- name: Attach existing RDS instance
  hosts: localhost
  roles:
    - { role: check }
    - { role: s3, when: "backend|bool == true" }
    - { role: dynamodb, when: "backend|bool == true" }
    - { role: attach_existing_rds }
  environment:
    AWS_ACCESS_KEY_ID: "{{ aws_access_key }}"
    AWS_SECRET_ACCESS_KEY: "{{ aws_secret_key }}"
    AWS_REGION: "{{ region }}"