Granting Other Accounts Specific Permissions for Specific Objects

Scenario

This section describes how to grant other accounts the permissions to download an object from a bucket.

To grant other permissions, select required actions from Action Name in the bucket policy. For details about the actions supported by OBS, see Action/NotAction.

For details about how to grant permissions to an IAM user, see Granting IAM Users Under an Account the Access to a Bucket and the Resources in It.

Recommended Configuration

Use bucket policies to grant permissions to other accounts.

Precautions

After configuration, they can download objects using APIs. However, if they download objects using OBS Console or OBS Browser+, a message will be displayed indicating that they do not have required permissions.

When they log in to OBS Console or OBS Browser+, APIs (such as ListAllMyBuckets and ListBucket) are called to load the bucket list and object list and some other APIs will also be called on other pages, but their permissions do not cover those APIs. In such case, the message is displayed.

Procedure

1. In the navigation pane of OBS Console, choose Object Storage.
2. In the bucket list, click the bucket name you want to go to the Overview page.
3. In the navigation pane, choose Permissions.
4. On the Bucket Policies page, click Create Bucket Policy under Custom Bucket Policies.
5. Configure a bucket policy.
   Figure 1 Configuring a bucket policy
   

   Table 1 Parameters for creating a bucket policy

   Parameter	Description
   Policy Mode	Select Customized.
   Effect	Select Allow.
   Principal	Select Include > Other account. Account ID: Enter the ID of the account which you want to grant permissions to. You can obtain it from the My Credentials page of the account. User ID: Enter the account ID. You can obtain it from the My Credentials page of the account. NOTE: In this example, permissions are granted to an account, excluding any IAM user under the account. Therefore, the user ID is the same as the account ID.
   Resources	Choose Include > Specific resources. Resource Name: Enter the object or the set of objects that will be accessed. For one object, enter object name. For a set of objects, enter object name prefix + *, * + object name suffix, or *.
   Actions	Include Action Name: Select GetObject. To configure other permissions, select the corresponding actions. For details about the actions supported by OBS, see Action/NotAction.

6. Click OK.