Chapter 22 Monitoring and Managing Tomcat

To easily monitor and manage Tomcat, use the JMX Remote. The following lists the steps in enabling JMX Remote:

1. Add the following parameters to the Tomcat Startup Script:

set CATALINA_OPTS="-Dcom.sun.management.jmxremote\
-Dcom.sun.management.jmxremote.port=%my.jmx.port%\
-Dcom.sun.management.jmxremote.ssl=false\
-Dcom.sun.management.jmxremote.authenticate=false"

2. If authorization is good, you may add and change the following code:

-Dcom.sun.management.jmxremote.authenticate=true\
-Dcom.sun.management.jmxremote.password.file=../conf/jmxremote.password\

3. Edit the acess allow file $CATALINA_BASE/conf/jmxremote.access:

monitorRole readonly
controlRole readwrite

To activate the JMX MX4J Http Adaptor with Java 1.4, follow these steps:

1. Install the Tomcat Compat Package.

2. Install mx4j-tools.jat in common/lib.

3. Configure the MX4J JMX HTTP Adaptor in the AJP Connector.

<Connector port="${AJP.PORT}" 
            handler.list="mx" 
            mx.enabled="true" 
            mx.httpHost="${JMX.HOST}" 
            mx.httpPort="${JMX.PORT}" 
            protocol="AJP/1.3" />

4. Start Tomcat and access http://${JMX.HOST}:${JMX.PORT}.

5. Control the access with the mx connector parameter mx.authMode="basic"mx.authUser="tomcat"mx.authPassword="strange".

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