Amazon Web Services AWS Certified Associate SOA-C02 Question # 33 Topic 4 Discussion

To share an encrypted Amazon RDS DB instance snapshot across accounts, the least administrative overhead involves directly managing permissions on the AWS KMS key and sharing the snapshot. Here’s how to do it:

Take a Snapshot: Initiate a snapshot of your Amazon RDS DB instance in the production account. This captures the current state of the database.

Modify KMS Key Policy: Adjust the policy of the KMS key used for encryption (identified by the alias 'production-rds-key') to grant the kms:Decrypt permission to the migration account’s root user. This step is crucial as it allows the migration account to use the same encryption key to decrypt the snapshot.

Share the Snapshot: Share the newly created snapshot with the migration account using the RDS console or AWS CLI. The migration account will now be able to see and use this snapshot to create a new RDS instance.

AWS Documentation Reference:You can refer to the AWS documentation on sharing encrypted snapshots: Sharing Encrypted Snapshots.