webctbackup

John made a good point… While telling Blackboard about this is pointless, the community at large ought to be aware of another undocumented workspace issue. I found an 8GB .bak in the /u01/app/nodeA/weblogic81/webctbackup on the active JMS node. Taking out user accessible nodes is okay in my book as with 18-20 of them in our clusters, we can lose one and no client would ever know. Mail, chat, learning context administration and other services in CE/Vista fail without a functional JMS node.

An administrator did a template reassignment with “Force archive before template reassignment” set to true. For some reason the file was placed on the JMS node. It should have been deleted. However, it was not. I caught it in time as another large file was dropped within 10 minutes of me deleting the first. I only caught it time because I was at my desk working (not in meetings, at home, or asleep).

This came within one GB of completely filling up the file system. We do not have huge hard drives on these nodes, just 3 times the size we need except for this. Nor do we allow the nodes accrue a ton of logs or junk.

Maybe this is something Blackboard has resolved this for future versions like Vista 4 or 8. Maybe one day we will have official or unofficial documentation about this kind of stuff.

The answers I anticipate from Blackboard:

  1. This is functioning as designed. I bet composing the archive requires something from the JMS node, so it must reside there. The JVM is too small as is /var/tmp, so the file system is the best place.
  2. Use a bigger hard drive.
  3. Set “Force archive before template reassignment” to false.

Even if Blackboard agrees this is bad, then it might get fixed on Vista 8. Certainly it will not get fixed in the officially supported  Vista 3.
🙁

If you want to confirm if you have the potential for this problem, then you should have a $NODENAME/weblogic81/webctbackup or a $NODENAME/weblogic92/webctbackup directory. We only have them on all four JMS nodes, but have have seen them on four (out of 76) other nodes. The other 72 nodes lack this directory. While you are at it, make sure you know about the other undocumented work spaces I have mentioned.
🙂

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