How to Deploy Node.js Application on your Ubuntu Web Server

Node.js is an open-source JavaScript runtime platform that runs JavaScript code on the server side.

NodeJS Installation Steps

Update your ubuntu system

# sudo apt-get update

To install node.js

# sudo apt-get install nodejs

To install npm

# sudo apt-get install npm

Check the node and npm version

# nodejs -v

Output

v8.11.3

# npm -v

Output

5.6.0

Step 2 — Creating a Node.js Application

# mkdir nodeproject

# cd nodeproject

Create server.js node application. Below example of server.js file. Enter this code in a server.js file.

# nano server.js

const http = require('http');                                 

const hostname = 'localhost';                             

const port = 4000;                                              

const server = http.createServer((req, res) => {

  res.statusCode = 200;                                     

  res.setHeader('Content-Type', 'text/plain');      

  res.end('Hello World Test!\n');                          

});                                                                       

server.listen(port, hostname, () => {                   

  console.log(`Server running at http://${hostname}:${port}/`);

});                                                                        

Start the node project

# node server.js

Output

Server running at http://localhost:4000/

curl through directly you can check.

# curl http://localhost:4000

Output

Hello World Test!

Kill the application by pressing CTRL+C.

Also, you can node project start via forever and pm2 process. This service uses a background in project process running.

How to pm2 install:-

# sudo npm install pm2 -g

Then start node application

# sudo pm2 start server.js

When the server automatically starts run the following commands:

# sudo pm2 startup

# sudo pm2 save

How to forever install:-

# sudo npm install forever -g

Then start node application

# sudo forever start server.js

Also, node application starts /var/www/html path in you can directly run node application.