[Linux-HA] Redundant Rings "Still Not There?"

Vadym Chepkov vchepkov at gmail.com
Sun Oct 24 14:35:35 MDT 2010

On Oct 24, 2010, at 4:09 PM, Robinson, Eric wrote:

>>> But now could someone please elaborate on Dejan Muhamedagic's
> original 
>>> comment that started the thread? What does "redundant rings are still
>>> not there" mean? Is a three-node cluster an unreliable setup because 
>>> Corosync and/or Pacemaker are not really ready for that?
>> not Pacemaker - Corosync. I agree with Dejan. I also use Heartbeat for
> clusters communication layer.
> So you use Heartbeat+Pacemaker instead of Corosync+Pacemaker? How does
> Heartbeat handle 3-node clusters? Does it use the same "ring" metaphor
> and switches for cluster communication?

Heartbeat uses term "communication path", instead.
And yes it has been able to support more then two node cluster since version 2.
Take a look at http://oss.linbit.com/drbd-mc/ It's a nifty java application which can 
help you to create your initial cluster configuration in no time.


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