Hi again Josph
1) I'm happy with JBoss clustering using MCast, so you are able to add a node without administrating a other one.
It is possible to use TCP cluster configuration if you are not able to use multicast, I never configure it but I'm sure it will work
The Master/Slave will come automaticaly, one of the server's will become the master (it will change if this server goes down)
This can be done by JBossOn an additional administration server for administration and monitoring
Just a remark, with the master/slave thing i discovered that the masternode has at least 20-40 more threads open and doing some stuff compared to the slave nodes. Another thing i discovered was the failover was in avg. a bit slower failing over from slave to master instead from master to slave. It can be that it was a statistical inaccuracy but it was a bit strange. Didnt know it affects it measureable.