nginx

1.域名转发，用途：A:本服务器绑定域名，B:转发地址不必是本服务器，用途可实现动态域名解析

    server {
        listen       80;
        server_name  www.5211.com;

        location / {
           proxy_pass http://39.107.237.3;  
        }  
    }

 2. https://blog.csdn.net/weixin_41585557/article/details/82426784

    server {
        listen       80;
        server_name  001.tanlin.375211.net;
        location / {
           proxy_pass http://localhost:7077;  
           proxy_set_header Host $http_host;    //应用可以获取到 001.tanlin.375211.net 
        }  
       
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
    }

 默认绑定所有主域名

        listen       80;
        server_name  localhost;

        listen       80;

        server_name  localhost;