[jboss-user] [Clustering/JBoss] - Clustering Novice

mogy do-not-reply at jboss.com
Sun Oct 26 23:55:55 EDT 2008


Hi all,
I have been allocated an issue to resolve on JBoss clustering. I'd like to understand what is supposed to happen before I dive into our application issues.

My testing environment.
-----------------------------
Machine (a) WinXP     
Virtual Machine (b) VMWare Instance running RedHat 4 (on same machine)

I have successfully managed to get the two JBoss instances clustering after initial startup (no applications installed) and all is happy until I disable the network card in the virtual machine (trying to simulate a network outage).

When I bring it back online they fail to re-establish a cluster, with 
"[FD] I was suspected by 192.168.56.130:1123; ignoring the SUSPECT message and sending back a HEARTBEAT_ACK" messages until I restart either of the JBoss instances.

If anyone could shed some light on why this happens, I'd be grateful.
thank you Mogy ...





            <UDP mcast_addr="${jboss.partition.udpGroup:228.1.2.3}" 
                 mcast_port="${jboss.hapartition.mcast_port:45566}"
                 tos="8"
                 ucast_recv_buf_size="20000000"
                 ucast_send_buf_size="640000"
                 mcast_recv_buf_size="25000000"
                 mcast_send_buf_size="640000"
                 loopback="true"
                 discard_incompatible_packets="true"
                 enable_bundling="false"
                 max_bundle_size="64000"
                 max_bundle_timeout="30"
                 use_incoming_packet_handler="true"
                 use_outgoing_packet_handler="false"
                 ip_ttl="${jgroups.udp.ip_ttl:2}"
                 down_thread="false" up_thread="false"/>
            <PING timeout="2000"
                  down_thread="false" up_thread="false" num_initial_members="3"/>
            <MERGE2 max_interval="100000"
                    down_thread="false" up_thread="false" min_interval="20000"/>
            <FD_SOCK down_thread="false" up_thread="false"/>
            <FD timeout="5000" max_tries="5" down_thread="false" up_thread="false" shun="false"/>
            <VERIFY_SUSPECT timeout="1500" down_thread="false" up_thread="false"/>
            <pbcast.NAKACK max_xmit_size="60000"
                    use_mcast_xmit="false" gc_lag="0"
                    retransmit_timeout="300,600,1200,2400,4800"
                    down_thread="false" up_thread="false"
                    discard_delivered_msgs="true"/>
            <UNICAST timeout="300,600,1200,2400,3600"
                    down_thread="false" up_thread="false"/>
            <pbcast.STABLE stability_delay="1000" desired_avg_gossip="50000"
                    down_thread="false" up_thread="false"
                    max_bytes="400000"/>
            <pbcast.GMS print_local_addr="true" join_timeout="3000"
                    down_thread="false" up_thread="false"
                    join_retry_timeout="2000" shun="true"
                    view_bundling="true"/>
            <FRAG2 frag_size="60000" down_thread="false" up_thread="false"/>
            <pbcast.STATE_TRANSFER down_thread="false" up_thread="false" use_flush="false"/>
         











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