After reviewing the open-source monitoring tools for their usefulness
in the context of our own OpenACS systems, we (OpenForce) decided on a
NetSaint-based monitoring system. Our goal was not only to monitor our
own servers, but to start the discussion of a comprehensive OpenACS
monitoring system (that also monitors mailservers, the UNIX layer,
postgres, etc) that could, in the future, be integrated into OpenACS.
I'm in LA at the moment, but when I get back to New York tommorow, I'll post some of our thinking on this topic.
Also, I'm in the process of writing some documents about using
NetSaint as a OpenACS monitoring tool. This could be the basis of
a guide. Let me know if you (or anyone) would like to collaborate
on this.