rake db:schema:dump is not producing schema for all databases

I have this project and I need to integrate a bunch of databases into my Rails project. This is the database configuration that I have to work with. $ nano config/database.yml production: adapter: mysql2 reconnect: true pool: 5 username: user_xyz password: 123456 database: database1 host: localhost database_2: adapter: mysql2 reconnect: false pool: 5 username: user_xyz password: 123456 database: database2 host: 192.168.2.100 database_3: adapter: mysql2 reconnect: false pool: 5 username: user_xyz password: 123456 database: database3 host: 192.168.2.101 database_4: adapter: mysql2 reconnect: false database: database4 pool: 5 username: user_xyz password: 123456 host: 192.168.2.102 I need to update the schema inside db/schema.rb but unfortunately it's only producing the schema for production (database1). $ RAILS_ENV=production bundle exec rake db:schema:dump I can't just run this as it complains: $ bundle exec rake db:schema:dump rake aborted! database configuration does not specify adapter What do I need to do to get all of these databases into db/schema.rb?