Question

我安装了puma gem，当我通过rails s启动rails服务器时，我可以看到完整输出：

$ rails s 
/Users/serj/.rvm/gems/ruby-2.2.1@email_platform/gems/htmlentities-4.3.2/lib/htmlentities/mappings/expanded.rb:465: warning: duplicated key at line 466 ignored: "inodot"
=> Booting Puma
=> Rails 4.1.12 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
Puma 2.12.3 starting...
* Min threads: 0, max threads: 16
* Environment: development
* Listening on tcp://0.0.0.0:3000


Started GET "/templates/41" for 127.0.0.1 at 2015-08-06 14:10:32 -0400
Cache read: accont_by_domain/demo.lvh.me ({:expires_in=>86400 seconds})
Dalli::Server#connect 127.0.0.1:11211
Cache fetch_hit: accont_by_domain/demo.lvh.me ({:expires_in=>86400 seconds})
Processing by TemplatesController#show as HTML
  Parameters: {"id"=>"41"}
  User Load (1.1ms)  SELECT  "users".* FROM "users"  WHERE "users"."id" = $1 LIMIT 1  [["id", 543]]

然而，当我尝试通过提供配置文件来运行puma时，我再也看不到完整的日志了：

$ bundle exec puma -C config/puma.rb
[56872] Puma starting in cluster mode...
[56872] * Version 2.12.3 (ruby 2.2.1-p85), codename: Plutonian Photo Shoot
[56872] * Min threads: 1, max threads: 1
[56872] * Environment: development
[56872] * Process workers: 2
[56872] * Preloading application
/Users/serj/.rvm/gems/ruby-2.2.1@email_platform/gems/htmlentities-4.3.2/lib/htmlentities/mappings/expanded.rb:465: warning: duplicated key at line 466 ignored: "inodot"
[56872] * Listening on tcp://0.0.0.0:3000
[56872] ! WARNING: Detected 1 Thread(s) started in app boot:
[56872] ! #<Rack::MiniProfiler::FileStore::CacheCleanupThread:0x007fb58ccaa730@/Users/serj/.rvm/gems/ruby-2.2.1@email_platform/gems/rack-mini-profiler-0.9.7/lib/mini_profiler/storage/file_store.rb:47 sleep> - /Users/serj/.rvm/gems/ruby-2.2.1@email_platform/gems/rack-mini-profiler-0.9.7/lib/mini_profiler/storage/file_store.rb:65:in `sleep'
[56872] Use Ctrl-C to stop
[56872] - Worker 0 (pid: 56894) booted, phase: 0
[56872] - Worker 1 (pid: 56895) booted, phase: 0
[56894] 127.0.0.1 - - [06/Aug/2015:14:12:13 -0400] "GET /templates/41 HTTP/1.1" 200 45108 3.3802
[56894] 127.0.0.1 - - [06/Aug/2015:14:12:13 -0400] "GET /bootstrap-image-gallery.css?body=1 HTTP/1.1" 304 - 0.0379
[56894] 127.0.0.1 - - [06/Aug/2015:14:12:13 -0400] "GET /jquery.ui.autocomplete.css?body=1 HTTP/1.1" 304 - 0.0427
...

有没有办法像rails s一样显示日志？我希望与rails s具有相同的行为，而无需运行其他命令。有可能吗？

我的美洲狮配置：

workers Integer(ENV['WEB_CONCURRENCY'] || 2)
threads_count = Integer(ENV['MAX_THREADS'] || 1)
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

日志位于log/<rails env>.log。所以你可以（在一个单独的选项卡/窗口中）运行：

tail -f log/development.log

你会看到你的所有输出。如果你想将rails的输出合并到puma日志中，你可以随时将rails记录到STDOUT：

config.logger = Logger.new(STDOUT)

Answer 2

我在Puma github readme：

中找到了这个命令

$rails s Puma

这也会导致所需的行为。

编辑：事实上，在安装Puma之后as described here，它应该在没有Puma参数的情况下由rails s命令自动获取。

Answer 3

如果它是您感兴趣的日志，那么您可以拖尾实际的日志文件。它会像这样tail -f log/development.log。

Answer 4

如果您使用foreman或Procfile，则可以将tail -f log添加到Procfile中。这就是我用的：

# Procfile.dev
web: bundle exec puma -p $PORT
webpack: bin/webpack-dev-server
log: tail -f log/development.log

然后我像这样启动rails：

$> PORT=3000 foreman start -f Procfile.dev

我的.zshrc中实际上有一个别名：

alias railss='PORT=3000 foreman start -f Procfile.dev'

所以我可以简单地以以下方式启动Rails：

$> railss

Answer 5

就我而言，我尝试过

config.logger = Logger.new(STDOUT)

但是我收到了一堆日志错误说：NoMethodError: undefined method 'silence' for #Logger:...

我找到的解决方案是添加到 config/environments/development.rb

logger           = ActiveSupport::Logger.new(STDOUT)
logger.formatter = config.log_formatter
config.logger    = ActiveSupport::TaggedLogging.new(logger)

信用：https://github.com/rails/sprockets-rails/issues/376#issuecomment-287560399

Puma - 使用配置文件运行服务器时显示完整日志

5 个答案: