[Pacemaker] DRBD-MYSQL Pacemaker-Corosync won't failover

[Joe]

I think it would make it more complicated if we setup a third node.
On 10/28/2011 11:11 AM, Van Tonder, Raymond wrote:
>
> On 10/28/2011 9:28 AM, Andreas Kurz wrote:
>
> > Hello,
>
> >
>
> > On 10/28/2011 04:06 PM, Joe wrote:
>
> >> Hello everyone,
>
> >>
>
> >> My goal is to build a HA DRBD and MYSQL on two 
> nodes(active/passive).  I
>
> >> followed the " cluster from scratch" article to build this 
> environment.
>
> >> If I do standby failover host, it works fine but when I pull the
>
> >> heartbeat cable from the active node, the resources do not fail 
> over to
>
> >> the secondary. Please advise. Thank you very much. Joe
>
> > * "the" heartbeat cable == one heartbeat cable? Not supported setup --
>
> > use at least two heartbeat channels, add at least the DRBD replication
>
> > network.
>
> >
>
> > * you produced a split brain situation. I'd expect you see errors in
>
> > your cluster status and see DRBD log entries with a wording similar to
>
> > "not allowed to become primary because allow-two-primaries is not set"
>
> > ... if you had also pulled DRBD link you would have all resources
>
> > running twice
>
> >
>
> > * use stonith to recover from a split-brain situation (or block if its
>
> > unsuccessful)
>
> >
>
> > * read more manuals ;-)
>
> >
>
> >> *CENTOS 5.6/drbd8.3/corosync/pacemaker
>
> >>
>
> >> node-0 IP: 192.168.1.101 (heartbeat) 10.0.0.10 (drdb)
>
> >> node-1 IP: 192.168.1.102 (heartbeat) 10.0.0.20 ( drbd)
>
> >> Cluster Virtual IP: 192.168.1.160
>
> >>
>
> >> * _crm configure show_
>
> >> node $id="2b68511d-b96f-4b56-9f66-70262e3e2c46" mysqldrbd01 \
>
> >>      attributes standby="off"
>
> >> node $id="d86dc58b-2309-43d9-af96-6519127e83d7" mysqldrbd02 \
>
> >>      attributes standby="off"
>
> > These ids are from Heartbeat CCM ... but you attached a Corosync
>
> > configuration? Decide for one ... either Heartbeat or Corosync.
>
> >
>
> > Regards,
>
> > Andreas
>
> >
>
> >
>
> >
>
> I would suggest adding a third node (without the mysql and drdb) just 
> for quorum/heartbeat checking
>
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