How Do I Install and Configure Nginx on a DigitalOcean Droplet?

Why Nginx?

Nginx is a fast, lightweight web server used to serve static files, reverse-proxy to Node.js or Python apps, and terminate SSL. It is the default choice for most Droplet deployments because it handles thousands of concurrent connections with minimal memory.

Step 1 — Install Nginx

SSH into your Droplet and run:

sudo apt update
sudo apt install nginx -y

Verify it is running:

sudo systemctl status nginx

Visit your Droplet's IP in a browser — you should see the default Nginx welcome page.

Step 2 — Allow HTTP Through the Firewall

sudo ufw allow 'Nginx Full'
sudo ufw enable
sudo ufw status

Nginx Full opens ports 80 (HTTP) and 443 (HTTPS).

Step 3 — Create a Site Directory

sudo mkdir -p /var/www/mysite
sudo chown -R $USER:$USER /var/www/mysite
echo '<h1>Hello from DigitalOcean</h1>' | tee /var/www/mysite/index.html

Step 4 — Write a Server Block

Create a config file at /etc/nginx/sites-available/mysite:

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

    root /var/www/mysite;
    index index.html;

    location / {
        try_files $uri $uri/ =404;
    }
}

Step 5 — Enable the Site

sudo ln -s /etc/nginx/sites-available/mysite /etc/nginx/sites-enabled/
sudo nginx -t
sudo systemctl reload nginx

nginx -t validates syntax before applying changes — always run it before reloading.

Reverse Proxy for Node.js Apps

If you run an app on port 3000, proxy traffic through Nginx:

location / {
    proxy_pass http://127.0.0.1:3000;
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection 'upgrade';
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
}

Useful Commands

• sudo systemctl reload nginx — apply config changes without downtime
• sudo tail -f /var/log/nginx/error.log — watch error logs live
• sudo nginx -t — test configuration syntax

Once Nginx is serving your site over HTTP, add SSL with Certbot to enable HTTPS.