Acme-http01 with Apache

apache_vhost.conf

# mod_rewrite method 
<IfModule mod_rewrite.c>
  RewriteEngine On
  RewriteRule /\.well-known/acme-challenge/(.+) http://example.com/cert-central/$1 [R=301,L]
</IfModule>

# mod_alias method 
<IfModule mod_alias.c>
  Alias "/.well-known/acme-challenge" "/var/acme-challenge"
  <Directory "/var/acme-challenge">
    <IfModule mod_authz_core.c>
      Require all granted
    </IfModule>
    <IfModule !mod_authz_core.c>
      Order allow, deny
      Allow from all
    </IfModule>
    ForceType 'text/plain'
  </Directory>
</IfModule>