几个常用的Linux监控脚本

几个常用的Linux监控脚本

下面是几个主机监控的脚本，大家可以根据自己的情况再进行修改，希望能给大家一点帮助。

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：

看看下面这个脚本（注意要用英文的标点符号）：

#!/bin/bash

partion_list=( 'df -h | awk ‘NF>3&&NR>1{sub(/%/,””,$(NF-1))print $NF,$(NF-1)}’' )

critical=90

notification_email()

{

emailuser='user@qq.com' “发送邮件地址”

emailpasswd='password'“成功开启POP3/SMTP服务,在第三方客户端登录时，密码框请输入的授权码”

emailsmtp='smtp.qq.com'

sendto='user2@qq.com' “接收邮箱地址”

title='Disk Space Alarm' “邮件标题”

/usr/local/bin/sendEmail -f $emailuser -t $sendto -s $emailsmtp -u $title -xu $emailuser -xp $emailpasswd -m $emailmessage

}

crit_info=””

for (( i=0i<${#partition_list[@]}i+=2 ))

do

if [ “${partition_list[ ((i+1)) ]}” -lt “$critical” ]then

echo “ok! ${partition_list[i]} used ${partition_list[ ((i+1)) ]}%”

else

if [ “${partition_list[ ((i+1)) ]}” -gt “$critical” ]then

crit_info=$crit_info”Warning!!! ${partition_list[i]}

used ${partition_list[ ((i+1) ] }%\n”

fi

fi

done

if [ “$crit_info” != ”” ]then

echo -e $crit_info | notification_email

fi

上面脚本的功能是监控每个磁盘分区，当磁盘分区使用空间超过90%时，就通过sendEmail来发送邮件告警。sendEmail是个开源工具，可以从http://caspian.dotconf.net/menu/Software/SendEmail/sendEmail-v1.56.tar.gz下载；

解压后把sendEmail拷贝到/usr/local/bin下即可。

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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