Hello, Everyone
My Self Uday Shah
In this blog, we will see how to run and deploy NodeJS apps in production. Follow the steps below:
Step 1 - Install Nodejs
Let's download nodejs from Nodesource. NodeSource is a company which provides enterprise-grade Node support and maintains a repository containing the latest versions of Node.js.
curl -sL https://deb.nodesource.com/setup_14.x | sudo -E bash -
Let's install nodejs now:
sudo apt-get install -y nodejs
Check the installation of node and npm using the following commands:
node --version && npm --version
You will see the versions of nodejs and npm
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Step 2 - Creating a sample nodejs file
Let's create a sample app and paste some basic code into it.
sudo vi app.js
Paste the following code inside it:
const express = require('express')
const app = express()
const port = 3000
app.get('/', (req, res) => {
res.send('Hello World!')
})
app.listen(port, () => {
console.log(`Example app listening at http://localhost:${port}`)
})
Lets now install express so that we can run this app server:
npm install express
run the application
node app.js
You should now be able to see the hello world page when you visit http://server-ip:3000
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Step 3 - Using pm2 as a process manager
Let's install and use pm2 as a process manager. Install pm2 using the commands below:
sudo npm i pm2 -g
Start the application using the following command:
// PM Means Process Manager
pm2 start app.js
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Step 4 - Configuring Nginx as a reverse proxy
Now let's configure Nginx as a reverse proxy. This will help us get the security features from Nginx. Also, we can serve static content using Nginx.
Let's install Nginx using the following command:
sudo apt install nginx
Let's create a conf file for our Nodejs app using the command below
sudo vi /etc/nginx/sites-available/nodeApp
Copy the following content to this file
server{
server_name 165.232.177.116; // Change your Server IP Address
location / {
proxy_pass http://localhost:3000;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection 'upgrade';
proxy_set_header Host $host;
proxy_cache_bypass $http_upgrade;
}
}
Activate this configuration using the command below:
sudo ln -s /etc/nginx/sites-available/nodeApp /etc/nginx/sites-enabled
Visit http://your-ip/ and your application should work fine. Happy coding!
Now Enjoy Your Site is deploy....
