Let’s Encrypt na samostatném serveru

Let’s Encrypt na samostatném serveru
Na webserveru:
vi /etc/apache2/conf-available/letsencrypt.conf:
<Location "/.well-known/acme-challenge/">
 ProxyPass http://<IP_LETSENCRYPT_SERVERU>/.well-known/acme-challenge/
 ProxyPassReverse http://<IP_LETSENCRYPT_SERVERU>/.well-known/acme-challenge/
</Location>

a2enconf letsencrypt.conf
service apache2 restart

Na Let's Encrypt serveru:
certbot certonly --standalone --preferred-challenges http --non-interactive -d domena.cz
certbot renew --standalone --preferred-challenges http --non-interactive