Additional Munin plugins

This repository contains my personally curated and somewhat biased selection of high-quality user-created Munin plugins.

Motivation

The munin/contrib repo is a wonderful source of munin plugins, but the quality is widely varying and things aren't documented that well.

While that's inherent to a user contributed repository, it leaves me wanting for a more extended version of the core plugins. This is where this repository comes in.

I found myself writing quite a few one-off munin plugins of poor quality, so I decided to clean them up and bundle them in a single package.

Plugins

See below for a brief description of the plugins, in alphabetic order. More detailed descriptions are available in the specific plugins themselves.

milter_greylist

Monitor the number of whitelisted/greylisted tuples for the milter-greylist plugin for postfix.

Possibly needs to run as postfix in order to read the greylist database. Tested on Ubuntu 14.04 and 16.06.

pacman

Monitor the number of updates pending, with warnings for updates.

rpi_cputemp

CPU temperature measuring for the Raspberry Pi using the Raspberry Pi firmware. Tested with a Raspberry Pi 2b.

systemd_services

Monitor a specific set of systemd plugins, and send warnings on failure.

Use the env.services directive to specify plugins to send warnings for, and use env.critical_services to specify plugins to send critical warnings for.

Contributing

Feel free to send a pull request with a plugin that would fit in here. For your contribution to be considered, try to make sure that

• the plugin is written in a fast scripting language (noone like the jvm startup times)
• you specify a meaningful autoconf operation
• you don't require configuration outside the munin plugin configuration
• you don't have any dependencies not already present by default on a system running that which you are trying to monitor
• the plugin submitted is not already present in the munin-node package of the major distros (Centos, Ubuntu, Debian, Arch Linux)

That last one is important, as most Linux distributions already include some of the better contrib plugins since the core plugins are somewhat limited.

License

The source code is available under the MIT license. That means you can do pretty much anything, as long as you give me credit