[ClusterLabs] Resources restart when a node joins in

Citron Vert citron_vert at hotmail.com
Wed Aug 26 09:24:04 EDT 2020

I am contacting you because I have a problem with my cluster and I 
cannot find (nor understand) any information that can help me.

I have a 2 nodes cluster (pacemaker, corosync, pcs) installed on CentOS 
7 with a set of configuration.
Everything seems to works fine, but here is what happens:

  * Node1 and Node2 are running well with Node1 as primary
  * I reboot Node2 wich is passive (no changes on Node1)
  * Node2 comes back in the cluster as passive
  * corosync logs shows resources getting started then stopped on Node2
  * "crm_mon" command shows some ressources on Node1 getting restarted

I don't understand how it should work.
If a node comes back, and becomes passive (since Node1 is running 
primary), there is no reason for the resources to be started then 
stopped on the new passive node ?

One of my resources becomes unstable because it gets started and then 
stoped too quickly on Node2, wich seems to make it restart on Node1 
without a failover.

I tried several things and solution proposed by different sites and 
forums but without success.

Is there a way so that the node, which joins the cluster as passive, 
does not start its own resources ?

thanks in advance

Here are some information just in case :

$ rpm -qa | grep -E "corosync|pacemaker|pcs"

         <nvpair id="cib-bootstrap-options-stonith-enabled" name="stonith-enabled" value="false"/>
         <nvpair id="cib-bootstrap-options-no-quorum-policy" name="no-quorum-policy" value="ignore"/>
         <nvpair id="cib-bootstrap-options-dc-deadtime" name="dc-deadtime" value="120s"/>
         <nvpair id="cib-bootstrap-options-have-watchdog" name="have-watchdog" value="false"/>
         <nvpair id="cib-bootstrap-options-dc-version" name="dc-version" value="1.1.21-4.el7-f14e36fd43"/>
         <nvpair id="cib-bootstrap-options-cluster-infrastructure" name="cluster-infrastructure" value="corosync"/>
         <nvpair id="cib-bootstrap-options-cluster-name" name="cluster-name" value="CLUSTER"/>
         <nvpair id="cib-bootstrap-options-last-lrm-refresh" name="last-lrm-refresh" value="1598446314"/>
         <nvpair id="cib-bootstrap-options-default-resource-stickiness" name="default-resource-stickiness" value="0"/>

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