Munin

Prerequisite
For the master server: For a node:
 * Nginx
 * Possibility to connect in SSH from the master server

SSH
If you want to collect data from nodes on other machines, you need to generate an SSH key to connect to them.

Simply run the following command and keep the default answers (key location:, no password)

Whitelist
If SSH users are whitelisted, edit file  and add   to the list.