Alerting if host not using at least certain CPU and memory

[robert.anderko]

I am using Nagios XI 5.2.9. I am needing to find a way to alert if hosts across my infrastructure are not being fully utilized. Looking for something like if host check has not seen at least 50% CPU or memory in 7 days/last month then alert staff to look at adjustments.
Thanks in advance.

[tmcdonald]

Alerting based on a time range can either be done at the plugin level, or if the plugin does not support this you can do it using an open-source project called Bischeck:

https://assets.nagios.com/downloads/nag ... ios-XI.pdf

Basically you can define averages, minimums, and maximums for the last X number of checks. This doc only goes into averages, but the linked Bischeck references should help with any additional usage issues you run into.