How to enable jmx on tomcat in linux

create setenv.sh in $CATALINA_HOME/bin, add following lines to here

CATALINA_OPTS="-Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=8086 -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false -Djava.rmi.server.hostname=192.168.4.38"

Important!: don't forget to give quote(")

Tomcat: “java.lang.OutOfMemoryError: PermGen space” error

solution:

create setenv.sh as follow and put it into $CANTLINA_HOME/bin

#!/bin/sh

JAVA_OPTS="-Xms256m -Xmx512m -XX:+CMSClassUnloadingEnabled -XX:+UseConcMarkSweepGC -XX:MaxPermSize=256m"