Question

所以我刚刚将Rails 4应用程序部署到运行Nginx + Unicorn的AWS EC2实例。我认为Unicorn结束时一切运行正常，因为请求正在点击Rails应用程序，但我得到了这个奇怪的500错误，并且不能告诉它来自哪里。

以下是我从staging.log获得的内容。我不知道发生了什么，任何帮助都会很棒。

I, [2014-05-25T05:11:29.460247 #21589]  INFO -- : Started GET "/" for <ip> at 2014-05-25 05:11:29 +0000
I, [2014-05-25T05:11:29.483476 #21589]  INFO -- : Processing by PlaybookController#index as HTML
I, [2014-05-25T05:11:29.486810 #21589]  INFO -- : Completed 500 Internal Server Error in 3ms
F, [2014-05-25T05:11:29.491919 #21589] FATAL -- :
TypeError (no implicit conversion of Array into String):
  activesupport (4.1.1) lib/active_support/key_generator.rb:21:in `pbkdf2_hmac_sha1'
  activesupport (4.1.1) lib/active_support/key_generator.rb:21:in `generate_key'
  activesupport (4.1.1) lib/active_support/key_generator.rb:38:in `generate_key'
  actionpack (4.1.1) lib/action_dispatch/middleware/cookies.rb:509:in `initialize'
  actionpack (4.1.1) lib/action_dispatch/middleware/cookies.rb:160:in `new'
  actionpack (4.1.1) lib/action_dispatch/middleware/cookies.rb:160:in `encrypted'
  actionpack (4.1.1) lib/action_dispatch/middleware/cookies.rb:169:in `signed_or_encrypted'
  actionpack (4.1.1) lib/action_dispatch/middleware/session/cookie_store.rb:119:in `cookie_jar'
  actionpack (4.1.1) lib/action_dispatch/middleware/session/cookie_store.rb:114:in `get_cookie'
  actionpack (4.1.1) lib/action_dispatch/middleware/session/cookie_store.rb:90:in `block in unpacked_cookie_data'
  actionpack (4.1.1) lib/action_dispatch/middleware/session/abstract_store.rb:51:in `stale_session_check!'
  actionpack (4.1.1) lib/action_dispatch/middleware/session/cookie_store.rb:89:in `unpacked_cookie_data'
  actionpack (4.1.1) lib/action_dispatch/middleware/session/cookie_store.rb:83:in `block in extract_session_id'
  actionpack (4.1.1) lib/action_dispatch/middleware/session/abstract_store.rb:51:in `stale_session_check!'
  actionpack (4.1.1) lib/action_dispatch/middleware/session/cookie_store.rb:82:in `extract_session_id'
  actionpack (4.1.1) lib/action_dispatch/request/session.rb:49:in `block in []'
  actionpack (4.1.1) lib/action_dispatch/request/session.rb:48:in `fetch'
  actionpack (4.1.1) lib/action_dispatch/request/session.rb:48:in `[]'
  actionpack (4.1.1) lib/action_dispatch/request/session.rb:70:in `id'
  rack (1.5.2) lib/rack/session/abstract/id.rb:282:in `current_session_id'
  rack (1.5.2) lib/rack/session/abstract/id.rb:288:in `session_exists?'
  actionpack (4.1.1) lib/action_dispatch/request/session.rb:152:in `exists?'
  actionpack (4.1.1) lib/action_dispatch/request/session.rb:172:in `load_for_read!'
  actionpack (4.1.1) lib/action_dispatch/request/session.rb:89:in `[]'
  turbolinks (2.2.2) lib/turbolinks/xhr_headers.rb:35:in `set_xhr_redirected_to'
  activesupport (4.1.1) lib/active_support/callbacks.rb:424:in `block in make_lambda'
  activesupport (4.1.1) lib/active_support/callbacks.rb:160:in `call'
  activesupport (4.1.1) lib/active_support/callbacks.rb:160:in `block in halting'
  activesupport (4.1.1) lib/active_support/callbacks.rb:166:in `call'
  activesupport (4.1.1) lib/active_support/callbacks.rb:166:in `block in halting'
  activesupport (4.1.1) lib/active_support/callbacks.rb:86:in `call'
  activesupport (4.1.1) lib/active_support/callbacks.rb:86:in `run_callbacks'
  actionpack (4.1.1) lib/abstract_controller/callbacks.rb:19:in `process_action'
  actionpack (4.1.1) lib/action_controller/metal/rescue.rb:29:in `process_action'
  actionpack (4.1.1) lib/action_controller/metal/instrumentation.rb:31:in `block in process_action'
  activesupport (4.1.1) lib/active_support/notifications.rb:159:in `block in instrument'
  activesupport (4.1.1) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
  activesupport (4.1.1) lib/active_support/notifications.rb:159:in `instrument'
  actionpack (4.1.1) lib/action_controller/metal/instrumentation.rb:30:in `process_action'
  actionpack (4.1.1) lib/action_controller/metal/params_wrapper.rb:250:in `process_action'
  activerecord (4.1.1) lib/active_record/railties/controller_runtime.rb:18:in `process_action'
 actionpack (4.1.1) lib/abstract_controller/base.rb:136:in `process'
 actionview (4.1.1) lib/action_view/rendering.rb:30:in `process'
 actionpack (4.1.1) lib/action_controller/metal.rb:195:in `dispatch'
 actionpack (4.1.1) lib/action_controller/metal/rack_delegation.rb:13:in `dispatch'
 actionpack (4.1.1) lib/action_controller/metal.rb:231:in `block in action'
 actionpack (4.1.1) lib/action_dispatch/routing/route_set.rb:80:in `call'
 actionpack (4.1.1) lib/action_dispatch/routing/route_set.rb:80:in `dispatch'
 actionpack (4.1.1) lib/action_dispatch/routing/route_set.rb:48:in `call' "../../log/staging.log" [readonly] 960L, 73078C                                                                                                                                                                              
 activesupport (4.1.1) lib/active_support/notifications.rb:159:in `instrument'
 actionpack (4.1.1) lib/action_controller/metal/instrumentation.rb:30:in `process_action'
 actionpack (4.1.1) lib/action_controller/metal/params_wrapper.rb:250:in `process_action'
 activerecord (4.1.1) lib/active_record/railties/controller_runtime.rb:18:in `process_action'
 actionpack (4.1.1) lib/abstract_controller/base.rb:136:in `process'
 actionview (4.1.1) lib/action_view/rendering.rb:30:in `process'
 actionpack (4.1.1) lib/action_controller/metal.rb:195:in `dispatch'
 actionpack (4.1.1) lib/action_controller/metal/rack_delegation.rb:13:in `dispatch'
 actionpack (4.1.1) lib/action_controller/metal.rb:231:in `block in action'
 actionpack (4.1.1) lib/action_dispatch/routing/route_set.rb:80:in `call'
 actionpack (4.1.1) lib/action_dispatch/routing/route_set.rb:80:in `dispatch'
 actionpack (4.1.1) lib/action_dispatch/routing/route_set.rb:48:in `call'
 actionpack (4.1.1) lib/action_dispatch/journey/router.rb:71:in `block in call'
 actionpack (4.1.1) lib/action_dispatch/journey/router.rb:59:in `each'
 actionpack (4.1.1) lib/action_dispatch/journey/router.rb:59:in `call'
 actionpack (4.1.1) lib/action_dispatch/routing/route_set.rb:676:in `call'
 rack (1.5.2) lib/rack/etag.rb:23:in `call'
 rack (1.5.2) lib/rack/conditionalget.rb:25:in `call'
 rack (1.5.2) lib/rack/head.rb:11:in `call'
 actionpack (4.1.1) lib/action_dispatch/middleware/params_parser.rb:27:in `call'
 actionpack (4.1.1) lib/action_dispatch/middleware/flash.rb:254:in `call'
 rack (1.5.2) lib/rack/session/abstract/id.rb:225:in `context'
 rack (1.5.2) lib/rack/session/abstract/id.rb:220:in `call'
 actionpack (4.1.1) lib/action_dispatch/middleware/cookies.rb:560:in `call'
 activerecord (4.1.1) lib/active_record/query_cache.rb:36:in `call'
 activerecord (4.1.1) lib/active_record/connection_adapters/abstract/connection_pool.rb:621:in `call'
 actionpack (4.1.1) lib/action_dispatch/middleware/callbacks.rb:29:in `block in call'
 activesupport (4.1.1) lib/active_support/callbacks.rb:82:in `run_callbacks'
 actionpack (4.1.1) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
 actionpack (4.1.1) lib/action_dispatch/middleware/remote_ip.rb:76:in `call'
 actionpack (4.1.1) lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call'
 actionpack (4.1.1) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
 railties (4.1.1) lib/rails/rack/logger.rb:38:in `call_app'
 railties (4.1.1) lib/rails/rack/logger.rb:20:in `block in call'
 activesupport (4.1.1) lib/active_support/tagged_logging.rb:68:in `block in tagged'
 activesupport (4.1.1) lib/active_support/tagged_logging.rb:26:in `tagged'
 activesupport (4.1.1) lib/active_support/tagged_logging.rb:68:in `tagged'
 railties (4.1.1) lib/rails/rack/logger.rb:20:in `call'
 actionpack (4.1.1) lib/action_dispatch/middleware/request_id.rb:21:in `call'
 rack (1.5.2) lib/rack/methodoverride.rb:21:in `call'
 rack (1.5.2) lib/rack/runtime.rb:17:in `call'
 activesupport (4.1.1) lib/active_support/cache/strategy/local_cache_middleware.rb:26:in `call'
 rack (1.5.2) lib/rack/sendfile.rb:112:in `call'
 railties (4.1.1) lib/rails/engine.rb:514:in `call'
 railties (4.1.1) lib/rails/application.rb:144:in `call'
 unicorn (4.8.3) lib/unicorn/http_server.rb:576:in `process_client'
 unicorn (4.8.3) lib/unicorn/http_server.rb:670:in `worker_loop'
 unicorn (4.8.3) lib/unicorn/http_server.rb:525:in `spawn_missing_workers'
 unicorn (4.8.3) lib/unicorn/http_server.rb:140:in `start'
 unicorn (4.8.3) bin/unicorn_rails:209:in `<top (required)>'
 /var/www/playbook/current/bin/unicorn_rails:16:in `load'
 /var/www/playbook/current/bin/unicorn_rails:16:in `<main>'

Answer 1

我不是Ruby专家。但是在错误日志中这样的回溯转储也让我疯狂。关键是看看前几行：

I, [2014-05-25T05:11:29.460247 #21589]  INFO -- : Started GET "/" for <ip> at 2014-05-25 05:11:29 +0000
I, [2014-05-25T05:11:29.483476 #21589]  INFO -- : Processing by PlaybookController#index as HTML
I, [2014-05-25T05:11:29.486810 #21589]  INFO -- : Completed 500 Internal Server Error in 3ms
F, [2014-05-25T05:11:29.491919 #21589] FATAL -- :
TypeError (no implicit conversion of Array into String):

500错误表示存在内部服务器错误。这意味着您的代码中存在一些错误 - 无论是PHP，Perl还是Ruby--这只是完全杀死服务器。我在这里看到的关键是：

TypeError (no implicit conversion of Array into String):

在Ruby代码中的某处，您尝试将数组指定为字符串。这就是杀死整个过程的原因。哪里？不确定看日志。但这是整个事情失败的关键。转储的其余部分基本上是所有已加载项目的报告 - libraries＆amp;这样 - 支持你的申请。

Answer 2

我在同一个地方遇到了类似的错误：TypeError (no implicit conversion of Fixnum into String)。这是因为我在config / secrets.yml中设置了一个纯数字的secret_key_base。也许您的yaml中的属性被解释为数组？

格式应为：

staging:
  secret_key_base: 61a6fa38260a0fdfecac5c088aadd91e87

当然，不要只是复制/粘贴上面的内容，因为每个人都知道你的秘密，这是不安全的。

在暂存中启动Rails应用程序时出错 - Unicorn

2 个答案: