This is a simple how to on how to install Munin for Ubuntu server 7.10.

Step 1: must have an ubuntu server or an ubuntu derivitive (like Xubuntu as I am not sure what will happen.)

Step 2: sudo apt-get install munin munin-node.

Step 3: Now you need to decide where to put the output: chown munin:munin mydir where mydir must be something you choose.

Step 4: Open /etc/munin/munin.conf with nano: sudo nano /etc/munin/munin.conf

Step 5 Change the htmldir to the folder you chose for the output.

Step 6: Now you need to restart munin: /etc/init.d/munin-node restart

Now your done!

Source http://tombuntu.com/index.php/2007/07/16/monitor-your-linux-server-with-munin/