Puma - 在使用配置文件运行服务器时显示完整日志

20

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


I installed puma gem and when I start rails server by rails s I can see full output:
$ 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,当我通过提供配置文件运行Puma时,无法再看到完整的日志:

$ 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?我想要与rails s相同的行为但不需要运行额外的命令。这可能吗?

我的Puma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
6个回答

42

日志文件在log/<rails env>.log中。因此,您可以(在单独的选项卡/窗口中)运行:

tail -f log/development.log

您将看到所有输出。如果您希望从 Rails 输出合并到 Puma 日志中,您可以让Rails记录到STDOUT

config.logger = Logger.new(STDOUT)

5

我在Puma Github的说明文档中找到了这个命令:

$rails s Puma

这也会导致所需的行为。

编辑: 实际上,如此描述,在安装Puma后,应该自动通过rails s命令选择它,无需使用Puma参数。


3
如果你对日志感兴趣,那么你可以追踪实际的日志文件。命令示例:tail -f log/development.log

3

如果您使用foreman或者Procfile,可以将tail -f log添加到您的Procfile中。以下是我的设置:

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

我会这样启动 Rails:

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

我在我的.zshrc文件中为此设置了一个别名:

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

那么我可以简单地启动Rails:

$> railss

谢谢!只用foreman start就很好用了。 - Daniel Duque

0

就我的情况而言,我尝试过

config.logger = Logger.new(STDOUT)

但是我遇到了一堆日志错误,显示:NoMethodError: undefined method 'silence' for #Logger:...

我找到的解决方案是在config/environments/development.rb中添加以下内容:

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

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


0
可能是由于您Puma配置文件中的以下行导致的:
workers Integer(ENV['WEB_CONCURRENCY'] || 2)

尝试删除这行或将工作人员设置为0。
这样,Puma将以单一模式运行,并开始打印所有日志。

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