On the Domain Management Configuration page of a COS bucket, you can configure the default CDN acceleration domain name, custom CDN acceleration domain name, and custom endpoint. Among them, the configurations of the first two are logically related to the CDN service. Therefore, if you want a sub-account to configure them, in addition to COS management permissions (to configure buckets, for example), you must also grant the sub-account relevant permissions of the CDN service.
To ensure the resource security, if you don't grant the sub-account relevant permissions of the CDN service, the sub-account will not be able to configure the default and custom CDN acceleration domain names for a COS bucket by default. If an unauthorized sub-account logs in to the COS console and navigates to the Domain Management Configuration page, an access denied error will be displayed.
If you want the sub-account to properly configure such domain names, you need to authorize it in the CAM console by following the steps below:
Log in to the CAM console and go to the Policies page.
Click Create Custom Policy > Create by Product Feature or Project Permission to enter the Configure Service Types page.
The permissions can be configured by the root account by default. If you are using a sub-account and want to configure the permissions here, make sure that the root account has granted you permissions to do so. The user policy that should be authorized by the root account in this case is
Enter your policy name (e.g., COS_DomainAccess), select CDN as the Service Type, and click Next.
Grant corresponding feature APIs to the sub-account based on your business needs.
Access to and configuration of the default and custom CDN acceleration domain names for a COS bucket involve five features: querying domain name information, adding domain names, enabling/disabling domain names, deleting domain names, and modifying domain name configurations. If you want the sub-account to have full access to the configurations of all domain names on the Domain Management Configuration page, toggle on all these features.
After selecting the corresponding features, click Next to associate objects.
Associate features with objects. Select Associate Objects > All (including resource objects purchased in the future), which must be selected to make the policy configuration fully effective.
Confirm that the permissions are correctly configured and click Complete to create the custom policy.
After the custom policy is created, switch to the User List page, and then associate the sub-account with the policy by clicking Authorize on the right.
In the Associate Policy pop-up window, search for and select the custom policy you just created and click OK.
After the policy is associated, the sub-account is authorized and can log in to the COS console to access and configure the default and custom CDN acceleration domain names for a COS bucket.
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