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SNMP

check_snmpv2.pl

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Description:

Script is used to check values of snmp enabled devices, such as Brocade switches, IBM Blade Chassis, Cisco devices…etc.

I added option for port. Added output to the first line if there is a critical or warning and a counter for number of checks OK.

Current Version

1.7.0

Last Release Date

2012-01-13

Compatible With

  • Nagios 3.x
  • Nagios 4.x
  • Nagios XI

Owner

lane

License

GPL

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Project Files
FileDescription
check_snmpv2.pl
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Project Notes
USAGE: check_snmp.pl -H hostname -C community -p port -V version -t Title -O label:oid:warn:crit:[(l)less than | (g)greater than]:[(a)text|(n)number You can enter multiple oid's, but the format MUST be ( label:oid:warn:crit:g:n,label:oid:warn:crit:l:a,... ),comma seperated. Example (IBM Blade Chassis Voltages): check_snmp.pl -H testbc -C public -p 161 -V 1 -t TESTBC_volt -O plus5:.1.3.6.1.4.1.2.3.51.2.2.2.1.1.0:4:3:l:n,plus3.3:.1.3.6.1.4.1.2.3.51.2.2.2.1.2.0:3:2.6:l:n,plus12:.1.3.6.1.4.1.2.3.51.2.2.2.1.3.0:11:10.5:l:n,minus5:.1.3.6.1.4.1.2.3.51.2.2.2.1.5.0:-4:-3.7:g:n,plus2.5:.1.3.6.1.4.1.2.3.51.2.2.2.1.6.0:2.2:2:l:n,plus1.8:.1.3.6.1.4.1.2.3.51.2.2.2.1.8.0:1.5:1.2:l:n TESTBC_volt Status OK: minus5 = -4.93 OK: plus2.5 = 2.48 OK: plus1.8 = 1.76 OK: plus3.3 = 3.26 OK: plus5 = 4.84 OK: plus12 = 11.78 | minus5=-4.93;-4;-3.7;0; plus2.5=2.48;2.2;2;0; plus1.8=1.76;1.5;1.2;0; plus3.3=3.26;3;2.6;0; plus5=4.84;4;3;0; plus12=11.78;11;10.5;0; Example (Text Based Check value): check_snmp.pl -H intbc -C public -p 161 -V 1 -t TESTBC_DIMM11 -O DIMM:.1.3.6.1.4.1.2.3.51.2.2.8.2.2.1.4.112:DIMM:dimm:x:a TESTBC_DIMM11 Status CRITICAL: DIMM = "DIMM 11" | Nagios Command Definition: define command{ command_name check_snmpv2 command_line $USER1$/check_snmp.pl -H $HOSTNAME$ -C $ARG1$ -p 161 -V $ARG2$ -t $ARG3$ -O $ARG4$ }
Reviews (3) Add a Review
Working as documented except for the less and greater triggers
by RedFish, February 28, 2014
I had to modify the operators at lines 71,77,89 and 95 because they were "greater or equal" and "less or equal" instead of simply ">" or "Something I missed was the possibility to use directly textual MIB instead of the numeric OID, I saw that by using NetSNMP::OID it should be possible but did not have the time to try.
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"use strict" blues
by rafamiga, December 31, 2012
I've patched the plugin to work with pragma "use strict" which apparently my Nagios3 uses...

Here's the patch:

http://orfika.net/src/check_snmpv2.pl.patch
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Why?
by willix, January 31, 2012
I don't want to discourage you (and starting like this is a good way to get some practice writing nagios plugins) but why are you writing this? Your script is not really a perl plugin because it relies on retrieving SNMP with external command. As such its just a wrapper and we already have check_snmp included with nagios plugin, written purely in C, and that can retrieve data from multiple SNMP OIDs and compare values. There is also at least one other alternative check_snmp (which is faster but does not work with SNMP v3), just look around exchange.

And if you want temperature I recommend you just download check_snmp_temperature.pl. Take a look at how its code too to learn how to write nagios plugins in Perl that retrieve data by SNMP. Then consider what is needed for your setup and write a new perl plugin (if it does not already exist) that you'd be proud of.
Owner's Reply:

Yeah, I've been writing plugins for nagios/netsaint for over a decade now.

There are lots of plugin scripts out there that are wrappers. And most scripts that utilize protocols, need to wrap themselves around libraries.

The check_snmp plugin does not take into consideration the output a device will generate. It is not that good, but a good start for most people.

I have seen lots of scripts which give you this output, or that output, but never one I can ask for whatever output I am looking for. So I wrote script that is easy enough to do just that. I can use this script to check every OID on any any device, and out put the data so it is useful for performance data or not.

Yes, I am proud of all of my code. Because I wrote it, and it works, and it is simple to understand and expand upon.

0 of 1 found this review helpful.
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