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IRIS

Instructional & Research Information Systems

Department Webservice

Department Webservice

EECS Web Servers Maintenance, Aug 11, 9pm

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New versions of Apache and mod_ssl will be installed tonight, August 11, 2009, on the following servers:

* www.eecs.berkeley.edu
* www.cs.berkeley.edu
* lists.eecs.berkeley.edu
* iris.eecs.berkeley.edu


This will require a quick restart of each web server. Brief outages (less than 5 minutes) will be seen between 9:00pm and 9:30pm.

Resolved as of 2009-08-11 22:00:00

Department website, mailing lists, jabber offline

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The department’s web server (www.eecs & www.cs), mailing list server (lists.eecs), and jabber server (jabber.eecs) all run on a Xen virtual cluster. After last night’s network failure was resolved around 2:30am, the Xen cluster failed to recover gracefully. These services had to be manually restarted this morning. Web and mailing list services were restored around 9:20am, and jabber was restored around 9:45am.

Staff are investigating why this occurred and how to prevent it from happening again.

Resolved as of 2009-05-22 09:30:00

Brief Downtime for Multiple IRIS Services

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The EECS Department website, FTP server, Windows Terminal Server (winterm), the IRIS website, Jabber, and Sympa (mailing list) services will all experience brief periods of unavailability beginning at 7:00am on Wednesday, February 25, 2009, possibly lasting until 8:00am.

The servers hosting these services will be changing IP addresses during this time as their current subnet (128.32.139.0/24) is being repurposed. DNS will be updated at 7:00am as well, so you shouldn’t need to make any changes to client applications unless you’ve been accessing any of these services directly by their IP rather than by their DNS name.
[Read more…] about Brief Downtime for Multiple IRIS Services

Multiple Services Offline for About Eight Hours

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The EECS website, FTP server, Jabber server and Sympa mailing-list server were offline for about eight hours on Sunday, Dec 28, 2008 beginning at 2:48 p.m.

The virtualization cluster that hosts these services experienced a failure when the network switch that supplies its management network was rebooted during the [scheduled network maintenance](https://iris.eecs.berkeley.edu/news/2246-eecs-network-maintenance-sunday-dec). We didn’t notice the failure until this evening, but were able to restore service quickly once we realized what was wrong.

I apologize for the length of the downtime and am planning on working to make the cluster more robust and improve our notification and monitoring so that any future issues will be noticed more quickly.

Resolved as of 2008-12-28 22:32:00

EECS Website, FTP, Sympa and Jabber Offline Briefly for Maintenance

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The EECS website, EECS FTP server, Sympa mailing-lists and Jabber (IM) service will all experience brief outages on Thursday, Dec 18, 2008 beginning at 10:00p.m. due to system maintenance.

These services won’t all be offline simultaneously, but each will experience a brief (less than 5 minutes) outage while the server hosting it is rebooted to apply operating system patches.
[Read more…] about EECS Website, FTP, Sympa and Jabber Offline Briefly for Maintenance

Brief Interruption of Some IRIS Services

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The department website, Jabber and Sympa services were briefly interrupted this morning due to an issue with the cluster that provides them.

Each service was unavailable for a few minutes between 10:00 a.m. and 10:30 a.m. as the server cluster they run on was restarted. Restarting the cluster was necessary to alleviate a deadlock in the clustered file system used by the services.

My apologies for any inconvenience this has caused, I’m looking into how to avoid this situation in the future and bring more stability to the cluster.

Resolved as of 2008-10-28 10:30:00