Nagios Plugin Wrapper Module

[Robert "Bruce" Carleton]

I'm experimenting with a module that wraps nagios plugins.  I figured I'd share 
and see if others are doing anything like this.  I wanted to be able to set 
classes based on the results of the nagios plugin execution.  Here's the module 
shell script:

#!/bin/sh
PREFIX=/usr/local/libexec/nagios
PLUGIN=${1}
shift 1
OUTPUT=`$PREFIX/$PLUGIN $*`
EXIT=$?
/bin/echo "=output=$OUTPUT"
case "$EXIT" in
        '0')
                echo "+nagios_plugin_${PLUGIN}_ok"
        ;;
        '1')
                echo "+nagios_plugin_${PLUGIN}_warning"
        ;;
        '2')
                echo "+nagios_plugin_${PLUGIN}_critical"
        ;;
        '3')
                echo "+nagios_plugin_${PLUGIN}_unknown"
        ;;
esac

Here's the bundle I'm using for testing:

bundle agent nagios_mailq_check
{
classes:

"nagios_mailq_alert" or => {
        "nagios_plugin_check_mailq_warning",
        "nagios_plugin_check_mailq_critical",
        "nagios_plugin_check_mailq_unknown"
        };

commands:

my_mta_host.Hr00::

"/usr/local/cfengine/modules/nagios_plugin_wrapper check_mailq -w 10 -c 20"
        module => "true";

reports:

nagios_mailq_alert::
                "$(nagios_plugin_wrapper.output)";
}

My test configuration is FreeBSD 7.3-RELEASE-p2, running cfengine-3.0.5p1 and 
nagios-plugins-1.4.15_1,1 from ports.

I guess there might be a better way to do this, but it's what I have so far.  
I'd be curious to know if anyone else is trying to do a generalized nagios 
plugin wrapper module.  I'm not suggesting this is a better way to do host 
checks, but there are a lot of people cranking out nagios plugins of various 
kinds.  I figured this would be a way to have Cfengine be able to make use of 
that work.

Best,

                        --Bruce



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