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How Do I Change My Rds Instance Type Without Downtime? [Solved]
2 AnswersAdd an Aurora reader with the desired new instance type (for example db. t2. medium) to the cluster. Wait until the new instance is up and running.Then failover the cluster so that the new reader gets promoted to a writer.Finally delete the previous Aurora instance of the old instance type.15 Feb 2019
How to Upgrade AWS RDS instance from low to high configuration?
AWS
Upgrade AWS RDS with a minimum downtime
Here we will see how to upgrade
How do I minimize downtime during required Amazon RDS maintenance?
For more details see