boto3 RDS get all Database names of a DB instance

问题

I have 2 database name of MySQL Aurora for same host, username and password. Like Below

{"host": "aaaa....rds.amazonaws.com"  , "username": "test", "password": "test", "database": "db1" }

Similarly

{"host": "aaaa....rds.amazonaws.com"  , "username": "test", "password": "test", "database": "db2" }

But I can not find the second database name while I am trying to access rds database instances by using boto 3 as stated below

 rds.describe_db_instances()['DBInstances']

It only return db1 not the db2

Can any one help me where and how can I find db2

来源：https://stackoverflow.com/questions/51477898/boto3-rds-get-all-database-names-of-a-db-instance