CentOS Stream 9

How to Install Let's Encrypt SSL in Apache on CentOS Stream 9

To install Let's Encrypt SSL in Apache on CentOS Stream 9, follow these steps.

Step 1 : Ensure DNS Configuration for Domain Verification

Make sure that your domain is configured with DNS records to allow Let's Encrypt to verify it.

Step 2 : Update

sudo dnf update

Step 3 : Install Certbot and the Apache plugin for Certbot:

sudo dnf install certbot python3-certbot-apache

Step 4 : Restart Apache

sudo systemctl restart httpd

Step 5 : Create a virtual host configuration file for your domain (e.g., example.devtutorial.io)

sudo nano /etc/httpd/conf.d/example.devtutorial.io.conf

Add the necessary configuration settings.

<VirtualHost *:80>
    ServerAdmin webmaster@devtutorial.io
    DocumentRoot /var/www/html/example.devtutorial.io
    ServerName example.devtutorial.io

    ErrorLog /var/log/httpd/example.devtutorial.io_error.log
    CustomLog /var/log/httpd/example.devtutorial.io_access.log combined

    <Directory /var/www/html/example.devtutorial.io>
        AllowOverride All
    </Directory>

</VirtualHost>

Step 6 : Create a directory for your domain and a simple index.html file:

sudo mkdir /var/www/html/example.devtutorial.io
echo "Hello, this is example.devtutorial.io" | sudo tee /var/www/html/example.devtutorial.io/index.html

Step 7 : Test the Apache configuration to ensure there are no syntax errors:

sudo apachectl configtest

Step 8 : Restart Apache to apply the changes:

sudo systemctl restart httpd

Step 9 : Obtain SSL Certificate

Run Certbot to obtain an SSL certificate for your domain:

sudo certbot --apache -d example.devtutorial.io

Follow the prompts during the Certbot process:

- Enter your email address.

- Agree to the terms of service by typing 'y'.

- Share your email address with the Electronic Frontier Foundation (EFF) if you want ('y').

- Wait for the success message.

Step 10 : Test the certificate renewal process:

sudo certbot renew --dry-run

Step 11 : Visit your domain in a web browser to verify that the SSL certificate is installed and working correctly.

Congratulations! You have successfully installed Let's Encrypt SSL in Apache on CentOS Stream 9, securing your website with HTTPS.