Munin is a tool for graphing all sorts of information about one or
more servers and displaying it in a web interface.  It uses the
execellent RRDTool (written by Tobi Oetiker) and is written in Perl.
Munin has a master/node architecture.  The master connects to all the
nodes at regular intervals, and asks them for data.  It then stores
the data in RRD-files, and (if needed) updates the graphs.  One of the
main goals has been ease of creating own "plugins" (graphs).

This package manages the common components used by both master and
node munin packages.