Hi, if you RAELLY need two clusters with the same name on the same subnet, then try to adjust the following parameters and use unique values for each cluster:
/Multicast network configuration/ cman uses multicast UDP packets to communicate with other nodes in the cluster. By default it will generate a multicast address using 239.192.x.x where x.x is the 16bit cluster ID number split into bytes. This, in turn is generated from a hash of the cluster name though it can be specified explicitly. The purpose of this is to allow multiple clusters to share the same subnet - they will each use a different multicast address. You might also/instead want to isolate clusters using the port number as shown above. It is possible to override the multicast address by specifying it in cluster.conf as shown: <cman> <multicast addr="229.192.0.1"/> </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> Kind regards, Laszlo On 03/28/2012 09:14 AM, Parvez Shaikh wrote: > Hi experts, > > I am running in to a problem in a situation where two clusters in the > network have same name. > > Node A, Node B : cluster name CLUSTER > Node C, Node D : cluster name CLUSTER > > Node C and Node D's cluster is running fine however when I start node > A it copies /etc/cluster.conf (I believe ccsd) from either C and D and > replaces its own and start attempting a cluster, of course it fails > because C or D is not a host name of node A. > > Is it possible to have more than one clusters in same network, these > nodes are in IBM blades hosted in Bladecenter and the heart beat IPs > are on private network. > > Thanks > > > > > > -- > Linux-cluster mailing list > Linux-cluster@redhat.com > https://www.redhat.com/mailman/listinfo/linux-cluster -- Linux-cluster mailing list Linux-cluster@redhat.com https://www.redhat.com/mailman/listinfo/linux-cluster