Let's create a simple certificate for Apache2.
We won't do automatic renewal, meaning in three months time we'll have to deal with renewal. But we really should do autorenewal, but we're just testing things at the moment.
First login to your server. This is the server where your site on the internet, www.blarblaberklaejr.com, or whatever, is based.
Then do this as root:
mkdir -p /opt/letsencrypt cd /opt/letsencrypt git clone https://github.com/letsencrypt/letsencrypt ./letsencrypt-auto certonly --manual
This creates the directory where we clone the latest letsencrypt. Then we start the manual process to create certificates.
A terminal application will start asking you for your email for correspondence (although you'll not need to check your email to do anything of this), and the domains for which you want the certificate.
Then it'll break out of that and ask you to create a file on your publically available site for it to check.
Once that check is finished, it'll output the certificates to
Now your existing
/etc/apache2/sites-available/your-file-name.conf should look something like
<VirtualHost *:443> SSLEngine On SSLCertificateFile /etc/letsencrypt/live/yourdomain.com/fullchain.pem SSLCertificateKeyFile /etc/letsencrypt/live/yourdomain.com/privkey.pem ... </VirtualHost>
Restart apache. Rejoice.