certificate Rotation Restart
A value that indicates whether the DB instance is restarted when you rotate your SSL/TLS certificate. By default, the DB instance is restarted when you rotate your SSL/TLS certificate. The certificate is not updated until the DB instance is restarted. If you are using SSL/TLS to connect to the DB instance, follow the appropriate instructions for your DB engine to rotate your SSL/TLS certificate This setting doesn't apply to RDS Custom.