[리눅스 쉘 스크립트]CentOS : Network Monitoring

[리눅스 쉘 스크립트]CentOS : Network Monitoring

 

1. 용도 및 목적

별도 프로그램 없이 간단하게 네트워크 사용량 보기 위한 쉘(가상머신 또는 bonding 같은 가상 디바이스에서는 인터페이스 스피드를 못받아오며 추가 입력 필요)

 

2. 환경 : CentOS 6.9 64bit, /bin/bash

 

3. 쉘 스크립트

 

#vi networkmonitor.sh

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#!/bin/bash

 

######################################

#

#                    Network Monitoring

#                                                       by Ru

######################################

 

NODE=`hostname`

echo '------interfaces with status UP------'

#상태가 up인 네트워크 인터페이스 출력

ip link show |grep "state UP" |cut -d ":" -f2 |grep -v bond*

echo '---------------------------------------'

echo -n 'Choose from interfaces with status UP! : '

#상태가 up인 네트워크 중 사용률 보고 싶은 인터페이스 입력

read NIC

 

#NICSpeed=`ethtool $NIC |grep Speed |awk '{print $2}'`

NICSpeed=`cat /sys/class/net/$NIC/speed `

#NIC Speed 가 수집 안될 경 우 수동 입력 숫자만

echo $NICSpeed |grep 0 && echo "NICSpeed loading Success" || echo -n "Loading $NIC information failed - NICSpeed Enter(100/1000/10000)Mbps : " ;read NICSpeed

#NICSpeedSet=`ethtool $NIC |grep Speed |awk '{print $2}' |cut -d"M" -f1 |cut -b2-5`

#NICSpeedSet=`cat /sys/class/net/$NIC/speed |cut -b2-5`

NICSpeedSet=`echo $NICSpeed |cut -b2-5`

 

while true

do

#초단위 

    DATE=`date +%Y%m%d%H%M%S`

#RXTX byte 1차 수집

    RX1=`cat /sys/class/net/$NIC/statistics/rx_bytes`

    TX1=`cat /sys/class/net/$NIC/statistics/tx_bytes`

 

    sleep 1

#RXTX byte 2차 수집

    RX2=`cat /sys/class/net/$NIC/statistics/rx_bytes`

    TX2=`cat /sys/class/net/$NIC/statistics/tx_bytes`

#RXTX error 수집

     RXerror=`cat /sys/class/net/$NIC/statistics/rx_errors`

     TXerror=`cat /sys/class/net/$NIC/statistics/tx_errors`

#RXTX drop 수집

     RXdrop=`cat /sys/class/net/$NIC/statistics/rx_dropped`

     TXdrop=`cat /sys/class/net/$NIC/statistics/tx_dropped`

#RXTX overrun collision 수집

     RXover=`cat /sys/class/net/$NIC/statistics/rx_over_errors`

     Collisions=`cat /sys/class/net/$NIC/statistics/collisions`

#RXTX byte 1초간 계산

    TX_BYTE=`expr $TX2 - $TX1`

    RX_BYTE=`expr $RX2 - $RX1`

#RXTX byte M단위 변경 20190725

    TX_MBYTE=`expr $TX_BYTE / 1000000`

    RX_MBYTE=`expr $RX_BYTE / 1000000`

#RXTX byte 를 bit 로 변환

    TX_BIT=`expr $TX_BYTE \* 8`

    RX_BIT=`expr $RX_BYTE \* 8`

#RXTX bit M단위 변경 20190725

    TX_MBIT=`expr $TX_BIT / 1000000`

    RX_MBIT=`expr $RX_BIT / 1000000`

#RXTX bit 합

#RXTX_BIT=`expr $TX_BIT + $RX_BIT`

#RXTX bit 합을 NIC MAX bps 로 나눔

#RXTX_Percent=`expr $RXTX_BIT / 10000$NICSpeedSet`

#RXTX bit 분리 Percent NIC MAX bps 20190725

    RX_Percent=`expr $RX_BIT / 10000$NICSpeedSet`

    TX_Percent=`expr $TX_BIT / 10000$NICSpeedSet`

 

clear

#아래는 원하는 자료 별로 출력 배치

    echo "################################################################"

    echo "####       $NODE Server DATE : $DATE"

    echo "####       Network Monitoring"

    echo "####                                                by Ru "

    echo "################################################################"

    echo -e "Byte per second\t [$NIC] TX: $TX_MBYTE MB/s\tRX: $RX_MBYTE MB/s"

    echo -e "bit per second\t [$NIC] TX: $TX_MBIT Mb/s\tRX: $RX_MBIT Mb/s"

    echo -e "NIC MAX Speed\t [$NIC] $NICSpeed Mbps"

#   echo -e "Network Trrafic\t [$NIC] $RXTX_BIT bps\tUsage:$RXTX_Percent%"

    echo -e "Network Trrafic RX\t [$NIC] $RX_BIT bps\tUsage:$RX_Percent%"

    echo -e "Network Trrafic TX\t [$NIC] $TX_BIT bps\tUsage:$TX_Percent%"

 

 

    if [ $TX_Percent -le 5 ];then

    echo -e "TX Progres bar   \t |#-------------------|"

    elif [ $TX_Percent -le 10 ];then

    echo -e "TX Progres bar   \t |##------------------|"

    elif [ $TX_Percent -le 15 ];then

    echo -e "TX Progres bar   \t |###-----------------|"

    elif [ $TX_Percent -le 20 ];then

    echo -e "TX Progres bar   \t |####----------------|"

    elif [ $TX_Percent -le 25 ];then

    echo -e "TX Progres bar   \t |#####---------------|"

    elif [ $TX_Percent -le 30 ];then

    echo -e "TX Progres bar   \t |######--------------|"

    elif [ $TX_Percent -le 35 ];then

    echo -e "TX Progres bar   \t |#######-------------|"

    elif [ $TX_Percent -le 40 ];then

    echo -e "TX Progres bar   \t |########------------|"

    elif [ $TX_Percent -le 45 ];then

    echo -e "TX Progres bar   \t |#########-----------|"

    elif [ $TX_Percent -le 50 ];then

    echo -e "TX Progres bar   \t |##########----------|"

    elif [ $TX_Percent -le 55 ];then

    echo -e "\033[32mTX Progres bar   \t |###########---------|\033[0m"

    elif [ $TX_Percent -le 60 ];then

    echo -e "\033[32mTX Progres bar   \t |############--------|\033[0m"

    elif [ $TX_Percent -le 65 ];then

    echo -e "\033[32mTX Progres bar   \t |#############-------|\033[0m"

    elif [ $TX_Percent -le 70 ];then

    echo -e "\033[32mTX Progres bar   \t |##############------|\033[0m"

    elif [ $TX_Percent -le 75 ];then

    echo -e "\033[32mTX Progres bar   \t |###############-----|\033[0m"

    elif [ $TX_Percent -le 80 ];then

    echo -e "\033[32mTX Progres bar   \t |################----|\033[0m"

    elif [ $TX_Percent -le 85 ];then

    echo -e "\033[32mTX Progres bar   \t |#################---|\033[0m"

    elif [ $TX_Percent -le 90 ];then

    echo -e "\033[32mTX Progres bar   \t |##################--|\033[0m"

    elif [ $TX_Percent -le 95 ];then

    echo -e "\033[32mTX Progres bar   \t |###################-|\033[0m"

    elif [ $TX_Percent -le 110 ];then

    echo -e "\033[32mTX Progres bar   \t |####################|\033[0m"

fi

    if [ $RX_Percent -le 5 ];then

    echo -e "RX Progres bar   \t |#-------------------|"

    elif [ $RX_Percent -le 10 ];then

    echo -e "RX Progres bar   \t |##------------------|"

    elif [ $RX_Percent -le 15 ];then

    echo -e "RX Progres bar   \t |###-----------------|"

    elif [ $RX_Percent -le 20 ];then

    echo -e "RX Progres bar   \t |####----------------|"

    elif [ $RX_Percent -le 25 ];then

    echo -e "RX Progres bar   \t |#####---------------|"

    elif [ $RX_Percent -le 30 ];then

    echo -e "RX Progres bar   \t |######--------------|"

    elif [ $RX_Percent -le 35 ];then

    echo -e "RX Progres bar   \t |#######-------------|"

    elif [ $RX_Percent -le 40 ];then

    echo -e "RX Progres bar   \t |########------------|"

    elif [ $RX_Percent -le 45 ];then

    echo -e "RX Progres bar   \t |#########-----------|"

    elif [ $RX_Percent -le 50 ];then

    echo -e "\033[32mRX Progres bar   \t |##########----------|\033[0m"

    elif [ $RX_Percent -le 55 ];then

    echo -e "\033[32mRX Progres bar   \t |###########---------|\033[0m"

    elif [ $RX_Percent -le 60 ];then

    echo -e "\033[32mRX Progres bar   \t |############--------|\033[0m"

    elif [ $RX_Percent -le 65 ];then

    echo -e "\033[32mRX Progres bar   \t |#############-------|\033[0m"

    elif [ $RX_Percent -le 70 ];then

    echo -e "\033[32mRX Progres bar   \t |##############------|\033[0m"

    elif [ $RX_Percent -le 75 ];then

    echo -e "\033[32mRX Progres bar   \t |###############-----|\033[0m"

    elif [ $RX_Percent -le 80 ];then

    echo -e "\033[32mRX Progres bar   \t |################----|\033[0m"

    elif [ $RX_Percent -le 85 ];then

    echo -e "\033[32mRX Progres bar   \t |#################---|\033[0m"

    elif [ $RX_Percent -le 90 ];then

    echo -e "\033[32mRX Progres bar   \t |##################--|\033[0m"

    elif [ $RX_Percent -le 95 ];then

    echo -e "\033[32mRX Progres bar   \t |###################-|\033[0m"

    elif [ $RX_Percent -le 110 ];then

    echo -e "\033[32mRX Progres bar   \t |####################|bomb\033[0m"

fi

 

    echo -e ""

     echo -e "Network Error\t [$NIC] TX : $TXerror\tRX: $RXerror"

     echo -e "Network Drop\t [$NIC] TX : $TXdrop\tRX: $RXdrop"

     echo -e "RXoverrun\t [$NIC] RX : $RXover"

     echo -e "TXCollisions\t [$NIC] TX : $Collisions"

 

    echo "################################################################"

done

 

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