[ClusterLabs] resource location preference vs utilization

wferi at niif.hu wferi at niif.hu
Mon Jul 15 12:41:56 EDT 2019


In a mostly symmetrical cluster I've got a couple of resources which
should only ever run on a subset of the nodes if possible.  However,
utilization constraints seem to prevent optimal resource allocation in
some cases: Pacemaker does not migrate other resources to make room for
the picky resources on their preferred nodes.  Is there a way around
this?  The score differences are way above the resource stickiness, and
as soon as I manually move enough indifferent resources away from the
distinguished nodes, Pacemaker indeed migrates the picky resources over
to them.  Can I configure it to also make room automatically by moving
other resources as necessary, making this process fully automatic?

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