Munin

Install Munin to a client

First you need to install munin client package using the following commands

   sudo apt-get install munin-node

Now you need to edit the munin-node.conf file to specify that your monitoring server is allowed to poll the client for information.

   sudo vi /etc/munin/munin-node.conf

Search for the section that has the line "allow ^127\.0\.0\.1$". Modify the IP address to reflect your monitoring server's IP address.If your server ip is 172.30.2.100

   allow ^\.172\.30\.2\.100$

Save and exit the file

You need to restart the munin client using the following information

   sudo service munin-node restart

Now you need to login in to your munin server and edit the munin.conf file

   sudo vi /etc/munin/munin.conf

Copy the following section and change the ip address to your remote server client ip address

   [MuninMonitor]
   address 127.0.0.1
   use_node_name yes

to

   [MuninMonitor]
   address 172.30.2.101
   use_node_name yes

Finall you need to restart the apache server using the following command

   sudo service apache2 restart

Add variables

/usr/sbin/munin-node-configure --suggest
/usr/sbin/munin-node-configure --shell | sh
/etc/init.d/munin-node restart

Additional Plugins

The munin-plugins-extra package contains performance checks additional services such as DNS, DHCP, Samba, etc. To install the package run the following command from the terminal

   sudo apt-get install munin-plugins-extra

Make sure you have install this package on both the server and node machines.

Info from: http://www.ubuntugeek.com/install-munin-monitoring-tool-on-ubuntu-14-04-server.html