[Linux-cluster] Can same cluster name in same subnet?

Vu Pham vu at sivell.com
Tue Mar 31 06:10:20 UTC 2009

Chen Ming wrote:
> Hi,
> I setup two cluster in same subnet, using the same name, it seems the 
> later cluster can not startup. I try to start cman but failed. My 
> environment is RHEL 5.3.
> My question: Is it possible to use the same cluster name in same subnet?

 From the man page of cman
Cluster ID
        The  cluster  ID number is used to isolate clusters in the same 
        Usually it is generated from a hash of the cluster name, but it 
can  be
        overridden  here if you feel the need. Sometimes cluster names 
can hash
        to the same ID.

          <cman cluster_id="669">

So I think you either have to use different names or to explicitly 
specify different cluster_id.

But why do you have to have the same cluster name in the first place ?


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