[Pacemaker] Breaking pacemaker

Dominik Klein dk at in-telegence.net
Tue Feb 16 08:38:44 EST 2010

jimbob palmer wrote:
> Hello,
> I have a cluster that is all working perfectly. Time to break it.
> This is a two node master/slave cluster with drbd. Failover between
> the nodes works backwards and forwards. Everything is happier than a
> well fed cat.
> I wanted to see what would happen if the drbd device couldn't be
> mounted, so on the slave node I deleted the mountpoint, then failed
> over.
> Oh dear. I broke things so badly that I had to fail back, shutdown
> corosync on the slave, delete the config files, and start it again.
> Since that's not the right way to do it, I thought I should ask the
> list for the right way.

A "cleanup" for the resource/node pair should have done it.


> Here are the errors I get on the slave when the fs_BLAH resource tries
> to start with a missing mountpoint:
> Failed actions:
>  fs_BLAH_start_0 (node=X, call=X, status=complete): not installed
> The logs tell me that the mount point doesn't exist, so I create it,
> and try to tell pacemaker.
> crm(live)resource# start gr_GROUPNAME
> Multiple attributes match name=target-role
> (group members listed here)
> Okay so starting a group doesn't work. I try to start the filesystem member:
> crm(live)resource# start fs_BLAH
> That didn't work. I expected it to, but it didn't.
> Failover failback doesn't work either.
> What am I doing wrong here? This seems fairly sensible..
> Thanks
> J
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