[Linux-cluster] problems with gfs and openais cluster.

[Enrique Sanchez]

On Mon, Aug 17, 2009 at 7:06 PM, Steven Dake<sdake at redhat.com> wrote:
> On Sat, 2009-08-15 at 08:12 -0400, Enrique Sanchez wrote:
>> On Sat, Aug 15, 2009 at 2:23 AM, Steven Dake<sdake at redhat.com> wrote:
>> >
>> > The openais.conf file is not used when starting with the cman service.
>> > Instead cman uses its own configuration file
>> > in /etc/cluster/cluster.conf.  openais should not be chkconfig'ed on
>> > unless running without cman.
>> >
>> > One reason you could have the error is that you have multiple clusters
>> > on the same multicast address as specified in /etc/cluster/cluster.conf.
>> >
>> > Regards
>> > -steve
>> >
>>
>> steve,
>>
>> thanks for the quick reply: the mcast address is the same and it
>> looks like it is using the same VLAN here are the details....
>>
>> this is one cluster (cluster one):
>>
>>         <cman expected_votes="1" two_node="1">
>>                 <multicast addr="224.0.0.1"/>
>>         </cman>
>>
>> and this is in the 2nd cluster (cluster two)......
>>
>>         <cman expected_votes="1" two_node="1">
>>                 <multicast addr="224.0.0.1" interface="eth1"/>
>>         </cman>
>>
>>
>> unfortunately eth1 is on the same VLAN for both clusters...is cluster
>> 1 using the mcast address on both adapters?
>>
>> thnx...
>> enrique.
>
> clusters are uniquely identified by their multicast address:port pair.
> I suggest changing one of the cluster multicast addresses to 224.0.0.2.
>
> Regards
> -steve
>>
>>
>
>

I think I need to use the <command> ccsd -m 224.0.0.2 </command> to
make the change, just I am not sure whether I need to do a cold start
on the cluster, will this bring the service down or can this be done
concurrently without affecting the service.

thanks again,
esv.

-- 
Enrique Sanchez Vela
------------------------------------------
"What you have been obliged to discover
by yourself leaves a path in your mind
which you can use again when the need
arises."    --G. C. Lichtenberg
http://themathcircle.org/