Apache Virtual Host documentation - Apache HTTP Server Version 2.4








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Apache HTTP Server Version 2.4



Apache > HTTP Server > Documentation > Version 2.4Apache Virtual Host documentation

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    The term Virtual Host refers to the practice of
    running more than one web site (such as
    company1.example.com and company2.example.com)
    on a single machine. Virtual hosts can be "IP-based", meaning that you have a
    different IP address for every web site, or "name-based", meaning that you have
    multiple names running on each IP address. The fact that they
    are running on the same physical server is not apparent to the
    end user.

    Apache was one of the first servers to support IP-based
    virtual hosts right out of the box. Versions 1.1 and later of
    Apache support both IP-based and name-based virtual hosts
    (vhosts). The latter variant of virtual hosts is sometimes also
    called host-based or non-IP virtual hosts.

    Below is a list of documentation pages which explain all
    details of virtual host support in Apache HTTP Server:


 Virtual Host Support
 Configuration directives
See alsomod_vhost_aliasName-based virtual
hostsIP-based virtual hostsVirtual host examplesFile descriptor limitsMass virtual hostingDetails of host matching


Virtual Host Support

    
      Name-based Virtual Hosts (More
      than one web site per IP address)
      IP-based Virtual Hosts (An IP
      address for each web site)
      Virtual Host examples for common
      setups
      File Descriptor Limits (or,
      Too many log files)
      Dynamically Configured Mass Virtual
      Hosting
      In-Depth Discussion of Virtual Host
      Matching
    



Configuration directives

    
      <VirtualHost>
      ServerName
      ServerAlias
      ServerPath
    

    If you are trying to debug your virtual host configuration, you
    may find the -S command line switch
    useful.

    Unix example
    
    apachectl -S
    

    Windows example
    
    httpd.exe -S
    


    This command will dump out a description of how Apache parsed
    the configuration file. Careful examination of the IP addresses and
    server names may help uncover configuration mistakes. (See
    the docs for the httpd program for
    other command line options)



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