---
application_stack:
  components:
    database:
    - id: database1
      host: host1
    - id: database2
      host: host2
    app_server:
    - id: app_server1
      host: host3
      database:
      - database1
      - database2
    - id: app_server2
      host: host4
      database:
      - database2
    web_server:
    - id: web_server1
      host: host1
      database:
      - database1
      - database2
      app_server:
      - app_server1
      - app_server2
    - id: web_server2
      host: host2
      database:
      - database1
      app_server:
      - app_server2
    load_balancer:
    - id: load_balancer1
      host: host1
      web_server:
      - web_server1
    - id: load_balancer2
      host: host1
      web_server:
      - web_server2
  frontend:
    - load_balancer1