deploy.rb

set :application, "myapp"
set :repository,  "git@myhost.com:myapp.git"
set :user, 'deploy'

set :ssh_options, {:forward_agent => true}
  
# If you have previously been relying upon the code to start, stop 
# and restart your mongrel application, or if you rely on the database
# migration code, please uncomment the lines you require below

# If you are deploying a rails app you probably need these:

#load 'ext/rails-database-migrations.rb'
#load 'ext/rails-shared-directories.rb'

# There are also new utility libaries shipped with the core these 
# include the following, please see individual files for more
# documentation, or run `cap -vT` with the following lines commented
# out to see what they make available.

# load 'ext/spinner.rb'              # Designed for use with script/spin
# load 'ext/passenger-mod-rails.rb'  # Restart task for use with mod_rails
# load 'ext/web-disable-enable.rb'   # Gives you web:disable and web:enable

# If you aren't deploying to /u/apps/#{application} on the target
# servers (which is the default), you can specify the actual location
# via the :deploy_to variable:
set :deploy_to, "/var/www/#{application}"

# If you aren't using Subversion to manage your source code, specify
# your SCM below:
set :scm, :git
set :git_enable_submodules, 1
set :use_sudo, :true
set :runner, "www-data"
# see a full list by running "gem contents capistrano | grep 'scm/'"

role :web, "myhost.com"
role :app, "myhost.com"
role :db, "myhost.com", :primary => true

## bdrb
namespace :bdrb do
  desc "Stop the backgroundrb server"
  task :stop, :roles => :app do
    run "cd #{current_path} && ./script/backgroundrb stop"
  end

  desc "Start the backgroundrb server"
  task :start, :roles => :app do
    run "cd #{current_path} && RAILS_ENV=production ./script/backgroundrb start"
  end

  desc "Start the backgroundrb server"
  task :restart, :roles => :app do
    stop
    start
  end
end

## Migrations
namespace :db do
  desc "Migrate datbase"
  task :migrate, :roles => :db, :env => true do
    run "cd #{current_path} && RAILS_ENV=production rake db:migrate"
  end
end

namespace :deploy do
  task :start, :roles => :app do
    run "touch #{current_release}/tmp/restart.txt"
  end

  task :stop, :roles => :app do
    # Do nothing.
  end

  desc "Restart Application"
  task :restart, :roles => :app do
    run "touch #{current_release}/tmp/restart.txt"
  end
end

namespace :deploy do
  task :localize, :roles => :app do
    sudo "chown -R #{user}:#{runner} #{release_path}/tmp"
    sudo "chown -R #{user}:#{runner} #{release_path}/log"
    sudo "chown -R #{user}:#{runner} #{shared_path}/pids"
    
    # Symlink Product Pictures
    sudo "rm -rf #{release_path}/public/assets"
    sudo "ln -nsf #{shared_path}/assets #{current_path}/public/assets"
    sudo "chmod 777 #{release_path}/public/assets"
    
    %w[database.yml].each do |f|
      run "rm -f #{current_path}/config/#{f}"
      run "ln -nsf #{shared_path}/system/#{f} #{current_path}/config/#{f}"
    end
    
  end
end

after "deploy:symlink", "deploy:localize"
before "deploy:restart", ["db:migrate"]