There is an LDAP problem that is affecting some services including sending mail through gateway.eecs . Staff are working to correct the problem.
[Read more…] about LDAP problem
Storage Area Network Maintenance
There will be some minor Storage Area Network (SAN) maintenance tonight at 5pm. Services are not expected to go down, but there could be occasional minor delays or very short outages.
[Read more…] about Storage Area Network Maintenance
IMAP server temporary Outage
Recently there was an outage on the IMAP server, the administrators notified of a glitch of some kind which had the IMAP zone rebooted and caused an outage for a few minutes. It is now back up and running.
[Read more…] about IMAP server temporary Outage
Network Maintenance for EECS network May 27th
We will sync network firmware and also upgrade the BootROM for one router in Soda 2nd floor (soda-server8810)on next Wed May 27,2009. We expect that there might be brief network outages between 6:00AM to 7:45AM.
This router serves several department servers and this will affect users who use network at that time. We regret any inconvenience this may cause. Please make your plans accordingly.
[Read more…] about Network Maintenance for EECS network May 27th
Department website, mailing lists, jabber offline
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.
Staff are investigating why this occurred and how to prevent it from happening again.
Resolved as of 2009-05-22 09:30:00
Network & Infrastructure Failure
There was a software failure of the switch that serves many EECS services in Soda Hall this evening. That switch was rebooted restoring network connectivity to those servers but there was also a separate fiber channel failure involving home.eecs and project.eecs which both crashed. Work is ongoing to restore those services.
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AirBears Outage Soda/Cory/BWRC/HMMB/Sibley
We have received a report from IST staff that the AirBears access manager that serves Soda, Cory, BWRC, HMMB and Sibley is currently down. IST staff are investigating the problem.
AirBears Wireless service is effectively down. We regret the inconvenience. All EECS WLANs are still up.
[Read more…] about AirBears Outage Soda/Cory/BWRC/HMMB/Sibley
Sutardja Dai Hall switch updates
We’ve experienced unexpected blade reboots and multicast errors on some of the new switches in Sutardja Dai Hall. Per the vendor’s suggestion, I’ll be upgrading these to a newer software release.
Subnets Affected:
128.32.156.0/24, 128.32.247.0/25, 169.229.14.0/24, 169.229.222.0/23
The code revisions are close, so we expect to be able to perform a hitless upgrade; there should be no perceivable disruption. Nevertheless, I’m scheduling a 45 minute maintenance window (1715-1800) in case of problems.
[Read more…] about Sutardja Dai Hall switch updates
IMAP Service is down
There was just now a temporary outage of the imap service .
The service was restarted and all appears well now.
[Read more…] about IMAP Service is down
network maintenance for BWRC network
We will upgrade the new image code for two BWRC switches on this Thursday May 14,2009. There will be brief network outages from 7:00AM to 7:10AM.
This will affect users who use wired connection in the BWRC lab and some machines that are connected to summit226-1 switch. Wireless in BWRC will not be affected. This upgrade should take less than 2 mins.
We regret any inconvenience this may cause. Please make your plans accordingly.
This will affect users who use wired connection in the BWRC lab and some machines that are connected to summit226-1 switch. Wireless in BWRC will not be affected. This upgrade should take less than 2 mins.
We regret any inconvenience this may cause. Please make your plans accordingly.
Resolved as of 2009-05-14 07:03:00