[轉載]常用的主機監控shell指令碼

作者：Mike.Xu 發表於: October 15, 2009 10:10 PM
轉載時請務必以超連結形式標明文章原始出處和作者資訊及本版權宣告。
連結：

下面是我常用的幾個主機監控的指令碼，大家可以根據自己的情況在進行修改，希望能給大家一點幫助。
1、檢視主機網路卡流量
#!/bin/bash
#network
#Mike.Xu
while : ; do
      time='date +%m"-"%d" "%k":"%M'
      day='date +%m"-"%d'
      rx_before='ifconfig eth0|sed -n "8"p|awk '{print $2}'|cut -c7-'
      tx_before='ifconfig eth0|sed -n "8"p|awk '{print $6}'|cut -c7-'
      sleep 2
      rx_after='ifconfig eth0|sed -n "8"p|awk '{print $2}'|cut -c7-'
      tx_after='ifconfig eth0|sed -n "8"p|awk '{print $6}'|cut -c7-'
      rx_result=$[(rx_after-rx_before)/256]
      tx_result=$[(tx_after-tx_before)/256]
      echo "$time Now_In_Speed: "$rx_result"kbps Now_OUt_Speed: "$tx_result"kbps"
      sleep 2
done

2. 新看到的一則SHELL實現同樣的功能
#!/bin/bash
function usage
{
        echo "use ./test_net.sh ethX time"
        echo "$1 is you network interface "
        echo "$2 is the last time!"
        echo "for example: ./test_net.sh eth0 2"
        exit 100
}

if [ $# -lt 2 -o $# -gt 2 ];then
        usage
fi

eth=$1
time=$2

old_inbw=`cat /proc/net/dev | grep $eth | awk -F'[: ]+' '{print $3}'`
old_outbw=`cat /proc/net/dev | grep $eth | awk -F'[: ]+' '{print $11}'`

while true
do
        sleep $time
        new_inbw=`cat /proc/net/dev | grep $eth | awk -F'[: ]+' '{print $3}'`
        new_outbw=`cat /proc/net/dev | grep $eth | awk -F'[: ]+' '{print $11}'`
        inbw=`expr $((($new_inbw-$old_inbw)/$time))`
        outbw=`expr $((($new_outbw-$old_outbw)/$time))`
        echo "$eth: IN:$inbw bytes OUT:$outbw bytes"
        old_inbw=${new_inbw}
        old_outbw=${new_outbw}
done
exit 0

執行效果：
[root@bogon shell]# ./test_net.sh eth0 2
eth0: IN:3097 bytes OUT:50374 bytes
eth0: IN:3158 bytes OUT:44202 bytes
eth0: IN:2587 bytes OUT:58932 bytes
eth0: IN:2104 bytes OUT:51543 bytes
2、系統狀況監控

#!/bin/sh
#systemstat.sh
#Mike.Xu
IP=192.168.1.227
top -n 2| grep "Cpu" >>./temp/cpu.txt
free -m | grep "Mem" >> ./temp/mem.txt
df -k | grep "sda1" >> ./temp/drive_sda1.txt
#df -k | grep sda2 >> ./temp/drive_sda2.txt
df -k | grep "/mnt/storage_0" >> ./temp/mnt_storage_0.txt
df -k | grep "/mnt/storage_pic" >> ./temp/mnt_storage_pic.txt
time=`date +%m"."%d" "%k":"%M`
connect=`netstat -na | grep "219.238.148.30:80" | wc -l`
echo "$time $connect" >> ./temp/connect_count.txt

3、監控主機的磁碟空間,當使用空間超過90％就透過發mail來發警告

#!/bin/bash
#monitor available disk space
SPACE='df | sed -n '/ \ / $ / p' | gawk '{print $5}' | sed 's/%//'
if [ $SPACE -ge 90 ]
then
fty89@163.com
fi

4、監控CPU和記憶體的使用情況

#!/bin/bash
#script to capture system statistics
OUTFILE=/home/xu/capstats.csv
DATE='date +%m/%d/%Y'
TIME='date +%k:%m:%s'
TIMEOUT='uptime'
VMOUT='vmstat 1 2'
USERS='echo $TIMEOUT | gawk '{print $4}' '
LOAD='echo $TIMEOUT | gawk '{print $9}' | sed "s/,//' '
FREE='echo $VMOUT | sed -n '/[0-9]/p' | sed -n '2p' | gawk '{print $4} ' '
IDLE='echo $VMOUT | sed -n '/[0-9]/p' | sed -n '2p' |gawk '{print $15}' '
echo "$DATE,$TIME,$USERS,$LOAD,$FREE,$IDLE" >> $OUTFILE

5、全方位監控主機

#!/bin/bash
# check_xu.sh
# 0 * * * * /home/check_xu.sh

DAT="`date +%Y%m%d`"
HOUR="`date +%H`"
DIR="/home/oslog/host_${DAT}/${HOUR}"
DELAY=60
COUNT=60
# whether the responsible directory exist
if ! test -d ${DIR}
then
        /bin/mkdir -p ${DIR}
fi
# general check
export TERM=linux
/usr/bin/top -b -d ${DELAY} -n ${COUNT} > ${DIR}/top_${DAT}.log 2>&1 &
# cpu check
/usr/bin/sar -u ${DELAY} ${COUNT} > ${DIR}/cpu_${DAT}.log 2>&1 &
#/usr/bin/mpstat -P 0 ${DELAY} ${COUNT} > ${DIR}/cpu_0_${DAT}.log 2>&1 &
#/usr/bin/mpstat -P 1 ${DELAY} ${COUNT} > ${DIR}/cpu_1_${DAT}.log 2>&1 &
# memory check
/usr/bin/vmstat ${DELAY} ${COUNT} > ${DIR}/vmstat_${DAT}.log 2>&1 &
# I/O check
/usr/bin/iostat ${DELAY} ${COUNT} > ${DIR}/iostat_${DAT}.log 2>&1 &
# network check
/usr/bin/sar -n DEV ${DELAY} ${COUNT} > ${DIR}/net_${DAT}.log 2>&1 &
#/usr/bin/sar -n EDEV ${DELAY} ${COUNT} > ${DIR}/net_edev_${DAT}.log 2>&1 &

   放在crontab裡每小時自動執行：
0 * * * * /home/check_xu.sh

   這樣會在/home/oslog/host_yyyymmdd/hh目錄下生成各小時cpu、記憶體、網路，IO的統計資料。

   如果某個時間段產生問題了，就可以去看對應的日誌資訊，看看當時的主機效能如何。

常用的主機監控shell指令碼

相關文章