How to set up Nginx as a front-end server for Node.js

nginx is a powerful and widely used tool for web servers. It also serves as a front-end proxy server for multiple web application servers. This article will introduce you to setting up an Nginx server as a front-end proxy server for a Node.js application.

1. Install node.js

First install the required software packages for node.js installation and install them on the launchpad Add available nodejs PPA. After that use the following command to install nodejs.

$ sudo apt-get install python-software-properties python g++ make
$ sudo add-apt-repository ppa:chris-lea/node.js
$ sudo apt-get update
$ sudo apt-get install nodejs

2. Install nginx

Now use apt get to install the nginx web server. nginx is available under the default repository.

$ sudo apt-get install nginx

3. Create a test node server

Now create a test node server application and run it on port 3000 of host 127.0.0.1. To create a node server, create the file ~/myapp/myapp.js.

$ cd ~/MyApp/
$ vi myapp.js

And add the following content in the javascript file.

var http = require('http');

http.createServer(function (req, res) {
    res.writeHead(200, {'Content-Type': 'text/plain'});
    res.end('Hello Worldn');
}).listen(3000, "127.0.0.1");
console.log('Server running at http://127.0.0.1:3000/');

Now use the following command to start nodejs in the background

$ node myapp.js &

Access in the browser.

Output: Hello Word

4. Configure NGNIX

After starting the demo server using node.js, now start using Nginx for configuration. Create a virtual host configuration file for the domain in the /etc/nginx/conf.d/ directory.

$ sudo vim /etc/nginx/conf.d/example.com.conf

and add the following.

upstream myapp {
    server 127.0.0.1:3000;
    keepalive 8;
}

# the nginx server instance
server {
    listen 0.0.0.0:80;
    server_name example.com www.example.com;
    access_log /var/log/nginx/example.com.log;

    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_pass http://myapp/;
      proxy_redirect off;
    }
 }

After completing all configurations, let us restart the nginx web server using the following command.

$ sudo /etc/init.d/nginx restart

5. Verify the installer

Now access your server using the domain name, you will see the same at http://127.0.0.1:3000/ page.

Output is Hello Word

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