Implement a reliable, light weight, with auto discovering solution to communicate the Task Service Server with the Client

Implement a reliable, light weight, with auto discovering solution to communicate the Task Service Server with the Client.
At this moment this is achieved using MinaTaskServer and MinaTaskClient, and this stop to work if the Server stops.
The main idea here is to use JGroups (this is my first option) to implement a service of auto discovering, reliable, light weight and configurable solution. That allow us to have the client and many possible server not binded by IP addresses but joined in some kind of group.