nagios load 百分比 监控报警插件

#!/bin/bash
##########################################################
#2016-04-19@get load_info                                #
#by@xbzy                                                 #
##########################################################
#set -o nounset
set -o errexit
if [ $# -ne 4 ];then
echo "sh `basename $0`  -w[args]  -c[args]"
exit 2
fi
while getopts :w:c: opt
do
case $opt in
w)
Warng_threshold=$OPTARG
;;
c)
Critical_threshold=$OPTARG
;;
h)
echo "Usage:sh $0 -w 80 -c 100"
exit 3
;;
:)
echo "Option -$OPTARG requires an argument." >&2
exit 3
;;
\?)
echo "sh `basename $0`  -w[args]  -c[args]"
exit 3
;;
esac
done
if [ -z "$Warng_threshold" ] || [ -z "$Critical_threshold" ];then
#   echo "sh `basename $0`  -w[args]  -c[args]"
exit 2
fi
int_War_threshold=$(echo $Warng_threshold|awk '{print $1*100}')
int_Cri_threshold=$(echo $Critical_threshold|awk '{print $1*100}')
load_OK=0
load_WARNING=1
load_CRITICAL=2
load_UNKNOWN=3

_load_1min=$(cat /proc/loadavg |awk '{print $1}')
_load_5min=$(cat /proc/loadavg |awk '{print $2}')
_load_15min=$(cat /proc/loadavg |awk '{print $3}')
_cpu_core=$(cat /proc/cpuinfo |grep processor|wc  -l)

function get_percent()
{
local load_value=$1
#local  temp_value=$(echo "scale=4;${load_value}/${_cpu_core}"|bc)
#_value=$(echo "$temp_value*100"|bc|awk '{printf "%2.2f\n",$0}')
local _value=$(echo "$load_value"|awk '{printf "%2.2f\n",$1/_cpu_core*100}' _cpu_core=${_cpu_core})
printf ${_value}

}

min1_load=$(get_percent  ${_load_1min})
min5_load=$(get_percent  ${_load_5min})
min15_load=$(get_percent  ${_load_15min})
#echo "$min1_load,$min5_load,$min15_load"
int_min1_load=$(echo $min1_load|awk '{print $1*100}')
int_min5_load=$(echo $min5_load|awk '{print $1*100}')
int_min15_load=$(echo $min15_load|awk '{print $1*100}')

if [ $int_min1_load -lt $int_War_threshold ] && [ $int_min5_load -lt $int_War_threshold ] && [ $int_min15_load -lt $int_War_threshold ];then
echo "OK"
exit $load_OK
elif [ $int_min1_load -gt $int_Cri_threshold ] || [ $int_min5_load -gt $int_Cri_threshold ] || [ $int_min15_load -gt $int_Cri_threshold ];then
echo "CRITICAL: min1_load:${min1_load},min5_load:${min5_load},min15_load:${min15_load}"
exit $load_CRITICAL
else
echo "WARNING: min1_load:${min1_load},min5_load:${min5_load},min15_load:${min15_load}"
exit $load_WARNING
fi