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IRIS

Instructional & Research Information Systems

LDAP Server Issues

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The departmental mail server (imap.eecs) and LDAP servers should now be working mostly properly. However, there are a few unresolved technical problems. You may encounter SSL certificate validation errors on our LDAP server (ldap.eecs and ldap.cs). As such, it may not be completely reliable for the remainder of today, and possibly across this weekend as well. We are actively working on solving the underlying problem, and will post an update as soon as we can.

No incoming or outgoing email was lost.

Technical background: Earlier today, the SSL certificates on our LDAP servers expired. This caused the LDAP daemon on ldap.eecs to hang, and refuse new connections. This cacscaded into a failure of part of IMAP system, and the IMAP daemon on imap.eecs similarly hung. We’ve managed to restart the daemons on both servers. Unfortunately, we’re running into a problem on the LDAP server, and are unable to install new, un-expired SSL certificates. As a result, we’re not completely confident that our LDAP servers won’t crash again, and take the IMAP server with it. Again, we’re continuously working on trying to fix this.
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Login to edit Whitelists/Blacklists on SPAM appliances (bc1/2) broken

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The login to the Spam appliances is currently broken. This is apparently due to a software upgrade. This problem has been reported to the vendor.

Users will be unable to add, remove or change their e-mail Whitelists/Blacklists.

This does not affect operation of any current e-mail Whitelists/Blacklists.
[Read more…] about Login to edit Whitelists/Blacklists on SPAM appliances (bc1/2) broken

IRIS Website Offline Tonight for Server Migration

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The IRIS website will be offline for about 30 minutes this evening (Wed Feb 06) in order to redeploy parts of the site using the [Mongrel](http://mongrel.rubyforge.org) HTTP server.

Currently, the portions of the site written in Ruby are being served using fcgid, which isn’t the most stable option. The switch to Mongrel will bring more stability to the site and be faster to boot!
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Matlab License Renewed (until 2/2/09)

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Due to a misunderstanding, IST thought that there was a 30 days grace period built into the license file, and so they thought the license file wouldn’t expire until 03/01/08. But as it turned out, that wasn’t true.

As a result, the matlab license server was down on 02/02/08 and 02/03/08.

The matlab license file has been renewed to 02/01/09.

We apologize for any inconvenience for the matlab downtime.

Resolved as of 2008-02-04 12:16:00

Network switch error detected

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We have detected an error on the network switch that serves the EECS data center. While we are not currently detecting any impact on network performance, experience has shown that we will need to replace a 10Gig Ethernet blade in that switch. To minimize disruption, this board is now scheduled to be replaced between 07:00-07:30 tomorrow morning. If we detect any impact on service before then, the board will be replaced immediately without warning. We regret any inconveniences this may cause.

Mail delays due to last night’s power outage.

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As a result of last night’s power outage, there were some mail delays (and some senders may have received 4-hour notices). Obviously mail has been queued up on the external (and some internal) systems, which caused a spike after the services have been restored. As of now there are still some delays, but things are getting better.

One of the spam appliances had an internal failure last night, which caused it to not be able to properly scan email and deliver it. As a result, there were about 54K messages queued up. It is currently going through the queue and delivering those messages.
[Read more…] about Mail delays due to last night’s power outage.

EECS Network Outage

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From some time late last night until about 11:30 this morning, much of the EECS network was down due to a major power failure in the Soda Hall Network Center.

Two circuit breakers feeding both the power distribution system and the A/C tripped causing the outage. IDSG staff responded to the outage as did a UCB electrician who were able to restore power The electrician is investigating the cause but we don’t yet know what the cause was.

Thanks to many EECS staff who helped during this outage to get things going again.

Fred Archibald

Resolved as of 2008-01-27 11:00:00

Airbears and AirbearsBeyond Disruption

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The “AirBears” and “AirBearsBeyond” wireless networks were unexpectedly offline from approximately 5:45p.m. to 10:00p.m. on Thursday, Jan 24.

There was an issue with the access manager and clients could not get DHCP leases. We are still investigating with [IST](http://ist.berkeley.edu) to determine the cause of the outage.