[Pacemaker] resource-stickiness not working?

[Scott Donoho]

We are running the following versions:

crmsh 1.2.6
pacemaker 1.1.10
corosync 1.4.1



On 11/14/14 9:28 AM, "Dejan Muhamedagic" <dejanmm at fastmail.fm> wrote:

>Hi,
>
>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?
>
>Thanks,
>
>Dejan
>
>> 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"
>> 
>> 
>> 
>> 
>
>> _______________________________________________
>> Pacemaker mailing list: Pacemaker at oss.clusterlabs.org
>> http://oss.clusterlabs.org/mailman/listinfo/pacemaker
>> 
>> Project Home: http://www.clusterlabs.org
>> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
>> Bugs: http://bugs.clusterlabs.org
>
>
>_______________________________________________
>Pacemaker mailing list: Pacemaker at oss.clusterlabs.org
>http://oss.clusterlabs.org/mailman/listinfo/pacemaker
>
>Project Home: http://www.clusterlabs.org
>Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
>Bugs: http://bugs.clusterlabs.org