Combining two nagios checks into one

Last week I felt the need to combine the output of two nagios checks into one to check the state of my puppet clients. Because I couldn’t find any fast enough, I decided to write one quickly.

I thought I’d share this with the world, should anyone need this too…

#!/bin/bash
# A simple nagioscheck to combine 2 checks
#

cmd=$@
script=$0

OK=0
WARN=1
CRIT=2
UNKNOWN=3

usage () {
  echo "check_combine usage"
  echo "check_combine check1 check1_params -- check2 check2_params"
}

parse () {
  check1=$(echo $cmd | sed -e "s/\$script //" -e "s/ -- .*//")
  check2=$(echo $cmd | sed -e "s/\$script //" -e "s/.* -- //")
}

execute () {
  output1=$($check1)
  code1=$?
  output2=$($check2)
  code2=$?
}

analyse(){
  code=$code1$code2

  case "$code" in
    "00"|"01"|"02"|"03"|"11"|"22"|"33")
       echo $output2
       exit $code2
       ;;
    "10"|"20"|"21"|"23"|"30"|"31")
       echo $output1
       exit $code1
       ;;
    "12"|"13"|"32")
       echo $output2
       exit $code2
       ;;
     esac
}

parse
execute
analyse