How to Create and Update a LetsEncrypt SSL Certificate with CertBot

How to an Update Existing Certificate

1. Run the following command (in my case a manual install of certbot-auto was required). Ensure the -d list includes all domains you want in the updated certificate. Change the --cert-name and -d domains to match your usecase

   sudo ./certbot-auto certonly --cert-name steamforge.net -w /var/www/html -d steamforge.net,wiki.steamforge.net --expand

2. Choose an authentication option. I prefer 3 (Place files in webroot directory)
3. enter U to indicate you want to update your certificates.