[Pacemaker] Best practice for quorum nodes

[David Vossel]

----- Original Message -----
> From: "Andrew Martin" <amartin at xes-inc.com>
> To: "The Pacemaker cluster resource manager" <pacemaker at oss.clusterlabs.org>
> Sent: Friday, April 18, 2014 9:38:45 AM
> Subject: [Pacemaker] Best practice for quorum nodes
> 
> Hello,
> 
> I've read several guides about how to configure a 3-node cluster with one
> node that can't actually run the resources, but just serves as a quorum
> node. One practice for configuring this node is to put it in "standby",
> which prevents it from running resources. In my experience, this seems to
> work pretty well, however from time-to-time I see these errors appear in my
> pacemaker logs:
> Preventing <rsc> from re-starting on <host>: operation monitor failed 'not
> installed' (rc=5)
> 
> Is there a better way to designate a node as a quorum node, so that resources
> do not attempt to start or re-start on it? Perhaps a combination of setting
> it in "standby" mode and a resource constraint to prevent the resources from
> running on it? Or, is there a better way to set it up?

Pacemaker is going to probe the node for active resources regardless. If you don't want to see these errors, make sure the resource-agents and resource-agent dependent packages are installed on all nodes in the cluster.

-- Vossel

> Thanks,
> 
> Andrew
> 
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