#!/bin/bash
#    ____  ____  ____________
#   / __ \/ __ \/_  __/ ____/
#  / /_/ / /_/ / / / / / __
# / ____/ _, _/ / / / /_/ /
#/_/   /_/ |_| /_/  \____/
#    NETWORK MONITOR
#-------------------
#(c) 2016 Dariusz Gorka, Paessler AG
#
#This script checks if a certain service is running.
#The script also tries to restart the service if it is not started.
#

#Enter the correct process name. (ps -e)
service=$1
#Enter the server address of your PRTG, including HTTPS/HTTP and the sensor port.
prtghost=$2
#Enter the Identification Token of the HTTP Push Data Advanced sensor.
identtoken=$3

#Check if process is running
if (( $(pgrep -x $service | wc -l) > 0 ))
  then
    #Send response to PRTG that the service is running.
    wget -O/dev/null "$prtghost/$identtoken?content=<prtg><result><channel>$service status</channel><value>1</value></result><text>Service: $service is running!</text></prtg>"
  else
    #Send response to PRTG that the service is not started.
    wget -O/dev/null "$prtghost/$identtoken?content=<prtg><result><channel>$service status</channel><value>0</value></result><text>Service: $service is down, but will restart!</text></prtg>"
    #Try to restart the service
    /etc/init.d/$service start

    #Check if restart was successfully
    if (( $(ps -ef | grep -v grep | grep $service | wc -l) > 0 ))
      then
        #Send response to PRTG that the restart was successfully
        wget -O/dev/null "$prtghost/$identtoken?content=<prtg><result><channel>$service status</channel><value>1</value></result><text>Service: $service restarted properly!</text></prtg>"
      else
        #Send response to PRTG that the restart was not successful
        wget -O/dev/null "$prtghost/$identtoken?content=<prtg><result><channel>$service status</channel><value>0</value></result><text>Service: $service can't restart properly! Please take action!</text></prtg>"
      fi
fi