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Setting Object Access Permission

Last updated: 2021-08-18 10:57:34


    COS allows you to set object access permissions, which have a higher priority than those for buckets.


    • Object access permissions take effect only when the access is made via the default endpoint. For any access made via a CDN acceleration endpoint or a custom endpoint, bucket access permissions will take effect.
    • There are limits on the number of ACL rules. For more information, please see Specifications and Limits.


    1. Log in to the COS console.
    2. In the left sidebar, click Bucket List to go to the bucket list page.
    3. Locate the bucket where the object resides and click the bucket name to go to the bucket management page.
    4. In the left sidebar, choose File List to go to the file list page.
    5. Locate the object for which you want to configure the access permission, and click Details on the right to go to the file details page (If it is a folder, click Permissions on the right).
    6. In the Object ACL(Access Control List) area, configure access permissions as needed.
      For example, you can grant object permissions to a sub-account. The sub-account ID can be viewed in the CAM console.

      COS supports two types of permissions for objects:
      • Public Permission: includes Inherit, Private Read/Write, and Public Read/Private Write. For more information about public permissions, please see Access Permission Types.
      • User ACL: The root account has all object permissions (full control) by default. You can also add sub-accounts and grant them permissions including read/write, read/write ACL, and even full control.
    7. Click Save.
      If you need to configure or modify access permissions for multiple objects at a time, you can select the objects on the File List page and then click Modify Access Permission from the More Actions drop-down list at the top.
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