1、查看主机网卡流量
| 代码如下 | 复制代码 |
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#!/bin/bash #!/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 done |
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2、系统状况监控
| 代码如下 | 复制代码 |
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#!/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 |
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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
| 代码如下 | 复制代码 |
| #!/bin/bash #monitor available disk space SPACE='df | sed -n '/ / $ / p' | gawk '{print $5}' | sed 's/%//' if [ $SPACE -ge 90 ] then 发送邮件 fi |
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4、 监控CPU和内存的使用情况
| 代码如下 | 复制代码 |
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#!/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" >> $OUTFILE |
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5、全方位监控主机
| 代码如下 | 复制代码 |
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#!/bin/bash # check_xu.sh # 0 * * * * /home/check_xu.sh DAT="`date +%Y%m%d`" HOUR="`date +%H`" DIR="/home/oslog/host_${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 & |
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放在crontab里每小时自动执行：
| 代码如下 | 复制代码 |
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1 0 * * * * /home/check_xu.sh |
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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。
时间： 2024-09-25 00:29:06