my capistrano setup for app on MongoDB

deploy.rb

require "bundler/capistrano"
set :application, "quadmint"
set :repository,  "[email protected]:quadmint"

default_run_options[:pty] = true

# set :use_sudo, false
set :scm, :git
# set :scm_command, "/usr/bin/git"

role :app , "127.0.0.1:2222"
role :web , "127.0.0.1:2222"
role :db , "127.0.0.1:2222" , :primary => true


# User vagrant for Vagrant Box.
set :user, "vagrant"
set :deploy_to, "/var/www/#{user}/#{application}"
set :deploy_via, :remote_cache

ssh_options[:forward_agent] = true

# role :db,  "your slave db-server here"

# if you're still using the script/reaper helper you will need
# these http://github.com/rails/irs_process_scripts

# If you are using Passenger mod_rails uncomment this:
namespace :deploy do
  task :start do ; end
  task :stop do ; end
  task :restart, :roles => :app, :except => { :no_release => true } do
    run "#{try_sudo} touch #{File.join(current_path,'tmp','restart.txt')}"
  end
end