[ClusterLabs] Fencing with a 3-node (1 for quorum only) cluster
lists at alteeve.ca
Sat Aug 6 19:46:03 EDT 2016
On 06/08/16 07:33 PM, Dan Swartzendruber wrote:
> Okay, I almost have this all working. fence_ipmilan for the supermicro
> host. Had to specify lanplus for it to work. fence_drac5 for the R905.
> That was failing to complete due to timeout. Found a couple of helpful
> posts that recommended increase the retry count to 3 and the timeout to
> 60. That worked also. The only problem now, is that it takes well over
> a minute to complete the fencing operation. In that interim, the fenced
> host shows as UNCLEAN (offline), and because the fencing operation
> hasn't completed, the other node has to wait to import the pool and
> share out the filesystem. This causes the vsphere hosts to declare the
> NFS datastore down. I hadn't gotten exact timing, but I think the
> fencing operation took a little over a minute. I'm wondering if I could
> change the timeout to a smaller value, but increase the retries? Like
> back to the default 20 second timeout, but change retries from 1 to 5?
Did you try the fence_ipmilan against the DRAC? It *should* work. Would
be interesting to see if it had the same issue. Can you check the DRAC's
host's power state using ipmitool directly without delay?
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