I’ve just announced a rather large update to the Linux-HA documentation.
We now finally have a Developer’s Guide for OCF resource agent authors and contributors. If you want to write a new resource agent to bundle with your project, or plan to send a patch for an existing resource agent, then this guide is for you.
In addition, we’ve released a new version of the Linux HA User’s Guide, which is the definitive reference and handbook for Heartbeat users.
PDF versions of these are, as always, available from LINBIT’s web site.