Work has been steadily progressing in RHQ to introduce a new "provisioning" feature. Our beta will soon be released, and as part of our getting ready of that release, I put together a quick flash demo that illustrates our current state of this provisioning feature.
There is still much more work to get done - the new GWT GUI is continually improving and we need more provisioning support for things like starting, stopping and installing services being provisioning, orchestration between machines in a cluster (to support provisioning software within a cluster) and other things. But what we have is a good base framework to build upon - watch the demo if you want to see what we have now.
For more information, we have documentation on our wiki: