提前终止工作人员 puma 日志意味着什么？为什么会发生这种情况？

对于我的 Elastic Beanstalk 实例，我得到了504每当我访问它时状态代码响应。当我跟踪日志时，我在 puma 应用服务器上看到以下日志：

==> /var/log/puma/puma.log <==
[27240] Early termination of worker
[27245] Early termination of worker
[27249] Early termination of worker
[27253] Early termination of worker
[27257] Early termination of worker
[27261] Early termination of worker
[27265] Early termination of worker
[27269] Early termination of worker
[27273] Early termination of worker
[27277] Early termination of worker

什么是Early termination of worker意思是什么以及为什么会发生？此外，日志是否可以指示我在远程环境中遇到的超时错误的原因？ Rails 应用程序和 puma 在我的本地计算机（Mac OS Catalina 10.15）上完美运行。但是，在如上所述的远程 Elastic beanstalk 环境中，我收到超时 504 错误，并且我在日志中看到的唯一内容是上面的 puma 日志。

这是我的宝石文件：

source 'https://rubygems.org'
git_source(:github) { |repo| "https://github.com/#{repo}.git" }

# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '~> 6.0.1'
# Use mysql as the database for Active Record
gem 'mysql2', '>= 0.4.4'
# Use Puma as the app server
gem 'puma', '~> 4.1'
# Transpile app-like JavaScript. Read more: https://github.com/rails/webpacker
gem 'webpacker', '~> 4.0'
# Turbolinks makes navigating your web application faster. Read more: https://github.com/turbolinks/turbolinks
gem 'turbolinks', '~> 5'
# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 2.7'
# Use haml view syntax
gem 'haml-rails'

# the main komponent gem is broken for Rails 6, see:
# https://github.com/komposable/komponent/issues/133
gem 'komponent', github: '0x2C6/komponent'
gem 'elasticsearch', '~> 6.2'
gem 'redis'

# Use Active Model has_secure_password
# gem 'bcrypt', '~> 3.1.7'

# Use Active Storage variant
# gem 'image_processing', '~> 1.2'

# Reduces boot times through caching; required in config/boot.rb
gem 'bootsnap', '>= 1.4.2', require: false

group :development, :test do
  # Call 'byebug' anywhere in the code to stop execution and get a debugger console
  gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
  gem 'pry-rails'
  gem 'rspec-rails', '~> 3.9'
  gem 'dotenv-rails'
  gem 'awesome_print'
end

group :beta, :production do
  gem 'puma_worker_killer'
end

group :development do
  # Access an interactive console on exception pages or by calling 'console' anywhere in the code.
  gem 'web-console', '>= 3.3.0'
  gem 'listen', '>= 3.0.5', '< 3.2'
  # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
  gem 'spring'
  gem 'spring-watcher-listen', '~> 2.0.0'
  gem 'spring-commands-rspec'
   # Avoid polling for changes (Windows)
  gem 'wdm', '>= 0.1.0', platforms: [:mingw, :mswin, :x64_mingw, :jruby]
end

group :test do
  gem 'webmock'
end

# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]

我的案例的问题是所使用的 puma 补丁版本不同。

要点是 AWS Elastic Beanstalk 正在使用puma 4.3.3当我使用时puma 4.3.5.

必须修复版本puma在我的 Gemfile 中准确地使用4.3.3匹配 AWS Elastic Beanstalk 今天使用的堆栈可以防止此错误。

更多详情请参阅我的这个答案在这里 https://stackoverflow.com/a/62079968/2667545对于类似的问题。