Friday, February 20, 2009

Interesting Clustering Option

I've been playing with clustering, and found that there was a small issue with my original cluster.conf. The issue of concern was the use of manual fencing, as there are "some" distributions for which this causes problems. The trick is to make it work without the addition of outside hardware.

Yet, there is an option for VM fencing which is fun, because you can't hook a VM to a remote power switch. What you could do, is link the fencing daemon to the hypervisor, and accomplish the same thing. That's not what VM fencing does.

It does nothing. Just like manual... but its uniformily integrated. Wierd, but then that's the nature of all these hacks.
  <fence_device agent="fence_xvm" name="fence_dev"/>

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