Enable JMX Remote in Tomcat 7

Introduction

Remote monitoring is essential in a IT infrastructure. Sadly is the standard Java JMX based on port range. Here I will show you to overcome that in Tomcat 7.

Installation

Download catalina-jmx-remote.jar to $CATALINA_HOME/lib

Configuration

$ vi $CATALINA_HOME/conf/server.xml

<Server port="8005" shutdown="SHUTDOWN">
...
  <Listener className="org.apache.catalina.mbeans.JmxRemoteLifecycleListener"
          rmiRegistryPortPlatform="10001" rmiServerPortPlatform="10002" />
...
</Server>

# vi $CATALINA_HOME/bin/setenv.sh

export JAVA_OPTS="-Dcom.sun.management.jmxremote=true \
                  -Dcom.sun.management.jmxremote.ssl=false \
                  -Dcom.sun.management.jmxremote.authenticate=false"

Test

Start jvisualvm and connect.

Reference

http://tomcat.apache.org/tomcat-7.0-doc/config/listeners.html

http://blog.markshead.com/1129/connecting-visual-vm-to-tomcat-7/

https://www.zabbix.com/documentation/2.0/manual/config/items/itemtypes/jmx_monitoring

http://docs.oracle.com/javase/1.5.0/docs/guide/management/agent.html