Munin is a PnP networked resource monitoring tool ideal for use in computer systems, networks and infrastructure. It provides monitoring and alerting services for servers, switches, applications, and services. Additionally, it alerts the users when things go wrong and alerts them a second time when the problem has been resolved.
Munin works by surveying all your computers and remembers what it saw. It then presents all the information in graphs through a web interface. After completing the tool’s installation, a great number of monitoring plugins will be playing with no more effort.
With Munin, you can easily monitor the performance of your computers, networks, SANs, applications, weather measurements among many others. It makes it easy for users to determine “what’s different today” when a performance problem crops up.
Munin uses the excellent RRDTool 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 Munin’s main goals has been to ease the creation of new plugins (graphs).
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