Install SSL certificate on Ubuntu for Apache

install_ssl.md

I found many misleading guides on how to install SSL certificate so that both http and https can work for the same site. Below are the step by step instructions

1. Enable mod_ssl, sudo a2enmod ssl
2. Put your certificate in /etc/ssl/certs/example.com.crt. Other directory may work, but I prefer this.
3. Put your key in /etc/ssl/private/example.com.key. Other directory may work, but I prefer this.
4. Add a new virtual host for https, e.g.

   <VirtualHost *:443>
       DocumentRoot /path/to/project
       ServerName example.com
       DirectoryIndex index.html
   
       <Directory /path/to/directory>
         DirectoryIndex index.html
         Options FollowSymLinks
         AllowOverride All
         Order allow,deny
         Allow from all
      </Directory>
   
      SSLEngine on
      SSLCertificateFile /etc/ssl/certs/example.com.crt
      SSLCertificateKeyFile /etc/ssl/private/example.com.key
   </VirtualHost>
   

5. Restart Apache sudo apache2ctl restart

Both http://example.com and https://example.com should work now.