Clustered tomcat config

catalina.properties

package.access=sun.,org.apache.catalina.,org.apache.coyote.,org.apache.tomcat.,org.apache.jasper.,sun.beans.
package.definition=sun.,java.,org.apache.catalina.,org.apache.coyote.,org.apache.tomcat.,org.apache.jasper.
common.loader=${catalina.base}/lib,${catalina.base}/lib/*.jar,${catalina.home}/lib,${catalina.home}/lib/*.jar
server.loader=
shared.loader=

tomcat.util.buf.StringCache.byte.enabled=true

http.port=8080
shutdown.port=8005
jmx.port=6969
ajp.port=8009
ssl.port=8443

multicast.domain=myapp-environment
multicast.port=45563
receiver.port=4007

server.xml

<?xml version='1.0' encoding='utf-8'?>

<Server port="${shutdown.port}" shutdown="SHUTDOWN">
    <Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on"/>
    <Listener className="org.apache.catalina.core.JasperListener"/>
    <Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener"/>
    <Listener className="org.apache.catalina.mbeans.ServerLifecycleListener"/>
    <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener"/>
    <GlobalNamingResources>
        <Resource name="UserDatabase" auth="Container"
                  type="org.apache.catalina.UserDatabase"
                  description="User database that can be updated and saved"
                  factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
                  pathname="conf/tomcat-users.xml"/>
    </GlobalNamingResources>
    <Service name="Catalina">
        <Executor name="tomcatThreadPool" namePrefix="tomcat-http--" maxThreads="400" minSpareThreads="50"/>
        <Connector
                port="${http.port}"
                protocol="HTTP/1.1"
                executor="tomcatThreadPool"
                connectionTimeout="20000"
                redirectPort="${ssl.port}"/>
        <Connector port="${ajp.port}" protocol="AJP/1.3" redirectPort="${ssl.port}"/>
        <Engine name="Catalina" defaultHost="localhost">


            <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"
                     channelSendOptions="8">

                <Manager className="org.apache.catalina.ha.session.DeltaManager"
                         expireSessionsOnShutdown="false"
                         notifyListenersOnReplication="true"/>

                <Channel className="org.apache.catalina.tribes.group.GroupChannel">
                    <Membership className="org.apache.catalina.tribes.membership.McastService"
                                address="228.0.0.4"
                                port="${multicast.port}"
                                domain="${multicast.domain}"
                                frequency="500"
                                dropTime="3000"/>
                    <Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver"
                              address="auto"
                              port="${receiver.port}"
                              autoBind="100"
                              selectorTimeout="5000"
                              maxThreads="6"/>
                    <Sender className="org.apache.catalina.tribes.transport.ReplicationTransmitter">
                        <Transport className="org.apache.catalina.tribes.transport.nio.PooledParallelSender"/>
                    </Sender>
                    <Interceptor className="org.apache.catalina.tribes.group.interceptors.DomainFilterInterceptor"
                                 domain="${multicast.domain}"/>
                    <Interceptor className="org.apache.catalina.tribes.group.interceptors.TcpFailureDetector"/>
                    <Interceptor
                            className="org.apache.catalina.tribes.group.interceptors.MessageDispatch15Interceptor"/>
                </Channel>
                <Valve className="org.apache.catalina.ha.tcp.ReplicationValve" filter=""/>
                <Valve className="org.apache.catalina.ha.session.JvmRouteBinderValve"/>
                <ClusterListener className="org.apache.catalina.ha.session.JvmRouteSessionIDBinderListener"/>
                <ClusterListener className="org.apache.catalina.ha.session.ClusterSessionListener"/>
            </Cluster>
            <Realm className="org.apache.catalina.realm.UserDatabaseRealm"
                   resourceName="UserDatabase"/>
            <Host name="localhost" appBase="webapps"
                  unpackWARs="true" autoDeploy="true"
                  xmlValidation="false" xmlNamespaceAware="false">
            </Host>
        </Engine>
    </Service>
</Server>