RDSのパスワード管理方法の設定変更について

AWS CLI で設定を変更出来るみたいです。

https://awscli.amazonaws.com/v2/documentation/api/latest/reference/rds/modify-db-instance.html

aws rds modify-db-instance に --no-manage-master-user-password オプションと --master-user-password <Password> オプションを付ける必要があります。

If the DB instance already manages the master user password with Amazon Web Services Secrets Manager, and you specify that the master user password is not managed with Amazon Web Services Secrets Manager, then you must specify MasterUserPassword. In this case, Amazon RDS deletes the secret and uses the new password for the master user specified by MasterUserPassword.