7.2.2. Configure a Tomcat Worker Node

Procedure 7.2. Configure a Worker Node for Tomcat

1. Add a Listener to Tomcat

   Add the following Listener element beneath the other Listener elements in JBOSS_EWS_DIST/tomcat6/conf/server.xml.

   <Listener className="org.jboss.modcluster.container.catalina.standalone.ModClusterListener" advertise="true" stickySession="true" stickySessionForce="false" stickySessionRemove="true" />

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2. Give the Worker a Unique Identity

   Edit JBOSS_EWS_DIST/tomcat6/conf/server.xml and add a jvmRoute attribute and value to the Engine element, as shown:

   <Engine name="Catalina" defaultHost="localhost" jvmRoute="worker01">

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3. Optional Step: Configure Firewall for Proxy Server Advertisements

   A proxy server using the JBoss HTTP Connector can advertise itself via UDP multicast. To receive these multicast messages, open port 23364 for UDP connections on the worker node's firewall.
   For Linux Users

   /sbin/iptables -A INPUT -m state --state NEW -m udp -p udp --dport
    23364 -j ACCEPT 
   -m comment -comment "receive mod_cluster proxy server advertisements"

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   If you are not using Automatic Proxy Discovery, configure worker nodes with a static list of proxies. In this case you can safely ignore the following warning message:

   [warning] mod_advertise: ServerAdvertise Address or Port not defined, Advertise disabled!!!

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