站点nginx不工作错误显示504网关超时

Question

我已经购买了AWS Linux 2服务器来托管我的Web应用程序，

我已经发布了我的Web节点JS应用程序，并且想在默认IP上运行

我在/etc/nginx/nginx/sites-available/migrate.com.com中配置了以下内容。

# the IP(s) on which your node server is running. I chose port 3000.
upstream migrate.test.com {
    server privateIPaddress:3000;
    keepalive 8;
}

# the nginx server instance
server {
    listen 80;
    listen [::]:80;
    server_name migrate.test.com;
    access_log /var/log/nginx/migrate.test.com.log;

    # pass the request to the node.js server with the correct headers
    # and much more can be added, see nginx config options
    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_read_timeout 3600;
      proxy_pass http://migrate.test.com/;
      proxy_redirect off;
    }
 }


```````

**My app.js code** 
```````
var http = require('http');

http.createServer(function (req, res) {
    res.writeHead(200, {'Content-Type': 'text/plain'});
    res.end('Hello World\n');
}).listen(3000, "privateIPaddress");
console.log('Server running success');

``````


please check by browser output 
[output][1]


  [1]: https://i.sstatic.net/1BD5X.png

Answer 1

指定端口 3000 您的节点应用程序也正在侦听，因为默认值为 80 http -

proxy_pass http：// /migrate.test.com:3000;

另外，如果您的nginx服务器与Node Application Server在同一计算机上运行，​​您也可以做 -

proxy_pass http：// localhost：3000;