ошибка с puma на локальном сервере

Question

Недавно я добавил puma в свое приложение для лучшей производительности на герою. мое приложение работает хорошо в производстве (живой) среды, но я получаю и ошибка в моей локальной среде ..

ошибку, когда я пытаюсь запустить свой сервер:

Art West@ARTWESTIV ~/desktop/drinkPGH (master) 
$ rails s 
=> Booting Puma 
=> Rails 4.1.8 application starting in development on http://0.0.0.0:3000 
=> Run `rails server -h` for more startup options 
=> Notice: server is listening on all interfaces (0.0.0.0). Consider using 127.0.0.1 (--binding option) 
=> Ctrl-C to shutdown server 
[11868] *** SIGUSR2 not implemented, signal based restart unavailable! 
[11868] *** SIGUSR1 not implemented, signal based restart unavailable! 
[11868] *** SIGHUP not implemented, signal based logs reopening unavailable! 
[11868] Puma starting in cluster mode... 
[11868] * Version 3.0.2 (ruby 2.1.5-p273), codename: Plethora of Penguin Pinatas 
[11868] * Min threads: 5, max threads: 5 
[11868] * Environment: development 
[11868] * Process workers: 2 
[11868] * Preloading application 
[11868] * Listening on tcp://0.0.0.0:3000 
Exiting 
c:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/puma-3.0.2/lib/puma/cluster.rb:320:in `trap': unsupported signal SIGCHLD (ArgumentError) 
     from c:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/puma-3.0.2/lib/puma/cluster.rb:320:in `setup_signals' 
     from c:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/puma-3.0.2/lib/puma/cluster.rb:389:in `run' 
     from c:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/puma-3.0.2/lib/puma/launcher.rb:173:in `run' 
     from c:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/puma-3.0.2/lib/rack/handler/puma.rb:51:in `run' 
     from c:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/rack-1.5.5/lib/rack/server.rb:264:in `start' 
     from c:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/railties-4.1.8/lib/rails/commands/server.rb:69:in `start' 
     from c:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/railties-4.1.8/lib/rails/commands/commands_tasks.rb:81:in `block in server' 
     from c:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/railties-4.1.8/lib/rails/commands/commands_tasks.rb:76:in `tap' 
     from c:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/railties-4.1.8/lib/rails/commands/commands_tasks.rb:76:in `server' 
     from c:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/railties-4.1.8/lib/rails/commands/commands_tasks.rb:40:in `run_command!' 
     from c:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/railties-4.1.8/lib/rails/commands.rb:17:in `<top (required)>' 
     from bin/rails:4:in `require' 
     from bin/rails:4:in `<main>' 

и мой Gemfile:

source 'https://rubygems.org' 


# Bundle edge Rails instead: gem 'rails', github: 'rails/rails' 
gem 'rails', '4.1.8' 
# Use sqlite3 as the database for Active Record 

# 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 
gem 'bootstrap-sass' 


group :production do 
    gem 'pg' 
    gem 'rails_12factor' 
    gem 'puma' 
end 

group :development, :test do 
    gem 'sqlite3' 

end 

# 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] 

# Windows does not include zoneinfo files, so bundle the tzinfo-data gem 
gem 'tzinfo-data', platforms: [:mingw, :mswin] 

мой config.puma

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

preload_app! 

rackup  DefaultRackup 
port  ENV['PORT']  || 3000 
environment ENV['RACK_ENV'] || 'development' 

on_worker_boot do 
    # Worker specific setup for Rails 4.1+ 
    # See: https://devcenter.heroku.com/articles/deploying-rails-applications-with-the-puma-web-server#on-worker-boot 
    ActiveRecord::Base.establish_connection 
end 

Answer 1

Не положительны это решит вашу проблему. Обычно я запускаю приложение локально с помощью мастера. Документация puma для рельсов предлагает запустить локальный сервер следующим образом:

rails s Puma 

Для чего это стоит.

Answer 2

workers Integer(ENV['WEB_CONCURRENCY'] || 2) 

(не исправление), комментируя линию 1 из конфигурации/puma.rb, я был в состоянии работать пуму в развитии.

или

workers Integer(ENV['WEB_CONCURRENCY'] || 0) also works