Granting Other Accounts Permissions to Operate a Specific Bucket

The bucket owner (root account) or other accounts and IAM users, who have the permission to set bucket policies, can configure bucket policies to grant the bucket operation permissions to other accounts or IAM users under other accounts.

The following is an example about how to grant other accounts bucket access and object upload permissions.

To grant permissions to IAM users under other accounts, you need to configure both bucket policies and IAM policies.

Configure a bucket policy to allow IAM users to access the bucket.
Configure IAM policies for the account where authorized IAM users belong, to allow the IAM users to access the bucket.

Only permissions that are allowed by both the bucket policy and IAM policies can take effect.

Procedure

In the bucket list, click the bucket you want to operate. The Overview page is displayed.
In the navigation pane, choose Permissions.
Choose Bucket Policies > Custom Bucket Policies.
Click Create Bucket Policy.

Configure the parameters listed in the table below to grant other accounts the bucket access permission. Retain the default values for the other parameters.

**Table 1** Parameters for granting the object listing permission
Parameter	Value
Policy Mode	Customized
Effect	Allow
Principal	Include Select Other account. Enter the account ID and user ID. NOTE: The account ID and user ID can be obtained on the My Credentials page. If you grant the permission only to the account itself, IAM user IDs are not required. If you grant the permission to one or more IAM users under the account, configure both the account ID and IAM user IDs. Use commas (,) to separate multiple IAM user IDs.
Resources	Include Select Entire bucket.
Actions	Include ListBucket

Click OK.
Click Create Bucket Policy. The Create Bucket Policy dialog box is displayed.

Configure the parameters listed in the table below to grant other accounts the object upload permission:

Before granting this permission to a user, ensure that the user has the permission to access the bucket.

**Table 2** Parameters for granting the object upload permission
Parameter	Value
Policy Mode	Customized
Effect	Allow
Principal	Include Select Other account. Enter the account ID and user ID. NOTE: The account ID and user ID can be obtained on the My Credentials page. If you grant the permission only to the account itself, IAM user IDs are not required. If you grant the permission to one or more IAM users under the account, configure both the account ID and IAM user IDs. Use commas (,) to separate multiple IAM user IDs.
Resources	Include Select Specific resources. Resource name: *
Actions	Include PutObject