#!/bin/bash
#
# Process monitor plugin for Nagios
# Written by Thomas Sluyter (nagios@kilala.nl)
# By request of KPN-IS, i-Provide, the Netherlands
# Last Modified: 13-07-2006
# 
# Usage: ./check_solaris_processes
#
# Description:
# This script couldn't be simpler than it is. It just checks to see
# whether a predefined list of processes is up and running. 
#
# Limitations:
#   This script should work properly on all implementations of Linux, Solaris
# and Mac OS X.
#
# Output:
# If there one of the processes is down, a CRIT is issued.
#

# You may have to change this, depending on where you installed your
# Nagios plugins
PROGNAME="check_linux_processes"
PATH="/usr/bin:/usr/sbin:/bin:/sbin"
LIBEXEC="/usr/local/nagios/libexec"
. $LIBEXEC/utils.sh


### DEFINING THE PROCESS LIST ###
LIST="init"


### REQUISITE NAGIOS COMMAND LINE STUFF ###

print_usage() {
        echo "Usage: $PROGNAME"
        echo "Usage: $PROGNAME --help"
}

print_help() {
        echo ""
        print_usage
        echo ""
        echo "Basic processes list monitor plugin for Nagios"
        echo ""
        echo "This plugin not developped by the Nagios Plugin group."
        echo "Please do not e-mail them for support on this plugin, since"
        echo "they won't know what you're talking about :P"
        echo ""
        echo "For contact info, read the plugin itself..."
}

while test -n "$1" 
do
        case "$1" in
          --help) print_help; exit $STATE_OK;;
          -h) print_help; exit $STATE_OK;;
          *) print_usage; exit $STATE_UNKNOWN;;
        esac
done


### FINALLY THE MAIN ROUTINE ###

COUNT="0"
DOWN=""

for PROCESS in `echo $LIST`
do
        if [ `ps -ef | grep -i $PROCESS | grep -v grep | wc -l` -lt 1 ]
        then
                let COUNT=$COUNT+1
                DOWN="$DOWN $PROCESS"
        fi
done

if [ $COUNT -gt 0 ]
then
        echo "NOK - $COUNT processes not running: $DOWN"
        exit $STATE_CRITICAL
fi

# Nothing caused us to exit early, so we're okay.
echo "OK - All requisite processes running."
exit $STATE_OK