development:
  clients:
    default:
      database: last_stop_development
      hosts:
        - localhost:27017
      options:
  options:
test:
  clients:
    default:
      database: last_stop_test
      hosts:
        - localhost:27017
      options:
        read:
          mode: :primary
        max_pool_size: 1
production:
  clients:
    default:
      database: last-stop
      hosts:
        - ENV['MONGODB_URI']
      options:
        user: ENV['MONGODB_USER']
        password: ENV['MONGODB_PASSWORD']
        read:
          mode: :primary
        max_pool_size: 5

production:
  clients:
    default:
      database: last-stop
      hosts:
        - ENV['MONGODB_URI']
      options:
        user: ENV['MONGODB_USER']
        password: ENV['MONGODB_PASSWORD']
        read:
          mode: :primary
        max_pool_size: 5
development:
  clients:
    default:
      database: last_stop_development
      hosts:
        - localhost:27017
      options:
  options:
test:
  clients:
    default:
      database: last_stop_test
      hosts:
        - localhost:27017
      options:
        read:
          mode: :primary
        max_pool_size: 1

Change layout of config.yml file
Change layout of config.yml file
