Using the Negate Plugin
This document is designed to assist Nagios administrators in understanding and using the Negate plugin in Nagios® XI™. The Negate plugin allows for any standard plugin output to be reversed and is very useful with hosts or services that are expected to be in a Critical or Warning state but you wish to show them as OK. This function can be used for the opposite effect (i.e. showing a CRITICAL state when the output is OK).