OIT SysCore

Our new Legato Networker server and LTO-3 tape library has been set up and has begun early testing!

The new server specs are: one Sun T1000 with 4GB of RAM and a fibre channel interface to connect it to four LTO-3 drives in a new Qualstar TLS-88264 tape library. This tape library has 131 data tapes in it with 400GB of native capacity each. In the future, this tape library can be expanded to a total of 264 tapes and eight LTO-3 or LTO-4 drives.

This new system will replace two existing and administratively-separate backup systems and AIT-based libraries operated by BSG and OIT.

Blackboard had two ~3 minutes pauses at about 1:50 AM this morning. This was neccessary
in order to apply patches to the back end servers.

As per OpenAFS Security Advisory 2007-01, setuid status has been disabled on all of the core managed servers and workstations. This has been done via a cfengine change, and the introduction of an init script which will disable setuid status on bootup.

There was a possible pause on the collaberation service today 4/11 at ~2:40PM. I do not know if this effected anyone.
The service was restarted due to "human error"

At ~11:15 on 4/12/07 Blackboard slowed down to the point where we were receiving calls about it. We determined that someone in the new media
group was running some very intensive database queries. As soon as
these were killed blackboard returned to normal operation.

I noticed the same "hanging" problem on blackboard at ~12:20 4/12

I waited on a page load for about 2 minutes. I checked the database
and the same process was active that was causing the problems before.
My guess is that the query is locking tables the do not need to be locked.
There are a large number of blocked processes during the slowdown

The blackboard backend servers were rebooted at 4/19 at 12:30 AM to finish the installation
of OS security patches. This may have caused up to a 2 minutes pause for some users.

One of our blackboard app servers hung today at ~1:12pm. Someone in the newmedia group tried to run a sort on the gradebook of a community with ~13,000 users. The server then became unresponsive.
The other server did not stop but kept working. I restarted the JVM and everything worked again.