gistfile1.rb

# (1) clone app_production to app_staging
# (2) hit it a couple times so it can cache any s3/etc. data it needs to start up (once you change the data, s3/etc. won't work)
# (3) cap y2k:set DATE="2010-01-01"
# (4) ...test the site...
# (5) cap y2k:unset
task :app_staging do
  set :rails_env, 'production'
  set :deploy_to, '/data/app'
  role :app, "ec2-X-X-X-X.compute-1.amazonaws.com"
  role :app, "ec2-Y-Y-Y-Y.compute-1.amazonaws.com"
  role :db, "ec2-Z-Z-Z-Z.compute-1.amazonaws.com"
end
namespace :y2k do
  task :set, :roles => [:app, :db] do
    raise "need DATE" unless ENV['DATE'].present?
    app_staging
    run "#{sudo} sh -c \"echo 1 > /proc/sys/xen/independent_wallclock\""
    run "#{sudo} date --set=\"#{ENV['DATE']}\""
    run 'date'
  end
  task :unset, :roles => [:app, :db] do
    app_staging
    Time.zone = "Pacific Time (US & Canada)"
    run "#{sudo} sh -c \"echo 1 > /proc/sys/xen/independent_wallclock\""
    run "#{sudo} date --set=\"#{Time.zone.now}\""
    run "#{sudo} sh -c \"echo 1 > /proc/sys/xen/independent_wallclock\""
    run 'date'
  end
end