We had a brief partial outage to EECS networks this morning between 7:15-7:20 due to an unplanned device reboot during a troubleshooting procedure. All networks should be back online at this time. Please contact us at help@eecs.berkeley.edu if you notice any issues.
Resolved Incidents
June IRIS Server Patching
Microsoft will release their patches for the month on Tuesday, June 10th, 2025. Various IRIS Windows and Linux servers will be patched and rebooted Tuesday or Wednesday.
PRINT, WINTERM and WDS will automatically patch and reboot Wednesday, June 11th, at 3:00am. WINTERM may be unavailable until 10:00am Wednesday, depending on additional software updates.
Linux servers lists.eecs, iris2.eecs (for access to the network and roster databases), and login.eecs/login-mfa.eecs will be patched and rebooted Wednesday night. DNS servers cronus, themis, and rhea may also be briefly unavailable while rebooting at approximately 8:00pm Tuesday.
On Thursday, June 12th, the departmental DHCP server is scheduled for downtime from about 9am to 9:30am (actual downtime is expected to be shorter than scheduled).
[Read more…] about June IRIS Server PatchingCory 165 Network Maintenance, Wed. June 4th 10AM-12PM
On Wednesday, June 4th, between 10AM and 12PM, we will be replacing the Ethernet switches in the Cory 165 server room. The current switches have reached the end of their useful life, and with the newer hardware we can begin to provide some limited 10G connectivity.
All systems in Cory 165 will experience a brief interruption in network connectivity, typically less than one minute, as connections are moved to the new switches. No action should be necessary, but a reboot may help if you notice any issues afterwards.
Update 6/4 11:32: This work has been completed. Please contact us at help@eecs.berkeley.edu if you notice any ongoing issues.
NetApp Fileserver Maintenance, Saturday May 24, 2025
We are scheduling a NetApp ONTAP upgrade, to apply a necessary update to our NetApp fileserver, from 8am to 12pm on Saturday, May 24, 2025.
All Home directories and Project shares (CIFS/SMB and NFS) may experience disconnection during the update that may cause data loss on active, open files. Please close your open files and save them before Saturday morning. Services (e.g. webservice) that depend on this storage will also be temporarily down or unresponsive.
When maintenance is completed, NFS clients should automatically resume normal operation, but a reboot should help if they don’t. CIFS clients (such as Windows and MacOS) may need to remount filesystems, or simply be rebooted.
[Read more…] about NetApp Fileserver Maintenance, Saturday May 24, 2025EECS Mailing Lists emergency maintenance May 15, 7pm
The EECS Mailing List server lists.eecs.berkeley.edu is experiencing some problems after recent patching. At this time, scheduled tasks such as syncing list membership from external sources, sending reminder emails, or building archives, are not working. This server will be taken down tonight, Thursday May 15, at 7pm in order to try to diagnose the problem or revert back to a pre-patched version. Total downtime should be less than 2 hours. During this time, any mail sent to a list on lists.eecs.berkeley.edu or lists.simons.berkeley.edu will be delayed but no mail should be lost.
Please send any questions to help@eecs.
[Read more…] about EECS Mailing Lists emergency maintenance May 15, 7pmMay IRIS Server Patching
Microsoft will release their patches for the month on Tuesday, May 13th, 2025. Various IRIS Windows and Linux servers will be patched and rebooted Tuesday or Wednesday.
PRINT, WINTERM and WDS will automatically patch and reboot Wednesday, May 14th, at 3:00am. WINTERM may be unavailable until 10:00am Wednesday, depending on additional software updates.
Linux servers lists.eecs, iris2.eecs (for access to the network and roster databases), and login.eecs/login-mfa.eecs will be patched and rebooted Wednesday night. DNS servers cronus, themis, and rhea may also be briefly unavailable while rebooting at approximately 8:00pm Tuesday.
On Thursday, May 15th, the departmental DHCP server is scheduled for downtime from about 9am to 9:30am (actual downtime is expected to be shorter than scheduled).
[Read more…] about May IRIS Server PatchingApril IRIS Server Patching
Microsoft will release their patches for the month on Tuesday, April 8th, 2025. Various IRIS Windows and Linux servers will be patched and rebooted Tuesday or Wednesday.
PRINT, WINTERM and WDS will automatically patch and reboot Wednesday, April 9th, at 3:00am. WINTERM may be unavailable until 10:00am Wednesday, depending on additional software updates.
Linux servers lists.eecs, iris2.eecs (for access to the network and roster databases), and login.eecs/login-mfa.eecs will be patched and rebooted Wednesday night. DNS servers cronus, themis, and rhea may also be briefly unavailable while rebooting at approximately 8:00pm Tuesday.
On Wednesday, April 9th, the departmental DHCP server is scheduled for downtime from 10pm to 10:30pm (actual downtime is expected to be shorter than scheduled).
[Read more…] about April IRIS Server PatchingEECS Network Maintenance, Wed. Mar. 26
We will be performing various network maintenance activities throughout the day on Wednesday, March 26th during the previously announced Soda Hall 2nd floor power shutdown. We expect that most of our work will not affect wired and wi-fi network service, however there will be some brief outages as described below.
Between 12PM and 1PM on the 26th, the areas listed below will experience at least one interruption to network connectivity. We expect most of these interruptions to be under one minute in length, but some wi-fi service may be unavailable for 5-10 minutes.
- BWRC (wired and wi-fi)
- BiD in HMMB (EECS wired)
- Soda Hall all floors (wi-fi)
- Soda Hall 4F north side, 5F-7F (wired and wi-fi)
Update 15:44: This work has been completed and all networks are online. Please contact us at help@eecs.berkeley.edu if you notice any issues.
Soda Hall 2nd Floor Power Outage on March 26, 2025
Following up on the work done during the June 13th Soda Hall power outage, we have a similar outage for the second floor of Soda Hall scheduled during Spring Break, to complete (hopefully!) a circuit breaker replacement. As with the last outage, electrical power to the Soda Hall second floor will be down during much of the day on Wednesday, March 26, 2025. Critical systems will be down from about 6am until perhaps 5pm.
Of primary note is that the department NetApp fileservers will be down, so any systems that depend on HOME or PROJECT storage will be shutdown or nonfunctional. Services that will be unavailable during the maintenance period include: department webservice (including people.eecs, www2.eecs and all other IRIS-hosted web sites), IRIS account & network forms, login servers (login.eecs, login-mfa.eecs, winterm.eecs), print server print.eecs, and outgoing SMTP server smtp.eecs.
Any systems that remain powered-on but make use of HOME or PROJECT storage may become unresponsive during this time. Rebooting after maintenance is completed is usually recommended.
Services that will remain online and available include: DHCP, EECS Active Directory, EECS LDAP, wired networking, DNS (cronus.eecs), and maillists (lists.eecs), and the main department website eecs.berkeley.edu.
[Read more…] about Soda Hall 2nd Floor Power Outage on March 26, 2025March IRIS Server Patching
Microsoft will release their patches for the month on Tuesday, March 11th, 2025. Various IRIS Windows and Linux servers will be patched and rebooted Tuesday or Wednesday.
PRINT, WINTERM and WDS will automatically patch and reboot Wednesday, March 12th, at 3:00am. WINTERM may be unavailable until 10:00am Wednesday, depending on additional software updates.
Linux servers lists.eecs, iris2.eecs (for access to the network and roster databases), and login.eecs/login-mfa.eecs will be patched and rebooted Wednesday night. DNS servers cronus, themis, and rhea may also be briefly unavailable while rebooting at approximately 8:00pm Tuesday.
On Wednesday, March 12th, the departmental DHCP server is scheduled for downtime from 10pm to 10:30pm (actual downtime is expected to be shorter than scheduled).
[Read more…] about March IRIS Server Patching