Nagios Support Forum

What is the exact Mongo version you are running, and what XI and check_mongodb.py versions are you running?

Your Nagios XI installation is up to date.
Latest Available Version: 5.2.3
Installed Version: 5.2.3
Last Update Check: 2015-12-22 14:01:02

I am not seeing a version for the plugin.

We are running mongo 3.0.6

Sorry for the delay in response!

Can you check your mongod.log file for any errors and post them here?
If you see authentication errors with mechanism MONGODB-CR, take a look at the link below to change the authSchema version to 3 instead of 5.
http://stackoverflow.com/questions/2900 ... ion-failed