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From Daniel Mikusa <dmik...@vmware.com>
Subject Re: SEVERE: Unable to start cluster.
Date Wed, 04 Apr 2012 15:11:38 GMT
----- Original Message -----
> Hi List,
> 
> Below is the error we are facing while starting tomcats.
> 
> SEVERE: Unable to start cluster.
> org.apache.catalina.tribes.ChannelException:
> java.net.SocketException: Not
> a multicast address; No faulty members identified.
> 

The address you specified is not a multicast address.  See the following link for info on
multicast addresses.

  https://en.wikipedia.org/wiki/Multicast_address

> 
> Our cluster setting is as below in server.xml
> 
> 
>  <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"
> channelSendOptions="6">
>         <Manager
>         className="org.apache.catalina.ha.session.BackupManager"
> expireSessionsOnShutdown="false"
>                    notifyListenersOnReplication="true"
>                    mapSendOptions="6"/>
> 
>             <Channel
> className="org.apache.catalina.tribes.group.GroupChannel">
>              <Membership
> className="org.apache.catalina.tribes.membership.McastService"

>                         address="192.168.3.14"

This is the address which is referenced from the error above.  It's not a multicast address.

>                         port="45564"
>                         frequency="500"
>                         dropTime="30000"/>
>              <Receiver
> className="org.apache.catalina.tribes.transport.nio.NioReceiver"
>                       address="auto"
>                       port="4000"
>                       selectorTimeout="5000"
>                       timeout="60000"
>                       maxThreads="6"/>
> 
>              <Sender
> className="org.apache.catalina.tribes.transport.ReplicationTransmitter">
>                   <Transport
> className="org.apache.catalina.tribes.transport.nio.PooledParallelSender"
> timeout="60000" keepAliveCount="0"/>
>              </Sender>
>              <Interceptor
> className="org.apache.catalina.tribes.group.interceptors.TcpFailureDetector"/>
>              <Interceptor
> className="org.apache.catalina.tribes.group.interceptors.MessageDispatch15Interceptor"/>
>              <Interceptor
> className="org.apache.catalina.tribes.group.interceptors.ThroughputInterceptor"/>
>            </Channel>
>          <Valve
>          className="org.apache.catalina.ha.tcp.ReplicationValve"
> 
> filter=".*\.gif|.*\.js|.*\.jpeg|.*\.jpg|.*\.png|.*\.htm|.*\.html|.*\.css|.*\.txt"/>
>          <Valve
> className="org.apache.catalina.ha.session.JvmRouteBinderValve"/>
>        <ClusterListener
> className="org.apache.catalina.ha.session.ClusterSessionListener"/>
>        <ClusterListener
> className="org.apache.catalina.ha.session.JvmRouteSessionIDBinderListener"/>
>      </Cluster>
> 
> 
> 
> Note: 192.168.3.14 is the IP of backup manager with java &
> 192.168.3.9 is
> the IP address of local tomcat where above server.xml is hosted.
> 
> Please guide us as to how to overcome the issue 

Use a correct multicast address.

>& please give us the sample

See the section title "For the impatient".

  https://tomcat.apache.org/tomcat-7.0-doc/cluster-howto.html

Dan


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