check-disk-snmp

A Nagios plugin to checking disk usage on remote systems via SNMP, using the values provided via UCD-SNMP-MIB:dskTable (.1.3.6.1.4.1.2021). This MIB table is used in favor over the others since it gives a fuller set of values, such as inodes used and percentages, as well as the thresholds configured for trapping.

Requirements

This script is currently written for Python 2.7+, but uses the Python future library to provide the print() function.

Installation

At this moment, the installation is to manually copy the check-disk-snmp.py script to the Nagios plugin directory (e.g. /usr/lib64/nagios/plugins)

Example

CLI Usage

$ check-disk-snmp.py -H panparis -C public -w 80%,50%i -c 90% /tmp
OK dskPercent=14 dskPercentNode=0

Nagios command definition

define command {
    command_name        check_remote_disk
    command_line        $USER1$/check-disk-snmp.py -H $HOSTADDRESS$ -C public -w $ARG1$ -c $ARG2$ $ARG3$
}

Nagios service definition

define service {
    use				remote-service
    host_name			nas
    service_description		mirrors:centos Partition
    check_command 		check_remote_disk!80%!90%!/mirrors/centos
}

Known issues

• Some partitions will cause the command to fail with the error of AttributeError("'DisplayString' object has no attribute 'strip'",)

License

This software is open-sourced software licensed under the Mozilla Public License, v2.0

Author Information

This plugin was created 2018 July 17 by Douglas Needham.