Munin

After the Munin YUM update, I got this error in my browser when I visited my Munin web interface:

Munin has large collection of plugins included in core plus its contrib plugins. These plugins are scripts are executed by munin-node and reports back different statistics that Munin master monitors. This article will help understand about Munin plugins, this is a continuation of Setup Munin on CentOS 7 with nginx.

The Munin's generated web pages are very old fashioned and dull. Its design uses tables with small text and too much spaces. This guide will show how to change the Munin's template and should be continuation of Setup Munin on CentOS 7 with nginx. There will be two alternative Munin 2.x templates will be shown here:

1. Munin Dynamic Template

This alternative template uses jQuery and Twitter Bootstrap for Munin 1.x and 2.x versions that enhanced user experience and improve web pages' appearance. The following are the steps to setup this template:

Munin provides web interface showing graphs about your server's load average, memory usage, CPU usage, MySQL throughput, eth0 traffic, etc. Although it lets you monitor more than one server, this article will discuss the monitoring of the system where it is installed. The following steps are tested running on my Linode server running Centos 7 64-bit. It is assumed that nginx is already installed in your system. If not, please follow this guide.