apache 设置子域名使用不同的IP地址。

#省略LoadModuleListen 80User apacheGroup apacheServerAdmin root@localhostServerName www.mydomian.com:80UseCanonicalName Off<Directory />    Options FollowSymLinks    AllowOverride None</Directory><Directory "/var/www/html">    Options Indexes FollowSymLinks    AllowOverride All    Order allow,deny    Allow from all</Directory>DirectoryIndex index.html index.html.varAccessFileName .htaccess#上面的代码是httpd原配的，#省略若干行#下面的代码是网上找到的，直接添加在httpd结尾处，设置VirtualHost，#重新写一遍mydomian.com和sub.mydomian.com#浏览器貌似可以打开，但是这样写是不是合理呢？NameVirtualHost *:80<VirtualHost *:80>    ServerName mydomian.com    ServerAlias www.mydomian.com    DocumentRoot /var/www/html    <directory "/var/www/html">        Options Indexes FollowSymLinks        AllowOverride all        Order Deny,Allow        Deny from all        Allow from all    </directory></VirtualHost><VirtualHost *:80>    ServerName sub.mydomian.com    ServerAlias www.sub.mydomian.com    DocumentRoot /var/www/html/sub	<directory "/var/www/html/sub">        Options Indexes FollowSymLinks        AllowOverride all        Order Deny,Allow        Deny from all        Allow from all    </directory></VirtualHost>

<VirtualHost 2.3.4.5:80>    ServerName sub.mydomian.com    ServerAlias www.sub.mydomian.com    DocumentRoot /var/www/html/sub    <directory "/var/www/html/sub">        Options Indexes FollowSymLinks        AllowOverride all        Order Deny,Allow        Deny from all        Allow from all    </directory></VirtualHost>