haproxy/apache/domain_validation.conf

<VirtualHost *:9001>
  ServerName domain_validation

  ## Vhost docroot
  DocumentRoot "/var/www/domain_validation/"

  ## Directories, there should at least be a declaration for /var/www/domain_validation/

  <Directory "/var/www/domain_validation/">
    Options Indexes FollowSymLinks MultiViews
    AllowOverride None
    Require all granted
  </Directory>

  ## Logging
  ErrorLog "/var/log/apache2/domain_validation_error.log"
  ServerSignature Off
  CustomLog "/var/log/apache2/domain_validation_access.log" combined

  ## Block access statements
  # Block access to SCM directories.
  <DirectoryMatch .*\.(svn|git|bzr|hg|ht)/.*>
    Require all denied
  </DirectoryMatch>
</VirtualHost>