Which migration method should a Database Specialist use?
Take a snapshot of the RDS for MySQL DB instance and create a new Aurora DB cluster with the option to migrate snapshots.
Make a backup of the RDS for MySQL DB instance using the mysqldump utility, create a new Aurora DB cluster, and restore the backup.
Create an Aurora Replica from the RDS for MySQL DB instance and promote the Aurora DB cluster.
Create a clone of the RDS for MySQL DB instance and promote the Aurora DB cluster.
Explanations:
Taking a snapshot of an RDS for MySQL DB instance and migrating to Aurora using snapshot migration is not supported. Aurora migrations require the use of the database migration service or replication methods.
Using mysqldump to backup and restore data into Aurora is an option but does not minimize downtime. This method involves downtime during the backup and restore process, which is not ideal for minimizing downtime.
Creating an Aurora Replica from an RDS for MySQL DB instance and promoting the Aurora DB cluster is the recommended method to minimize downtime. This allows replication to occur in the background with minimal disruption. Once the replica is synchronized, it can be promoted to the primary database with little downtime.
Creating a clone of an RDS for MySQL DB instance is not a valid migration path to Aurora. Cloning is for creating an exact copy of the RDS instance, not for migrating to Aurora.
To the best of my knowledge, the answer is:
Create an Aurora Replica from the RDS for MySQL DB instance and promote the Aurora DB cluster.