[Pacemaker] node1 fencing itself after node2 being fenced

[Nikita Staroverov]

> Hi All,
>
> First of all, thanks for the brilliant documentation at clusterlabs 
> and the alteeva.ca tutorials! They helped me out a lot.
>
> I am relatively new to pacemaker but come from a Solaris background 
> with cluster experience, I am now trying to get on board with pacemaker
>
> I have setup a 2 node cluster with a shared lun using pacemaker, cman, 
> dlm, clvmd and gfs. I have configured 2 stonith devices each to fence 
> either node.
>
> The issue I have is that when i test an unclean shutdown of the 2nd 
> node, pacemaker goes ahead and fences the second node, but clvmd then 
> goes in to a failed state on node 1 and then it fences itself (shuts 
> down node 1).
>
> I suspect it has something to do with me setting the on-fail=fence for 
> the dlm/clvmd services/RA's. DLM appears to be fine, but clvmd is the 
> one that goes in to a failed state. I suspect I have an issue with 
> timeouts here, but, being new to pacemaker I cannot see where, I am 
> hoping a new pair of eyes can see where I am going wrong here.
>
> I am running, CentOS 6.5 in vmware, using the fence_vmware_soap 
> stonith agents. Pacemaker is at version 1.1.10-14, CMAN is at version 
> 3.0.12.1-59.
>
> I used the following tutorial to assist me in setting up 
> dlm/clmvd/gfs2 on CentOS 6.5 (if it helps in the debugging)
>
> https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/7-Beta/html/Global_File_System_2/ch-clustsetup-GFS2.html 
>
>
> Any assistance, tips, tricks, comments, criticisms are all welcome
>
> I have attached my cluster.conf if required, some node name 
> obfuscation has been done. If you need any additional info, please 
> dont hesitate to ask.
>
> Thanks
>
Your setup is completely wrong, sorry. You must use RHEL6 documentation 
not RHEL7.
in short, you should create cman cluster according to RHEL6 docs, but 
use pacemaker instead of rgmanager and fence_pcmk as fence agent for cman.

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