[Pacemaker] Pacemaker remote nodes, naming, and attributes

[David Vossel]

----- Original Message -----
> From: "Lindsay Todd" <rltodd.ml1 at gmail.com>
> To: "The Pacemaker cluster resource manager" <pacemaker at oss.clusterlabs.org>
> Sent: Wednesday, July 10, 2013 12:11:00 PM
> Subject: Re: [Pacemaker] Pacemaker remote nodes, naming, and attributes
> 
> Hmm, I'll still submit the bug report, but it seems like crmd is dumping core
> while attempting to fence a node. If I use fence_node to fence a real
> cluster node, that also causes crmd to dump core. But apart from that, I
> don't really see why pacemaker is trying to fence anything.

This should solve the crashes you are seeing.

https://github.com/ClusterLabs/pacemaker/commit/97dd3b05db867c4674fa4780802bba54c63bd06d

-- Vossel

> 
> 
> On Wed, Jul 10, 2013 at 12:42 PM, Lindsay Todd < rltodd.ml1 at gmail.com >
> wrote:
> 
> 
> 
> Thanks! But there is still a problem.
> 
> I am now working from the master branch and building RPMs (well, I have to
> also rebuild from the srpm to change the build number, since the RPMs built
> directly are always 1.1.10-1). The patch is in the git log, and indeed
> things are better ... But I still see the spurious VMs shutting down. What
> is much improved is that they do get restarted, and basically I end up in
> the state I want to be. Can almost live with this, and I was going to start
> changing my cluster config to be asymmetric when I noticed the in the midst
> of the spurious transitions, crmd is dumping core.
> 
> So I'll append another crm_report to bug 5164, as well as a gdb traceback.
> 
> 
> On Fri, Jul 5, 2013 at 5:06 PM, David Vossel < dvossel at redhat.com > wrote:
> 
> 
> 
> ----- Original Message -----
> > From: "David Vossel" < dvossel at redhat.com >
> > To: "The Pacemaker cluster resource manager" <
> > pacemaker at oss.clusterlabs.org >
> > Sent: Wednesday, July 3, 2013 4:20:37 PM
> > Subject: Re: [Pacemaker] Pacemaker remote nodes, naming, and attributes
> > 
> > ----- Original Message -----
> > > From: "Lindsay Todd" < rltodd.ml1 at gmail.com >
> > > To: "The Pacemaker cluster resource manager"
> > > < pacemaker at oss.clusterlabs.org >
> > > Sent: Wednesday, July 3, 2013 2:12:05 PM
> > > Subject: Re: [Pacemaker] Pacemaker remote nodes, naming, and attributes
> > > 
> > > Well, I'm not getting failures right now simply with attributes, but I
> > > can
> > > induce a failure by stopping the vm-db02 (it puts db02 into an unclean
> > > state, and attempts to migrate the unrelated vm-compute-test). I've
> > > collected the commands from my latest interactions, a crm_report, and a
> > > gdb
> > > traceback from the core file that crmd dumped, into bug 5164.
> > 
> > 
> > Thanks, hopefully I can start investigating this Friday
> > 
> > -- Vossel
> 
> Yeah, this is a bad one. Adding the node attributes using crm_attribute for
> the remote-node did some unexpected things to the crmd component. Somehow
> the remote-node was getting entered into the cluster node cache... which
> made it look like we had both a cluster-node and remote-node named the same
> thing... not good.
> 
> I think I got that part worked out. Try this patch.
> 
> https://github.com/ClusterLabs/pacemaker/commit/67dfff76d632f1796c9ded8fd367aa49258c8c32
> 
> Rather than trying to patch RCs, it might be worth trying out the master
> branch on github (which already has this patch). If you aren't already, use
> rpms to make your life easier. Running 'make rpm' in the source directory
> will generate them for you.
> 
> There was another bug fixed recently in pacemaker_remote involving the
> directory created for resource agents to store their temporary data (stuff
> like pid files). I believe the fix was not introduced until 1.1.10rc6.
> 
> -- Vossel
> 
> 
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