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

[Vu Pham]

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 
subnet.
        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">
          </cman>
-----------------

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 ?

Vu