Monitoring Interface Bandwidth Utilization Using Cacti Data

Description

This Python plugin will alert when the average bandwidth utilization of a network interface exceeds the configured thresholds. It uses data that is already being captured on a remote (or local) Cacti server rather than storing data in a local database. Max Speed for an interface is found via SNMP. In order for this plug-in to work you need to map Cacti Graph ID's to the SNMP IfIndex value of the device you are monitoring. Instructions and a script for easily generating this map can be found on my website. Plugin Usage: check_port_saturation.py -H HOST -g GRAPH_ID [-s CACTI_SERVER] [-c CRIT] [-w WARN] [-V {1,2,3}] [-C SNMP_COM] -i IF_INDEX ('-H', '--host', required=True, help='Host we are checking') ('-C', '--snmp_com', default='public', required=True, help='SNMP community') ('-V', '--snmp_ver', type=int, default=2, choices=[1, 2, 3], help='SNMP version') ('-g', '--graph_id', required=True, help='Cacti graph id') ('-s', '--cacti_server', required=True, help='Cacti server hostname') ('-c', '--crit', default=90, type=int, help='critical saturation level in %') ('-w', '--warn', default=80, type=int, help='warning saturation level in %') ('-i', '--if_index', required=True, help='ifIndex value for snmp') Example of running from command line: porter@nagios:~$ ./check_port_saturation.py -g 23822 -s netprobe -H dist1 -i 369098807 -C public SUCCESS: Avg_In= 1405.02 Mbps and Avg_Out= 777.29 Mbps

Project Details