I’m having a VPS running on OpenVZ that I most of the push to the limit. On usual computers the most significant resource is the memory usage, however on a VPS like this there are a lot of other resources running out.

To get a notion of what happen when the server “crashed”/stopped responding I created a collection of scripts that use the rrdtool to store the statistics and generate nice graphics.

Complete System Monitoring

The program collects all variables found in /proc/user_beancounters and other system parameters.

Requirements

You will need python and rrdtool before running any programs.

Download and Installation

Download using git:

git clone http://src.endnode.se/git/csm

You will get two runnable files, one updating/collecting the data and another for generating the graphics.

Preferably you should make the update script start at system startup and the graph script should be called regularly by a cron daemon but that is not included here.