential external abuse. During the move, printers will be unavailable for about an hour during the morning.

2 January 2006 — Scheduled Downtime

On Tuesday, January 2 we will be moving the following servers from the HAAS machine room to LWSN
Morning

Antz1 - Antz8
Shamu1 - Shamu6

Afternoon

Lake
Sea1 - Sea20

The morning moves took longer than anticipated, so the afternoon moves have been postponed until tomorrow.

1 January 2006 — Unscheduled Downtime

At about 02:00 Bors' 128.10.2.0/24 subnet interface ran out of buffer space and stopped responding to network requests on that interface. This made it unavailable to many systems. It was rebooted by 02:30.

1 January 2006 - 31 July 2006 — Scheduled Downtime

The network infrastructure is being upgraded. This is being done in a way that minimizes general network disruption, but may cause short disruptions for individual machines. If your network connection is out for 1-2 minutes, please be patient and it should return. If it is out for much more than this (5 minutes or more), you should report the problem to hardware@cs.purdue.edu from another workstation.

29 December 2005 — Scheduled Downtime

Solaris 8 and Solaris 10 systems will be updated to the current patch level. They will be rebooted between 6:00 AM and 8:00 AM on Thursday, December 29. Individual machines should only take about 5 minutes to reboot some time during the two hour window, but because of server dependencies the effective downtime may be longer.

29 December 2005 — Software Update

22 December 2005 — Software Update

Replaced the local version of rdesktop (RDP client for UNIX) 1.2.0 with the CSW rdesktop package for version 1.4.1. /p/rdesktop is now just a link to /opt/csw, hence /p/rdesktop/bin/rdesktop still works.

21 December 2005 — Unscheduled Downtime

The server Cybil lost track of the disk for /u/u29 about midnight. At 7:53 the machine was shutdown and power-cycled. Everything came back on-line at about 8:30 without problems.

21 December 2005 — Scheduled Downtime

The /u/u15 and /u/u20 filesystems will be moved to an internal disk in the server (Alkhwarizmi). This will allow us to remove the external drive and slightly reduce the sources of heat in MATH 419. The moves will occur between 8:00 AM and 9:00 AM.

21 December 2005 — Software Update

The default version of Firefox (/p/firefox) on the Solaris systems will be updated from Firefox version 1.0.7 to Firefox version 1.5

19 December 2005 — Scheduled Downtime

The REC108 lab will be down for hardware upgrade and OS conversion. The lab will be converted from Solaris 10 to Linux. It will probably be down all day.

19 December 2005 — Scheduled Downtime

DHCP server on the 128.10.26.0/24 subnet (CS machines in PHYS, REC) will be down during the REC108 lab conversion. Downtime for the DHCP service should only be a couple hours some time during the day.

19 December 2005 — Software Update

Removed old entries for ITaP printers from our printcap file. These are old entries. If they are still being used, users should request their re-addition.

Removed printer queues are Caryhp1, Harrhp1, Hillhp1, Laebb280hp1, Laebb286hp1, Laebb291hp1, Mathg109chp, Mathg109chp-g, Mathg109hp1, Mcuthp1, Me244chp, Me244hp, Owenhp1, Shrvhp1, Tarkhp1, Wilyhp1, Yonghp1

19 December 2005 — Software Update

Installed the following software development tools in REC108, which have been provided through a grant from Intel®.

Intel^® C++ Compiler for Linux
Intel^® VTune^TM Performance Analyzer for Linux
Intel^® Math Kernel Library for Linux

4 November 2005 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris and IRIX systems was updated from ClamAV version 0.87 to ClamAV version 0.87.1. This is the anti-virus scanner used on our incoming mail server.

14 October 2005 — Unscheduled Downtime

The Oracle server for CS Portals and College of Science Applications sites will be down for a patch starting at about 11:30. This patch is an attempt to correct a data integrity issue. The sites should be back on-line mid-afternoon.

11 October 2005 — Software Update

The default version of Thunderbird (/p/thunderbird) on the Solaris systems will be updated from Thunderbird version 1.0.6 to Thunderbird version 1.0.7

10 October 2005 — Scheduled Downtime

The OS on the Oracle server Cassandra will updated on Monday morning, October 10 from Solaris 2.6 to Solaris 2.8. The upgrade will take place from 8AM until about 9AM. This should produce no user-visible changes.

The OS upgrade took considerably longer than expected because of hardware issues and interruptions. The system was back on-line by about 10:20.

After the OS upgrade, Oracle will be patched from the current version of 9.2.0.1 to 9.2.0.5. It should be completed by 5PM. This patch should correct some bugs, but otherwise produce no user-visible changes.

During the OS upgrade (8-9) the /p/mysql package will not be available.

During the OS upgrade and Oracle patch (8-5) the /p/oracle package will not be available, the csdb and www-jdbc Oracle servers will not be available, and the CS Web calendar will not be available.

10 October 2005 — Software Update

The OS upgrade took considerably longer than expected because of hardware issues and interruptions. The system was back on-line by about 10:20.

During the OS upgrade (8-9) the /p/mysql package will not be available.

During the OS upgrade and Oracle patch (8-5) the /p/oracle package will not be available, the csdb and www-jdbc Oracle servers will not be available, and the CS Web calendar will not be available.

8 October 2005 — Unscheduled Downtime

A power fluctuation at about 9:29 caused the power distribution boxes in the CS machine room to trip, turning off power. Power was restored and most servers back up by about 10:00.

4 October 2005 — Software Update

The default version of Mozilla (/p/mozilla) on the Solaris systems will be updated from Mozilla version 1.7.11 to Mozilla version 1.7.12

3 October 2005 — Software Update

The default version of SpamAssassin was updated from version 3.0.4 to version 3.1.0.

30 September 2005 — Software Update

The default version of Firefox (/p/firefox) on the Solaris systems will be updated from Firefox version 1.0.6 to Firefox version 1.0.7

26 September 2005 - 27 September 2005 — Unscheduled Downtime

Due to a configuration error, the /opt directory on Lore became unavailable about 4:30PM or 5PM on the 26th. The error was noticed and corrected on Tuesday morning at about 9AM.

As a result during this time, any OpenWindows applications or applications using the OpenWindows X libraries would not work. This included, but was not limited to, firefox, mozilla, and vim. Also, the Sun compiler suites were not available during this time.

21 September 2005 — Software Update

The firefox and mozilla startup scripts for Solaris were updated to the latest versions from Mozilla.org to work around a bug. Note, only the startup scripts were updated, not the actual firefox or mozilla distributions. This is a workaround for the bug URL shell command injection bug.

19 September 2005 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris and IRIX systems was updated from ClamAV version 0.86.2 to ClamAV version 0.87. This is the anti-virus scanner used on our incoming mail server.

16 September 2005 — Software Update

The default version of Mozilla on Solaris systems (/p/mozilla/mozilla) will be updated on Friday morning, September 16 from Mozilla version 1.7.10 to Mozilla version 1.7.11. There should be no user visible changes.

16 September 2005 — Software Update

The default version of Maple on Solaris SPARC systems (/p/maple/bin/maple, /p/maple/bin/xmaple) will be updated from Maple version 9.5 to Maple version 10 on Friday, September 16.
The first time Maple 10 starts, it will remind you that the license expires in 350 days or so (August 31, 2006). Just click OK and continue. This notice should only appear once.
Note, the version of Maple available for Solaris X86 remains Maple version 7, the latest available.

14 September 2005 — Software Update

Flash player (plugin) for Mozilla and Firefox on Solaris systems was updated to Flash 7, the latest version available for Solaris.

18 August 2005 — Unscheduled Downtime

The power breaker for a rack in the machine room overloaded and tripped at about 11:27. This caused some servers (Chappell, Cthulhu, Diablo, Elsinore, Godzilla, Hotknife, Jaguar, Reptilicus, Thommo, Zardoz) to lose power, as well as a network switch for the 128.211.1.0/24 subnet. This caused the NIS server (Balan) to be isolated as well.

Elsinore and Jaguar are still down pending power rerouting. Chappell was backup up by about 12:25. All other servers were back up by about 11:50.

17 August 2005 — Unscheduled Downtime

Due to my editting mistake, the auto-mounter daemon became stuck and several machines had to be rebooted to clear it up. Included are Arthur, Ector, Lore. The problem started about 23:15

11 August 2005 — Scheduled Downtime

Solaris 8 systems will be updated to the current patch level. They will be rebooted between 6:00 AM and 8:00 AM on Thursday, August 11. Individual machines should only take about 5 minutes to reboot some time during the two hour window, but because of server dependencies the effective downtime may be longer.

11 August 2005 — Software Update

On Thursday, August 11, the default version on Java on Solaris systems will be updated from java 1.2 to Java 1.5.
Java 1.5 on the Solaris systems will be updated from 1.5.0_01 to 1.5.0_04.
Old versions of Java will remain available as /p/java-1.1, /p/java1.2, /p/java-1.3 and /p/java-1.4.

11 August 2005 — Software Update

3 August 2005 — Unscheduled Downtime

Alkhwarizmi stopped responding to anything except pings at about 00:46. There was no log indications as to why. It was rebooted about 08:18.

1 August 2005 — Unscheduled Downtime

The disk for /u/u3 failed during monthly backups. The filesystem is currently unavailable (10:30). The disk will be replaced and files restored from backups.

The disk was replaced and the filesystem was restored without any user data loss. The disk was back online at 13:30.

25 July 2005 — Software Update

The default versions of Firefox, Mozilla and Thunderbird on Solaris systems will be updated on Monday morning, July 25.

	Old	New
Firefox	1.0.4	1.0.6
Mozilla	1.7.8	1.7.10
Thunderbird	1.0.2	1.0.6

These updates address several potential security vulnerabilities. There should be no user-visible changes.

25 July 2005 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris and IRIX systems was updated from ClamAV version 0.86.1 to ClamAV version 0.86.2. This is the anti-virus scanner used on our incoming mail server.

24 June 2005 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris and IRIX systems was updated from ClamAV version 0.85.1 to ClamAV version 0.86.1. This is the anti-virus scanner used on our incoming mail server.

16 June 2005 — Software Update

The default version of OpenSSH (/p/openssh) on Solaris and IRIX systems has been updated to OpenSSH 4.3p2.

16 June 2005 — Software Update

Sendmail 8.13.6 on Solaris and IRIX machines was patched to prevent a potential denial of service exploit with malformed MIME attachements.

12 June 2005 — Scheduled Downtime

Computer Science building power will be shut down at 12:00NOON on Sunday, June 12. The power will be down for 1-2 hours. During this time, all CS computer services will be shut down. You should save all work and log out of your machines before 11:30AM. You should not turn your machines off.

Math building power will be shut down at 2:00PM on Sunday, June 12 following the Computer Science building power outage. The power will be down for 1-2 hours. During this time, all CS computers in MATH will remain down.

NOTE: This should be the last of three power outages this summer, directly related to the construction of our new building.

12 June 2005 — Software Update

The default versions of Firefox, Mozilla and Thunderbird on Solaris systems will be updated on Monday morning, June 12.

Product	Old	New
Firefox	1.5.0.3	1.5.0.4
Mozilla	1.7.12	1.7.13
Thunderbird	1.5.0.2	1.5.0.4

These updates address several potential security vulnerabilities. There should be no user-visible changes.

12 June 2005 — Software Update

The sshd server on Solaris 8 systems was upgraded to OpenSSH 4.3p2

10 June 2005 — Scheduled Downtime

Computer Science building power will be shut down at 5:00PM on Friday afternoon, June 10. The power will be down for 1-2 hours. During this time, all CS computer services will be shut down. You should save all work and log out of your machines before 4:30PM. You should not turn your machines off.

The CS building will be on external generator power over the weekend until about noon on Sunday. Power may not be as reliable as normal.

NOTE: This is the second of three power outages that will happen this summer, directly related to the construction of our new building.

6 June 2005 — Software Update

The am-utils automounter daemon was updated on all Solaris and IRIX machines from am-utils version 6.0.9 to am-utils version 6.0.10. The new version appears to significantly reduce the instances of "stale file handle" problems with home directories when running cron jobs. Other than that, there should be no user visible differences.

6 June 2005 — Software Update

The default version of SpamAssassin was updated from version 3.0.3 to version 3.0.4.

2 June 2005 — Scheduled Downtime

Punch will be upgraded from Solaris 2.6 to Solaris 8 on Thursday morning, June 2. The upgrade will be done between 6AM and 8AM. During this time the following filesystems will be unavailable.

/u/punch - User home directories
/u/u59 - User home directories

Because Punch is the NIS server for the "park" domain, other Solaris and Linux machines in that domain may experience temporary problems accessing directory information.

1 June 2005 — Unscheduled Downtime

At about 02:15 one of the disk mirror sets on Bors (server for /p/p1, /p/p3, /p/p4, /p/p8 and /p/p9) went off-line. The machine was no longer serving files, but was responding to pings so automated monitoring did not catch it. When the drives were manually forced back on-line at about 07:15, the system appeared to function correctly. Bors was back up about 07:25.

31 May 2005 — Scheduled Downtime

In preparation for the OS upgrade on Punch, the user filesystem /u/punch needs to be reconfigured. This will take several hours to do the dump and restore. The filesystem will be unavailable from 8PM on Tuesday, May31 through 8AM on Wednesday, June 1.

27 May 2005 — Unscheduled Downtime

At about 16:25 Ector became unresponsive. This was probably related to attempts to trouble-shoot problems with the console line to the console server. At 16:45 the machine was rebooted. It was back up at about 16:58.

24 May 2005 — Scheduled Downtime

Building AC power will be shut down at 6:30PM for CS, MATH, and PSYC on Tuesday evening, May 24. The power will be down for 1-2 hours. During this time, all CS computer services will be shut down. All users should save all work and log out of your machines before 6PM. You should not turn your machines off.

UPDATE: This has been rescheduled for 7:30PM. Please save all your work and log out by 7PM.

NOTE: This is the first of three power outages that will happen this summer, directly related to the construction of our new building.

19 May 2005 — Scheduled Downtime

Eros will be upgraded from Solaris 2.6 to Solaris 8 on Thursday morning, May 19. The upgrade will be done between 7AM and 8AM. During this time the following filesystems will be unavailable.

/u/u21 - User home directories
/u/u27 - User home directories
/u/u46 - User home directories

Because Eros is the NIS server for the "cer" domain, other Solaris and Linux machines in that domain may experience temporary problems accessing directory information. The actual downtime for the NIS server should only be about 10 minutes.

18 May 2005 — Software Update

The default versions of Firefox and Mozilla will be updated on Wednesday morning, May 18.

	Old	New
Firefox	1.0.3	1.0.4
Mozilla	1.7.7	1.7.8

These updates address several potential security vulnerabilities. There should be no user-visible changes.

17 May 2005 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris and IRIX systems was updated from ClamAV version 0.85 to ClamAV version 0.85.1. This is the anti-virus scanner used on our incoming mail server.

13 May 2005 — Unscheduled Downtime

Our network connection from the CS building to the outside (campus, world, etc) went down about 7:30AM. ITaP is rearranging their machine room in MATH. This apparently resulted in our building being disconnected from the world. The maintenance is scheduled to be completed by 9:00AM, so our connection should be back by then.

Update: The connection was restored at about 13:05.

13 May 2005 — Scheduled Downtime

On Friday morning between 07:30 and 08:00, May 13 we will be replacing the network switch in MATH 419. This will result in the following machines being unavailable for at least a few minutes during the scheduled window.

albattani	alkarki	alkhwarizmi	alkindi
interbase8	jupiter	khayyam	korra
lisa	mars	mercury	neptune
place3	place4	pluto	uranus
venus

12 May 2005 — Scheduled Downtime

Solaris 8 systems will be updated to the current patch level. They will be rebooted between 6:00 AM and 8:00 AM on Thursday, May 20. Individual machines should only take about 5 minutes to reboot some time during the two hour window, but because of server dependencies the effective downtime may be longer.

12 May 2005 — Software Update

Solaris 8 systems will be updated to the current patch level. They will be rebooted between 6:00 AM and 8:00 AM on Thursday, May 12. Individual machines should only take about 5 minutes to reboot some time during the two hour window, but because of server dependencies the effective downtime may be longer.

12 May 2005 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris and IRIX systems was updated from ClamAV version 0.84 to ClamAV version 0.85. This is the anti-virus scanner used on our incoming mail server.

12 May 2005 — Software Update

The default version of SpamAssassin was updated from version 3.0.2 to version 3.0.3.

11 May 2005 — Scheduled Downtime

The ITaP license server that mediates our use of MATLAB will be unavailable from 6:30 am until 9:00 am on Wednesday, May 11.

During that time, you will not be able to run your campus-licensed installations of MATLAB, SIMULINK et al.

This downtime had been postponed for at least a week.

9 May 2005 — Unscheduled Downtime

There was a power outage in an ITaP closet around 08:24 today in PHYS. CS machines in PHYS are currently unreachable. No estimate on repair.

Update: Network connectivity was restored at about 10:16.

2 May 2005 — Unscheduled Downtime

There was a campus power outage around 13:27 today. Most machines were up by 14:10, but there were network problems with some machines that caused additional delays. Bors was back up about 14:47. Ulphius was back up around 16:38

There were several casulties of the power failure. Hupmann (server for u23) suffered hardware problems and is not in service yet.

Update: The IDPROM and CPU fan were replaced in Hupmann. It was returned to service on Thursday.

Albattani (server for u32) suffered a disk failure and is not in service.

Update: User data was moved to another server, the disk was replaced and the machine returned to service on Friday.

The power supplies on Jupiter and Mercury died and the machines are still down.

Update: These were repaired and returned to operation by Wednesday.

2 May 2005 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris and IRIX systems was updated from ClamAV version 0.83 to ClamAV version 0.84. This is the anti-virus scanner used on our incoming mail server.

22 April 2005 — Software Update

The default versions of Firefox and Mozilla will be updated on Friday morning, April 22.

	Old	New
Firefox	1.0.2	1.0.3
Mozilla	1.7.6	1.7.7

These updates address several potential security vulnerabilities. There should be no user-visible changes.

13 April 2005 — Software Update

A new version of the BIND DNS name server was installed on CS Solaris machines running name servers. It was upgraded from BIND 9.2.3rc4 to BIND 9.3.1. There should be no user-visible changes.

31 March 2005 — Software Update

The default versions of Firefox, Mozilla and Thunderbird will be updated on Thursday morning, March 31.

	Old	New
Firefox	1.0.1	1.0.2
Mozilla	1.7.5	1.7.6
Thunderbird	1.0	1.0.2

These updates address several potential security vulnerabilities. There should be no user-visible changes.

Note: Due to some scheduling error, this was not actually done until April 4.

29 March 2005 — Software Update

New versions of the IMAP and POP mail servers will be installed on CS Solaris and IRIX machines. There should be no user-visible changes.

23 March 2005 — Unscheduled Downtime

There was a campus power outage around 12:23 today. Ector and Ulphius (www-cgi) are still down.

Ulphius was back up around 14:32 and Ector was back up around 14:50.

17 March 2005 — Scheduled Downtime

On Thursday morning the incoming (mailslot.cs.purdue.edu) and outgoing (newman.cs.purdue.edu) CS mail servers will be upgraded to newer hardware. The upgrades will probably take about 15-20 minutes each and will done between 7AM and about 8AM.

Any mail sent into or out of CS will be queued during the time the machines are down and will be resent later. How much later depends on the sending system, but it typically 30-60 minutes.

15 March 2005 — Scheduled Downtime

On Tuesday morning Alkhwarizmi will be upgraded from Solaris 2.6 to Solaris 8. The upgrade will start at 7AM and should be completed by mid-afternoon. During much of this time the filesystems served by Alkhwarizmi (/u/u15, /u/u18, /u/u20) will be unavailable.

14 March 2005 — Software Update

The default version of OpenSSH will be updated from version 3.7.1p2 to version 3.9p1. The ssh daemon processes will be restarted. This should not interrupt active sessions.

OpenSSH 3.9 now makes a destinction between trusted and untrusted forwarded X11 connections. The intention is to provide more security with the X11 forwarding by not allowing remote X applications full access to the X server resources.

Many applications will not work over the untrusted X11 connection. We have chosen to maintain backward compatibility by designating all forwarded X11 connections as trusted by default. This is done by specifying "ForwardX11Trusted yes" in the system configuration file.

Individuals may want to take advantage of the enhanced security feature by turning off ForwardX11Trusted in their own ~/.ssh/config files.

14 March 2005 — Software Update

The default version of Firefox (/p/firefox) on the Solaris 8 systems will be updated from Firefox version 1.0 to Firefox version 1.0.1

24 February 2005 — Scheduled Downtime

On Thursday morning Balan will be upgraded from Solaris 2.6 to Solaris 8. The upgrade will start at 7AM and will be completed by 8AM. During this time the filesystems served by Balan (/u/u8, /u/u14, /u/u30) will be unavailable. During a brief time (probably less than 15 minutes), the NIS server for the "cypress" domain will be unavailable.

15 February 2005 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris and IRIX systems was updated from ClamAV version 0.82 to ClamAV version 0.83. This is the anti-virus scanner used on our incoming mail server.

11 February 2005 — Scheduled Downtime

Helga will be down from 7:30 until about 8:00 while we replace the NIC. This is necessary to get a more reliable network connection. During this time, the Xinu lab backends will be unavailable.

Note: the replacement took longer than expected because of hardware problems. It was backup up by 8:15.

9 February 2005 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris and IRIX systems was updated from ClamAV version 0.81 to ClamAV version 0.82. This is the anti-virus scanner used on our incoming mail server.

4 February 2005 — Unscheduled Downtime

Arthur had a disk failure and was shut down at 10:11. The system was back up about 11:10, but individual filesystems were not available immediately because they were being restored (p2, u1, u2, u22). All were back on-line by 12:14.

Filesystems were restored to the state at the time of the nightly backups. For the indivudual filesystems the times were

	/u/u1  Feb 04 00:13:46 2005
	/u/u2  Feb 04 00:14:31 2005
	/u/u22 Feb 04 00:17:39 2005

2 February 2005 — Software Update

The default version of ClamAV (/p/clamav) on the Solaris and IRIX systems was updated from ClamAV version 0.80 to ClamAV version 0.81. This is the anti-virus scanner used on our incoming mail server.

1 February 2005 — Unscheduled Downtime

Remus, the server for PHYS8 instructional lab, was down for about 30 minutes between 14:31 and 15:00. The machine was unplugged from power by a user in the lab and needed staff intervention to be brought back on-line.

31 January 2005 — Software Update

The default version of GNU tar (/p/gnu/gtar) on the Solaris and IRIX systems was updated from GNU tar version 1.13.25 (1.12 on IRIX) to GNU tar version 1.15.1.

11 January 2005 — Scheduled Downtime

The CGI server (www-cgi.cs.purdue.edu) was down from 12:35 until 12:45 to upgrade the hardware. All versions of software running on the system is the same. The basic system architecture is the same. The machine was upgraded from a Sun Ultra1 to a Sun Enterprise 250.

10 January 2005 — Software Update

The default version of Gaim (/p/gaim) on the Solaris systems was updated from Gaim version 0.82.1 to Gaim version 1.1.0.

7 January 2005 — Software Update

The default version of Mozilla (/p/mozilla) on the Solaris systems will be updated from Mozilla version 1.7.3 to Mozilla version 1.7.5.

4 January 2005 — Scheduled Downtime

Xinuserver will be down from 7:00AM until about 8:00AM while we upgrade the server hardware. During this time the machines in CS257 and REC108 will be essentially unusable because of the lack of network services provided by Xinuserver.

Note: The update took longer than expected. Xinuserver was back up at about 8:13AM.

29 December 2004 — Scheduled Downtime

Solaris 8 systems will be updated to the current patch level. They will be rebooted between 6:00 AM and 8:00 AM on Wednesday, December 29. Individual machines should only take about 5 minutes to reboot some time during the two hour window, but because of server dependencies the effective downtime may be longer.

27 December 2004 — Software Update

Netscape 4.79 will be removed. The /p/www/netscape path will be replaced with a link to Mozilla (/p/mozilla/mozilla).

When you run Mozilla the first time, it will inform you that you are about to create a Mozilla profile based on your Netscape 4 profile. You should click on the "Convert Profile" button to complete the conversion. Then all of your bookmarks, plugin settings, preferences, and mail settings will be be copied to your Mozilla profile.

Note1: Mozilla does not migrate the address book. If you are using the address book in Netscape and want assistance or advice on converting it, please contact Facilities Staff (software@cs.purdue.edu).

Note2: Based on our testing, USENET news server settings are not copied properly. If you use Netscape to read USENET news, you may need to manually add news server accounts. From the Mail & Newsgroups window, the procedure to add a news server account is

go to Edit -> Mail & Newsgroup Account Settings... click Add Account...
select Newsgroup account, click Next
enter your full email address (i.e. user@cs.purdue.edu), click Next
enter the name of the news server (i.e. news.cs.purdue.edu or news.purdue.edu), click Next
modify the account name if you desire, click Next
click Finish
click OK
select the new account and Manage newsgroup subsriptions

27 December 2004 — Software Update

The default version of Vim (/p/vim) on the Solaris 8 systems will be updated from Vim version 6.1 to Vim version 6.3.

27 December 2004 — Software Update

The default version of Thunderbird (/p/thunderbird) on the Solaris 8 systems will be updated from Thunderbird version 0.9 to Thunderbird version 1.0.

27 December 2004 - 31 December 2004 — Software Update

The following old versions of software will be removed from the CS Solaris systems during the Christmas semester break, the week of December 27.

Citrix ICA Client (/p/ICAClient-6.20 -- SPARC only)

/p/ICAClient-3.0 is the latest for X86
/p/ICAClient-6.30 is the lastest for SPARC

EGCS Compiler (/p/egcs-1.1.2)

This is an old development branch of the GCC compiler suite.
Current default GCC compilers are in /p/gcc2 (2.95.2) and /p/gcc3 (3.3)

Firefox (/p/firefox-0.8, /p/firefox-0.10 [1.0 prerelease])

The current version is Firefox 1.0 (/p/firefox)

GAIM (/p/gaim-0.74)

The current version is Gaim 0.82.1 (/p/gaim)

Java

In general you should be using /p/java, but there are still a few applications that may require older versions for compatibility. The latest of each major version will be kept around for the time being.

/p/java-1.2.1: The latest 1.2.x version installed is 1.2.2_07 (/p/java-1.2)
You probably should be using /p/java anyway
/p/java-1.3.0: The latest 1.3.x version installed is 1.3.1_01 (/p/java-1.3)
You probably should be using /p/java anyway
/p/java-1.4.1
/p/java-1.4.2_05: The latest 1.4.x version installed it 1.4.2_06 (/p/java, /p/java-1.4)

Mozilla (/p/mozilla-1.6, /p/mozilla-1.7.2)

The current version is 1.7.3 (/p/mozilla)

Netscape 4 (/p/netscape-4.79)

You should be using a newer, supported browser like Mozilla (/p/mozilla) or Firefox (/p/firefox)

Sun Netscape 7 (/opt/SUNWns6)

Sun's port of Netscape 7 has known vulnerabilities. You should be using a newer, supported browser like Mozilla (/p/mozilla) or Firefox (/p/firefox)

OpenSSL (/p/openssl-0.9.7d)

This was replaced with OpenSSL 0.9.7e because of a security vulnerability

Pine (/p/pine-4.58)

The current version is Pine 4.61 (/p/pine)

Python (/p/python-2.2.2, /p/python-2.3.3)

The current version is Python 2.3.4 (/p/python)

teTeX (/p/teTeX-1.0)

The current version is teTeX-2.0.2 (/p/TeX)

Thunderbird (/p/thunderbird-0.5, /p/thunderbird-0.8, /p/thunderbird-0.9)

Version 1.0 will be the default (/p/thunderbird)

Vim (/p/vim-5.6, /p/vim-6.1)

Vim 6.3 will be the default (/p/vim)

22 December 2004 — Software Update

The default version of PHP (/p/php) on the Solaris 8 systems was updated from PHP version 5.0.2 to PHP version 5.0.3

The new version is built with libtidy support

21 December 2004 — Software Update

Samba was upgraded from Samba 3.0.8 to Samba 3.0.10. The samba servers will be restarted Tuesday evening.

21 December 2004 — Software Update

The default version of SpamAssassin was updated from version 3.0.1 to version 3.0.2.

30 November 2004 — Software Update

The default version of java (/p/java) on Solaris systems will be updated from JDK 1.4.2_05 to JDK 1.4.2_06.

16 November 2004 — Software Update

The default version of PHP (/p/php) on the Solaris 8 systems will be updated from PHP version 4.3.7 to PHP version 5.0.2

The new version is built with libtidy support

16 November 2004 — Software Update

A 10MB per-message limit has been re-instated on incoming mail. People sending very large attachments were causing overload for the SPAM scanning.
Update 17 November 2004: The SPAM scanning software was modified to more efficiently handle large messages, and the limit has been removed.

16 November 2004 — Software Update

Samba will be upgraded from Samba 3.0.5 to Samba 3.0.8. The samba servers will be restarted Tuesday evening.

15 November 2004 — Software Update

The default version of Firefox (/p/firefox) on the Solaris 8 systems will be updated from Firefox version 0.8 to Firefox version 1.0

The default version of Thunderbird (/p/thunderbird) on the Solaris 8 systems will be updated from Thunderbird version 0.5 to Thunderbird version 0.9

15 November 2004 — Software Update

Sudo was updated to sudo version 1.6.8p2 on the Solaris and IRIX machines.

8 November 2004 — Software Update

The default version of OpenSSL was updated from version 0.9.7d to version 0.9.7e.

1 November 2004 — Software Update

The 5MB per-message limit on incoming mail has been removed.

28 October 2004 — Software Update

The default version of SpamAssassin was updated from version 3.0.0 to version 3.0.1.

26 October 2004 — Software Update

The turnin program was modified to make it more obvious when the user specifies options that overwrite an existing submission.

21 October 2004 — Software Update

The default version of Pine (/p/pine) will be updated from Pine version 4.58 to Pine version 4.61 on Thursday morning, October 21.

For details on changes, please see changes from Pine 4.58 to 4.60 and changes from Pine 4.60 to 4.61

20 October 2004 — Unscheduled Downtime

A security patch that was applied live on the Solaris 8 systems at about midnight caused confusion for the mail delivery processes, causing mail to be received, but held in the queue. This was corrected about 8:30 when the processes were restarted.

18 October 2004 — Software Update

The version of ClamAV virus scanning software on the incoming mail server was upgraded from ClamAV version 0.75 to ClamAV version 0.80.

12 October 2004 — Unscheduled Downtime

At about 11:31 the process that handles communication between sendmail and spamassassin on our incoming mail server died. It was restarted at 11:33 by an automated process, but was restarted with an incorrect option. As a result, mail that scored above our threshhold of 6 was not rejected, but delivered to users. Users may have seen an increase of SPAM in their mailboxes. The error was detected and corrected at about 08:36 on October 13.

8 October 2004 — Unscheduled Downtime

At about 17:00 we lost connectivity to the north half of the Physics building. Some time after that we lost connectivity to the rest of the building. The power failure is due to a Cinergy transformer failure. They are working on the problem, but there is no estimated time of repair.
This was resolved at about 23:45.

8 October 2004 — Software Update

The default version of SpamAssassin (/p/spamassassin) on the Solaris and IRIX systems will be updated from SpamAssassin version 2.63 to SpamAssassin version 3.0.0.

If you are using SpamAssassin directly from procmail (most people probably are NOT and hence can ignore this part) and are using the Bayesian filtering, you will need to convert your Bayesian database to version 3 format before it will be used by SA 3.0.0.

disable spamassassin (i.e. remove it from .procmailrc)

run 2.63 version of sa-learn to sync the journal

     /p/spamassassin-2.63/bin/sa-learn --rebuild

run 3.0.0 version of sa-learn to upgrade the database format
```
     /p/spmassassin-3.0.0/bin/sa-learn --sync
	    
```
There will be a complaint about not being able to load the version 2 database. This is OK, just give the conversion time to complete.
wait until after 9AM when the default is upgraded (i.e. spamassassin --version reports version 3.0.0)
re-enable spamassassin

6 October 2004 — Software Update

The version of SpamAssassin filtering software on the incoming mail server was upgraded from SpamAssassin version 2.63 to SpamAssassin version 3.0.0.

The only user visible changes should be in the mail headers added by SpamAssassin. In particular, the X-Spam-Status header will now list score=n.n instead of hits=n.n. If you are using pattern matching for this value (instead of the X-Spam-Level header), you will need to change your matching pattern.

27 September 2004 — Software Update

The default version of Mozilla (/p/mozilla) on the Solaris systems will be updated from Mozilla version 1.7.2 to Mozilla version 1.7.3.

15 September 2004 — Scheduled Downtime

Xinuserver will be down from about 8:00AM until about 8:20AM on Wednesday morning, September 15. We will be installing a new network interface.
This will temporarily disrupt network services for the workstations in CS257 and REC108, but they should recover after Xinuserver is back up.

10 September 2004 — Software Update

The default version of gaim (/p/gaim) will be updated from gaim version 0.74 to gaim version 0.82.1.

7 September 2004 — Software Update

The default version of Maple (/p/maple) on Solaris SPARC machines will be updated from Maple version 7 to Maple version 9.5. The old version will remain available as /p/maple-7 for the near future.
The default version on Solaris x86 machines will remain Maple version 7 because that's the latest available.

6 September 2004 — Software Update

The default version of Mozilla (/p/mozilla) will be updated from Mozilla version 1.6 to Mozilla version 1.7.2. The old version will remain available as /p/mozilla-1.6 for the near future.
Also at this time /p/mozilla-1.5, /p/mozilla-1.7, and /p/mozilla-1.7.1 will be removed.

3 September 2004 — Scheduled Downtime

Xinuserver will be down from about 7:30AM until about 8:00AM on Friday morning, September 3. This is necessary to try to solve a network problem.

3 September 2004 — Software Update

The default version of Python (/p/python) will be updated from Python version 2.1.3 to Python version 2.3.4. The old version will remain available as /p/python-2.1.3 for the near future.

1 September 2004 — Unscheduled Downtime

At about 11:17 one of the drives attached to Cassandra used by the Oracle server stopped responding. At about 13:25 the machine was shut down and the problem investigated. The drive was responding after a power-cycle with no indication of further problems. Cassandra was back up about 13:41 and the Oracle server was back on-line by about 13:56.

1 September 2004 — Software Update

The default version of GNU *grep (in /p/gnu) was updated from grep version 2.3 to grep version 2.5.

24 August 2004 — Unscheduled Downtime

Lore, the server for the ugrad NIS domain, crashed about 05:16 because of a memory error and failed to reboot automatically because of filesystem problems. It was rebooted by 08:18.

19 August 2004 — Scheduled Downtime

Lisa will be upgraded on Thursday morning, August 19 from 6:00AM until about 7:00AM. We will be replacing the old SPARCstation5 with a two-processor Enterprise 250. The upgrade will also provide more disk space and an upgrade of the OS to Solaris 8.

During this time machines in the gradmath NIS domain (basically all the CS grad/faculty UNIX workstations in the MATH building and the PHYS building) may experience some delays, but should return to normal after Lisa is back up. The actual down time should be much less than the one hour window of time.

This upgrade was made by the replacement of other servers that did not occur until last week.

19 August 2004 — Software Update

NOTICE:Due to a conflict with the timing of a research project, this upgrade has been postponed until a later date.

The primary CS Oracle server (csdb) will be upgraded from Oracle version 9.2.0.1 to Oracle version 9.2.0.5.

The server will be shut down and a complete backup done in case of difficulty with the upgrade. Due to the size of the data involved, the backup and upgrade may take one to two hours.

During the upgrade window, the following services will be unavailable:

https://portals.cs.purdue.edu/
https://applications.science.purdue.edu/
https://calendars.cs.purdue.edu/

17 August 2004 — Scheduled Downtime

Solaris 8 systems will be updated to the current patch level. They will be rebooted between 5:00 AM and 7:00 AM on Tuesday, August 17. Individual machines should only take about 5 minutes to reboot some time during the two hour window, but because of server dependencies the effective downtime may be longer.

12 August 2004 — Scheduled Downtime

The servers Remus and Romulus will be down for hardware upgrades. During this time, the SunRay labs in PHYS8 and PHYS10 will be unusable. The upgrades will probably take several hours. The machines should be back up by late afternoon.

11 August 2004 — Software Update

The default version of FVWM will be updated from version 2.4.17 to version 2.4.18. The convenience links in /p/X11 (/p/X11/fvwm, /p/X11/fvwm2) will also updated be updated to the new version.

9 August 2004 — Unscheduled Downtime

There appears to have been a power outage in PHYS between about 23:46 and 00:15. As a result all CS systems in PHYS were down during that time.

5 August 2004 — Software Update

The local version of tcsh (/usr/local/bin/tcsh) will be updated from version 6.10.00 to version 6.13.00.

5 August 2004 — Software Update

The default version of libpng (/p/libpng) was updated from version 1.2.5 to version 1.2.6rc1.

2 August 2004 — Scheduled Downtime

ITaP will be moving the CS building network connection off of the legacy network backbone and onto the new Boilernet backbone. This is scheduled to take place between 5:30 AM and 6:00 AM. Actual downtime should be no more than 10 minutes. This will affect network connections outside the CS building and may cause some disruption between subnets.

2 August 2004 — Software Update

The default version of XFree86 (/p/XFree86) will be updated from XFree86 version 4.2.0 to XFree86 version 4.4.0. The old version will remain available as /p/XFree86-4.2.0.

28 July 2004 — Unscheduled Downtime

There was an ITaP network disruption for CS machines in the MATH building between 09:59 and 10:03.

28 July 2004 — Software Update

The default version of Ghostscript (/p/ghostscript) will be updated from AFPL Ghostscript version 8.00 to AFPL Ghosscript version 8.14. The old version will remain available as /p/ghostscript-8.00 until 25 August 2004.

Version 8.14 contains many bug fixes over the previous default (8.00). It also claims to have better font rendering and better handling of PDF files.

26 July 2004 — Unscheduled Downtime

There was an ITaP network disruption for CS machines in the MATH building between 06:00 and 06:10. This caused lingering NFS problems on some Solaris machines in MATH.

23 July 2004 — Software Update

On Friday morning, July 23, we will be upgrading the Samba software on the Solaris machines to Samba 3.0.4. The upgrade window will be 8:00 AM until about 8:30 AM, but the downtime for an individual server will be very short (probably less than a minute).

For standard file access of UNIX shares from Windows machines, this should be a transparent change. The old server will be shut down and the new one restarted within a few seconds. Windows machines should reconnect without significant disruption.

There will be a couple changes with the Samba 3 upgrade that may be user visible for a few users. First, smbclient will now be able to authenticate properly with our Windows 2003 servers. This is only relevant for Solaris users trying to access Windows shares.

Second, with Samba 3 we will be removing the Samba printer shares. Windows users should attach to printers through the Windows printer server using \\printers\printername. Logs indicate the Samba printer shares have not been used in the last year or two, so this should not have a major impact.

Last, the Samba server on data.cs.purdue.edu will be turned off. This machine is not a fileserver and because we are no longer serving printers through Samba, there is no need to run a server there. If you are using \\data\something to access a UNIX share, please change it to the appropriate server. If you need help with this, please contact software@cs.purdue.edu.

Note: Because of a very recent security release, we will actually be upgrading to Samba 3.0.5.

Note: An additional configuration change is the way in which permissions are set on newly created entries (files and folders). It the past it was dependent on a global permission mask. With the new server, permissions and group owner will be inherited from the folder in which the file is created. The setgid bit on the folder (on the UNIX side) must be set for the group to be inherited.

20 July 2004 — Unscheduled Downtime

The primary Solaris package fileserver, Bors, rebooted between 10:21 and 10:24 because of a system panic.

19 July 2004 — Software Update

The default version of the Forte Developer (aka Sun WorkShop) was updated from Forte 6 update 1 to Forte 6 update 2. Update 1 is still available in /opt/SUNWspro-6.1/bin.

16 July 2004 — Software Update

The default version of pbm utilities (/p/pbm) will be updated from Netpbm version 1mar1994 to Netpbm version 10.15. The old version will remain available in /p/netpbm-1mar1994.

Note: Due to an oversite, this was not actually done until Monday, 19 July 2004

14 July 2004 — Unscheduled Downtime

The ITaP Cisco router for CS rebooted at about 16:57 causing a couple minutes of traffic disruption between various CS subnets and the outside world. It was back up by 17:00.

12 July 2004 — Scheduled Downtime

The CS WEB and FTP server will be down for an OS upgrade from 6:30 AM until about 7:30 AM. During this time CS web pages on www.cs.purdue.edu will be unavailable and FTP access to ftp.cs.purdue.edu will be unavailable.

During the upgrade the package filesystems /p/p6, /p/p7, /p/p24, /p/p28, /p/p35, /p/p36 and /p/p37 will be unavailable. These include the filesystems for the Solaris Java packages and the Solaris Netscape/Mozilla packages.

During this time, the HTTP server software will be upgraded from Apache 1.3.12 to Apache 1.3.31. We will also be updating the default /p/apache to reference Apache 1.3.31.

Note: The update took longer than expected. The HTTP and NFS server was back up about 8:50 AM. FTP services were not available until about 9:10 AM. The Jabber server was not available until about 10:52 AM.

12 July 2004 — Software Update

During this time, the HTTP server software will be upgraded from Apache 1.3.12 to Apache 1.3.31. We will also be updating the default /p/apache to reference Apache 1.3.31.

25 June 2004 — Software Update

The default version of Perl will be updated from Perl version 5.6.1 to Perl version 5.8.4. The old version will remain available in /p/perl-5.6.1.

22 June 2004 — Unscheduled Downtime

One of the switches (switch1-2) on the 128.10.2.0/24 subnet failed, causing about 20 machines to be without a network connection between 15:00 and 15:15.

18 June 2004 — Software Update

The default version of Python will be updated from Python version 2.1.3 to Python version 2.3.3. The old version will remain available in /p/python-2.1.3 until 16 July 2004.

Note: There were technical problems with Python 2.3.3, so the default Python was reverted to 2.1.3.

15 June 2004 — Unscheduled Downtime

The CS department was disconnected from much of the outside network between 14:20 and about 14:53 because of network routing problems at ITaP and the GigaPOP.

11 June 2004 — Software Update

The default version of CVS will be updated from CVS 1.12.8 to CVS 1.12.9 (security update).

10 June 2004 — Software Update

The default version of gnuplot (/p/gnu/gnuplot) will be updated to version 4.0.0 from version 3.7.1. The old version will remain available as /p/gnu/gnuplot-3.7.1 until 12 July 2004.

4 June 2004 — Software Update

The default version of StarOffice will be updated from StarOffice version 6 to StarOffice version 7. The old version will remain available in /p/staroffice-6.0 until 2 July 2004.

4 June 2004 — Software Update

The default version of bison (/p/gnu/bison) was updated to bison verion 1.875 and the default verion of GNU make (/p/gnu/make) was updated to make 3.80.

26 May 2004 — Software Update

The default version of Mozilla will be updated from Mozilla version 1.5 to Mozilla version 1.6. The old version will remain available in /p/mozilla-1.5.

25 May 2004 — Unscheduled Downtime

ITaP was performing core network link re-homings between 05:00 AM and 07:00 AM. During this time, and continuing until about 07:45 AM, the 128.10.0.0/16 network was generally unreachable from outside Purdue.

23 May 2004 — Scheduled Downtime

On Sunday evening between 7:30 PM and 10:30 PM ITaP will be changing the backbone network connection to several buildings on campus including PHYS. The building will lose network connectivity for approximately 15 minutes some time during the maintenance window.

20 May 2004 — Scheduled Downtime

20 May 2004 — Software Update

The current self-signed SSL certificates used by our UNIX systems for SSL IMAP access will expire on Friday, May 21. These certificates will be regenerated on Thursday, May 20. Some mail client applications may cleanly accept the updated certificate, or require users to accept the new certificate. Other clients may simply reject the connection. It may be necessary to manually delete the old certificate first.

20 May 2004 — Software Update

The default version of CVS will be updated from CVS 1.12.7 to CVS 1.12.8 (security update).

13 May 2004 — Scheduled Downtime

Remus and Romulus will be shut down from 8:00 AM until about 8:30 AM to install additional processor modules.

10 May 2004 — Software Update

The default version of Matlab will be updated from Matlab 6.1 to Matlab 6.5. Matlab 6.5 has been available since August, but was not made the default.

24 April 2004 — Scheduled Downtime

All power will be turned off to the Physics Building from 6:00 AM to 10:00 AM on Saturday morning, April 24, 2004. CS UNIX machines in Physics will be shut down about 05:30 AM in anticipation.

16 April 2004 — Software Update

The default version of CVS will be updated from CVS 1.12.4 to CVS 1.12.7.

8 April 2004 — Unscheduled Downtime

The power breaker for the S3 servers in the machine room tripped at about 21:17. This affected Death, Famine, Fruitbat, Gollum, Hotknife, Jaguar, Pestilence, Thommo, War and Zardoz. Power was restored and machines rebooted by 21:50.

5 April 2004 — Software Update

We will change SPAM mail filtering to reject mail that is rated 6 or higher by SpamAssassin. Mail from outside will be rejected with an appropriate SMTP rejection response as being SPAM so any legitimate senders should be notified.

24 March 2004 — Software Update

Installed Clam AntiVirus scanning on Mailslot, the incoming mail server. Our mail server rejects mail containing identified viruses.

23 March 2004 — Software Update

The default version of SpamAssassin will be updated from version 2.61 to version 2.63.

19 March 2004 — Scheduled Downtime

Balan will be down from 7:30 AM until about 8:30 AM (probably won't be that long) to install a new network interface

18 March 2004 — Scheduled Downtime

Solaris 8 systems will be updated to the current patch level. They will be rebooted between 5:00 AM and 8:00 AM on Saturday, January 10. Individual machines should only take about 5 minutes to reboot some time during the two hour window, but because of server dependencies the effective downtime may be longer.
Note: The reboot caused problems for Newman (aka Mailhost) that delayed it's reboot for about 1.5 hours.

17 March 2004 — Scheduled Downtime

On Wednesday morning, March 17, the printer server Data (server for most of the printers in the CS building) will be upgraded. The upgrade will start at 7:00 AM and may take as long as an hour. During this time, most printers in the CS building will be unavailable.

17 March 2004 — Software Update

On Wednesday, March 17, CS will have ITaP implement port-blocking for Microsoft RPC, NetBIOS and Data service. CS is an early adopter of a policy that is intended to be implemented campus-wide. It is already in place for some other departments. Please see the announcement page for full details.

17 March 2004 — Software Update

The default version of OpenSSL was updated from version 0.9.7c to version 0.9.7d.

15 March 2004 — Scheduled Downtime

On Monday morning, March 15, two user filesystems will be moved on Lore to make more space available. Starting at 7:00 AM, /u/u92 and /u/u96 will be unavailable. This will probably take 1-2 hours. Anyone who's home directory is on /u/u92 or /u/u96 should be logged off during this time.
After the filesystems have been moved, Lore will be shut down to replace a defective memory module. This will probably take about 45 minutes and should be completed before 11:00 AM. A shutdown notice will give 5 minutes warning.

25 February 2004 — Scheduled Downtime

Remus and Romulus will be rebooted on Wednesday morning between 8:00 AM and 9:00 AM to reconfigure a filesystem. The machines should only be down for about 5 minutes for each reboot, but may require two reboots.

23 February 2004 — Unscheduled Downtime

The backbone network switch for the 128.10.2.0/24 subnet was experiencing problems between about 9:50 AM and 10:45 AM. This caused problems accessing several major servers (Bors, Newman, Arthur).

31 January 2004 — Scheduled Downtime

Solaris 6 machines will be rebooted Saturday morning between 7am and 8am. This reboot is to install the latest kernel patch. The reboot will take about 5-10 minutes for each machine
The machines are

     alkhwarizmi    bach	   balan	  beethoven
     cassandra	    data	   dolphin	  eros
     guinan	    gwen	   lisa		  lucan
     pano4p	    punch	   raid4	  xoanon

22 January 2004 - 28 January 2004 — Scheduled Downtime

As part of the BoilerNet campus networking upgrade, the Telecom division of ITaP will be upgrading networking hardware in the Physics building during the month of January, 2004. Individual rooms used by CS will be offline during the following time blocks. Please pay careful attention to the AM/PM times.

01/22/04 9:30PM-12:30AM	01/23/04 8:30AM-9:30AM	01/27/04 9:30PM-12:30AM	01/28/04 8:30AM-11:30AM
PHYS8 PHYS10 PHYS11 PHYS11A PHYS12 PHYS12A PHYS12B	PHYS50 PHYS92	PHYS136 PHYS137	PHYS167 PHYS178 PHYS182 PHYS196

20 January 2004 — Scheduled Downtime

As part of the BoilerNet campus networking upgrade, the Telecom division of ITaP will be upgrading networking hardware in the Physics building during the month of January, 2004.

On Tuesday, January 20, from 6:00 - 7:00 AM, ITaP engineers will be doing maintenance in PHYS in preparation for switch upgrades. Total downtime should be limited to less than 5 minutes, but the entire window will be reserved. This will affect network connectivity for all of PHYS.

15 January 2004 — Scheduled Downtime

On Thursday morning, January 15, Arthur will be upgraded from a SPARCserver 1000 to a Sun Fire V250. The upgrade will start at 6:00 AM and may take as long as 2 hours (I hope it will be less).

During the upgrade process, the following filesystems will be unavailable

	/u/u1
	/u/u2
	/u/u22
	/u/u42
	/p/p2

The mailer command will also be unavailable during this time.

This upgrade was made possible by the generosity of Dr. Jan Vitek.

10 January 2004 — Scheduled Downtime

Solaris 8 systems will be updated to the current patch level. They will be rebooted between 6:00 AM and 8:00 AM on Saturday, January 10. Individual machines should only take about 5 minutes to reboot some time during the two hour window, but because of server dependencies the effective downtime may be longer.

Note: The updates took longer than anticipated. The window extended to about 9:10 AM.

6 January 2004 — Scheduled Downtime

Lore will be down from 8:00 AM until about 8:30 AM. We will be checking on memory problems.

During this time, the filesystems /u/u91 - /u/u97 will be unavailable.

4 January 2004 - 5 January 2004 — Unscheduled Downtime

Bagdemagus (server for /u/u17) has exhibited some disk problems. It was down Sunday evening for some cleanup, then again Monday morning for some more extensive repair work.

31 December 2003 — Scheduled Downtime

Alkhwarizmi will be rebooted on Wednesday morning, December 31 between 8:00 and 8:30 AM. This is necessary to allow us to replace the battery in the external storage array and reroute the power connection.

During this time, the filesystems /u/u15, /u/u18 and /u/u20 will be unavailable.

29 December 2003 — Software Update

OpenOffice (/p/OpenOffice-1.0) will be removed. Anyone using this software should be using StarOffice (/p/staroffice) instead.

29 December 2003 — Software Update

The default version of CVS will be updated from CVS 1.11 to CVS 1.12.4. The old version will remain available in /p/cvs-1.11.

19 December 2003 — Software Update

The default version of SpamAssassin was updated from version 2.60 to version 2.61.

8 December 2003 — Unscheduled Downtime

The power conditioner in the main CS machine room shut off about 01:25 and was not reset until about 07:05. Many of the UNIX systems were not back up until after 08:00.

26 November 2003 - 29 November 2003 — Unscheduled Downtime

Our incoming mail server was flooded with incoming mail from a misconfigured remote system. This caused significant delays for mail delivery from outside senders starting Wednesday evening. It was corrected Saturday evening.

It appears that the backlog on some servers (in particluar the purdue.edu server) were delayed until Monday afternoon. The delay is dependent on the sending system's retry interval.

ITaP also had problems with their mail queue over the holiday weekend, and their resolution process resulted in longer than normal delays for some messages -- many arriving as late as Monday evening, December 1.

24 November 2003 — Unscheduled Downtime

Arthur was hit with a denial of service attack to the samba service between about 19:38 and 21:43, by which time it ran out of swap space. This interrupted NFS and other services until it was cleaned up by manual intervention at about 01:47.

20 November 2003 — Unscheduled Downtime

ITaP networking was out between about 14:35 and 14:55.

10 November 2003 — Software Update

The default version of Mozilla will be updated from Mozilla version 1.4 to Mozilla version 1.5. The old version will remain available in /p/mozilla-1.4.

8 November 2003 — Unscheduled Downtime

Arthur locked up at about 15:00 and was reset at about 17:43.

5 November 2003 — Unscheduled Downtime

A circuit was overloaded and tripped in MATH 419, causing several machines to lose power at about 21:00. The power was restored about 08:00 the next morning.

31 October 2003 — Software Update

The default version of TeX will be updated from teTeX version 1.0 to teTeX version 2.0.2. The old version will remain available in /p/teTeX-1.0.
This change was delayed a week (7 November 2003) due to a staff oversight.

24 October 2003 — Unscheduled Downtime

Power went out on campus between 09:21 and 10:29. Most CS machines were back on-line by about 11.

20 October 2003 — Scheduled Downtime

Between 6:00AM and 7:00AM ITaP will be replacing the network switch that connects the CS networks with the router in the CS building. This will affect connections between CS networks within the building and from the CS building to everywhere else.

19 October 2003 — Unscheduled Downtime

There was major campus-wide power fluctuation at about 06:40 that caused many systems to reboot or go into a non-usable state. This also affected networking hardware. Most CS-maintained systems were back up by about 13:00. All other CS-maintained systems (i.e. individual workstations in remote locations) were back up by about 09:00 on Monday, October 20.

19 October 2003 — Unscheduled Downtime

Zardoz, a major server for the S3 group, is down with hardware problems. There is no estimated time of repair.
Zardoz was back on-line at 14:13 on Monday, October 20.

14 October 2003 — Software Update

The default version of OpenSSH will be updated from version 3.5p1 to version 3.7.1p2.

7 October 2003 — Software Update

The default version of OpenSSL was updated from version 0.9.7a to version 0.9.7c.

26 September 2003 — Software Update

The default version of SpamAssassin was updated from version 2.55 to version 2.60.

23 September 2003 — Software Update

Pine 4.33 will be removed from the system. It contains known vulnerabilities in processing attachments. The default version was updated to 4.58 last week.

16 September 2003 — Software Update

The default version of Pine will be updated to 4.58 to address a security flaw in the previous version.

9 September 2003 — Unscheduled Downtime

More intermittent network problems, possibly attributed to newer network hardware and firmware. Firmware upgrades are being backed out.
It appears the cause may have been a new switch added to the network. It did not have any active hosts connected, so it was disconnected and preliminary results look good.
This problem was caused by Dell network switches on the network. They are being removed.

4 September 2003 — Unscheduled Downtime

At about 10:45 we started seeing what appears to be broadcast flooding on the 128.211.1.0 subnet. This appears to be coming from outside CS. Purdue NOC has been contacted and is looking into it. This is causing intermittent connectivity problems on this network.
This problem was caused by Dell network switches on the network. They are being removed.

26 August 2003 — Unscheduled Downtime

Between 11:15 and 12:15 the campus lost connectivity with the outside world. Connectivity on-campus remained intact.

21 August 2003 — Scheduled Downtime

Between 7:30AM and 8:30AM Cybil will be upgraded from Solaris 2.6 to Solaris 8. The filesystems /u/u29, /p/p42, /p/p44 and /p/p45 will be unavailable during that time.

19 August 2003 — Scheduled Downtime

Solaris 8 machines will be rebooted with the latest Solaris recommended patches bwtween 6AM and 8AM. The reboot will take about 5-10 minutes for each system.

19 August 2003 — Software Update

Solaris 8 machines will be rebooted with the latest Solaris recommended patches bwtween 6AM and 8AM. The reboot will take about 5-10 minutes for each system.

14 August 2003 — Unscheduled Downtime

Between 16:38 and 17:40 the 128.211.1.0 subnet experienced separation when several of the network switches were unable to communicate with each other.

14 August 2003 — Scheduled Downtime

Between 7AM and 9AM Helga will be upgraded from Solaris 2.6 to Solaris 8. During this time the boot server for the Xinu lab (CS257) backends will be down. The package directories /p/art and /p/xinu will be unavailable.

13 August 2003 — Scheduled Downtime

Between 6AM and 9AM Lore will be upgraded from Solaris 2.6 to Solaris 8. During this time the CS G040, PHYS 8 and PHYS 10 labs will be unusable. The filesystems /u/u91, /u/u92, /u/u93, /u/u94, /u/u96 and /u/u97 will be unavailable.

12 August 2003 — Unscheduled Downtime

Between 11:08 and 11:42 ITaP networking problems resulted in lost connectivity between the CS machines in MATH (net 128.10.7.0) and the rest of the CS networks. It also resulted in lost routing to the outside world.

12 August 2003 — Scheduled Downtime

Between 7AM and 9AM Xinuserver will be upgraded from Solaris 2.6 to Solaris 8. During this time the Xinu (CS257) and REC 108 labs will be unusable. The filesystems /u/u3, /u/u9, /u/u56 and /u/u57 will be unavailable.

5 August 2003 — Unscheduled Downtime

Xinuserver failed with hardware problems and was shut down for repairs about 09:12. No estimated time of repair yet.
Xinuserver was back up at about 13:49.

29 July 2003 — Unscheduled Downtime

The fuse for one of the circuits in MATH 419 (machine room) blew about 19:53. A temporary workaround was put in place for the major machines in the room and they were back up by about 21:45. Some of the less used machines were left down to avoid blowing another fuse.

24 July 2003 — Unscheduled Downtime

The primary printer server Data started experiencing hardware problems at about 19:45 and was unresponsive until it was reset at 07:20 the next morning.

18 July 2003 — Software Update

The default version of Mozilla (/p/mozilla/mozilla) will be updated to version 1.4. The previous version will remain available in /p/mozilla-1.3 for some time.

17 July 2003 — Unscheduled Downtime

At about 17:30 someone (non-CS staff) changed the network connection for Lisa in a way that caused it to be off the net. This was corrected about 08:46 the following morning and Lisa was rebooted about 09:02. During this time, NIS services for CS UNIX machines in MATH and PHYS were distrupted, and /u/u28 was unavailable.

17 July 2003 — Scheduled Downtime

Arthur will be shut down from 7:30AM until about 8AM to replace failed memory modules.

15 July 2003 — Unscheduled Downtime

Arthur halted with a watchdog reset at about 10:30 because of a failure in one of the memory modules. The system was rebooted with the failed component disabled and will be shutdown for maintenance at a later time.

3 July 2003 — Scheduled Downtime

Alkhwarizmi will be shut down at 8AM for about 10 minutes to move the machine and reroute the power connection.

1 July 2003 — Unscheduled Downtime

The 128.211.1.0 subnet was flooded with traffic that severely impacted the link to the router. As a result any traffic off the subnet was very limited. The problem existed from midnight until about 8:30AM.

1 July 2003 — Unscheduled Downtime

ITaP networks went down around 12:20PM, breaking our connection from the CS building to the rest of campus and the outside world. The connection was back up at 1PM. This was due to a UPS failure.

11 June 2003 — Software Update

The default version of SpamAssassin was updated from version 2.54 to version 2.55.

9 June 2003 — Scheduled Downtime

On Monday afternoon, June 9, from 5PM until 7PM ITaP will be performing network maintenance in MATH. During this time, network connections for CS and CRI offices in MATH will be down.

7 June 2003 — Scheduled Downtime

The main CS Department mail server Newman.cs.purdue.edu (aka mailhost.cs.purdue.edu) will be upgraded on Saturday morning, June 7 between 6am and 7am. During this time, mail between CS machines and outside addresses will not be delivered, but all mail should be queued and delivered at a later time (probably by 8am).

7 June 2003 — Software Update

The SPAM tagging has been re-enabled after the upgrade of our primary mail server. Please see http://www.cs.purdue.edu/help/spam/ for more details.

6 June 2003 — Unscheduled Downtime

The Exchange server was unavailable from 11PM until about 10AM on Saturday morning. During this time the Blackberry server was also down. This was caused by the installation of some system patches.
The IMAP service of the Exchange server was down until about 12:30 on Sunday.

4 June 2003 — Software Update

Sendmail has been updated to version 8.12.9 on all Solaris and IRIX systems. This version has been running for several weeks on our main mail servers.
Procmail has been updated to version 3.22 on all Solaris and IRIX systems.

2 June 2003 — Unscheduled Downtime

As of about 21:40 there appears to be a problem with the 128.10.3.250 interface on the ITaP maintained router. They have been notified. Because of routing on multi-homed hosts, this affected access to Bors (package NFS server) for machines not on the 128.10.3.0/24 subnet. However that has been fixed for now (as of about 22:22).

25 May 2003 — Scheduled Downtime

On Sunday evening, May 25, from 10PM until about 12midnight, Ector will be unavailable. We will be replacing the machine with a new Sun Fire V880. This will provide significantly more processing power and more disk space.

During this time, the following filesystems will be unavailable.

	/u/u4
	/u/u7
	/u/u12
	/u/u13
	/u/u24
	/u/u50

Because Ector is the CS department news server, USENET News will also be unavailable during this time.

The license server for FrameMaker will also be down during this time.

23 May 2003 — Software Update

The default version of ns will be updated to ns-2.26. The current default is 2.1b9.

22 May 2003 — Scheduled Downtime

Network switch upgrades from 07:15 - 07:30.

21 May 2003 — Unscheduled Downtime

The network problems on 128.211.1.0/24 appear to be the result of research work being done on the production network rather than the appropriate test networks. The students have been notified.

19 May 2003 — Unscheduled Downtime

More network hardware problems on the 128.211.1.0/24 subnet. There were problems Sunday from 15:26 - 15:49 and Monday at about 14:16. It appears to be related to elevated levels of network activity (but not saturation). Switch5-bb that connects all the 128.211.1.0/24 switches will probably be replaced this week.

17 May 2003 — Software Update

NOTICE:The SPAM tagging has been turned off because of some mail corruption problems. We suspect this was caused by hardware problems and will be re-enabled in the future.

15 May 2003 — Unscheduled Downtime

Network hardware problems on the 128.211.1.0/24 subnet as of about 12:00 noon. Work in progress. This appears to have been a temporary problem with no known cause at this time.
Best guess is that this was caused by high network load on one of the switches.

15 May 2003 — Software Update

The default version of bash will be updated to 2.05b.0. The current default is 2.00.0.

The default location of bash will also change. For years it has been /usr/local/gnu/bash. The default location will change to /usr/local/bin/bash (consistent with tcsh and ksh). The /usr/local/gnu/bash link will remain, but all password file entries will be updated to /usr/local/bin/bash.

The old version of bash will remain available for a while as /usr/local/gnu/bash-2.00.0.

15 May 2003 — Software Update

The default version of SpamAssassin was updated from version 2.52 to version 2.54.

15 May 2003 — Software Update

SPAM rating of mail passing through our main mail servers has been added to aid individuals in filtering SPAM. Please see http://www.cs.purdue.edu/help/UNIXFAQ.html#Q1.10 for more details.

14 May 2003 — Software Update

The default version of ghostscript (/p/gnu/gs) will be updated from version 7.03 to version 8.00. Version 7.03 will remain available as /p/gnu/gs-7.03.

Ghostscript versions 5.50 and 6.50 will be removed from the system.

The default version of Perl (/p/perl/bin/perl) will be updated from version 5.005 to version 5.6.1. Perl 5.005 will remain available as /p/perl-5.005/bin/perl.

The default version of Mozilla (/p/mozilla/mozilla) will be updated from version 1.2.1 to version 1.3. Mozilla 1.2.2 will remain available as /p/mozilla-1.2.1/mozilla.

13 May 2003 — Unscheduled Downtime

Ector's fibre channel connection to the external disk array failed temporarily between 16:12 and 16:47, causing problems for the news spool filesystem. Some time after 16:48 the problems appeared to have caused general system degredation. By about 19:25 the system was unusable. Ector was reset and rebooted at about 21:35.

12 May 2003 — Software Update

The self-signed SSL certificates for the UNIX machines will be regenerated.

1 May 2003 — Unscheduled Downtime

The Cisco 3550 routing switch was rebooted by ITaP at 07:45 with a new version of code to correct the previous crashes.

29 April 2003 — Unscheduled Downtime

The Cisco 3550 routing switch crashed about 20:15 and rebooted. It crashed again about 20:50 and had to be manually reset by ITaP personnel. Error messages indicate it crashed because of a memory allocation bug in the switch code. These outages caused disruption of traffic between CS subnets as well as traffic from CS to the outside.

29 April 2003 — Unscheduled Downtime