What Procfile do I need to launch on Heroku?

huberf 2016-02-26 00:23:35 UTC #1

After creating a Pakyow app on my local computer and pushing it up to Heroku using the steps detailed here, the app fails to serve pages with the error message "No web processes running" displayed in the server logs, and the default "Application Error" message being displayed on the website user's side.

Upon initiating the "git push heroku master" command, two of the messages that appear while it's deploying are: "No Procfile detected, using the default web server (webrick)" and at a later point "Procfile declares types -> (none)"

Although I am not certain this is a Procfile issue, it does appear that the various messages point to the lack of a Procfile being the cause.

bryanp 2016-02-26 00:47:26 UTC #2

Hi @huberf! Here's the Procfile for one of my apps running on Heroku:

web: bundle exec puma -C config/puma.rb -p $PORT

With the above you'd also need puma in your Gemfile and to create a config/puma.rb file that contains something like the following:

workers Integer(ENV['WEB_CONCURRENCY'] || 2)
threads_count = Integer(ENV['MAX_THREADS'] || 5)
threads threads_count, threads_count

# Default to production
environment ENV['RACK_ENV'] || 'production'

bind 'tcp://0.0.0.0:8080'

Hope this helps!

huberf 2016-02-26 02:34:29 UTC #3

@bryanp your above information didn't have any affect on the state of the Heroku site, so I decided to start over and begin from scratch. Whenever I try to push this new site to Heroku it says 'Failed to install gems via bundler'. This is another issue entirely, so I'll open it up in a different forum post, and then revisit this after I've worked out the other one.

Taddy 2017-12-10 09:53:53 UTC #4

I have exactly same problem, are there any other ideas?

bryanp 2017-12-11 15:55:42 UTC #5

@Taddy I'm not entirely sure what's causing that as I've not encountered it myself. Do you know what gem is failing to install? Anything useful in the logs?