If you try now to install Munin monitoring for MongoDB database, you’ll find in the Mongo’s documentation, a link to an repository for munin plugins. The bad thing is this repository were updated for the last time on Feburay 2012. Of course, since 2012, MongoDB evolved and this plugins were not working at all on a recent version of MongoDB (2.6+).
Principally because MongoDB now removed the auto activation of the rest server (for security reasons). Continue reading Monitoring MongoDB in Munin on Ubuntu (updated)