If an accelerated domain name is configured with multiple origin servers and you need to retrieve resources from different virtual sites based on the HOST header, use the specify the origin host for each origin feature. This feature lets you configure a unique origin host for each origin server.
Overview
When your accelerated domain name is attached to multiple origin servers, the default origin host sends the same domain name to all origin servers. This requires each origin server to host a virtual site for that domain name. With the specify the origin host for each origin feature, you can set a distinct origin host for each origin server. This provides flexibility and eliminates unnecessary configuration work. For more information about how origin hosts work, see Configure the default origin host.
If you configure both the default origin host and specify the origin host for each origin, points of presence (POPs) send the origin host configured for that specific origin server when accessing it.
Procedure
Log on to the CDN console.
In the left navigation pane, click Domain Names.
On the Domain Names page, find the target domain name and click Manage in the Actions column.
In the domain's navigation pane, click Origin Fetch.
In the Origin Host for Each Origin section, click Add.
In the Specify Origin Host dialog box, configure the parameters.
Parameter
Description
Origin Type
Select the type of origin server to configure from the drop-down list:
Basic Origin: the origin server address added when you configure an origin server.
All Origins: any origin server to which CDN redirects requests.
Custom Origin: If the origin server address that you want to configure is not in the origin server information list, you can set it using Custom Origin.
Origin Address
How this parameter relates to Origin Type:
If you select Basic Origin for Origin Type, select an origin address from the drop-down list.
If you select All Origins for Origin Type, leave this field blank.
If you select Custom Origin for Origin Type, enter a custom origin address.
Origin Host Type
Select the type of origin host to configure from the drop-down list:
Basic Origin Domain: the domain name of the origin server added when you configure an origin server. This does not apply to IP-based origins.
Accelerated Domain Name: the domain name accelerated by CDN.
Custom Origin Host: use this option if the origin host you want to configure is not in the origin server list and is not the accelerated domain name.
Origin Host
How this parameter relates to Origin Host Type:
If you select Basic Origin Domain for Origin Host Type, select an origin host from the drop-down list.
If you select Accelerated Domain Name for Origin Host Type, the origin host is the domain name accelerated by CDN. No input is needed.
If you select Custom Origin Host for Origin Host Type, enter a custom origin host.
Rule Condition
Rule conditions identify various parameters in a user request to determine whether a configuration applies to the request.
Do not use: Do not use rule conditions.
To add or edit rule conditions, manage them in the Rules Engine.
Click OK.