[Nagiosplug-help] check_snmp plugin always showing OK

David Callahan dwcallahan at gmail.com
Sat Jul 23 00:00:24 CEST 2011

I'm having some difficulty with check_snmp.  This is probably something
rather simple but I'm stumped.  I have 2 nagios servers one running OMD 48
and the other was a compile of nagios 3.2.3 with the plugin package.

Basically I have a temp probe that I'm trying to monitor warning and
critical temps.  Here goes..

define host{
use generic-host
host_name sensor1
max_check_attempts 1
alias Temp Sensor 1
check_command check_snmp!-C public -p 161 -o
normal_check_interval 10
retry_check_interval 1
address x.x.x.x
hostgroups sensors

define service{
use generic-service
host_name sensor1
service_description Room Temp
check_command check_snmp! -o -w at 75:79 -c:80

This is what is displayed in check_mk with the -v

/usr/bin/snmpget -t 1 -r 5 -m '' -v 1 [authpriv] x.x.x.x:161 Long output of check plugin
= STRING: "77.68"
SNMP OK - "77.68" Service performance data
Service check commandcheck_snmp! -o -w at 75:79 -c:80
I have another command such as check_snmp!-c public -p 161 -o -r "PWR OK" that works fine so I have no idea why
the other check command is not giving a warning in nagios.

Any help is welcome!!


Dave Callahan
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