Finally, this is out there and we can talk about this. This is
being done in three phases, Cluster Agents and test tools are
being open sourced right now, more stuff to follow later.
The Official announcement is here
If you just wanna browse code for various Cluster Agents, start here: Agent code
Here is a story on Yahoo about it.
The Open HA Cluster community page has lot more info and links on it.
Check it out.
-ashu