通过shell脚本和企业微信实现报警功能(完整版)

运维 微信报警

接上篇
最终效果如图(GIF太大了 就截了两张图)

#!/bin/sh
expireTime=7200
dbFile="db.json"
corpid=xxx
corpsecret=xxx
touser="xxx"
toparty="xxx"
agentid="xxx"
content="服务器快崩了，你还在这里吟诗作对？"
# s 为秒，m 为 分钟，h 为小时，d 为日数  
interval=1s
## 发送报警信息
sendMsg(){
    if [ ! -f "$dbFile" ];then
			touch "$dbFile"
    fi
    # 获取token
    req_time=`jq '.req_time' $dbFile`
    current_time=$(date +%s)
	refresh=false
	if [ ! -n "$req_time" ];then
            refresh=true
    else
            if [ $((current_time-req_time)) -gt $expireTime ];then
                refresh=true
            fi
    fi
    if $refresh ;then
		req_access_token_url=https://qyapi.weixin.qq.com/cgi-bin/gettoken?corpid=$corpid\&corpsecret=$corpsecret
		access_res=$(curl -s -G $req_access_token_url | jq -r '.access_token')
        ## 保存文件
        echo "" > $dbFile
		echo -e "{" > $dbFile
		echo -e "\t\"access_token\":\"$access_res\"," >> $dbFile
		echo -e "\t\"req_time\":$current_time" >> $dbFile
		echo -e "}" >> $dbFile
        echo ">>>刷新Token成功<<<"
    fi 
    ## 发送消息
    msg_body="{\"touser\":\"$touser\",\"toparty\":\"$toparty\",\"msgtype\":\"text\",\"agentid\":$agentid,\"text\":{\"content\":\"$content\"}}"
	access_token=`jq -r '.access_token' $dbFile`
	req_send_msg_url=https://qyapi.weixin.qq.com/cgi-bin/message/send?access_token=$access_token
    req_msg=$(curl -s -H "Content-Type: application/json" -X POST -d $msg_body $req_send_msg_url | jq -r '.errmsg')
    echo "触发报警发送动作，返回信息为：" $req_msg    
}
loopMonitor(){
    echo 'loop'
    flag=`uptime | awk '{printf "%.2f\n", $11 "\n"}'`
    # 0.7 这个阈值可以视情况而定，如cpu核数为n，则可以设置为0.7 * n  具体视情况而定
    c=$(echo "$flag > 0.7" | bc)
    echo ">>>>>>>>>>>>>>>>>>`date`<<<<<<<<<<<<<<<<<<"
    free -m | awk 'NR==2{printf "Memory Usage: %s/%sMB (%.2f%%)\n", $3,$2,$3*100/$2 }'
    df -h | awk '$NF=="/"{printf "Disk Usage: %d/%dGB (%s)\n", $3,$2,$5}'
	uptime | awk '{printf "CPU Load: %.2f\n", $11 "\n"}'
    echo ">>>>>>>>>>>>>>>>>>end<<<<<<<<<<<<<<<<<<"
    if [ $c -eq 1  ];then
         sendMsg
    fi
}
while true; do
    loopMonitor
    sleep $interval
done

让CPU达到100%的脚本

for i in `seq 1 $(cat /proc/cpuinfo |grep "physical id" |wc -l)`; do dd if=/dev/zero of=/dev/null & done

下周放线上试一试~

CSDN：http://blog.csdn.net/qqhjqs?viewmode=list
博客：http://vector4wang.tk/
简书：https://www.jianshu.com/u/223a1314e818
Github:https://github.com/vector4wang
Gitee:https://gitee.com/backwxc