[Pacemaker] Nodes with different pacemaker version

[Dejan Muhamedagic]

Hi,

On Wed, Jun 08, 2011 at 10:50:23AM +0200, Pawel Warowny wrote:
> Hi
> 
> I need to migrate my cluster from Debian Squeeze to Redhat 6.0
> There were 2 nodes, so I migrated all resources to node_1 and on the
> second node I installed redhat and configured cluster
> The first problem - after starting new redhat node_2 - node_1 with
> debian is dying with logs:
> 
> Jun 07 14:30:54 tosia attrd: [2007]: ERROR: ais_dispatch: Receiving message body failed: (2) Library error: Resource temporarily unavailable (11)
> Jun 07 14:30:54 tosia attrd: [2007]: ERROR: ais_dispatch: AIS connection failed
> Jun 07 14:30:54 tosia stonithd: [2004]: ERROR: ais_dispatch: AIS connection failed
> Jun 07 14:30:54 tosia attrd: [2007]: CRIT: attrd_ais_destroy: Lost connection to OpenAIS service!
> Jun 07 14:30:54 tosia stonithd: [2004]: ERROR: AIS connection terminated
> Jun 07 14:30:54 tosia attrd: [2007]: info: main: Exiting...
> Jun 07 14:30:54 tosia attrd: [2007]: ERROR: attrd_cib_connection_destroy: Connection to the CIB terminated...

corosync obiously left (crashed?). Any core dumps in
/var/lib/corosync?

> [cut]
> 
> So I upgraded corosync package on node_1 from debian backports and
> after this node_2 doesn't kill node_1, but nodes don't see each other.
> 
> Is there any solution to create 2 node cluster with different
> corosync&pacemaker version on each node so I can migrate resources
> fluently between them?
> 
> node_1 (debian squeeze):
> pacemaker: 1.0.9 
> corosync: 1.2.1 and after upgrade form backports 1.3.0
> 
> node_2 (redhat 6.0)
> pacemaker: 1.1.2
> corosync: 1.2.3

This should work. I guess that you ran into a bug.

Thanks,

Dejan


> Best regards.
> 
> -- 
> Pawel Warowny



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