HTTP host prefixes (/etc/httpd.hostprefixes)

This window allows you to view and edit the /etc/httpd.hostprefixes file. The filer looks up this file if it uses virtual hosting. Virtual hosting enables a filer to respond to requests directed to more than one IP address through a single physical interface. For example, an Internet provider can host several web sites but has only one physical interface.

The filer uses the destination IP address of an incoming HTTP request to find the directory that contains the HTTP pages belonging to the virtual host. To determine the directory, the filer reads the /etc/httpd.hostprefixes file

The window provides the following information about the host prefixes in the /etc/httpd.hostprefixes:

• Prefix: The subdirectory of the HTTP root directory that contains files and directories that can be transferred to clients by the HTTP protocol.
• Host Names/Addrs: The name or IP address of the virtual host associated with prefix (directory).

The HTTP Host Prefixes window also provides buttons that allow you to add new, and modify or delete existing entries in the /etc/httpd.hostprefixes file. The window provides the following buttons:

• Reload. Click this button to reload the existing /etc/httpd.hostprefixes file from the filer.
• Save. Click this button to save the changes to the /etc/httpd.hostprefixes file. Changes to the file take effect immediately.

  NOTE: Reboot the filer after changing any /etc file to make sure the new configuration works correctly.

• Insert. Click anywhere in the display box and click Insert to add a host prefix to the /etc/httpd.hostprefixes file.
• Modify. Click the appropriate host prefix in the display box and click Modify to modify the information for a prefix in the /etc/httpd.hostprefixes file.
• Delete. Click the appropriate host prefix in the display box and click Delete to delete a prefix from the /etc/httpd.hostprefixes file.