Running unicorn gracefully on Heroku

Running unicorn gracefully on Heroku

[Seamus Abshere]

hi,

I just posted a StackOverflow question about running unicorn gracefully 
on Heroku...

http://stackoverflow.com/questions/9605703/how-can-i-tell-unicorn-to-understand-herokus-signals

Would this group be able to provide any wisdom?

Thank you.

Best,
Seamus

PS. Please CC: me on any responses!

-- 
Seamus Abshere


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Re: Running unicorn gracefully on Heroku

[Eric Wong]

Seamus Abshere <seamus@abshere.net> wrote:
> I just posted a StackOverflow question about running unicorn
> gracefully on Heroku...
> 
> http://stackoverflow.com/questions/9605703/how-can-i-tell-unicorn-to-understand-herokus-signals

Ugh, can you just send/copy the question over here next time so we don't
have to follow a link and parse out?  Thanks.

> Would this group be able to provide any wisdom?

It's best to talk to the Heroku folks about this since it's their
service.  Maybe some of them hang out on this ML...

> PS. Please CC: me on any responses!

Done, thanks for the heads up.
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Re: Running unicorn gracefully on Heroku

[Alex Sharp]

This guy seems to have figured it out: http://michaelvanrooijen.com/articles/2011/06/01-more-concurrency-on-a-single-heroku-dyno-with-the-new-celadon-cedar-stack/

--
Alex Sharp

Zaarly, Inc | @ajsharp | github.com/ajsharp | alexjsharp.com 

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Re: Running unicorn gracefully on Heroku

[Jamie Wilkinson]

On Mar 7, 2012, at 1:27 PM, Alex Sharp wrote:

> This guy seems to have figured it out: http://michaelvanrooijen.com/articles/2011/06/01-more-concurrency-on-a-single-heroku-dyno-with-the-new-celadon-cedar-stack/

Yeah this works great, I've used it for all my Heroku rails apps without issue for a while now. You just put unicorn in your bundle, make a Procfile like

	web: bundle exec unicorn -p $PORT -c ./config/unicorn.rb

and a config/unicorn.rb like

	worker_processes 2
	timeout 5 # Heroku timeout is 5s

Related: like this post[1] I'm also interested in a smarter way to trap Heroku's SIGINT restarts into a unicorn USR2-styl restart, so we can actually take advantage of unicorn. At high concurrency Heroku's "kill world" restarts cause a lot of errors.

[1] <http://stackoverflow.com/questions/9605703/how-can-i-tell-unicorn-to-understand-herokus-signals>


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