Welcome to the no-bullshit guide to Configuring auto renewing LetsEncrypt SSL certs with Apache and Certbot. Purely steps and nothing more.
Copy-paste these to your server as multiple commands.

sudo apt-get remove letsencrypt
sudo apt-get remove certbot
sudo apt-get install software-properties-common
sudo apt-get update
sudo apt-get install certbot
sudo apt-get install python-certbot-apache

  • Create a vhosts file and open for edit. For AWS Linux:

sudo touch /etc/httpd/conf.d/subomain.yourdomain.com.conf
sudo nano /etc/httpd/conf.d/subomain.yourdomain.com

    • Paste the following inside it. Note that DocumentRoot should match the value in your /etc/httpd/conf/httpd.conf file

<VirtualHost *:443>
ServerName subomain.yourdomain.com;
DocumentRoot /var/www/html/subomain.yourdomain.com

  • Run Certbot and follow on-screen instructions

sudo certbot –apache

    • Select sitename
    • Select secure (recommended) access
    • Google for errors if you get any (you shouldn’t)
  • Setup auto renewal via a cron job

sudo crontab -e

    • Add this line in crontab

*/12 * * * root certbot -q renew –apache