resque workers via upstart runned by unpriviledge user

resque_worker_upstart.sh

#!upstart

description "Workers [resque]"

start on (local-filesystems and net-device-up IFACE=eth0)
stop on shutdown

respawn
respawn limit 99 5
console none

script
   su -c "source '/home/myuser/.rvm/scripts/rvm';rvm 1.9.2; cd /myapp/; RAILS_ENV={env} bundle exec rake resque:work QUEUE=* RESQUE_NAMESPACE={namespace} >> ~/resque_workers.log 2>&1" my_user
end script

restart_workers_cli

$: rake queue:restart_workers

restart_workers_task.rb

require 'resque/tasks'

task "resque:setup" => :environment

namespace :queue do
  task :restart_workers => :environment do
    pids = Array.new    
    Resque.workers.each do |worker|
      pids << worker.to_s.split(/:/).second
    end    
    if pids.size > 0
      system("kill -QUIT #{pids.join(' ')}")
    end
  end
end