On 08.04.2021 09:26, d tbsky wrote: > Reid Wahl <nw...@redhat.com> >> I don't think we do require fencing for single-node clusters. (Anyone at Red >> Hat, feel free to comment.) I vaguely recall an internal mailing list or IRC >> conversation where we discussed this months ago, but I can't find it now. >> I've also checked our support policies documentation, and it's not mentioned >> in the "cluster size" doc or the "fencing" doc. > > since the cluster is 100% alive or 100% dead with single node, I > think fencing/quorum is not required. I am just curious what is the > usage case. since RedHat supports it, it must be useful in real > scenario.
I do not know what "disaster recovery" configuration you have in mind, but if you intend to use geo clustering fencing can speed up fail-over so it is at least useful. Even in single node cluster if resource failed to stop you are stuck - you cannot actually do anything from that point without manual intervention. Depending on configuration and requirements rebooting node may be considered as an attempt to automatically "reset" cluster state. _______________________________________________ Manage your subscription: https://lists.clusterlabs.org/mailman/listinfo/users ClusterLabs home: https://www.clusterlabs.org/
