NOTE: This project is effectively discontinued since it appears someone else had similar starting goals and spent a lot more time and effort getting it done properly than the little spent by me due to necessity: http://god.rubyforge.org/
This project is kept for now but will probably be deleted.
A minimalistic monitoring system that is intended to be:
Self-contained (no web server needed). Fairly minimalistic (it does require Ruby, but is otherwise small). Network transparent. Suitable for trivially plugging in custom sensors and using them reliably, without putting extreme requirements on the quality of the sensors themselves. It is specifically designed for cases where there is no infrastructure in place, and where such infrastructure is not feasable. Typically single machines, or a small collection of machines.