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Amazon Simple Storage Service
Developer Guide (API Version 2006-03-01)

Walkthrough 3: Change Replica Owner to Destination Bucket Owner

In this exercise, you update replication configuration in exercise 2 (Walkthrough 2: Configure Cross-Region Replication Where Source and Destination Buckets Are Owned by Different AWS Accounts) to direct Amazon S3 to change the replica owner to the AWS account that owns the destination bucket. For more information about optionally changing the replica ownership, see Cross-Region Replication Additional Configuration: Change Replica Owner.

  1. Complete walkthrough 2. For instructions, see Walkthrough 2: Configure Cross-Region Replication Where Source and Destination Buckets Are Owned by Different AWS Accounts.

  2. Update the replication configuration rule by adding the <AccessControlTranslation> element, as shown following:

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    <ReplicationConfiguration xmlns="http://s3.amazonaws.com/doc/2006-03-01/"> <Role>arn:aws:iam::account-id:role/role-name</Role> <Rule> <Status>Enabled</Status> <Prefix></Prefix> <Destination> <Bucket>arn:aws:s3:::destinationbucket</Bucket> <Account>destination-bucket-owner-account-id</Account> <StorageClass>storage-class</StorageClass> <AccessControlTranslation> <Owner>Destination</Owner> </AccessControlTranslation> </Destination> </Rule> </ReplicationConfiguration>

    In this example, you can use either the AWS CLI or the AWS SDK to add the replication configuration. You cannot use the console because the console does not support specifying a destination bucket that is in different AWS account.

    • Using the AWS CLI.

      The AWS CLI requires you to specify the replication configuration as JSON. Save the following JSON in a file (replication.json).

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      { "Role": "arn:aws:iam::AWS-ID-Account-A:role/role-name", "Rules": [ { "Prefix": "Tax", "Status": "Enabled", "Destination": { "Bucket": "arn:aws:s3:::destination-bucket", "AccessControlTranslation" : { "Owner" : "Destination" } } } ] }

      Update the JSON by providing the bucket name and role Amazon Resource Name (ARN). Then, run the AWS CLI command to add replication configuration to your source bucket:

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      $ aws s3api put-bucket-replication \ --bucket source-bucket \ --replication-configuration file://replication.json \ --profile accountA

      For instructions on how to set up the AWS CLI, see Setting Up the Tools for the Example Walkthroughs.

      You can use the get-bucket-replication command to retrieve the replication configuration:

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      $ aws s3api get-bucket-replication \ --bucket source-bucket \ --profile accountA
    • Using the AWS SDK for Java.

      For a code example, see Setting Up Cross-Region Replication Using the AWS SDK for Java.

  3. In the IAM console, select the IAM role you created, and update the associated permission policy by adding permissions for the s3:ObjectOwnerOverrideToBucketOwner action.

    The updated policy is shown:

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    { "Version":"2012-10-17", "Statement":[ { "Effect":"Allow", "Action":[ "s3:GetReplicationConfiguration", "s3:ListBucket" ], "Resource":[ "arn:aws:s3:::source-bucket" ] }, { "Effect":"Allow", "Action":[ "s3:GetObjectVersionForReplication", "s3:GetObjectVersionAcl" ], "Resource":[ "arn:aws:s3:::source-bucket/*" ] }, { "Effect":"Allow", "Action":[ "s3:ReplicateObject", "s3:ReplicateDelete", "s3:ObjectOwnerOverrideToBucketOwner" ], "Resource":"arn:aws:s3:::destination-bucket/*" } ] }
  4. In the Amazon S3 console, select the destination bucket, and update the bucket policy as follows:

    • Grant the source object owner permission for the s3:ObjectOwnerOverrideToBucketOwner action.

    • Grant the source bucket owner permission for the s3:ListBucket and the s3:ListBucketVersions actions.

    The following bucket policy shows the additional permissions.

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    { "Version":"2008-10-17", "Id":"PolicyForDestinationBucket", "Statement":[ { "Sid":"1", "Effect":"Allow", "Principal":{ "AWS":"source-bucket-owner-aws-account-id" }, "Action":[ "s3:ReplicateDelete", "s3:ReplicateObject", "s3:ObjectOwnerOverrideToBucketOwner" ], "Resource":"arn:aws:s3:::destinationbucket/*" }, { "Sid":"2", "Effect":"Allow", "Principal":{ "AWS":"source-bucket-owner-aws-account-id" }, "Action":[ "s3:ListBucket", "s3:ListBucketVersions" ], "Resource":"arn:aws:s3:::destinationbucket" } ] }
  5. Test the replication configuration in the Amazon S3 console:

    1. Upload the object to the source bucket (in the Tax folder).

    2. Verify that the replica is created in the destination bucket. For the replica, verify the permissions. Notice that the destination bucket owner now has full permissions on the object replica.