several frequently used directives for apache server

最新推荐文章于 2025-08-10 10:00:00 发布

Benjieming_Wang

最新推荐文章于 2025-08-10 10:00:00 发布

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分类专栏： HTTP Server, Tomcat 文章标签： server apache deprecated 虚拟机 domain each

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本文详细介绍了Apache服务器中虚拟主机的概念及其配置方法。通过使用<VirtualHost>指令可以实现在同一台物理服务器上运行多个不同的网站。文章还特别解释了基于名称的虚拟主机配置示例，并强调了如何确保现有网站正常运行的同时添加新的虚拟主机。

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1.<vituralhost><vituralhost/>, this directive encloses/contains a group of directives and only apply to a paticular vitural host.
Syntax: <VirtualHost addr[:port] [addr[:port]] ...> ... </VirtualHost>
Available values for addr can be:
(1)IP address for virtual host
(2)full quailfied domain name for IP address(deprecated)
(3)*,used only in combination with NameVirtualHost * to match all IP address
(4)_default_,catch unmatched address

Annotation: what is virtual host? Virtual host is a term, 
it is used to describe the practice of running more than one web site on a single machine.
Virtual can be based on ip which means each web site has its own address,
or domain name which means there have multiple names for each ip.

A typical example for name-based virtual host in HTTP server can be configured like this:
current IP has already been used to match www.yourdomain.itb, 
but still can be used to match another virture machine:www.otherdomain.itb.

NameVirtualHost *:80  ----NameVirtualHost用来指定那个IP地址来接受请求，这里使用*匹配服务器上所有的地址

<VirtualHost *:80>
ServerName www.yourdomain.itb
ServerAlias yourdomain.itb *.yourdomain.itb
DocumentRoot /www/domain
</VirtualHost>

<VirtualHost *:80>
ServerName www.otherdomain.itb
DocumentRoot /www/otherdomain
</VirtualHost>

注意：如果向一个已经存在的web server添加虚拟机，需要一个为已经存在的创建<virtualhost>脚本，
这个虚拟机中所包含的ServerName和DocumentRoot要和全局的ServerName和DocumentRoot保持一致。
同时，把它放在配置文件中虚拟机列表的最前面，这样它就是缺省的虚拟机.
--待续