无法使用 puppetlabs apache 模块访问 www

Question

vhosts 由 puppetlabs-apache 模块管理，我无法使用 www 访问网站，但不用 www 就可以。当我使用 www 时，我得到一个空白页，没有任何错误，也没有任何日志，非 www 工作正常。

这是该网站的 conf 文件

# ************************************
# Vhost template in module puppetlabs-apache
# Managed by Puppet
# ************************************

<VirtualHost *:80>
  ServerName www.example.com

  ## Vhost docroot
  DocumentRoot "/var/www/vhosts/example.com/httpdocs"



  ## Directories, there should at least be a declaration for /var/www/vhosts/example.com/httpdocs


  <Directory "/var/www/vhosts/example.com/httpdocs">
    AllowOverride ALL
    Order allow,deny
    Allow from all
    AddHandler x-httpd-php .php .php3 .php4 .php5
    suPHP_UserGroup jasonnarog jasonnarog
  </Directory>

  ## Load additional static includes


  ## Logging
  ErrorLog "/var/www/vhosts/example.com/logs/www.example.com_error.log"
  ServerSignature Off
  CustomLog "/var/www/vhosts/example.com/logs/www.example.com_access.log" combined




  ## Server aliases
  ServerAlias example.com
  suPHP_AddHandler x-httpd-php
  suPHP_Engine on
</VirtualHost>

我尝试切换别名和服务器名称，但得到相同的结果。