nagios 网卡流量报警插件

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一个简单的监控插件

#!/bin/bash
##########################################################
#2016-01-13@get network_info              #
#by@xbzy                                                 #
#                                                        #
##########################################################
set -o nounset
set -o errexit

Traffic_OK=0
Traffic_WARNING=1
Traffic_CRITICAL=2
Traffic_UNKNOWN=3

if [ $# -ne 4 ];then
   echo "Usage:sh $0 -w 0.8 -c 0.9"
   exit $Traffic_UNKNOWN
fi

Net_dev=$(ifconfig |grep -E "(eth[0-9]|em[0-9])"|awk '{print $1}')
#Net_dev=$1
Net_dev_num=$(ifconfig |grep -E "(eth[0-9]|em[0-9])"|awk '{print $1}'|wc -l)
One_Net_dev=$(ifconfig |grep -E "(eth[0-9]|em[0-9])"|awk '{print $1}'|head -1)
#Max_speed=$(ethtool $One_Net_dev|grep Speed|grep  -oE  "[0-9]+")
Max_speed="1000"

Warng_threshold=$2
#Warng_threshold="0.8"
Critical_threshold=$4
#Critical_threshold="0.9"
Warng_speed=$(echo $Max_speed | awk '{print $1*Warng_threshold*1024*1024/8}' Warng_threshold=$Warng_threshold)
Critical_speed=$(echo $Max_speed | awk '{print $1*Critical_threshold*1024*1024/8}' Critical_threshold=$Critical_threshold)

Sleep_count=2

function Get_netinfo()
{


local net_device=$1
#Max_speed=$(ethtool $net_device |grep Speed|grep  -oE  "[0-9]+")
#echo  -e  "\t RX `date +%k:%M:%S` TX"

Count=1
while [ "$Count" -gt 0 ]
do

RXpre=$(cat /proc/net/dev | grep "\<$net_device\>" | tr : " " | awk '{print $2}')
TXpre=$(cat /proc/net/dev | grep "\<$net_device\>" | tr : " " | awk '{print $10}')
sleep ${Sleep_count}
#set -x
RXnext=$(cat /proc/net/dev | grep "\<$net_device\>" | tr : " " | awk '{print $2}')
TXnext=$(cat /proc/net/dev | grep "\<$net_device\>" | tr : " " | awk '{print $10}')
#clear

#echo "$TXnext"
#RX=$[RXnext - RXpre]
#TX=$[TXnext - TXpre]
RX=$((${RXnext}-${RXpre}))
TX=$((${TXnext}-${TXpre}))
#RX_k=$(echo ${RX} |awk '{print $1*8/2/1024/1024}')
RX_k=$((${RX}/${Sleep_count}))
TX_k=$((${TX}/${Sleep_count}))

if [[ $RX_k -gt $Warng_speed ]] && [[ $RX_k -lt $Critical_speed ]] || [[ $TX_k -gt $Warng_speed ]] && [[ $TX_k -lt $Critical_speed ]];then
        echo  "Traffic_WARNING $net_device : recv $(echo ${RX_k}|awk '{printf "%2.2f\n",$1/1024}')kB;send $(echo ${TX_k}|awk '{printf "%2.2f\n",$1/1024}')kB"
        exit $Traffic_WARNING
elif [[ $RX_k -gt $Critical_speed ]] || [[ $TX_k -gt $Critical_speed ]] ; then
        echo  "Traffic_CRITICAL $net_device : recv $(echo ${RX_k}|awk '{printf "%2.2f\n",$1/1024}')kB;send $(echo ${TX_k}|awk '{printf "%2.2f\n",$1/1024}')kB"
        exit $Traffic_CRITICAL
else
        echo  "Traffic_OK $net_device : recv $(echo ${RX_k}|awk '{printf "%2.2f\n",$1/1024}')kB;send $(echo ${TX_k}|awk '{printf "%2.2f\n",$1/1024}')kB"
        exit  $Traffic_OK
fi

let "Count -=1"
done

}

#J=0
if [ "$1" = "-w" ] && [ $3 = "-c" ];then

   if [ $Net_dev_num -eq 0 ];then
      echo "No device found"
      exit $Traffic_UNKNOWN
   elif [ $Net_dev_num -eq 1 ];then
      Get_netinfo $Net_dev
   else
      echo "net_device > 1"
      exit  $Traffic_UNKNOWN
   fi
else
   echo "Usage:sh $0 -w 0.8 -c 0.9"
   exit $Traffic_UNKNOWN
fi
#    for i in $Net_dev
#    do
#       Arr_info[$J]=$(Get_netinfo $i)
#       let "J +=1"
#    done
#echo "${Arr_info[@]}"|awk 'BEGIN{OFS=";"}{NF=NF;print $0}'