AWS RDS: как увидеть все нужные данные для соединения?

Хм, всё сделал

Two things to check:

    Ensure that the RDS instance has the publicly accessible attribute set so that it is assigned a public address

    Also according to the AWS RDS docs, "If you want your DB instance in the VPC to be publicly accessible, you must enable the VPC attributes DNS hostnames and DNS resolution."

Also, check that the IP that your RDS instance hostname resolves to is a public IP address.

не помогло(((