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Writing a Nagios/Icinga Plugin using PHP

2.09.2010

Note to self: If you want to write a check plugin for Nagios / Icinga using PHP, remember the following things:

Start the first line of the script with #!/usr/bin/php -q
Don’t put any empty lines between the shebang and the opening php tag (<?php)
Return values are either 0 (OK), 1 (WARNING) or 2 (CRITICAL)
Return those values using exit(), not using return()
Before the exit statement, return some info using echo. Nagios / Icinga will only display the first line of the output.

Geschrieben von: danilo
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Kommentare

helligusvart hat am 2.09.2010 um 09:57 kommentiert:

[New Post] Writing a Nagios/Icinga Plugin using PHP http://blog.ich-wars-nicht.ch/2010/09/wr... – via #twitoaster

rossixx hat am 21.03.2011 um 16:40 kommentiert:

what do you know about the performance data if you write a own plugin ???

danilo hat am 21.03.2011 um 16:53 kommentiert:

@rossixx: I don’t quite understand your question. Are you talking about the usage of PHP? Or about Nagios/Icinga plugins in general?

rossixx hat am 21.03.2011 um 18:08 kommentiert:

Nagios !

send Performance Data by the plugin.

danilo hat am 21.03.2011 um 18:11 kommentiert:

Ah. I don’t think you can send actual performance data to Nagios. The main return value is either OK, WARNING or CRITICAL. But you can echo some string, which will be used as the status message and could be parsed.

But I might be wrong.

rossixx hat am 21.03.2011 um 21:20 kommentiert:

no. you are right. the plugin send a string back to nagiuos

first part is 0, 1, 2 or 3 | and the other part is used as performance date or what ever you want.

but my problem is how to tell the right nagios what is which part of the fu**ing post…

Dave hat am 24.11.2011 um 13:08 kommentiert:

I want to use a self-written nagios plugin by nrpe, but i get “NRPE: Unable to read output” but on the client everything is okay (test with echo $?)

danilo hat am 24.11.2011 um 13:39 kommentiert:

@Dave: Sorry, I don’t use NRPE (in fact I don’t currently run Nagios at all), so I don’t know about that. Try to check the output and the return status of your plugin.