[ClusterLabs] Problem with stonith and starting services

Cesar Hernandez c.hernandez at medlabmg.com
Mon Jul 3 07:34:52 UTC 2017


Hi

I have installed a pacemaker cluster with two nodes. The same type of installation has done before many times and the following error never appeared before. The situation is the following:

both nodes running cluster services
stop pacemaker&corosync on node 1
stop pacemaker&corosync on node 2
start corosync&pacemaker on node 1

Then node 1 starts, it sees node2 down, and it fences it, as it was expected. But the problem comes when node 2 is rebooted and starts cluster services: sometimes, it starts the corosync service but the pacemaker service starts and then stops. The syslog shows the following error in these cases:

Jul  3 09:07:04 node2 pacemakerd[597]:  warning: The crmd process (608) can no longer be respawned, shutting the cluster down.
Jul  3 09:07:04 node2 pacemakerd[597]:   notice: Shutting down Pacemaker

Previous messages show some warning messages that I'm not sure they are related with the shutdown:


Jul  3 09:07:04 node2 stonith-ng[604]:   notice: Operation reboot of node2 by node1 for crmd.2413 at node1.608d8118: OK
Jul  3 09:07:04 node2 crmd[608]:     crit: We were allegedly just fenced by node1 for node1!
Jul  3 09:07:04 node2 corosync[585]:   [pcmk  ] info: pcmk_ipc_exit: Client crmd (conn=0x1471800, async-conn=0x1471800) left


On node1, all resources become unrunnable and it stays there forever until I start manually pacemaker service on node2. 
As I said, same type of installation has done before on other servers and never happened this. The only difference is that in previous installations I configured corosync with multicast and now I have configured with unicast (my current network environment doesn't allow multicast) but I think it's not related with that behaviour

Cluster software versions:
corosync-1.4.8
crmsh-2.1.5
libqb-0.17.2
Pacemaker-1.1.14
resource-agents-3.9.6



Can you help me?

Thanks

Cesar






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