Resque: automatically kill stuck workers and retry failed jobs

resque-recovery.sh

#!/bin/bash

# Also see: http://vitobotta.com/resque-automatically-kill-stuck-workers-retry-failed-jobs/

[[ -f /tmp/retry-failed-resque-jobs ]] && rm /tmp/retry-failed-resque-jobs

ps -eo pid,command | 
grep [r]esque | 
grep "Processing" |
while read PID COMMAND; do  
	if [[ -d /proc/$PID ]]; then
		SECONDS=`expr $(awk -F. '{print $1}' /proc/uptime) - $(expr $(awk '{print $22}' /proc/${PID}/stat) / 100)`

		if [ $SECONDS -gt 50 ]; then
			kill -9 $PID

			touch /tmp/retry-failed-resque-jobs
			
			QUEUE=`echo "$COMMAND" | cut -d ' ' -f 3`

			echo "
				The forked child with pid #$PID (queue: $QUEUE) was found stuck for longer than 50 seconds.
				It has now been killed and job(s) flagged as failed as a result have been re-enqueued.
				
				You may still want to check the Resque UI and the status of the workers for problems.
			" | mail -s "Killed stuck Resque job on $(hostname) PID $PID" email@address.com

		fi
	fi
done 

if [[ -f /tmp/retry-failed-resque-jobs ]]; then
	/bin/bash -c 'export rvm_path=/usr/local/rvm && export HOME=/home/deploy && . $rvm_path/scripts/rvm && cd /var/www/sites/dashboard/current/ && /usr/local/bin/rvm rvmrc load && RAILS_ENV=production bundle exec rake resque:retry-failed-jobs'
fi

resque.rake

require "resque/tasks"

require 'resque/pool/tasks'
# this task will get called before resque:pool:setup
# and preload the rails environment in the pool manager
task "resque:setup" => :environment do
  # generic worker setup, e.g. Hoptoad for failed jobs
end
task "resque:pool:setup" do
  # close any sockets or files in pool manager
  ActiveRecord::Base.connection.disconnect!
  # and re-open them in the resque worker parent
  Resque::Pool.after_prefork do |job|
    ActiveRecord::Base.establish_connection
  end
end

desc "Retries the failed jobs and clears the current failed jobs queue at the same time"
task "resque:retry-failed-jobs" => :environment do
  (Resque::Failure.count-1).downto(0).each { |i| Resque::Failure.requeue(i) }; Resque::Failure.clear
end

I've used and update it to my needs, without using /proc to make it work on OSX as well :)
https://gist.github.com/jobwat/5712437

thanks for sharing !