Check_snmp INVERTER

Project Notes

The purpose of this plug-in is to invert the output of the "check_snmp" plug-in when you need to check an inverted scale. For example, one needs to know when the input voltage of an UPS drops to zero => an error, as the power line is in fault, but not having problems when the same check is 220V in normal conditions.
With the normal "check_snmp" you can't check this limits, as the check will always be in error.

Usage: ./check_snmp_inverter.sh -H <remote_host_IP> -C <comunity_string> -o <OID> -w <warning value> -c <critical value> -u <measure block> -l <label>

The critical value is the real value that one needs to set for example 0 and the warning value is greater then the critical - ex: 240.

Notice:
- At the moment the script does not work with outputs that do not give performance data (ex: some time related SNMP checks "SNMP OK - Timeticks: (427168862) 49 days, 10:34:48.62")