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Wednesday, July 25, 2007

Using Collage on Dells with DRAC 5

If you're using Dell hardware that comes with the latest Dell Remote Access Controller (DRAC 5), pay close attention to required BIOS setup steps when configuring the node for use with Collage:
Application Node Setup: Dell
If you omit this BIOS setup step, the result is that Collage discovers the DRAC 5 card, but then fails to put the nodes in the free pool. That's because there's a console redirect setting in the BIOS that Collage requires. (It needs to get some data from the node via the serial communication port.) As documented, the serial communication setting needs to be set as follows:
Serial Communication..........On with Console Redirection via COM2
Be sure not to overlook this step when you're setting up Dell application nodes that use DRAC5.

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Friday, July 13, 2007

Modifying the hosts file on the control nodes

I'm back after a little 4th of July get-away. Upon my return, ran across this advice regarding use of the hosts file on the control nodes:

Turns out, there's a little gotcha in the way Collage copies hosts file info around. So, for now, if you need to modify the hosts file on the control node(s), do so in the /cassatt/etc/hosts file rather than in /etc/hosts. The reason is, when Collage is restarted, the /cassatt/etc/hosts file is copied to /etc/hosts. This will overwrite any modifications you might have made directly in the /etc/hosts file.

This gotcha is being fixed and the update will be released as soon as possible.