unicorn on heroku

In  config/unicorn.rb


 

	config/unicorn.rb
	# With a typical Rails memory footprint, you can expect to run 2-4 Unicorn worker processes.
	# https://devcenter.heroku.com/articles/rails-unicorn
	# config/unicorn.rb
	worker_processes Integer(ENV["WEB_CONCURRENCY"] || 1)
	timeout 15
	preload_app true
	before_fork do |server, worker|
	Signal.trap 'TERM' do
	puts 'Unicorn master intercepting TERM and sending myself QUIT instead'
	Process.kill 'QUIT', Process.pid
	end
	defined?(ActiveRecord::Base) and
	ActiveRecord::Base.connection.disconnect!
	end
	after_fork do |server, worker|
	Signal.trap 'TERM' do
	puts 'Unicorn worker intercepting TERM and doing nothing. Wait for master to send QUIT'
	end
	defined?(ActiveRecord::Base) and
	ActiveRecord::Base.establish_connection
	end

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Procfile

 

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

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Gemfile






 

	source 'https://rubygems.org'
	ruby '2.1.3'
	# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
	gem 'rails', '4.1.6'
	gem 'unicorn'
	group :production do
	gem "rails_12factor"
	end
	gem "pg"
	group :development, :test do
	# gem "sqlite3", :require => "sqlite3"
	gem "better_errors"
	gem "binding_of_caller"
	end
	gem "faker"
	gem "devise"
	gem 'simple_form'
	gem 'annotate'
	gem 'bootstrap-generators', '~> 3.0.2'
	gem 'high_voltage'
	gem 'will_paginate', '~> 3.0'
	gem 'will_paginate-bootstrap'
	gem 'groupdate'
	gem 'chartkick'
	# Use Uglifier as compressor for JavaScript assets
	gem 'uglifier', '>= 1.3.0'
	# Use CoffeeScript for .js.coffee assets and views
	# See https://github.com/sstephenson/execjs#readme for more supported runtimes
	# gem 'therubyracer', platforms: :ruby
	# Use jquery as the JavaScript library
	# gem 'jquery-rails'
	# Use sqlite3 as the database for Active Record
	# gem 'sqlite3'
	# Use SCSS for stylesheets
	# gem 'sass-rails', '~> 4.0.3'
	# Use Uglifier as compressor for JavaScript assets
	# gem 'uglifier', '>= 1.3.0'
	# Use CoffeeScript for .js.coffee assets and views
	# gem 'coffee-rails', '~> 4.0.0'
	# See https://github.com/sstephenson/execjs#readme for more supported runtimes
	# gem 'therubyracer', platforms: :ruby
	# Use jquery as the JavaScript library
	gem 'jquery-rails'
	# Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
	# gem 'turbolinks'
	# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
	# gem 'jbuilder', '~> 2.0'
	# bundle exec rake doc:rails generates the API under doc/api.
	# gem 'sdoc', '~> 0.4.0', group: :doc
	# Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
	gem 'spring', group: :development
	# Use ActiveModel has_secure_password
	# gem 'bcrypt', '~> 3.1.7'
	# Use unicorn as the app server
	# gem 'unicorn'
	# Use Capistrano for deployment
	# gem 'capistrano-rails', group: :development
	# Use debugger
	# gem 'debugger', group: [:development, :test]

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or start on localhost bundle exec unicorn -p 3000