Yes that was it, copied jbossha.jar from the "all" server config. Now the cluster service show in JMX console. Thank you! (-:} View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4044799#4044799 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4044799