deploy.rb

# Start SSH session on first available server
task :ssh do
  hostname = find_servers_for_task(current_task).first
  exec %Q|ssh -l #{user} #{hostname} -t '#{default_shell}'|
end

# Start Rails console on first available server
namespace :rails do
  task :console, :roles => :app do
    hostname = find_servers_for_task(current_task).first
    exec %Q|ssh -l #{user} -p #{ssh_options[:port] || 22} #{hostname} -t 'bash -l -c "cd #{current_path} && bundle exec rails console #{rails_env}"'|
  end
end