Apache Configuration Guide

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

• A reverse proxy configuration where your website.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 Apache Web Server

sudo apt update
sudo apt install apache2 -y

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Step 2: Enable Required Apache Modules

sudo a2enmod proxy
sudo a2enmod proxy_http
sudo a2enmod headers
sudo a2enmod rewrite

Restart Apache to apply changes:

sudo systemctl restart apache2

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Step 3: Configure Apache Virtual Host for site.com

Replace yourwebsite.com below with your actual domain

Create a new site configuration file:

sudo nano /etc/apache2/sites-available/yourwebsite.com.conf

Paste the following content:

<VirtualHost *:80>
    ServerName yourwebsite.com

    DocumentRoot /var/www/html
    SSLProxyEngine On
    SSLProxyVerify none
    SSLProxyCheckPeerCN off
    ProxyPreserveHost Off
        <Proxy *>
           Require all granted
        </Proxy>
    ProxyPass /hash http://hash.yoursite.com
    ProxyPassReverse /hash http://hash.yoursite.com/

    ErrorLog ${APACHE_LOG_DIR}/yoursite.com_error.log
    CustomLog ${APACHE_LOG_DIR}/yoursite.com_access.log combined
</VirtualHost>

Enable the new site and disable the default:

sudo a2ensite site.com.conf
sudo a2dissite 000-default.conf
sudo systemctl reload apache2

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Steps 4, 5, and 6 are only necessary if you do not have a signed certificate for your web server already

Step 4: Install Certbot and Apache Plugin

sudo apt install certbot python3-certbot-apache -y

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Step 5: Obtain SSL Certificate with Certbot

Replace yourwebsite.com below with your actual domain

sudo certbot --apache -d yourwebsite.com

Certbot will:

• Automatically configure HTTPS in Apache

• Enable HTTP to HTTPS redirection

• Reload Apache automatically

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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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Step 7: 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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Conclusion

You now have:

• Apache 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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