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当我将RoR（4.2.6）应用程序部署到ElasticBeanstalk时，看起来初始化过程正在运行四次。这影响了我依赖作业调度程序对象的单例实例的方式（使用Rufus Scheduler）。Elastic Beanstalk和Rails - 多次初始化？
在一对夫妇的初始化文件，并在application.rb，我增加了一些日志语句：
这里：
# /config/initializers/scheduler.rb
require 'rufus-scheduler'
::Rufus_lockfile = "/tmp/.rufus-scheduler.lock"
::Scheduler = Rufus::Scheduler.singleton(
:lockfile => Rufus_lockfile
)
Rails.logger.info "1: started Scheduler #{Scheduler.object_id}"
在这里：
# /config/initializers/cookies_serializer.rb
Rails.logger.info "2: some other initializer"
在这里：
# /config/application.rb
require File.expand_path('../boot', __FILE__)
require 'rails/all'
Bundler.require(*Rails.groups)
module MyApp
class Application < Rails::Application
...
config.after_initialize do
Rails.logger.info "3: after app is initialized"
end
end
end
我跑eb deploy，它完成后，这是我看到的app/log/production.log顶部：
I, [2016-05-31T10:31:08.756302 #18753] INFO -- : 2: some other initializer
I, [2016-05-31T10:31:08.757252 #18753] INFO -- : 1: started Scheduler 47235057343600
I, [2016-05-31T10:31:08.896353 #18753] INFO -- : 3: after app is initialized
I, [2016-05-31T10:31:23.669517 #18817] INFO -- : 2: some other initializer
I, [2016-05-31T10:31:23.670380 #18817] INFO -- : 1: started Scheduler 46989489069800
I, [2016-05-31T10:31:23.806154 #18817] INFO -- : 3: after app is initialized
D, [2016-05-31T10:31:23.969103 #18817] DEBUG -- : ^[[1m^[[36mActiveRecord::SchemaMigration Load (1.3ms)^[[0m ^[[1mSELECT "schema_migrations".* FROM "schema_migrations"^[[0m
I, [2016-05-31T10:31:33.108449 #18897] INFO -- : 2: some other initializer
I, [2016-05-31T10:31:33.109513 #18897] INFO -- : 1: started Scheduler 47156425207060
I, [2016-05-31T10:31:33.116500 #18901] INFO -- : 2: some other initializer
I, [2016-05-31T10:31:33.117374 #18901] INFO -- : 1: started Scheduler 47156425216940
I, [2016-05-31T10:31:33.790266 #18901] INFO -- : 3: after app is initialized
I, [2016-05-31T10:31:33.844517 #18897] INFO -- : 3: after app is initialized
所以它看起来像初始化文件，甚至代码在我after_initializer块越来越运行四次...我无法弄清楚为什么。