Setup EC2 with Debian OS

Ensure the following protocols are set up: SSH, HTTP, HTTPS, and MongoDB on port 27017.

Update and Upgrade Packages

sudo apt update
sudo apt upgrade

Install Node.js

Visit NodeSource and copy the Node.js CLI for installation.

Install PM2 Globally

sudo npm install pm2 -g

Install MongoDB

Follow the steps in the official MongoDB documentation: Install MongoDB on Debian

Allow MongoDB Compass Access

Edit MongoDB configuration:
sudo nano /etc/mongod.conf

Save the MongoDB Configuration

Exit and save the file using:
Ctrl + X, Y, Enter

Restart MongoDB

sudo systemctl restart mongod

Check MongoDB status:

sudo systemctl status mongod

Check MongoDB Compass Login

Use the following connection string:
mongodb://ec2-ip:27017

Install Nginx

sudo apt install nginx

Change Ownership for /var/www Directory

sudo chown admin /var/www to allow file permissions.

Setup Nginx Reverse Proxy

Edit the Nginx configuration:
sudo nano /etc/nginx/sites-available/default

Nginx Configuration Example

server {
    listen 80;

    server_name _;

    location / {
        proxy_pass http://localhost:8080;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }
}

Save the Nginx Configuration

Exit and save the file using:
Ctrl + X, Y, Enter

Restart Nginx

sudo systemctl restart nginx

Check Nginx status:

sudo systemctl status nginx

Get SSL on Nginx

Install Certbot and Nginx plugin:

sudo apt install certbot python3-certbot-nginx

Obtain SSL certificates:

sudo certbot --nginx -d demo.com -d www.demo.com

Test SSL certificate renewal:

sudo certbot renew --dry-run

Handle SSL Errors (if any)

If there are SSL errors, edit the Nginx configuration:
sudo nano /etc/nginx/sites-available/default

Nginx SSL Configuration Example

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

    location / {
        proxy_pass http://localhost:8080;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }

    # Redirect www to non-www
    if ($host = 'www.demo.com') {
        return 301 http://demo.com$request_uri;
    }

    # Other necessary configurations
}

Restart Nginx and Check Status

sudo systemctl restart nginx
sudo systemctl status nginx

What is Database? and Relational V/S Non Relational

Notes and Source Code