check_iferror.py

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Description:

Nagios plugin to check interface error count OIDs via SNMP, caching the result and alerting if the user defined threshold in the user defined timeframe is reached.

Optionally:
– Checks operational state of the interface as well. Works with Counter32 and HexString values;
– Returns perfdata;
– Supports preset OIDs;

Caveats / todo:
– Supports SNMPv1 only.
– For simplicity uses filesystem mtime
– Tested with Python 2.6, 2.7 (should work with 2.4, though)
– Needs python > 2.6, pysnmp > 4.2.5, python-argparse. On older systems use ‘pip’ or easy_install to get get a corresponding version of pysnmp if the package system’s version is too old.

Current Version

0.6

Last Release Date

2013-12-28

Compatible With

Nagios 2.x
Nagios 3.x

Owner

Daniel Helgenberger

License

GPL

File	Description
check_iferror.py	Python plugin

$ ./check_iferror.py -h usage: check_iferror.py [-h] -H HOST [-C COMMUNITY] [-o OID] [-O IFOID] [-S IFUPSTATE] [--warnifdown] [--okifdown] [-i INTERFACE] [--preset PRESET] [-P PORT] [-w WARNING] [-c CRITICAL] [-t TIME] [-s SCRATCH] [-p] [-d] [-T] [-V] Nagios plugin, interned to check error count OIDs via SNMP. A non-zero exit code is generated, if the counter delta exceeds the waring / critical values inthe evaluation time period. Additionally the plugin checks for the interface state if arguments --ifoid and --ifupsate are supplied. The plugin will exit critical/warning if the the interface is down.Recommendation: Use longer check_intervals with a low recheck count. optional arguments: -h, --help show this help message and exit -H HOST, --host HOST SNMP Agent IP / hostname -C COMMUNITY, --community COMMUNITY Read community name (default: "public") -o OID, --oid OID Error count base OID -O IFOID, --ifoid IFOID Interface base OID -S IFUPSTATE, --ifupstate IFUPSTATE Expected interface operational state (integer) --warnifdown Exit with warning instead of critical if interface is down --okifdown Exit with ok instead of critical if interface is down -i INTERFACE, --interface INTERFACE Interface number. Appended to the base OID --preset PRESET Use OID preset -P PORT, --port PORT SNMP port -w WARNING, --warning WARNING Warning threshold (Count) -c CRITICAL, --critical CRITICAL Critical threshold (Count) -t TIME, --time TIME Evaluation time period. (in hours, default 24h) -s SCRATCH, --scratch SCRATCH Scratch / temp base directory. Must exist. (default: /tmp) -p, --perfdata Print performance data, (default: off) -d, --debug Verbose mode -T, --test Run test case; needs WAN connection -V, --version show program's version number and exit Currently only SNMPv1 and plain OIDs are supported. Needs python > 2.6, pysnmp > 4.2.5, python-argparseThis program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or at your option) any later version. Author: Daniel Helgenberger

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check_iferror.py

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