production:
  ..

observium:
  adapter: mysql2
  database: observium
  username: username
  password: password
  host: observium.domain.com
  port: 3306
  wait_timeout: 86400


development:
  ..

class ObserviumPort < ActiveRecord::Base

  establish_connection :observium

  self.table_name = 'ports'

  def self.get_port(circuit)
    result = ObserviumPort.find(
      :first,
      :conditions => ['port_descr_circuit = ?', circuit.id],
      :order => 'ifName ASC',
      :limit => 1
    )

    return result.port_id
  end

Mysql2::Error (Can't connect to MySQL server on 'observium.domain.com' (4)):