A sample CAP file capistrano

cap.rb

load 'deploy' if respond_to?(:namespace)

require 'railsless-deploy'
require 'capistrano_colors'
set :application, "grata"
set :user, "ubuntu"
set :use_sudo, false


# Forward your github ssh keys to the server
ssh_options[:forward_agent] = true
default_run_options[:pty] = true

set :scm, :git
set :repository,  "[email protected]:marcoi/Grata.git"
set :deploy_via, :remote_cache
set :deploy_to, "/home/#{user}/cap/#{application}"

default_run_options[:shell] = '/bin/bash'

ssh_options[:keys] = ["KEY.pem"] # make sure you also have the publickey


desc "Run on staging server"
task :staging do
  server "176.34.176.2", :app, :web, :db, :primary => true
  set :config_env, 'staging'
end

desc "Run on production server"
task :production do
  answer = Capistrano::CLI.ui.ask("
    You are deploying to PRODUCTION , Are you sure?
    Type YES (uppercase) to continue:")

  if (answer == 'YES')
    Capistrano::CLI.ui.say "Deploying"
  else
    Capistrano::CLI.ui.say "Aborting"
    abort
  end

  server "54.246.98.1", :app, :web, :db, :primary => true
  set :config_env, 'prod'
end

set :runner, user
set :admin_runner, user

namespace :deploy do
  task :start do ; end
  task :stop do ; end

  task :restart_server, :roles => :app do
    runner = "echo 'going to supervisor'"
    run "exec #{runner}"

    venv = "source /home/ubuntu/virtual_env/grata/bin/activate"
    run "#{venv}; pip install -r /home/ubuntu/cap/grata/current/requirements.txt"

    # We dont restart mongo: sudo supervisorctl restart tornado
    runner = "sudo supervisorctl restart tornado"
    run "exec #{runner}"
    runner = "sudo supervisorctl restart nginx"
    run "exec #{runner}"
  end

  desc "Copies config over"
  task :copy_config, :roles => :app do
    run = "exec echo 'copying ordinary config'"
    config_copy = "sudo cp /home/ubuntu/cap/grata/current/deploy/manual_config/*.conf /etc/supervisor/conf.d/"
    run "exec #{config_copy}"

    if (config_env)
      run = "exec 'copying custom config " + config_env + "'"
      config_copy = "sudo cp /home/ubuntu/cap/grata/current/deploy/manual_config/"+config_env+"/*.conf /etc/supervisor/conf.d/"
      run "exec #{config_copy}"
    end
  end
end

after "deploy:finalize_update", "deploy:copy_config"
after "deploy:symlink", "deploy:restart_server"