[ClusterLabs] Antw: Fencing with a 3-node (1 for quorum only) cluster
Ulrich.Windl at rz.uni-regensburg.de
Fri Aug 5 02:19:42 EDT 2016
>>> 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).
> server is a poweredge R905, which has DRAC for fencing. The backup
> storage node is a Supermicro X9-SCL-F (with IPMI). So I would be using
> the DRAC agent for the former and the ipmilan for the latter? I was
> reading about location constraints, where you tell each instance of the
> fencing agent not to run on the node that would be getting fenced. So,
> my first thought was to configure the drac agent and tell it not to
> fence node 1, and configure the ipmilan agent and tell it not to fence
> node 2. The thing is, there is no agent available for the quorum node.
> Would it make more sense instead to tell the drac agent to only run on
> node 2, and the ipmilan agent to only run on node 1? Thanks!
> Users mailing list: Users at clusterlabs.org
> Project Home: http://www.clusterlabs.org
> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
> Bugs: http://bugs.clusterlabs.org
More information about the Users