node.js - Use nginx to configure the node program. The conf configuration has been changed, but the domain name cannot be accessed?

Question

I used pm2 to run a node sample program (express sample program). It can currently be opened with http://127.0.0.1:3000. Now I want to open it with my own custom domain name, but I use nginx configuration After that, it still cannot be opened with a custom domain name (http://mydomain.com). It is ok to use 127.0.0.1 or localhost. Do I need to configure the host on this machine? However, after searching around the Internet for nginx configuration experience or instructions, none of them said that I still need to change the host. I hope someone can answer it.

Attach the configuration information of nginx.conf

#user  nobody;
worker_processes  1;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;


events {
    worker_connections  1024;
}


http {
    include       mime.types;
    default_type  application/octet-stream;

    #log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
    #                  '$status $body_bytes_sent "$http_referer" '
    #                  '"$http_user_agent" "$http_x_forwarded_for"';

    #access_log  logs/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;

    #gzip  on;

    upstream nodejs {
        server 127.0.0.1:3000;
    }

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

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        location / {
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header Host  $http_host;
            proxy_set_header X-Nginx-Proxy true;
            proxy_set_header Connection "";
            proxy_pass      http://nodejs;
            

            #root   html;
            #index  index.html index.htm;
        }

        #error_page  404              /404.html;

        # redirect server error pages to the static page /50x.html
        #
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }

    }

    include servers/*;
}

Answer 1

Some key points recorded in NodeJs project - QueenKing - SegmentFault /a/11...

Answer 2

The local environment needs to configure host, and the custom domain name is mapped to 127.0.0.1

Answer 3

The domain name is for external network servers. Why are you accessing the domain name locally?