Rails 4 using different db with different tables

Question

Seem's that i have one little question-trouble:

i have my rails application on server, let's say name A, and i use there all tables(let's say table1, table2).... But now i need to buy one more server, name B. And from there i must use some tables too (let's say table3, table4).

Is it really to use in rails two different db, from different server's? And how to do this? What to write than in ActiveModel files ?

Now i simple have database.yml with one db. How to set up some edit, as i say in question?

Answer 1

It is possible

In database YML:

development:
  adapter: mysql2
  encoding: utf8
  reconnect: false
  database: app_development
  pool: 5
  username: root
  password:
  host: localhost


aux_development:
  adapter: mysql2
  encoding: utf8
  reconnect: false
  database: aux_development
  pool: 5
  username: root
  password:
  socket: /var/run/mysqld/mysqld.sock

All your models will use 'development' database. If you want one of them to use 'aux_development' just:

class OtherModel < ActiveRecord::Base
  establish_connection "aux_#{Rails.env}"
end