Munin is a networked resource monitoring tool that can help analyze resource trends and "what just happened to kill our performance?" problems. It is designed to be very plug and play. A default installation provides a lot of graphs with almost no work.

In Norse mythology Hugin and Munin are the ravens of the god king Odin. They flew all over Midgard for him, seeing and remembering, and later telling him. "Munin" means "memory".


Latest development release 2.99.3


This is the third "alpha" release before munin 3. Most, but not all functionality is implemented.

[documentation] [see on github] [download munin 2.99.3]

Latest stable release 2.0.25


Munin 2.0.25 contains bug fixes.

[documentation] [see on github] [download munin 2.0.25]

Munin plugin gallery


Browse description and graph images for Munin Plugins in the new Munin Gallery

About Munin

Munin the monitoring tool surveys all your computers and remembers what it saw. It presents all the information in graphs through a web interface. Its emphasis is on plug and play capabilities. After completing a installation a high number of monitoring plugins will be playing with no more effort.

Using Munin you can easily monitor the performance of your computers, networks, SANs, applications, weather measurements and whatever comes to mind. It makes it easy to determine "what's different today" when a performance problem crops up. It makes it easy to see how you're doing capacity-wise on any resources.

Munin uses the excellent RRDTool (written by Tobi Oetiker) and the framework is written in Perl, while plugins may be written in any language. Munin has a master/node architecture in which the master connects to all the nodes at regular intervals and asks them for data. It then stores the data in RRD files, and (if needed) updates the graphs. One of the main goals has been ease of creating new plugins (graphs).

Getting munin

Munin 2.0 is available in repositories for (at least) the following Linux distributions: Debian, Ubuntu, Fedora, Red Hat, Red Hat Enterprise Linux, Mandriva, Gentoo and is also available in FreeBSD ports.

Supported platforms

The munin master, node and most core plugins are written in Perl, The master requires perl 5.10 or newer. The node may run on older perls.

There are several alternative implementations of the munin node.


Plugins are small, standalone executables. They are easy to write, and can be written in any language. You can find many user contributed plugins in the contrib repository.


Munin can always need more help. Please see the list of tasks if you're looking for something to do.

Please visit our GitHub group and repositories. Due to the workload generated by spam robots and other automated vandalism, most project services has moved there.

Munin Live


Last modified at 2015-09-18T13:23:31+02:00 Last modified on 2015-09-18T13:23:31+02:00