[Pacemaker] best/proper way to shut down a node for service

[David Morton]

I've asked this before, you should be able to search the question.
Essentially if pacemaker is shut down gracefully the remaining nodes are
happy to leave it be.

Generally I standby the node and then stop openais ... I have been caught
out once bringing a node back online which was in standby. The logical
volumes were some how active on the node coming back into the cluster, the
monitor operations detected this (key here: monitor operations fire even in
standby I believe) and shut down resources on the active node as part of
the recovery process.

On Wednesday, 23 January 2013, Dan Frincu wrote:

> Hi,
>
> On Wed, Jan 23, 2013 at 5:21 AM, Brian J. Murrell <brian at interlinx.bc.ca<javascript:;>>
> wrote:
> > OK.  So you have a corosync cluster of nodes with pacemaker managing
> > resources on them, including (of course) STONITH.
> >
> > What's the best/proper way to shut down a node, say, for maintenance
> > such that pacemaker doesn't go trying to "fix" that situation and
> > STONITHing it to try to bring it back up, etc.?
> >
> > Currently my practice for STONITH is to have it reboot.  Maybe it's a
> > better practice to have STONITH configured to just power a node down and
> > not try to power it back up for this exact reason?
> >
> > Any other suggestions welcome.
>
> I usually put the node in standby, which means it can no longer run
> any resources on it. Both Pacemaker and Corosync continue to run, node
> provides quorum.
>
> For global cluster maintenance, such as when upgrading to a major
> software version, maintenance-mode is needed.
>
> HTH,
> Dan
>
> >
> > Cheers,
> > b.
> >
> >
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>
>
>
> --
> Dan Frincu
> CCNA, RHCE
>
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