# mkdir /var/www/www.domainname.com/public_html/.well-known/acme-challenge/test
# setfacl -dm u::rwx,g::rwx,o::rx /var/www/www.domainname.com/public_html/.well-known/acme-challenge/
# /dev/mapper/qz-root / ext3 errors=remount-ro,acl 0 1
# mount -oremount /
# /usr/local/bin/certbot-auto renew