ecs-centos分区空间大于70时发送钉钉告警并清理

本文目的：当分区空间大于70%时，通过自定义的清理命令进行清理日志等缓存文件。

一：脚本展示

#!/bin/bash
#scriptName: clearlog_grant70.sh
#doing：* * * * *  cd /opt/yunwei/script/  && /bin/bash  clearlog_grant70.sh 

value=70
nodename=`hostname`
nodeip=`hostname -i`
time=`date '+%Y-%m-%d-%H:%M:%S'`
scriptname=$0
echo $scriptname


#定义清理函数
clearLogFunc(){
#start clear logs ...
##system
cd /var/log/ && ls |grep messages  | xargs  truncate -s 0k
cd /var/log/journal  &&  find ./* -mmin +10 |grep journal  | xargs  truncate -s 0k
docker images |grep none |awk "{print $3}" |xargs docker rmi
docker container prune -f
docker image prune -f
docker volume prune -f
##project
cd /usr/local/nginx/logs/ && find . -type f -size +1000M |grep log | xargs  truncate -s 0k
cd  /var/log/supervisor  &&   find ./* -mmin +30 |grep log  | xargs  truncate -s 0k
}



#钉钉发送告警函数 start ...
dingSendFunc(){
  echo $1 $2 $3 $4 $5 $6
  url="https://oapi.dingtalk.com/robot/send?access_token=xx"
  curl $url \
   -H 'Content-Type: application/json' \
   -d '{
     "msgtype": "markdown",
     "markdown":
    {"title":"ECS服务器监控告警",
    "text":"![screenshot](https://images.cnblogs.com/cnblogs_com/blogs/718800/galleries/2294157/o_230330085502_1.png) \n  
**报警时间**: <font color=\"#0000FF\">'${1}' '${times}'</font>\n
**监控ip**: <font color=\"#0000FF\">'${2}-${3}'  </font>\n
**磁盘空间使用率:** <font color=\"#FF0000\">'${4}%-${5}' </font> \n
> 来自脚本的监控--'${6}'
"
         },
   }'
}
#钉钉发送告警函数 end .





for i in `  df -h  |grep -v Filesystem |awk '{print $5}'`;do 
  echo  $i 
  a=`echo $i | sed 's/%//g' `
  echo "new key is $a" 
  if [ $a -gt  $value ];then
    echo  "$a >= $value, i will del logs ..."
    b=`df -h |grep $i  |awk '{print $NF}'`
    dingSendFunc $time  $nodename  $nodeip $a $b $scriptname
    clearLogFunc
  else
    echo " $a <=  $value"
  fi 
done

二：添加计划任务

#磁盘空间大于70%时清理日志
* * * * *   /bin/bash -x  /opt/yunwei/script/clearlog_grant70.sh

三：钉钉通知

完！