OK, so I want to use the "HASingleton Deployments using a Barrier". 1- setup cluster on 2 nodes inititally with "DefaultPartition" 2- copy deploy-hasingleton-service.xml from the server/all/deploy to server/ofmychoice/deploy for both nodes. 3- add jboss.ha:service=HASingletonDeployer,type=Barrier to my mBean service definition with jboss-service.xml 4 - same SAR file is deployed to /server/ofmychoice/deploy on both clustered nodes. Is this correct, what determines the master node? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4046597#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...