分类： LINUX
2012-05-25 20:15:14
1、查看主机网卡流量
1. #!/bin/bash
2.
3. #network
4.
5. #Mike.Xu
6.
7. while : ; do
8.
9. time=’date +%m”-”%d” “%k”:”%M’
10.
11. day=’date +%m”-”%d’
12.
13. rx_before=’ifconfig eth0|sed -n “8″p|awk ‘{print $2}’|cut -c7-’
14.
15. tx_before=’ifconfig eth0|sed -n “8″p|awk ‘{print $6}’|cut -c7-’
16.
17. sleep 2
18.
19. rx_after=’ifconfig eth0|sed -n “8″p|awk ‘{print $2}’|cut -c7-’
20.
21. tx_after=’ifconfig eth0|sed -n “8″p|awk ‘{print $6}’|cut -c7-’
22.
23. rx_result=$[(rx_after-rx_before)/256]
24.
25. tx_result=$[(tx_after-tx_before)/256]
26.
27. echo “$time Now_In_Speed: “$rx_result”kbps Now_OUt_Speed: “$tx_result”kbps”
28.
29. sleep 2
30.
31. done
2、系统状况监控
1. #!/bin/sh
2.
3. #systemstat.sh
4.
5. #Mike.Xu
6.
7. IP=192.168.1.227
8.
9. top -n 2| grep “Cpu” >>./temp/cpu.txt
10.
11. free -m | grep “Mem” >> ./temp/mem.txt
12.
13. df -k | grep “sda1″ >> ./temp/drive_sda1.txt
14.
15. #df -k | grep sda2 >> ./temp/drive_sda2.txt
16.
17. df -k | grep “/mnt/storage_0″ >> ./temp/mnt_storage_0.txt
18.
19. df -k | grep “/mnt/storage_pic” >> ./temp/mnt_storage_pic.txt
20.
21. time=`date +%m”.”%d” “%k”:”%M`
22.
23. connect=`netstat -na | grep “219.238.148.30:80″ | wc -l`
24.
25. 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
1. #!/bin/bash
2.
3. #monitor available disk space
4.
5. SPACE=’df | sed -n ‘/ / $ / p’ | gawk ‘{print $5}’ | sed ’s/%//’
6.
7. if [ $SPACE -ge 90 ]
8.
9. then
10.
11. fty89@163.com
12.
13. fi
14.
15. 4、 监控CPU和内存的使用情况
16.
17. #!/bin/bash
18.
19. #script to capture system statistics
20.
21. OUTFILE=/home/xu/capstats.csv
22.
23. DATE=’date +%m/%d/%Y’
24.
25. TIME=’date +%k:%m:%s’
26.
27. TIMEOUT=’uptime’
28.
29. VMOUT=’vmstat 1 2′
30.
31. USERS=’echo $TIMEOUT | gawk ‘{print $4}’ ‘
32.
33. LOAD=’echo $TIMEOUT | gawk ‘{print $9}’ | sed “s/,//’ ‘
34.
35. FREE=’echo $VMOUT | sed -n ‘/[0-9]/p’ | sed -n ‘2p’ | gawk ‘{print $4} ‘ ‘
36.
37. IDLE=’echo $VMOUT | sed -n ‘/[0-9]/p’ | sed -n ‘2p’ |gawk ‘{print $15}’ ‘
38.
39. echo “$DATE,$TIME,$USERS,$LOAD,$FREE,$IDLE” >> $OUTFILE
5、全方位监控主机
1. #!/bin/bash
2.
3. # check_xu.sh
4.
5. # 0 * * * * /home/check_xu.sh
6.
7. DAT=”`date +%Y%m%d`”
8.
9. HOUR=”`date +%H`”
10.
11. DIR=”/home/oslog/host_${DAT}/${HOUR}”
12.
13. DELAY=60
14.
15. COUNT=60
16.
17. # whether the responsible directory exist
18.
19. if ! test -d ${DIR}
20.
21. then
22.
23. /bin/mkdir -p ${DIR}
24.
25. fi
26.
27. # general check
28.
29. export TERM=linux
30.
31. /usr/bin/top -b -d ${DELAY} -n ${COUNT} > ${DIR}/top_${DAT}.log 2>&1 &
32.
33. # cpu check
34.
35. /usr/bin/sar -u ${DELAY} ${COUNT} > ${DIR}/cpu_${DAT}.log 2>&1 &
36.
37. #/usr/bin/mpstat -P 0 ${DELAY} ${COUNT} > ${DIR}/cpu_0_${DAT}.log 2>&1 &
38.
39. #/usr/bin/mpstat -P 1 ${DELAY} ${COUNT} > ${DIR}/cpu_1_${DAT}.log 2>&1 &
40.
41. # memory check
42.
43. /usr/bin/vmstat ${DELAY} ${COUNT} > ${DIR}/vmstat_${DAT}.log 2>&1 &
44.
45. # I/O check
46.
47. /usr/bin/iostat ${DELAY} ${COUNT} > ${DIR}/iostat_${DAT}.log 2>&1 &
48.
49. # network check
50.
51. /usr/bin/sar -n DEV ${DELAY} ${COUNT} > ${DIR}/net_${DAT}.log 2>&1 &
52.
53. #/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。
