I need to setup a HA JBoss AS7.1 cluster. However, the documentation (https://docs.jboss.org/author/display/AS71/High+Availability+Guide) is work in progress and I can't afford to rely on it for a production environment. What's the proper way to go about it? Should I use an older JBoss AS version where the documentation is presumably complete, should I purchase some kind of support / training from JBoss ? I find it hard to believe that an enterprise-grade application server can ship without proper documentation.