有奖专家座谈——自动化运维案例分享讨论之二（特邀某大型网游运维总监“king_819”）

winncer

这个nagios就能做

Shell_HAT

回复 57# king_819


/bin/cat /etc/rc.conf | grep ifconfig_lo0_alias1 | awk '{print $2}'
--->
awk '/ifconfig_lo0_alias1/{print $2}' /etc/rc.conf

Shell_HAT

回复 57# king_819


netstat -an | grep $Squid3_IP | wc -l
--->
netstat -an | grep -c $Squid3_IP

king_819

回复 62# Shell_HAT


    还是清野的写法简单，脚本已修改

Shell_HAT

Demo_CPU.sh

1. #!/bin/bash
   
2. threshold=80
   
3. cpuutil=`/usr/bin/top -n 1 | /bin/awk '/^Cpu/'`
   
4. cpuused=`echo "${cpuutil}" | /bin/awk -F '[% ]+' '/^Cpu/{print int(100-$8)}'`
   
5. if [ "${cpuused}" -ge "${threshold}" ]; then
   
6.     echo "CPU utilization ${cpuused} is over ${threshold} percent"
   
7.     #echo "${cpuutil}" | /bin/mailx -r "monitor@monitor.com" -s "Alert" "receiver@receiver.com"
   
8. else
   
9.     echo "CPU utilization ${cpuused} is under ${threshold} percent"
   
10. fi
    

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Shell_HAT

Demo_Memory.sh

1. #!/bin/bash
   
2. threshold=80
   
3. process=mysql
   
4. memoryutil=`/bin/ps aux | /bin/grep "^${process}"`
   
5. memoryused=`echo "${memoryutil}" | /bin/awk '{print int($4)}'`
   
6. if [ "${memoryused}" -ge "${threshold}" ]; then
   
7.     echo "Memory utilization of ${process} ${memoryused} is over ${threshold} percent"
   
8.     #echo "${memoryutil}" | /bin/mailx -r "monitor@monitor.com" -s "Alert" "receiver@receiver.com"
   
9. else
   
10.     echo "Memory utilization of ${process} ${memoryused} is under ${threshold} percent"
    
11. fi
    

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Shell_HAT

Demo_Disk.sh

1. #!/bin/bash
   
2. threshold=80
   
3. diskutil=`/bin/df -h`
   
4. for line in `echo "${diskutil}" | /bin/awk 'NR>1&&/%/{print $(NF-1)+0}'`; do
   
5.     if [ "${line}" -ge "${threshold}" ]; then
   
6.         echo "Disk utilization ${line} is over ${threshold} percent"
   
7.         #echo "${diskutil}" | /bin/mailx -r "monitor@monitor.com" -s "Alert" "receiver@receiver.com"
   
8.         break
   
9.     else
   
10.         echo "Disk utilization ${line} is under ${threshold} percent"
    
11.     fi
    
12. done
    

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Shell_HAT

Demo_Password.sh

1. #!/bin/bash
   
2. threshold=5
   
3. username=root
   
4. passinfo=`/bin/grep "^${username}" /etc/shadow`
   
5. lastchange=`echo "${username}" | /bin/awk -F: '/root/{print $3}'`
   
6. max=`/bin/awk -F: '/root/{print $5}' /etc/shadow`
   
7. today=`/usr/bin/perl -e 'printf "%5d\n", time()/3600/24'`
   
8. let countdown=${lastchange}+${max}-${today}
   
9. if [ "${countdown}" -le "${threshold}" ]; then
   
10.     echo "${countdown}" -le "${threshold}"
    
11.     echo "Password of ${username} will expire in $countdown days" | /bin/mailx -r "monitor@monitor.com" -s "Alert" "receiver@receiver.com"
    
12. else
    
13.     echo "${countdown}" -gt "${threshold}"
    
14. fi
    

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Shell_HAT

Demo_Singleton.sh

1. #!/bin/bash
   
2. 
   
3. #Singleton check
   
4. scriptname=$(basename $0)
   
5. pidfile=$scriptname.pid
   
6. single=1
   
7. if [ -e "$pidfile" ]; then
   
8.     read pidlast < "$pidfile"
   
9.     scriptlast=$(ps -ef | grep "\<$pidlast\>.*/$scriptname\>" | grep -v "grep" | awk -F/ '{print $NF}')
   
10.     if [ "$scriptlast" == "$scriptname" ]; then
    
11.         single=0
    
12.     fi
    
13. fi
    
14. if [ "$single" == "1" ]; then
    
15.     echo $ > "$pidfile"
    
16.     echo "Green light to run"
    
17. else
    
18.     echo "Duplicate instance detected"
    
19.     exit 1
    
20. fi
    
21. 
    
22. #Script body
    
23. sleep 1000
    

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gavindev

不错不错~！学习