[Pacemaker] FW: Pacemaker: Change of network IPs of nodes on running cluster

[Andrew Beekhof]

On Tue, Oct 25, 2011 at 8:06 PM, Roland Goetz <roland.goetz at web.de> wrote:
> Hello all,
>
> I have a 2-node cluster running with Pacemaker/Corosync since a year.
> Now I had to change the IPs of the two nodes because we have moved the
> cluster onto another network.
> Since that change the cluster is no longer running.
>
> There was no change on the corosync link itself, corosync is starting well.
> I got an error like "Cannot communicate with cib" when I do a "crm status".
>
> As a workaround I switched off corosync on both nodes, powered down one
> node and mounted the volumes manually and have started the applications
> also manually.
>
> That means that the users can work but not with the advantage of HA
>
> Can you please tell me what went wrong?
> Is there a place where Pacemaker stores the IP ?

Not directly, but by default corosync uses it to calculate the nodeid
which pacemaker does use and keep in the cib.
You'll want to remove the "old" <node> entries from the cib.

>
> Installed version:
> corosynclib-1.2.1-1.el5                       Wed 14 Apr 2010 04:28:06 PM CEST
> corosync-1.2.1-1.el5                          Wed 14 Apr 2010 04:28:07 PM CEST
> resource-agents-1.0.3-1.el5                   Mon 19 Apr 2010 02:18:20 PM CEST
> cluster-glue-libs-1.0.4-1.el5                 Mon 19 Apr 2010 02:19:15 PM CEST
> cluster-glue-1.0.4-1.el5                      Mon 19 Apr 2010 02:19:16 PM CEST
> heartbeat-libs-3.0.3-1.el5                    Mon 19 Apr 2010 02:19:45 PM CEST
> pacemaker-libs-1.0.8-5.el5                    Mon 19 Apr 2010 02:19:46 PM CEST
> heartbeat-3.0.3-1.el5                         Mon 19 Apr 2010 02:19:47 PM CEST
> pacemaker-1.0.8-5.el5                         Mon 19 Apr 2010 02:19:48 PM CEST
> openaislib-1.1.0-1.el5                        Tue 20 Apr 2010 02:26:20 PM CEST
> openais-1.1.0-1.el5                           Tue 20 Apr 2010 02:26:21 PM CEST
> graphviz-2.12-8.el5                           Thu 22 Apr 2010 11:18:31 AM CEST
>
>
>
> Kind regards,
>
> Roland Goetz
>
>
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