Munin Plugins – CrashPlan Monitoring and Hard Drive Spinning State
Ever since I have installed Munin, I have been noticing system statistics that I would like to monitor that the built-in plugins do not. I have written two Munin plugins and I’d like to share them, as simple as they are. Munin doesn’t require a lot when it runs its plugins. The only necessary steps to writing a plugin can be learned in just a few minutes. A guide to writing plugins can be found on Munin’s website.
The first plugin I have written is one that will graph the spinning state of a specified hard drive. At the time I wanted to keep track of whether or not my drives were spinning. After realizing that it is best to keep my drives spinning, I have since turned off drive sleep. Never the less, the plugin graph is shown below.
Source code for hddsleep_.
The second and more interesting plugin I have written is one that will monitor the status of the incoming backups to my NAS from my family’s CrashPlan clients. This plugin will produce multiple graphs; one set for each computer that is backing up to the computer that Munin is monitoring. Two graphs will be created for each incoming backup: a remaining backup size and a backup state. Two graphs are linked below, but they can be hard to read. Clicking on these graphs will show a page detailing each individual computer.
Source code for crashplan.
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