#!/bin/bash
#
# only-one-cfexecd.cron
#
# Description: This script cleans up Cfengine cf-execd processes, in
#              case there are more than one of them running.
#
# Author: Trond Hasle Amundsen <t.h.amundsen@usit.uio.no>
#

# Set proper path
PATH=/bin:/sbin:/usr/bin:/usr/sbin
export PATH

# Find the number of cf-execd processes
num=$(pidof cf-execd | wc -w)

# Fix if needed
if [ $num -gt 1 ]; then
    hostname=$(hostname)
    tmpfile=$(mktemp)
    (
	echo "DEBUG: Stopping cf-execd (service cf-execd stop):"
	service cf-execd stop
	echo "DEBUG: Killing remaining cf-execd processes (killall cf-execd):"
	killall -v cf-execd
	echo "DEBUG: Starting cf-execd (service cf-execd start):"
	service cf-execd start
    ) >$tmpfile 2>&1

    new_num=$(pidof cf-execd | wc -w)
    if [ $new_num -gt 1 ]; then
	echo "$hostname had $num cf-execd processes running."
	echo "There should be only one."
	echo
	echo "Tried restarting cf-execd, but something went wrong."
	echo "After restart there are $new_num cf-execd processes running.."
	echo "Debug output follows:"
	echo
	cat $tmpfile
    fi
    rm $tmpfile
fi

# Exit properly
exit 0