모니터링 스크립트

#!/bin/sh
#

data_file=/proc/net/dev
meminfo=/proc/meminfo
if_dev1=eth1
if_dev2=eth2
if_ipaddr1=`ifconfig $if_dev1 | grep "inet addr" | cut -d: -f2 | awk '{print $1}'`
if_ipaddr2=`ifconfig $if_dev1 | grep "inet addr" | cut -d: -f2 | awk '{print $1}'`
interval=$1

 

# check to system resources
cpu_each=`grep 'processor' /proc/cpuinfo  | wc -l`

mem_total=`grep "MemTotal" $meminfo | cut -d: -f2 | awk '{print $1}'`
mem_t=$(echo "scale=0;$mem_total/1000" | bc)
mem_dt="$mem_t MB"
mem_free=`grep "MemFree" $meminfo | cut -d: -f2 | awk '{print $1}'`
mem_usage=$(echo "scale=1;$mem_total-$mem_free" | bc)
mem_u=$(echo "scale=0;$mem_usage/1000" | bc)
mem_du="$mem_u MB"

 

swap_total=`grep "SwapTotal" $meminfo | cut -d: -f2 | awk '{print $1}'`
swap_free=`grep "SwapFree" $meminfo | cut -d: -f2 | awk '{print $1}'`
swap_usage=$(echo "scale=1;$swap_total-$swap_free" | bc)
swap_u=$(echo "scale=0;$swap_usage/1000" | bc)
swap_du="$swap_u MB"
swap_t=$(echo "scale=0;$swap_total/1000" | bc)
swap_dt="$swap_t MB"

if [ ! "$1" ]; then
    interval=1
fi

 

while :
do
    clear

 

    # Received
    bps_r_1=`grep $if_dev1 $data_file | cut -d: -f2 | awk '{print $1}'`
    pkt_r_1=`grep $if_dev1 $data_file | cut -d: -f2 | awk '{print $2}'`

 

    # Trans
    bps_t_1=`grep $if_dev1 $data_file | cut -d: -f2 | awk '{print $9}'`
    pkt_t_1=`grep $if_dev1 $data_file | cut -d: -f2 | awk '{print $10}'`

 

    sleep $interval

 

    # Received
    bps_r_2=`grep $if_dev1 $data_file | cut -d: -f2 | awk '{print $1}'`
    pkt_r_2=`grep $if_dev1 $data_file | cut -d: -f2| awk '{print $2}'`

 

    # Trans
    bps_t_2=`grep $if_dev1 $data_file | cut -d: -f2 | awk '{print $9}'`
    pkt_t_2=`grep $if_dev1 $data_file | cut -d: -f2 | awk '{print $10}'`

    bps_r_3=$(echo "scale=3; $bps_r_2-$bps_r_1" | bc)
    bps_t_3=$(echo "scale=3; $bps_t_2-$bps_t_1" | bc)
    pkt_r_3=$(echo "scale=3; $pkt_r_2-$pkt_r_1" | bc)
    pkt_t_3=$(echo "scale=3; $pkt_t_2-$pkt_t_1" | bc)
 

    # BPS
    if [ $bps_r_3 -lt "1000" ]; then
        bps_r_4=$(echo $bps_r_3)

    # Kbps
    elif [ $bps_r_3 -gt "1000" -o $bps_r_3 -lt "1000000" ]; then
        bps_r_4=$(echo "scale=3; $bps_r_3 / 1000" | bc)

    # Mbsp
    elif [ $bps_r_3 -gt "1000000" -o $bps_r_3 -lt "1000000000" ]; then
        bps_r_4=$(echo "scale=3; $bps_r_3 / 1000000" | bc)
    else

    # Gbsp
        bps_r_4=$(echo "scale=3; $bps_r_3 / 1000000000" | bc)
    fi

 

    # bps
    if [ $bps_t_3 -lt "1000" ]; then
        bps_t_4=$(echo $bps_t_3)

    # kbps
    elif [ $bps_t_3 -gt "1000" -o $bps_t_3 -lt "1000000" ]; then
        bps_t_4=$(echo "scale=3; $bps_t_3 / 1000" | bc)

    # mbsp
    elif [ $bps_t_3 -gt "1000000" -o $bps_t_3 -lt "1000000000" ]; then
        bps_t_4=$(echo "scale=3; $bps_t_3 / 1000000" | bc)
    else

    # gbsp
        bps_t_4=$(echo "scale=3; $bps_t_3 / 1000000000" | bc)
    fi

    echo IP Addr : $if_ipaddr1
    echo Mem Usage : $mem_du / $mem_dt , Swap Usage : $swap_du / $swap_dt
    echo RX bps : $bps_r_4 bps , RX pps : $pkt_r_3  pps
    echo TX bps : $bps_t_4 bps , TX pps : $pkt_t_3 pps

    sleep 1
done

#출처 https://chonnom.com/bbs/board.php?bo_table=B23&wr_id=33&page=2