- --issue -d --keylength 4096 -w /var/www/letsencrypt --key-file /etc/letsencrypt/rsa-certs/privkey.pem --ca-file /etc/letsencrypt/rsa-certs/chain.pem --cert-file /etc/letsencrypt/rsa-certs/cert.pem --fullchain-file /etc/letsencrypt/rsa-certs/fullchain.pem --reloadcmd "sudo /bin/systemctl reload nginx.service"