check-load.sh

#!/bin/bash

while getopts 'w:c:' OPT; do
  case $OPT in
    w)  WARN=$OPTARG;;
    c)  CRIT=$OPTARG;;
  esac
done

WARN=${WARN:=0.8}
CRIT=${CRIT:=1}

vLoadPerCore=$(echo $(uptime | awk '{ gsub(/,/, ""); print $(NF-2)}') / $(cat /proc/cpuinfo | grep 'processor'| wc -l) | bc -l)

if [ $(echo ${vLoadPerCore}'>='${CRIT} | bc -l) -eq 1 ]
then
        echo "LOAD CRITICAL - ${vLoadPerCore}"
        exit 2
elif [ $(echo ${vLoadPerCore}'>='${WARN} | bc -l) -eq 1 ]
then
        echo "LOAD WARNING - ${vLoadPerCore}"
        exit 1
else
        echo "LOAD OK - ${vLoadPerCore}"
        exit 0
fi