[Pacemaker] Pacemaker 1.1.7 and negative corosync nodeid

[Nate Clark]

> From: Andrew Beekhof <andrew at beekhof.net>
> To: The Pacemaker cluster resource manager <pacemaker at oss.clusterlabs.org>
> Cc:
> Date: Mon, 26 Aug 2013 09:26:32 +1000
> Subject: Re: [Pacemaker] Pacemaker 1.1.7 and negative corosync nodeid
>
> On 24/08/2013, at 5:26 AM, Nate Clark <nate at neworld.us> wrote:
>
> > I have a few systems running pacemaker 1.1.7 using corosync and some of
> them hit the issue that the nodeid in the cib is recorded as a negative
> number. This issue was resolved in commit
> f0e9b262f1d3219df248a5340771f8e23c5d6bce. However if you upgrade pacemaker
> to 1.1.8, the new pacemaker now sees two nodes for every node that hit this
> issue. It sees one with the negative nodeid and one with the positive.
> >
> > Is there a way to prevent this from happening when upgrading from 1.1.7?
> One way I can think of doing this would be to edit the cib while pacemaker
> is down so that when it comes up the values are now positive but I am not
> sure of a way to do that because of the cib signing.
>
> Once the cluster is running again, you can "just" clear out the old
> entries with: cibadmin --replace --xml-text '<nodes/>'
> That should be enough IIRC
>
>
That seems to work fine if you upgrade all nodes simultaneously but if you
try and perform a rolling upgrade the negative node ids come back. I assume
this is because the node running the old pacemaker is still using those
nodeids and is sending them back to the new node. Is there anyway to be
able to perform this upgrade rolling or will it have to be all nodes at
once?

Thanks,
-nate
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