[Pacemaker] resource-stickiness not working?

Dejan Muhamedagic dejanmm at fastmail.fm
Fri Nov 14 10:28:47 EST 2014


On Thu, Nov 13, 2014 at 06:52:29PM +0000, Scott Donoho wrote:
> Here is a simple Active/Passive configuration with a single Dummy resource (see end of message). The resource-stickiness default is set to 100. I was assuming that this would be enough to keep the Dummy resource on the active node as long as the active node stays healthy. However, stickiness is not working as I expected in the following scenario:
> 1) The node testnode1, which is running the Dummy resource, reboots or crashes
> 2) Dummy resource fails to node testnode2
> 3) testnode1 comes back up after reboot or crash
> 4) Dummy resource fails back to testnode1
> I don't want the resource  to failback to the original node in step 4. That is why resource-stickiness is set to 100. The only way I can get the resource to not to fail back is to set resource-stickiness to INFINITY. Is this the correct behavior of resource-stickiness? What am I missing? This is not what I understand from the documentation from clusterlabs.org. BTW, after reading various postings on fail back issues, I played with setting on-fail to standby, but that doesn't seem to help either. Any help is appreciated!

You can try crm resource scores. But note that below you have a
location preference of infinity, hence stickiness has to match
that score.

>    Scott
> node testnode1
> node testnode2
> primitive dummy ocf:heartbeat:Dummy \
>         op start timeout="180s" interval="0" \
>         op stop timeout="180s" interval="0" \
>         op monitor interval="60s" timeout="60s" migration-threshold="5"
> xml <rsc_location id="cli-prefer-dummy" rsc="dummy" role="Started" node="testnode2" score="INFINITY"/>

Looks like here crmsh got confused by the role set to Started.
Which crmsh version do you run?



> property $id="cib-bootstrap-options" \
>         dc-version="1.1.10-14.el6-368c726" \
>         cluster-infrastructure="classic openais (with plugin)" \
>         expected-quorum-votes="2" \
>         stonith-enabled="false" \
>         stonith-action="reboot" \
>         no-quorum-policy="ignore" \
>         last-lrm-refresh="1413378119"
> rsc_defaults $id="rsc-options" \
>         resource-stickiness="100" \
>         migration-threshold="5"

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