doc-exports/docs/obs/perms-cfg/obs_40_0028.html

Granting Other Accounts the Read Permission for Certain Objects

Scenario

This case describes how to grant other accounts (excluding IAM users under the account) the read permission for an object or a type of objects in an OBS bucket. 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 read (download) specific objects using APIs. However, if they download an object from 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+, the ListAllMyBuckets APi is called to load the bucket 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 Read-only.
   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	Include 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 *.

6. Click OK.

Parent topic: Granting Permissions to Other Accounts