What are the required steps to upgrade an Amazon RDS instance to a newer version of the underlying database engine?
To upgrade an Amazon RDS instance to a newer version of the underlying database engine, follow these steps:
1. Check compatibility : Review release notes and test application with new engine version in a separate environment.
2. Create snapshot : Before upgrading, create a manual DB snapshot for backup and rollback purposes.
3. Schedule maintenance window: Choose a suitable time frame when your application can tolerate downtime during the upgrade process.
4. Modify instance: In the AWS Management Console or using CLI/API, modify the DB instance by selecting the desired engine version.
5. Monitor progress: Track the upgrade status through CloudWatch metrics, events, and logs.
6. Test application: After the upgrade is complete, verify that your application works correctly with the new engine version.
7. Update clients: If necessary, update client applications to use any new features or changes introduced in the upgraded engine.
