Nagios check_snmp reverse – CRITICAL=0 OK=1

-w=-85: -c=-80: is the syntax I needed, but check_snmp still converts the output to positive when an error is triggered. Bug report filed.

We use check_snmp_process.pl, which does the job nicely for us.

define command {
        command_name    check_at_least_one_proc
        command_line    $USER1$/check_snmp_process.pl -H $HOSTADDRESS$ -C your-community-here -n $ARG1$ -c 0
}
define command {
        command_name    check_only_one_proc
        command_line    $USER1$/check_snmp_process.pl -H $HOSTADDRESS$ -C your-community-here -n $ARG1$ -c 0,2
}
define command {
        command_name    check_proc_range
        command_line    $USER1$/check_snmp_process.pl -H $HOSTADDRESS$ -C your-community-here -n $ARG1$ -c $ARG2$,$ARG3 -w $ARG2$,$ARG3$
}

define service {
        use                             generic-service
        hostgroup_name                  snmpenabled
        service_description             NTP
        check_command                   check_at_least_one_proc!ntpd
}