[ClusterLabs] Antw: Fencing with a 3-node (1 for quorum only) cluster
lists at alteeve.ca
Fri Aug 5 02:37:18 EDT 2016
On 05/08/16 02:19 AM, Ulrich Windl wrote:
>>>> Dan Swartzendruber <dswartz at druber.com> schrieb am 05.08.2016 um 00:56 in
> Nachricht <32eabeb57268bed57081646c772240c8 at druber.com>:
>> I'm setting up an HA NFS server to serve up storage to a couple of
>> vsphere hosts. I have a virtual IP, and it depends on a ZFS resource
>> agent which imports or exports a pool. So far, with stonith disabled,
>> it all works perfectly. I was dubious about a 2-node solution, so I
>> created a 3rd node which runs as a virtual machine on one of the hosts.
>> All it is for is quorum. So, looking at fencing next. The primary
> I wonder what happens if the machine where the VM runs crashes (2 of 3 nodes down).
2 of 3 dead is loss of quorum. Surviving node stops offering cluster
services when it could have otherwise survived. Another (small) benefit
of a 2-node cluster.
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