[Pacemaker] Breaking pacemaker
Dominik Klein
dk at in-telegence.net
Tue Feb 16 13:38:44 UTC 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.
Regards
Dominik
> 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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