NGINX Configuration Guide

This guide walks you through setting up an Nginx web server on Ubuntu 22.04 with:

• A reverse proxy configuration where yourwebsite.com/hash points to hash.yourwebsite.com

• HTTPS support using Let’s Encrypt via Certbot

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Prerequisites

• A server running Ubuntu 22.04

• A registered domain name (e.g., yourwebsite.com )

• DNS A record pointing yourwebsite.com to your server’s IP

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Step 1: Install Nginx

sudo apt update
sudo apt install nginx -y

Start and enable Nginx:

sudo systemctl start nginx
sudo systemctl enable nginx

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Step 2: Configure Nginx Server Block for yourwebsite.com

Create a new config file:

sudo nano /etc/nginx/sites-available/yourwebsite.com

Paste the following content:

server {
    listen 80;
    server_name yourwebsite.com;

location /hash {
        proxy_pass https://hash.yourwebsite.com/;
        proxy_set_header Host hash.yourwebsite.com;
        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;
        client_max_body_size 50M;
    }

    access_log /var/log/nginx/yourwebsite.com_access.log;
    error_log /var/log/nginx/yourwebsite.com_error.log;
}

Enable the configuration:

sudo ln -s /etc/nginx/sites-available/yourwebsite.com /etc/nginx/sites-enabled/
sudo nginx -t
sudo systemctl reload nginx

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Step 3: (Optional) Install Certbot and Nginx Plugin

sudo apt install certbot python3-certbot-nginx -y

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Step 4: (Optional) Obtain SSL Certificate with Certbot

Replace yourwebsite.com with your actual domain:

sudo certbot --nginx -d yourwebsite.com

Certbot will:

• Automatically configure HTTPS in your Nginx config

• Enable HTTP to HTTPS redirection

• Reload Nginx automatically

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Step 5: Verify Setup

Test the proxy by visiting:

https://yourwebsite.com/hash

It should forward the request to:

http://hash.yourwebsite.com/

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Step 6: (Optional) Test Auto-Renewal

Verify Certbot renewal service:

sudo systemctl list-timers | grep certbot

Simulate a dry run renewal:

sudo certbot renew --dry-run

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Conclusion

You now have:

• Nginx running on Ubuntu 22.04

• HTTPS enabled via Let’s Encrypt

• A reverse proxy from yourwebsite.com/hash to hash.yourwebsite.com

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