shell脚本监控cpu/内存使用率

比眉伴天荒 2022-06-03 00:05 286阅读 0赞

该脚本检测cpu和内存的使用情况,只需要调整memorySetting、cpuSetting、userEmail要发邮件报警的email地址即可  
如果没有配置发邮件参数的哥们,已配置了的,直接飞到代码区:  
1.vim /etc/mail.rc  
2.找到以下内容  
set from=yangxingyi@duoduofenqi.com \#来自什么  
set smtp=smtp.exmail.qq.com \#根据您的邮箱发件服务器填写,我这位是TX的企业邮箱  
set smtp-auth-user=yangxingyi@duoduofenqi.com \#邮箱用户名  
set smtp-auth-password=您的密码 \#注意是发邮件密码,有的邮箱服务商登陆密码和发件密码不一样的哦  
set smtp-auth=login  
\*\*配置完成后可以直接echo ‘test content’ |mail -s ‘test title’ yangxingyi@duoduofenqi.com  
如果收到邮件,说明您邮件配置是ok的,否则就是有见没配置好哦,重新检查用户名密码,smtp有没有填错!!!\*\*  
如果您觉得有用的话直接搬走就行了,不用联系我!!!

#/bin/sh
    #auth yangxingyi 2017-12-12 17:50
    #email openweixin666@126.com
    #this script check cpu used rate and memory used rate
    userEmail="269754243@qq.com openweixin666@126.com"
    webIp="www101.200.***.***"
    memorySetting="80"
    cpuSetting="80"
    #check memory used rate 
    totalMemory=$(free -m|awk  '{print $2}'|sed -n '2p')
    usedMemory=$(free -m|awk  '{print $3}'|sed -n '3p')
    freeMemory=$(free -m|awk  '{print $4}'|sed -n '3p')
    usedPerMemory=$(awk 'BEGIN{printf "%.0f",('$usedMemory'/'$totalMemory')*100}')
    freePerMemory=$(awk 'BEGIN{printf "%.0f",('$freeMemory'/'$totalMemory')*100}')
    if [ $usedPerMemory -ge $memorySetting  ]
       then
         minfo="totalMemory:$totalMemory MB,used:$usedMemory MB,free:$freeMemory MB,usedPercent:$usedPerMemory%,freePrecent:$freePerMemory%"
         echo "$(date) $minfo used memory was gt $memorySetting% !" >> /sh/log_hard_disk_check
         echo " $minfo { $webIp}!" | mail -s "{ $webIp} used memory was high!"  $userEmail
    fi
    
    #check cpu used rate
    cpuUsed=$(top -n 1 | awk -F '[ %]+' 'NR==3 {print $2}'|awk -F '.' '{print $1}')
    if [ $cpuUsed -gt $cpuSetting ]
       then
          echo  "$(date) cpu used $cpuUsed% "
          echo  "$(date) cpu used $cpuUsed%"|mail -s "$webIp cpu used $cpuUsed%" $userEmail
    fi