Re: Problem clustering with multiple nodes

Tue, 13 Jun 2006 15:02:30 -0700 

How do you "go to another server"?
are you using a load balancer?

ie, is your session cookie passed correctly when you switch server.

Filip


Troy Davidson wrote:
I am trying to get a horizontal and vertical cluster working. There are three servers with two instances on Tomcat on each one. The six Tomcat instances are to share session data amongst themselves. The vertical clustering works fine. I can log into the app on a server and if I stay on that server, the session is replicated.
But, as soon as I go to another server, the session is lost and I have to re login. 

I see in the catalina.out that all the Tomcat instances are added:
NFO: Replication member added:org.apache.catalina.cluster.mcast.McastMember[tcp://10.9.100.2:4025,catalina,10.9.100.2,4025, alive=3] 

There is an entry for each Tomcat that will be in the cluster.
I can't find any problem with how things are setup, but obviously there is a problem. Here are the server.xml from two separate Tomcat's on separate servers. If someone in the know can take a look and let me know if there is a problem, that would be great. The servers can see each other and communication is happening. 

++++++++++++++++++++++++++++++++++++++++++++++++++++++

server.xml from Tomcat4 on server1:

<Server port="14005" shutdown="SHUTDOWN">

 <Listener className="org.apache.catalina.core.AprLifecycleListener" />
<Listener className="org.apache.catalina.mbeans.ServerLifecycleListener" /> <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" /> <Listener className="org.apache.catalina.storeconfig.StoreConfigLifecycleListener"/> 

 <GlobalNamingResources>

   <Environment name="simpleValue" type="java.lang.Integer" value="30"/>

   <Resource name="UserDatabase" auth="Container"
             type="org.apache.catalina.UserDatabase"
      description="User database that can be updated and saved"
          factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
         pathname="conf/tomcat-users.xml" />

 </GlobalNamingResources>

 <Service name="Catalina">


   <Connector port="14080" maxHttpHeaderSize="8192"
              maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
enableLookups="false" redirectPort="14443" acceptCount="100" 
              connectionTimeout="20000" disableUploadTimeout="true" />

   <Connector port="14009"
enableLookups="false" redirectPort="14443" protocol="AJP/1.3" /> 

   <Engine name="Standalone" defaultHost="localhost" jvmRoute="jvm14">


     <Realm className="org.apache.catalina.realm.UserDatabaseRealm"
            resourceName="UserDatabase"/>

     <Host name="localhost" appBase="webapps"
      unpackWARs="true" autoDeploy="true"
      xmlValidation="false" xmlNamespaceAware="false">
<Cluster className="org.apache.catalina.cluster.tcp.SimpleTcpCluster" managerClassName="org.apache.catalina.cluster.session.DeltaManager" 
                expireSessionsOnShutdown="false"
                useDirtyFlag="false"
                notifyListenersOnReplication="true">

           <Membership
               className="org.apache.catalina.cluster.mcast.McastService"
               mcastAddr="228.0.0.4"
               mcastPort="45564"
               mcastFrequency="500"
               mcastDropTime="3000"/>

           <Receiver
className="org.apache.catalina.cluster.tcp.ReplicationListener" 
               tcpListenAddress="10.9.100.1"
               tcpListenPort="4014"
               tcpSelectorTimeout="100"
               tcpThreadCount="6"/>

           <Sender
className="org.apache.catalina.cluster.tcp.ReplicationTransmitter" 
               replicationMode="pooled"
               ackTimeout="15000"
               waitForAck="true"/>
<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>

   <Context path="" docBase="app" debug="0">
   </Context>

   <Context path="/app" docBase="app" debug="0">
   </Context>
     </Host>
   </Engine>
 </Service>
</Server>



++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

server.xml from Tomcat5 on server2:

<Server port="25005" shutdown="SHUTDOWN">
 <Listener className="org.apache.catalina.core.AprLifecycleListener" />
<Listener className="org.apache.catalina.mbeans.ServerLifecycleListener" /> <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" /> <Listener className="org.apache.catalina.storeconfig.StoreConfigLifecycleListener"/> 

 <GlobalNamingResources>
   <Environment name="simpleValue" type="java.lang.Integer" value="30"/>
   <Resource name="UserDatabase" auth="Container"
             type="org.apache.catalina.UserDatabase"
      description="User database that can be updated and saved"
          factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
         pathname="conf/tomcat-users.xml" />
 </GlobalNamingResources>
 <Service name="Catalina">

   <Connector port="25080" maxHttpHeaderSize="8192"
              maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
enableLookups="false" redirectPort="25443" acceptCount="100" 
              connectionTimeout="20000" disableUploadTimeout="true" />
<Connector port="25009" enableLookups="false" redirectPort="25443" protocol="AJP/1.3" /> 
   <Engine name="Standalone" defaultHost="localhost" jvmRoute="jvm25">
<Realm className="org.apache.catalina.realm.UserDatabaseRealm" resourceName="UserDatabase"/> <Host name="localhost" appBase="webapps" unpackWARs="true" autoDeploy="true" xmlValidation="false" xmlNamespaceAware="false">
<Cluster className="org.apache.catalina.cluster.tcp.SimpleTcpCluster" managerClassName="org.apache.catalina.cluster.session.DeltaManager" 
                expireSessionsOnShutdown="false"
                useDirtyFlag="false"
                notifyListenersOnReplication="true">

           <Membership
               className="org.apache.catalina.cluster.mcast.McastService"
               mcastAddr="228.0.0.4"
               mcastPort="45564"
               mcastFrequency="500"

               mcastPort="45564"
               mcastFrequency="500"
               mcastDropTime="3000"/>

           <Receiver
className="org.apache.catalina.cluster.tcp.ReplicationListener" 
               tcpListenAddress="10.9.100.2"
               tcpListenPort="4025"
tcpSelectorTimeout="100" tcpThreadCount="6"/> 
           <Sender
className="org.apache.catalina.cluster.tcp.ReplicationTransmitter" 
               replicationMode="pooled"
               ackTimeout="15000"
               waitForAck="true"/>
<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>


   <Context path="" docBase="app" debug="0">
   </Context>

   <Context path="/app" docBase="app" debug="0">
   </Context>

     </Host>

   </Engine>

 </Service>

</Server>


++++++++++++++++++++++++++++++++++++++++++++++++++++++++++






--


Filip Hanik

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