check_snmp: set negative warning/critical threshholds?

[acwell]

I need my warnings and critical thresholds for a SNMP value checked with check_snmp to be negative. Is this possible? I've tried just about everything I can think of to get this to work with no luck. This is for checking radio signal/noise levels, which are always negative.

I'd like, for example:

OK: -79 to +inf (in practice this will never be above zero, but in theory positive numbers are valid)
Warning: -80 to -89
Critical: -90 to -inf

[scottwilkerson]

This is possible with the following format:

Code: Select all

-w @-89:-80 -c @~:-90

https://nagios-plugins.org/doc/guidelin ... HOLDFORMAT