Hi again ! Now I setup GFS for 2 nodes in exactly the same way like in http://sources.redhat.com/cluster/doc/usage.txt # cat /proc/cluster/status /proc/cluster/nodes Version: 2.0.1 Config version: 1 Cluster name: alpha Cluster ID: 3169 Membership state: Cluster-Member Nodes: 2 Expected_votes: 1 Total_votes: 2 Quorum: 1 Active subsystems: 0 Node addresses: 10.201.60.12 192.168.0.10 Node Votes Exp Sts Name 1 1 1 M cl10 2 1 1 M cl20 But when I try fence_tool join get errors: Aug 27 17:50:33 cl10 ccsd[5031]: Error while processing connect: Connection refused Aug 27 17:50:34 cl10 ccsd[5031]: Cluster is not quorate. Refusing connection. Why System can not join to fance domain ? The Quorum is Ok ! My /etc/cluster/cluster.conf : <?xml version="1.0"?> <cluster name="alpha" config_version="1"> <cman two_node="1" expected_votes="1"> </cman> <nodes> <node name="cl10" votes="1"> <altname name="cl010"/> <fence> <method name="single"> <device name="human" ipaddr="cl10"/> </method> </fence> </node> <node name="cl20" votes="1"> <altname name="cl020"/> <fence> <method name="single"> <device name="human" ipaddr="cl20"/> </method> </fence> </node> </nodes> <fence_devices> <device name="human" agent="fence_manual"/> </fence_devices> </cluster> Thanks for any Help.