[Linux-HA] Nagios Monitoring

[Thomas Glanzmann]

Hello,
I would like to monitor my linux-ha installation using nagios and I
wonder if someone has done work on it. Because I would like to use that.
However I am also perfectly capable of writing my own module. But before
I would like to know what I can check and what the best way is to check.
My ideas are the following:

        - Heartbeat monitoring (I can do that using cl_status)

        - Service Monitoring (crm_mon -1 -r):
                - Not running
                - Failed Services

Is there something else I could monitor or a tool or command line
options that monitor better what I would like to monitor?

        Thomas