shell习题-监控80端口

￡神魔★判官ぃ 2022-05-22 07:37 144阅读 0赞

**1.要求：**

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   <td><span style="font-family:SimSun;font-size:18px;">写一个脚本，判断本机的80端口（假如服务为httpd）是否开启着，如果开启着什么都不做，<br>如果发现端口不存在，那么重启一下httpd服务，并发邮件通知你自己。<br>脚本写好后，可以每一分钟执行一次，也可以写一个死循环的脚本，30s检测一次。</span></td> 
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**2.脚本答案：**

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   <td><span style="font-family:SimSun;font-size:18px;">[root@liang 2018-06-19]# cat httpd.sh&nbsp;<br>#!/bin/bash<br>Mail=lilde123456@163.com<br>while true<br>do<br>&nbsp; &nbsp; &nbsp; &nbsp; Num=`netstat -lntup|grep -w "80"|wc -l`<br>&nbsp; &nbsp; &nbsp; &nbsp; if [ "$Num" -eq 0 ];then<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; /usr/bin/systemctl restart httpd &gt; /dev/null 2&gt;&amp;1<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Date=`date +%F-%T`<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; echo "${Date} systemctl restart httpd"|mail -s "httpd" ${M<br>ail}<br>&nbsp; &nbsp; &nbsp; &nbsp; fi<br>&nbsp; &nbsp; &nbsp; &nbsp; sleep 30<br>done<br></span></td> 
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**3.测试脚本**

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   <td><p><span style="font-family:SimSun;font-size:18px;"><strong>3.1停止http</strong></span></p><p><span style="font-family:SimSun;font-size:18px;">[root@liang 2018-06-19]# systemctl stop httpd<br></span></p><p><span style="font-family:SimSun;font-size:18px;"><strong>3.2运行脚本</strong></span></p><p><span style="font-family:SimSun;font-size:18px;">[root@liang 2018-06-19]# bash &nbsp;httpd.sh&nbsp;<br></span></p><p><span style="font-family:SimSun;font-size:18px;"><img src="https://img-blog.csdn.net/20180619150325789?watermark/2/text/aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xpYW5nX29wZXJhdGlvbnM=/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70" alt=""><br></span></p></td> 
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