I assume that you are asking which JBoss AS ZIP file to download. Do you want to use 4.2.3 or 5.0.0? Are you using JDK5 or JDK6?
I think I use JDK5 because in repertory /usr/java I have a repertory jdk1.5.0.
What are the difference between 4.2.3 and 5.0.0?
I'm sorry but there not very documentation about mod_cluster.I have ever test to install it in my configuration but no succes it's why a search some help.
JBoss AS 4.2.3 is the older version and is sort of J2EE 1.4 with EJB3 support thrown in. JBoss AS 5.0.0 is the very latest version and is full Java EE compliant; but has quite a few problems (see the JBossAS5 forum for issues that people are seeing).
Whether you want 4.2.3 or 5.0.0, download the ZIP file that does not have "jdk6" in its name. That one without "jdk6" in its name is for use with JDK5.
You mention mod_cluster. I assume you want to set up a cluster of JBoss AS instances and front-end that with Apache HTTPD. If so, you need mod_jk: http://www.jboss.org/community/docs/DOC-11433
Thanks for your answers Peter,
I must require JBoss AS for install mod_cluster?
Because my application server are Tomcat server...
My configuration ever run with mod_jk so it is ever install.
Are you saying that you are not using JBoss Application Server?