Application Logs do not show in server.log on JBoss EAP 6

Issue

• Even after creating the <periodic-rotating-file-handler></periodic-rotating-file-handler> the system logs do not show in server.log on each hosts.
• Messages are not logged in server.log. We use slf4j as our application's logging framework, but when we deploy our WAR into JBoss and invoke a component that does logging, we don't see any messages.