[ClusterLabs] Fencing for quorum device?

Ken Gaillot kgaillot at redhat.com
Mon Jul 18 09:43:44 EDT 2022


The quorum device cannot run resources, therefore it does not need
fencing. The point of fencing of a node is to be sure that all
resources are stopped when they can't be stopped normally.

Also, the quorum device is not a single point of failure, since one of
the nodes would have to fail as well to lose quorum. There's nothing
wrong with using a separate cluster for the quorum device to improve
resilience against multiple simultaneous failures, but it's not
necessary.

On Fri, 2022-07-15 at 09:24 +0300, Viet Nguyen wrote:
> Hi,
> 
> I just wonder that do we need to have fencing for a quorum device? I
> have 2 node cluster with one quorum device. Both 2 nodes have fencing
> agents. 
> 
> But I wonder that should i define the fencing agent for quorum device
> or not? Just in case it is laggy...
> 
> Thank you so much!
> 
> Regards,
> Viet
-- 
Ken Gaillot <kgaillot at redhat.com>



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