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From Filip Hanik - Dev Lists <devli...@hanik.com>
Subject Re: Tomcat 5.5 Clustering issues
Date Mon, 09 Jul 2007 14:34:23 GMT
correct, on the multicast IP

Filip

Andrew R Feller wrote:
> Is the multicast heartbeat picked up over the multicast IP or the
> Receiver address that is broadcasted?  I assume it is the multicast IP
> as the Receiver is supposedly used for replication only.
>
> Andrew R Feller, Analyst
> Subversion Administrator
> University Information Systems
> Louisiana State University
> afelle1@lsu.edu
> (office) 225.578.3737
> -----Original Message-----
> From: Filip Hanik - Dev Lists [mailto:devlists@hanik.com] 
> Sent: Tuesday, July 03, 2007 9:55 AM
> To: Tomcat Users List
> Subject: Re: Tomcat 5.5 Clustering issues
>
> the disappeared message appears 3seconds after the member added message.
> 3 seconds is the timeout you have set, ie, if no multicast heartbeat is 
> received after 3 seconds, consider the member dead.
> so it seems like multicasting is not working properly on your system.
>
> Filip
>
> Andrew R Feller wrote:
>   
>> Good morning everyone,
>>
>>  
>>
>> I have been trying to get Tomcat clustering between two Tomcat
>>     
> instances
>   
>> set up, but I have run into some issues.  After opening the necessary
>> ports in the firewall, routing the broadcast messages to the correct
>> network interface (eth0), and setting up server.xml with the necessary
>> membership information, I get the following from my Tomcat logs:
>>
>>  
>>
>> 2007-07-03 09:16:37,247 INFO
>> [org.apache.catalina.cluster.tcp.SimpleTcpCluster] - Replication
>>     
> member
>   
> added:org.apache.catalina.cluster.mcast.McastMember[tcp://130.39.184.173
>   
>> :4001,catalina,130.39.184.173,4001, alive=30318]
>>
>> 2007-07-03 09:16:37,256 DEBUG
>> [org.apache.catalina.cluster.tcp.DataSender] - Create sender
>> [/130.39.184.173:4,001]
>>
>> 2007-07-03 09:16:40,724 INFO
>> [org.apache.catalina.cluster.tcp.SimpleTcpCluster] - Received member
>>
>>     
> disappeared:org.apache.catalina.cluster.mcast.McastMember[tcp://130.39.1
>   
>> 84.173:4001,catalina,130.39.184.173,4001, alive=30318]
>>
>>  
>>
>> What could be the cause of cluster members disappearing immediately
>> after being added?  Am I missing anything necessary for setting up
>> clustering / session replication?  Relative information about the
>>     
> server
>   
>> is below.
>>
>>  
>>
>> Thank you,
>>
>> Andrew
>>
>>  
>>
>> Tomcat: 5.5.23
>>
>> Server: RHEL 5
>>
>> Server.xml:
>>
>>  
>>
>>     <Cluster
>> className="org.apache.catalina.cluster.tcp.SimpleTcpCluster"
>>
>>  
>> managerClassName="org.apache.catalina.cluster.session.DeltaManager"
>>
>>         expireSessionsOnShutdown="false"
>>
>>         useDirtyFlag="true">
>>
>>  
>>
>>         <Membership
>>
>>             className="org.apache.catalina.cluster.mcast.McastService"
>>
>>             mcastAddr="239.39.184.173"
>>
>>             mcastPort="45564"
>>
>>             mcastFrequency="500"
>>
>>             mcastDropTime="3000" />
>>
>>  
>>
>>         <Receiver
>>
>>  
>> className="org.apache.catalina.cluster.tcp.ReplicationListener"
>>
>>             tcpListenAddress="auto"
>>
>>             tcpListenPort="4001"
>>
>>             tcpSelectorTimeout="100"
>>
>>             tcpThreadCount="6" />
>>
>>  
>>
>>         <Sender
>>
>>  
>> className="org.apache.catalina.cluster.tcp.ReplicationTransmitter"
>>
>>             replicationMode="synchronous" />
>>
>>  
>>
>>             <Valve
>> className="org.apache.catalina.cluster.tcp.ReplicationValve"
>>
>>  
>>
>>     
> filter=".*\.gif;.*\.js;.*\.jpg;.*\.png;.*\.htm;.*\.html;.*\.css;.*\.txt;
>   
>> " />
>>
>>  
>>
>>         <ClusterListener
>> className="org.apache.catalina.cluster.session.ClusterSessionListener"
>> />
>>
>>  
>>
>>     </Cluster>
>>
>>  
>>
>> IP table rules:
>>
>>  
>>
>>     -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport
>> 4001 -j ACCEPT
>>
>>     -A RH-Firewall-1-INPUT -p udp --dport 45564 -d 239.39.184.173 -j
>> ACCEPT
>>
>>
>>   
>>
>>     
> ------------------------------------------------------------------------
>   
>> No virus found in this incoming message.
>> Checked by AVG Free Edition. 
>> Version: 7.5.476 / Virus Database: 269.9.14/884 - Release Date:
>>     
> 7/2/2007 3:35 PM
>   
>>   
>>     
>
>
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>
>   


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