$ cd /etc/httpd/sites-enabled
$ ln -s ../sites-available/it-openstreetmapitalia-txt.conf
$ apachectl configtest
Syntax OK
$ apachectl graceful
$ certbot certonly --webroot --webroot-path=/var/www/html -d openstreetmapitalia.it
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Plugins selected: Authenticator webroot, Installer None
Starting new HTTPS connection (1): acme-v02.api.letsencrypt.org
Obtaining a new certificate
Performing the following challenges:
http-01 challenge for openstreetmapitalia.it
Using the webroot path /var/www/html for all unmatched domains.
Waiting for verification...
Cleaning up challenges

IMPORTANT NOTES:
 - Congratulations! Your certificate and chain have been saved at:
   /etc/letsencrypt/live/openstreetmapitalia.it/fullchain.pem
   Your key file has been saved at:
   /etc/letsencrypt/live/openstreetmapitalia.it/privkey.pem
   Your cert will expire on 2021-05-09. To obtain a new or tweaked
   version of this certificate in the future, simply run certbot
   again. To non-interactively renew *all* of your certificates, run
   "certbot renew"
 - If you like Certbot, please consider supporting our work by:

   Donating to ISRG / Let's Encrypt:   https://letsencrypt.org/donate
   Donating to EFF:                    https://eff.org/donate-le
$ ln -s ../sites-available/it-openstreetmapitalia-ssl.conf
$ apachectl configtest
Syntax OK
$ apachectl graceful