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
Well, you can always make a single-node cluster with the quorum device's host
and setup systemd resource to keep the service up and running.With SBD, that
single-node cluster will suicide in case the machine ends in a unresponsive
state.
Best Regards,Strahil Nikolov
On Fri, Jul 15, 2022
On 15.07.2022 09:24, 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?
You cannot.
Related my experiences, i would say absolutely yes. Fecing is needed to
keep integrity of the cluster if something goes suddenly and unexpected
wrong, even in a 2nodes+qdevice setup. I never seen a cluster without
fecing working properly.
On Fri, 15 Jul 2022, 15:29 Viet Nguyen, wrote:
> Hi,
>
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
