几个常用的Linux监控脚本.doc

最近时不时有互联网的朋友问我关于服务器监控方面的问题，问常用的服务器监控除了用开源软件，比如：cacti，nagios监控外是否可以自己写shell脚本呢？根据自己的需求写出的shell脚本更能满足需求，更能细化主机监控的全面性。下面是我常用的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.Xuwhile : ; do time=date +%m-%d %k:%M day=date +%m-%d rx_before=ifconfig eth0|sed -n 8p|awk print $2|cut -c7- tx_before=ifconfig eth0|sed -n 8p|awk print $6|cut -c7- sleep 2 rx_after=ifconfig eth0|sed -n 8p|awk print $2|cut -c7- tx_after=ifconfig eth0|sed -n 8p|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_resultkbps Now_OUt_Speed: $tx_resultkbps sleep 2done2、系统状况监控#!/bin/sh#systemstat.sh#Mike.XuIP=27top -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:%Mconnect=netstat -na | grep 0:80 | wc -lecho $time $connect ./temp/connect_count.txt3、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 fi4、 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/%YTIME=date +%k:%m:%sTIMEOUT=uptimeVMOUT=vmstat 1 2USERS=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 $OUTFILE5、全方位监控主机#!/bin/bash# check_xu.sh# 0 * * * * /home/check_xu.sh DAT=date +%Y%m%dHOUR=date +%HDIR=/home/oslog/host_$DAT/$HOURDELAY=60COUNT=60# whether the responsible directory existif ! test -d $DIRthen /bin/mkdir -p $DIRfi# 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