Unable to start JBoss in clustered environment

[nitesh]

Hi,

This is the first time I'm trying out clustering with JBoss. I'm trying to start JBoss with only one node in a cluster just to figure out the configuration required.

I'm getting the following error on starting JBoss with 'run -c all':

12:42:42,178 INFO [DefaultPartition] Initializing
12:42:42,238 ERROR [JChannel] exception: java.lang.Exception: exception caused b
y UDP.start(): java.net.SocketException: Not a multicast address
12:42:42,238 ERROR [ClusterPartition] Starting failed jboss:service=DefaultParti
tion
ChannelException: java.lang.Exception: exception caused by UDP.start(): java.net
.SocketException: Not a multicast address
at org.jgroups.JChannel.connect(JChannel.java:323)
at org.jboss.ha.framework.server.ClusterPartition.startService(ClusterPa
rtition.java:297)
at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanS
upport.java:272)
at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMB
eanSupport.java:222)

My cluster MBean descriptor in jboss-service.xml looks like this:

<mbean code="org.jboss.ha.framework.server.ClusterPartition"
 name="jboss:service=DefaultPartition">

 <!-- Name of the partition being built -->
 <attribute name="PartitionName">DefaultPartition</attribute>

 <!-- The address used to determine the node name -->
 <attribute name="NodeAddress">10.1.3.76</attribute>

 <!-- Determine if deadlock detection is enabled -->
 <attribute name="DeadlockDetection">False</attribute>

 <!-- Max time (in ms) to wait for state transfer to complete. Increase for large states -->
 <attribute name="StateTransferTimeout">30000</attribute>

 <!-- The JGroups protocol configuration -->
 <attribute name="PartitionConfig">
 <!--
 The default UDP stack:
 - If you have a multihomed machine, set the UDP protocol's bind_addr attribute to the
 appropriate NIC IP address, e.g bind_addr="192.168.0.2".
 - On Windows machines, because of the media sense feature being broken with multicast
 (even after disabling media sense) set the UDP protocol's loopback attribute to true
 -->
 <Config>
 <UDP mcast_addr="10.1.3.76" mcast_port="45566"
 ip_ttl="8" ip_mcast="true"
 mcast_send_buf_size="800000" mcast_recv_buf_size="150000"
 ucast_send_buf_size="800000" ucast_recv_buf_size="150000"
 loopback="true"/>
 <PING timeout="2000" num_initial_members="3"
 up_thread="true" down_thread="true"/>
 <MERGE2 min_interval="10000" max_interval="20000"/>
 <FD shun="true" up_thread="true" down_thread="true"
 timeout="2500" max_tries="5"/>
 <VERIFY_SUSPECT timeout="3000" num_msgs="3"
 up_thread="true" down_thread="true"/>
 <pbcast.NAKACK gc_lag="50" retransmit_timeout="300,600,1200,2400,4800"
 max_xmit_size="8192"
 up_thread="true" down_thread="true"/>
 <UNICAST timeout="300,600,1200,2400,4800" window_size="100" min_threshold="10"
 down_thread="true"/>
 <pbcast.STABLE desired_avg_gossip="20000"
 up_thread="true" down_thread="true"/>
 <FRAG frag_size="8192"
 down_thread="true" up_thread="true"/>
 <pbcast.GMS join_timeout="5000" join_retry_timeout="2000"
 shun="true" print_local_addr="true"/>
 <pbcast.STATE_TRANSFER up_thread="true" down_thread="true"/>
 </Config>

 <!-- Alternate TCP stack: customize it for your environment, change bind_addr and initial_hosts -->
 </attribute>
 </mbean>

I've checked in my host file and the hostname-ip address is correctly mapped.

Any help will be highly appreciated.

Regards,

Nitesh

[brian.stansberry]

You're setting the multicast address when I think your intent is to set the bind address. The bind_addr attribute controls what interface the JGroups UDP layer binds to when sending and receiving multicast. The mcast_addr attribute has to be a valid multicast address.

Here is an example:

<UDP bind_addr="10.1.3.76" mcast_addr="228.1.2.3" mcast_port="45566"
ip_ttl="8" ip_mcast="true"
mcast_send_buf_size="800000" mcast_recv_buf_size="150000"
ucast_send_buf_size="800000" ucast_recv_buf_size="150000"
loopback="false"/>

Also, you may not even need to set bind_addr; it's needed if your machine has more than one IP address.

[belaban]

UDP mcast_addr="10.1.3.76"

not a multicast address, like the error message said :-)

Use 228.4.5.6 for example