Nagios/check_snmp_service at master · ofalk/Nagios · GitHub

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#!/bin/bash

#set -x

#----------------------------------------------------------------------
#
# Author: Martin Fuerstenau, Oce Printing Systems
# Date:   5.7.2008
#
# Purpose:
# Check the function of the SNMP service it self and report version and operating system
#
# How it works:
#
# It tries to get SNMPv2-MIB::sysDescr.0. Because this is a standard value it should work
# on all operating systems. Beside the OK message it displays the contet of sysDescr.0
# and so you can mostly see which OS/Release is installed.
#
# Changes:
#
# - None
#
# Synopsis:
#
# /usr/lib/nagios/ops_plugins/check_snmp_service -H <ip-address/hostname> -C <comminunity>
#
#----------------------------------------------------------------------


export SCRIPT_NAME=`basename $0`
export RETRY=7

export NP=0
export NoA=$#

function usage()
{

echo
echo "Usage: $SCRIPT_NAME [Options]"
echo
echo "Options: -H <ip-address/hostname>"
echo "         -C <community>"
echo "         -h for help"
echo
}

###############################################################
# --- MAIN - Hauptverarbeitung --------------------------------
###############################################################

if [ $NoA -lt 4 ] || [ $NoA -gt 4 ]
   then

   if [ $NoA -eq 1 ] && [ $1 = "-h" ]
      then
      usage
      exit 0
      else
      echo
      echo "Invalid number of arguments supplied"
      usage
      exit 3
   fi
fi

if [ $NoA -eq 4 ]
   then
   # Um die Funktion in Nagios Variabel nutzen zu können, wird in check_commands.cfg IMMER
   # die Option -f angegeben. Wenn aber kein Wet übergeben wird muss trotzdem -f verarbeitet
   # werden. In diesem Fall mit dem Null-Befehl

   while getopts H:C: OPTION
         do

         case "$OPTION"
              in

              H) HOST=$OPTARG ;;

              C) COMMUNITY=$OPTARG ;;

              \?) echo
                  echo "Invalid command arguments supplied"
                  usage
                  exit 3;;
         esac
   done

fi

#--------------------------------------------------------------------------------------------------------------

DESCR=$(snmpget -c $COMMUNITY -v1 -On $HOST .1.3.6.1.2.1.1.1.0 2>/dev/null)
RETCO=$?

if [ $RETCO -ne 0 ]
   then
   echo "Critical! SNMP is not accessible. Please check!"
   exit 2
fi

DESCR=$(echo $DESCR | sed 's/^.*STRING://' )

if [ $RETCO -eq 0 ]
   then
   echo "OK! SNMP is  accessible.SNMP output:<br>$DESCR"
   exit 0
fi