Computer Systems Status

3 February 2026 — Unscheduled Downtime
Undergraduate compute server, data.cs.purdue.edu, became unresponsive at approximately 7:41p. IT staff recovered the machine, and it became available again at 7:45p.
31 January 2026 — Software Update
On Saturday morning the College of Science RADIUS server will be switched from the legacy backend authentication server to the current backend authentication server. The RADIUS server is used by CS Linux servers for SSH 2-factor login authentication. There should be no change for users who use their password and 2-factor authentication as described in the SSH banner
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-                  Password-only logins have been disabled                 *
*   Use of Duo Mobile, a hardware token, or an SSH key pair now required   -
-   Duo Mobile: Enter your password followed by a comma followed by PUSH   *
*  Token: Enter your password followed by a comma followed by 6-digit code -
-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
The only behavior change will be for those individuals still using the legacy BoilerKey PIN in place of their password. Note, this is not the 6-digit one-time passcode generated by tokens or the Duo Mobile app. This is a long-deprecated feature of BoilerKey (legacy 2-factor). It was supported as long as the legacy authentication servers remained in service, but is now being phased out completely because the legacy server certificates are expiring.
10 January 2026 — Scheduled Downtime
Due to new requirements from Purdue System Security, all IT-managed Linux systems in CS will be rebooted beginning at 6AM on Saturday, 11 October 2025, starting with the main departmental fileservers. The remaining servers and workstations will be rebooted later in the day once the main servers are back up.
22 October 2025 — Scheduled Downtime
antor, bors, data, legion, madoc, pendragon, print, pythia, queue, and riker will be rebooted beginning at 6AM on Wednesday, 22 October 2025 to fix a kernel lockup bug.
11 October 2025 — Scheduled Downtime
Due to new requirements from Purdue System Security, all IT-managed Linux systems in CS will be rebooted beginning at 6AM on Saturday, 11 October 2025, starting with the main departmental fileservers. The remaining servers and workstations will be rebooted later in the day once the main servers are back up.
29 August 2025 — Scheduled Downtime
The undgraduate compute server (data.cs) started exhibiting an issue mounting user home directories the morning of 28-August-2025. This problem has prevented some users from successfully logging in to data.cs.

data.cs will be rebooted at 05:45 29-August-2025 Please save all work and logout before then. Any user logged in, will be logged out without warning.
19 August 2025 — Unscheduled Downtime
Due to a network change that was supposed to be non-disruptive, we lost network connectivity for the department authentication servers from about 13:45 to about 14:45. This caused disruption in services for most department Linux system. Once the problem was corrected, the services returned to normal.

Any residual problems should be reported to ScienceHelp@purdue.edu
Archived entries
Last Updated: Jul 11, 2025 10:52 AM