nagios_check_unix_uptime

#!/bin/bash
# flip hess november 2011 [email protected]
# nagios check mhasmo check uptime

# Variables

  PATH='/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin'
  SCRIPT_PATH="${0}"

  DATE="$(date '+%Y%m%d-%H%M')"
  STATE_OK="0"
  STATE_WARNING="1"
  STATE_CRITICAL="2"
  STATE_UNKNOWN="3"

  KEY="/home/nagios/.ssh/id_dsa"

# Functions:

# The main function.
function fCheck()
{
  # check if arguments are valid:
  [ ! -z ${WARN} ] || { fShowUsage ; exit "${STATE_UNKNOWN}"; }
  [ ! -z ${CRIT} ] || { fShowUsage ; exit "${STATE_UNKNOWN}"; }

  # get info
  OUTPUT="$( uptime )"
  TIME="$(echo "${OUTPUT}" | awk '{print $4 }' | tr -d "," )"
  EMIT="$(echo "${OUTPUT}" | awk '{print $3 }')"

  # make results
  if echo "${UPTIME}"| awk '{print $4}' |tr -d "," |grep -q 'min'  ; then
     if [ ${EMIT} -gt ${WARN} ]; then
      { echo -e  "OKAY: Uptime of ${HOST} is more then ${WARN} minutes!\n${OUTPUT}" ; exit ${STATE_OK}; }
     elif [ ${EMIT} -lt ${WARN} ] && [ ${EMIT} -ge ${CRIT} ]; then
      { echo -e "WARNING: Uptime of ${HOST} is lower than ${CRIT} minutes!\n${OUTPUT}" ; exit ${STATE_WARNING}; }
     elif [ ${EMIT} -le ${CRIT} ] ; then
      { echo -e "CRITICAL: Uptime of ${HOST} is lower than ${CRIT} minutes!\n${OUTPUT}" ; exit ${STATE_CRITICAL}; }
     fi
  else
    { echo -e "OKAY: Uptime of ${HOST} is ${EMIT} ${TIME}\n${OUTPUT}" ; exit ${STATE_OK}; }
  fi
}

# The main function.
function fMain()
{
  #get options and set vars
  while getopts "w:c:v" OPTION ; do
    case ${OPTION} in
      w) WARN="${OPTARG}";;
      c) CRIT="${OPTARG}";;
      h) fShowUsage;;
      ?) fShowUsage;;
    esac
  done

  # trap de check af
  fCheck
}

# Shows usage.
function fShowUsage()
{
  echo "Usage: ${SCRIPT_PATH} [ -w WARNING ] [ -c CRITICAL ] [ -h ]"
  echo "Check Linux uptime over ssh - [email protected] 2011-12"
  return 0
}


# Start the program:
fMain "${@}"