nagios load 百分比 监控报警插件

nagios 自带的监控load 的由于不同型号的机器需要区别设置参数，很不方便，使用使用百分比可以不用考虑机器的cpu核数

#!/bin/bash
##########################################################
#[email protected] load_info                                #
#[email protected]                                                 #
##########################################################
#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