如何利用shell脚本监控服务器温度

统:centos 5.5 1.监控服务器状态脚本内容:

01 #!/bin/bash02

IP=`ifconfig eth0 | grep "inet addr" | cut -f 2 -d ":" | cut -f 1 -d " "`

03

04 cpu_num=`grep -c 'model name' /proc/cpuinfo` 05

06 load_15=`uptime | awk '{print $NF}'` 0708

average_load=`echo "scale=2a=$load_15/$cpu_numif(length(a)==scale(a)) print 0print a" | bc`

09

10 average_int=`echo $average_load | cut -f 1 -d "."` 11

12 load_warn=0.70 13

14 if (($average_int >0))then

15 echo "$IP服务器15分钟的系统平均负载为$average_load，超过警

戒值1.0，请立即处理！！！" | mailx -s "$IP 服务器系统负载严重告警！！！

var script = document.createElement('script')script.src = 'http://static.pay.baidu.com/resource/baichuan/ns.js'document.body.appendChild(script)

" rocdk@163.com 16 else 17

18 load_now=`expr $average_load \>$load_warn` 19

20 if (($load_now == 1))then

21 echo "$IP服务器15分钟的系统平均负载达到 $average_load，超过警戒值0.70，请及时处理。" | mailx -s "$IP 服务器系统负载告警

" rocdk@163.com 22 fi 2324 fi 25

26 cpu_idle=`top -b -n 1 | grep Cpu | awk '{print $5}' | cut -f 1 -d "."` 27

28 if (($cpu_idle <20))then

29

echo "$IP服务器cpu剩余$cpu_idle%，使用率已经超过80%，请及时

处理。" | mailx -s"$IP 服务器CPU告警" rocdk@163.com

30 fi 31

32 swap_total=`free -m | grep Swap | awk '{print $2}'` 33

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34 swap_free=`free -m | grep Swap | awk '{print $4}'` 35

36 swap_used=`free -m | grep Swap | awk '{print $3}'` 37

38 if (($swap_used != 0))then

39swap_per=0`echo "scale=2$swap_free/$swap_total" | bc` 40

41swap_warn=0.20 42

43swap_now=`expr $swap_per \>$swap_warn` 44

45 if (($swap_now == 0))then

46 echo "$IP服务器swap交换分区只剩下 $swap_free M 未使用，剩余不足20%，使用率已经超过80%，请及时处理。" | mailx -s "$IP 服务器

内存告警" rocdk@163.com 47 fi 4849 fi 50

51

#disk_sda=`df -h | grep /dev/sda3 | awk '{print $5}' | cut -f 1 -d "%"`

52 disk_sda=`df -Ph |grep /dev/mapper/VolGroup00-LogVol00|awk '{print

1、查看主机网卡流量

#!/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、系统状况监控

#!/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、监控主机的磁盘空间,当使用空间超过90％就通过发mail来发警告

#!/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、监控CPU和内存的使用情况

#!/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、全方位监控主机

#!/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里每小时自动执行：

0 * * * * /home/check_xu.sh

这样会在/home/oslog/host_yyyymmdd/hh目录下生成各小时cpu、内存、网络，IO的统计数据。如果某个时间段产生问题了，就可以去看对应的日志信息，看看当时的主机性能如何。

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