五个常用的Linux监控脚本代码

为大家提供五个常用Linux监控脚本(查看主机网卡流量、系统状况监控、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、监控CPU和内存的使用情况、全方位监控主机)，有需要的朋友不妨看看哦

1、查看主机网卡流量

#!/bin/bash#network#Mike.Xuwhile : ; dotime='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 2rx_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 2done

2、系统状况监控

#!/bin/sh#systemstat.sh#Mike.XuIP=192.168.1.227top -n 2| grep "Cpu" >>./temp/cpu.txtfree -m | grep "Mem" >> ./temp/mem.txtdf -k | grep "sda1" >> ./temp/drive_sda1.txt#df -k | grep sda2 >> ./temp/drive_sda2.txtdf -k | grep "/mnt/storage_0" >> ./temp/mnt_storage_0.txtdf -k | grep "/mnt/storage_pic" >> ./temp/mnt_storage_pic.txttime=`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 spaceSPACE='df | sed -n '/ \ / $ / p' | gawk '{print $5}' | sed 's/%//'if [ $SPACE -ge 90 ][e-mail]

4、 监控CPU和内存的使用情况

#!/bin/bash#script to capture system statisticsOUTFILE=/home/xu/capstats.csvDATE='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.shDAT="`date +%Y%m%d`"HOUR="`date +%H`"DIR="/home/oslog/host_${DAT}/${HOUR}"DELAY=60COUNT=60# whether the responsible directory existif ! test -d ${DIR}then/bin/mkdir -p ${DIR}fi# general checkexport 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

这样便会在/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。