check_heartbeat

#!/bin/bash
# Author: Emmanuel Bretelle
# Date: 12/03/2010
# Description: Retrieve Linux HA cluster status using cl_status
# Based on http://www.randombugs.com/linux/howto-monitor-linux-heartbeat-snmp.html 
#
# Autor: Stanila Constantin Adrian
# Date: 20/03/2009
# Description: Check the number of active heartbeats
# http://www.randombugs.com

# Get program path
REVISION=1.3
PROGNAME=`basename $0`
PROGPATH=`echo $0 | /bin/sed -e 's,[\\/][^\\/][^\\/]*$,,'`

NODE_NAME=`uname -n`
CL_ST='/usr/bin/cl_status'

#nagios error codes
#. $PROGPATH/utils.sh 
OK=0
WARNING=1
CRITICAL=2
UNKNOWN=3

usage () {
    echo "\
Nagios plugin to heartbeat.

Usage:
  $PROGNAME 
  $PROGNAME [--help | -h]
  $PROGNAME [--version | -v]

Options:
  --help -l	Print this help information
  --version -v  Print version of plugin
"
}

help () {
    print_revision $PROGNAME $REVISION
    echo; usage; echo; support
}


while test -n "$1"
do
  case "$1" in
    --help | -h)
      help
      exit $STATE_OK;;
    --version | -v)
      print_revision $PROGNAME $REVISION
      exit $STATE_OK;;
#    -H)
#      shift
#      HOST=$1;;
#    -C)
#      shift
#      COMMUNITY=$1;;
    *)
      echo "Heartbeat UNKNOWN: Wrong command usage"; exit $UNKNOWN;;
  esac
  shift
done

$CL_ST hbstatus > /dev/null
res=$?
if [ $res -ne 0 ]
then
  echo "Heartbeat CRITICAL: Heartbeat is not running on this node"
  exit $CRITICAL
fi

declare -i I=0
declare -i A=0
NODES=`$CL_ST listnodes`

for node in $NODES
do
  status=`$CL_ST nodestatus $node`
  let I=$I+1
  if [ $status == "active" ]
  then
    let A=$A+1
  fi
done


if [ $A -eq 0 ]
then
  echo "Heartbeat CRITICAL: $A/$I"
  exit $CRITICAL
elif [ $A -ne $I ]
then
  echo "Heartbeat WARNING: $A/$I"
  exit $WARNING
else
  echo "Heartbeat OK: $A/$I"
  exit $OK
fi