mrped

#!/usr/bin/env zsh

# MK's Remote Plugin Executor NG ;-)
#
# Workaround for check_mks inability to use scripts from a mrpe.d directory
# http://lists.mathias-kettner.de/pipermail/checkmk-en/2013-February/008646.html
#
# Make sure mrpe.cfg doesn't exist, or you will end up with two <<<mrpe>>>
# output sections.
#

set -o pipefail

if [[ -e /etc/mrpe.conf ]]
then
    echo "mrpe.conf should not exist when running mrped"
    exit 1
fi

if [ "$(ls -A /etc/check_mk/mrpe.d)" ] ; then
    echo '<<<mrpe>>>'
    grep -rhEv '^[[:space:]]*($|#)' "/etc/check_mk/mrpe.d" |
    while read descr cmdline
    do
        (
            PLUGIN=${cmdline%% *}
            OUTPUT=$(eval "$cmdline" | tr \\n \\1)
            echo -n "(${PLUGIN##*/}) $descr $? $OUTPUT"
        )&
        pids=(${pids[@]} $!)
    done
    for j in ${pids[@]}; do
      wait $j &> /dev/null
    done
fi

Should probably do this with GNU Parallel instead.

Paralysed! :-) Thanks Farhad!

Downside: Currently its a drop in replacement ; GNU Parallel isn't installed on all systems and adds an additional dependency.