[Linux-cluster] GFS without RHCM but with Heartbeat V2 and drbd ?

Andrew Beekhof beekhof at gmail.com
Thu Jan 3 13:17:45 UTC 2008


On Jan 2, 2008, at 5:17 PM, Lon Hohberger wrote:

> On Fri, 2007-12-28 at 11:31 +0100, Holger Woehle wrote:
>> Hi,
>> at the moment i am evaluating RHCM and Heartbeat V2 to refine our
>> Heartbeat V1 Cluster.
>> My question as in the subject:
>> Is it possible to use GFS without the RHCM ?
>
> Not sure.  You don't need rgmanager, but you need
> fencing/membership/etc.
>
> Nothing precludes you from running HBv2 in addition to RHCM+GFS.

Providing you arrange for "non-overlapping areas of concern" -  
otherwise you could get the two cluster managers trying to pull the  
cluster in opposite directions.

A third option is to run the CRM^ (the part that is new with Heartbeat  
v2) on top of OpenAIS so that the CRM and GFS are sharing the same  
"membership/etc" infrastructure.

^ Now its own project called Pacemaker and with support for both  
cluster stacks.
For more details, see: http://clusterlabs.org

>> I want to build a 2 node cluster with drbd activ/activ and RHCM/GFS  
>> or
>> Heartbeat V2 with filesystem OCFS or GFS.
>
> Here's how to get a 2-node DRBD setup going w/ RHCM (without HBv2):
>
> http://sources.redhat.com/cluster/wiki/DRBD_Cookbook
>
> -- Lon
>
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