使用Paperclip / Fog將文件保存到RackSpace CloudFiles時，連接到奇數IP地址時會發生超時

Question

我有一個使用Paperclip在RackSpace CloudFiles上存儲圖像的應用程序。 它一直運行良好，但最近不會保存文件。 發生的錯誤是：

Excon::Errors::SocketError (Connection timed out - connect(2) for 94.236.107.224:443 (Errno::ETIMEDOUT)):

在excon/socket.rb我添加了一些調試功能，以在發出請求時查看@data的內容。 這是：

{
  :chunk_size        => 1048576, 
  :ciphers           => "HIGH:!SSLv2:!aNULL:!eNULL:!3DES", 
  :connect_timeout   => 60, 
  :debug_request     => false, 
  :debug_response    => true, 
  :headers           => {"User-Agent" => "fog/1.22.0"}, 
  :idempotent        => false, 
  :instrumentor_name => "excon", 
  :middlewares       => [Excon::Middleware::ResponseParser, Excon::Middleware::Expects, Excon::Middleware::Idempotent, Excon::Middleware::Instrumentor, Excon::Middleware::Mock],
  :mock              => false,
  :nonblock          => true,
  :omit_default_port => false,
  :persistent        => false,
  :read_timeout      => 60,
  :retry_limit       => 4,
  :ssl_verify_peer   => true,
  :tcp_nodelay       => false,
  :uri_parser        => URI,
  :write_timeout     => 60,
  :host              => "lon.auth.api.rackspacecloud.com",
  :path              => "/v2.0",
  :port              => 443,
  :query             => nil,
  :scheme            => "https",
  :user              => nil,
  :password          => nil
}

主機是lon.auth.api.rackspacecloud.com ，解析為92.52.64.197 （在服務器上以及在本地）。

但是，該錯誤是因為與94.236.107.224的連接超時。 在該IP上的反向查找顯示該IP也與auth主機名相關聯：

$ host 94.236.107.224
224.107.236.94.in-addr.arpa domain name pointer lon.auth.api.rackspacecloud.com.

我認為該IP不再用於auth服務，但是我根本看不到為什么要連接它。

所以我需要知道：

1. 當錯誤IP未顯示在日志中時，為什么連接到該IP？
2. 如何解決此問題，以便使用正確的服務器？

這是發生的完整錯誤：

Completed 500 Internal Server Error in 15437.6ms

Excon::Errors::SocketError (Connection timed out - connect(2) for 94.236.107.224:443 (Errno::ETIMEDOUT)):
  excon (0.33.0) lib/excon/socket.rb:220:in `connect_nonblock'
  excon (0.33.0) lib/excon/socket.rb:220:in `rescue in block in connect'
  excon (0.33.0) lib/excon/socket.rb:189:in `block in connect'
  excon (0.33.0) lib/excon/socket.rb:185:in `each'
  excon (0.33.0) lib/excon/socket.rb:185:in `connect'
  excon (0.33.0) lib/excon/ssl_socket.rb:131:in `connect'
  excon (0.33.0) lib/excon/socket.rb:28:in `initialize'
  excon (0.33.0) lib/excon/ssl_socket.rb:9:in `initialize'
  excon (0.33.0) lib/excon/connection.rb:414:in `new'
  excon (0.33.0) lib/excon/connection.rb:414:in `socket'
  excon (0.33.0) lib/excon/connection.rb:126:in `request_call'
  excon (0.33.0) lib/excon/middlewares/mock.rb:42:in `request_call'
  excon (0.33.0) lib/excon/middlewares/instrumentor.rb:22:in `request_call'
  excon (0.33.0) lib/excon/middlewares/base.rb:15:in `request_call'
  excon (0.33.0) lib/excon/middlewares/base.rb:15:in `request_call'
  excon (0.33.0) lib/excon/middlewares/base.rb:15:in `request_call'
  excon (0.33.0) lib/excon/connection.rb:269:in `request'
  fog-core (1.22.0) lib/fog/core/connection.rb:56:in `request'
  fog (1.22.0) lib/fog/rackspace/service.rb:34:in `request_without_retry'
  fog (1.22.0) lib/fog/rackspace/requests/identity/create_token.rb:15:in `create_token'
  fog (1.22.0) lib/fog/rackspace/identity.rb:41:in `authenticate'
  fog (1.22.0) lib/fog/rackspace/identity.rb:79:in `initialize'
  fog-core (1.22.0) lib/fog/core/service.rb:115:in `new'
  fog-core (1.22.0) lib/fog/core/service.rb:115:in `new'
  fog (1.22.0) lib/fog/rackspace/service.rb:116:in `authenticate_v2'
  fog (1.22.0) lib/fog/rackspace/service.rb:30:in `authenticate'
  fog (1.22.0) lib/fog/rackspace/storage.rb:88:in `authenticate'
  fog (1.22.0) lib/fog/rackspace/storage.rb:419:in `initialize'
  fog-core (1.22.0) lib/fog/core/service.rb:115:in `new'
  fog-core (1.22.0) lib/fog/core/service.rb:115:in `new'
  fog-core (1.22.0) lib/fog/storage.rb:26:in `new'
  paperclip (3.4.2) lib/paperclip/storage/fog.rb:208:in `connection'
  paperclip (3.4.2) lib/paperclip/storage/fog.rb:218:in `directory'
  paperclip (3.4.2) lib/paperclip/storage/fog.rb:100:in `block in flush_writes'
  paperclip (3.4.2) lib/paperclip/storage/fog.rb:96:in `each'
  paperclip (3.4.2) lib/paperclip/storage/fog.rb:96:in `flush_writes'
  paperclip (3.4.2) lib/paperclip/attachment.rb:221:in `save'
  paperclip (3.4.2) lib/paperclip/instance_methods.rb:17:in `block in save_attached_files'
  paperclip (3.4.2) lib/paperclip/instance_methods.rb:10:in `block in each_attachment'
  paperclip (3.4.2) lib/paperclip/instance_methods.rb:9:in `each'
  paperclip (3.4.2) lib/paperclip/instance_methods.rb:9:in `each_attachment'
  paperclip (3.4.2) lib/paperclip/instance_methods.rb:16:in `save_attached_files'
  activesupport (3.2.17) lib/active_support/callbacks.rb:449:in `_run__806665839013247154__save__3701132647492051879__callbacks'
  activesupport (3.2.17) lib/active_support/callbacks.rb:405:in `__run_callback'
  activesupport (3.2.17) lib/active_support/callbacks.rb:385:in `_run_save_callbacks'
  activesupport (3.2.17) lib/active_support/callbacks.rb:81:in `run_callbacks'
  activerecord (3.2.17) lib/active_record/callbacks.rb:264:in `create_or_update'
  activerecord (3.2.17) lib/active_record/persistence.rb:84:in `save'
  activerecord (3.2.17) lib/active_record/validations.rb:50:in `save'
  activerecord (3.2.17) lib/active_record/attribute_methods/dirty.rb:22:in `save'
  activerecord (3.2.17) lib/active_record/transactions.rb:259:in `block (2 levels) in save'
  activerecord (3.2.17) lib/active_record/transactions.rb:313:in `block in with_transaction_returning_status'
  activerecord (3.2.17) lib/active_record/connection_adapters/abstract/database_statements.rb:192:in `transaction'
  activerecord (3.2.17) lib/active_record/transactions.rb:208:in `transaction'
  activerecord (3.2.17) lib/active_record/transactions.rb:311:in `with_transaction_returning_status'
  activerecord (3.2.17) lib/active_record/transactions.rb:259:in `block in save'
  activerecord (3.2.17) lib/active_record/transactions.rb:270:in `rollback_active_record_state!'
  activerecord (3.2.17) lib/active_record/transactions.rb:258:in `save'
  activeadmin (0.5.1) lib/active_admin/resource_controller/callbacks.rb:28:in `block in save_resource'
  activeadmin (0.5.1) lib/active_admin/callbacks.rb:78:in `run_save_callbacks'
  activeadmin (0.5.1) lib/active_admin/resource_controller/callbacks.rb:27:in `save_resource'
  activeadmin (0.5.1) lib/active_admin/resource_controller/callbacks.rb:22:in `block in create_resource'
  activeadmin (0.5.1) lib/active_admin/callbacks.rb:78:in `run_create_callbacks'
  activeadmin (0.5.1) lib/active_admin/resource_controller/callbacks.rb:21:in `create_resource'
  inherited_resources (1.4.1) lib/inherited_resources/actions.rb:33:in `create'
  activeadmin (0.5.1) lib/active_admin/resource_controller/actions.rb:48:in `create'
  actionpack (3.2.17) lib/action_controller/metal/implicit_render.rb:4:in `send_action'
  actionpack (3.2.17) lib/abstract_controller/base.rb:167:in `process_action'
  actionpack (3.2.17) lib/action_controller/metal/rendering.rb:10:in `process_action'
  actionpack (3.2.17) lib/abstract_controller/callbacks.rb:18:in `block in process_action'
  activesupport (3.2.17) lib/active_support/callbacks.rb:458:in `_run__2901337515923689909__process_action__4396305873998292606__callbacks'
  activesupport (3.2.17) lib/active_support/callbacks.rb:405:in `__run_callback'
  activesupport (3.2.17) lib/active_support/callbacks.rb:385:in `_run_process_action_callbacks'
  activesupport (3.2.17) lib/active_support/callbacks.rb:81:in `run_callbacks'
  actionpack (3.2.17) lib/abstract_controller/callbacks.rb:17:in `process_action'
  actionpack (3.2.17) lib/action_controller/metal/rescue.rb:29:in `process_action'
  actionpack (3.2.17) lib/action_controller/metal/instrumentation.rb:30:in `block in process_action'
  activesupport (3.2.17) lib/active_support/notifications.rb:123:in `block in instrument'
  activesupport (3.2.17) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
  activesupport (3.2.17) lib/active_support/notifications.rb:123:in `instrument'
  actionpack (3.2.17) lib/action_controller/metal/instrumentation.rb:29:in `process_action'
  actionpack (3.2.17) lib/action_controller/metal/params_wrapper.rb:207:in `process_action'
  activerecord (3.2.17) lib/active_record/railties/controller_runtime.rb:18:in `process_action'
  actionpack (3.2.17) lib/abstract_controller/base.rb:121:in `process'
  actionpack (3.2.17) lib/abstract_controller/rendering.rb:45:in `process'
  actionpack (3.2.17) lib/action_controller/metal.rb:203:in `dispatch'
  actionpack (3.2.17) lib/action_controller/metal/rack_delegation.rb:14:in `dispatch'
  actionpack (3.2.17) lib/action_controller/metal.rb:246:in `block in action'
  actionpack (3.2.17) lib/action_dispatch/routing/route_set.rb:73:in `call'
  actionpack (3.2.17) lib/action_dispatch/routing/route_set.rb:73:in `dispatch'
  actionpack (3.2.17) lib/action_dispatch/routing/route_set.rb:36:in `call'
  journey (1.0.4) lib/journey/router.rb:68:in `block in call'
  journey (1.0.4) lib/journey/router.rb:56:in `each'
  journey (1.0.4) lib/journey/router.rb:56:in `call'
  actionpack (3.2.17) lib/action_dispatch/routing/route_set.rb:608:in `call'
  rack-google_analytics (1.0.2) lib/rack/google_analytics.rb:5:in `call'
  warden (1.2.3) lib/warden/manager.rb:35:in `block in call'
  warden (1.2.3) lib/warden/manager.rb:34:in `catch'
  warden (1.2.3) lib/warden/manager.rb:34:in `call'
  actionpack (3.2.17) lib/action_dispatch/middleware/best_standards_support.rb:17:in `call'
  rack (1.4.5) lib/rack/etag.rb:23:in `call'
  rack (1.4.5) lib/rack/conditionalget.rb:35:in `call'
  actionpack (3.2.17) lib/action_dispatch/middleware/head.rb:14:in `call'
  actionpack (3.2.17) lib/action_dispatch/middleware/params_parser.rb:21:in `call'
  actionpack (3.2.17) lib/action_dispatch/middleware/flash.rb:242:in `call'
  rack (1.4.5) lib/rack/session/abstract/id.rb:210:in `context'
  rack (1.4.5) lib/rack/session/abstract/id.rb:205:in `call'
  actionpack (3.2.17) lib/action_dispatch/middleware/cookies.rb:341:in `call'
  activerecord (3.2.17) lib/active_record/query_cache.rb:64:in `call'
  activerecord (3.2.17) lib/active_record/connection_adapters/abstract/connection_pool.rb:479:in `call'
  actionpack (3.2.17) lib/action_dispatch/middleware/callbacks.rb:28:in `block in call'
  activesupport (3.2.17) lib/active_support/callbacks.rb:405:in `_run__1208023080139519486__call__3701132647492051879__callbacks'
  activesupport (3.2.17) lib/active_support/callbacks.rb:405:in `__run_callback'
  activesupport (3.2.17) lib/active_support/callbacks.rb:385:in `_run_call_callbacks'
  activesupport (3.2.17) lib/active_support/callbacks.rb:81:in `run_callbacks'
  actionpack (3.2.17) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
  actionpack (3.2.17) lib/action_dispatch/middleware/remote_ip.rb:31:in `call'
  actionpack (3.2.17) lib/action_dispatch/middleware/debug_exceptions.rb:16:in `call'
  actionpack (3.2.17) lib/action_dispatch/middleware/show_exceptions.rb:56:in `call'
  railties (3.2.17) lib/rails/rack/logger.rb:32:in `call_app'
  railties (3.2.17) lib/rails/rack/logger.rb:16:in `block in call'
  activesupport (3.2.17) lib/active_support/tagged_logging.rb:22:in `tagged'
  railties (3.2.17) lib/rails/rack/logger.rb:16:in `call'
  actionpack (3.2.17) lib/action_dispatch/middleware/request_id.rb:22:in `call'
  rack (1.4.5) lib/rack/methodoverride.rb:21:in `call'
  rack (1.4.5) lib/rack/runtime.rb:17:in `call'
  activesupport (3.2.17) lib/active_support/cache/strategy/local_cache.rb:72:in `call'
  rack (1.4.5) lib/rack/lock.rb:15:in `call'
  rack-cache (1.2) lib/rack/cache/context.rb:136:in `forward'
  rack-cache (1.2) lib/rack/cache/context.rb:143:in `pass'
  rack-cache (1.2) lib/rack/cache/context.rb:155:in `invalidate'
  rack-cache (1.2) lib/rack/cache/context.rb:71:in `call!'
  rack-cache (1.2) lib/rack/cache/context.rb:51:in `call'
  railties (3.2.17) lib/rails/engine.rb:484:in `call'
  railties (3.2.17) lib/rails/application.rb:231:in `call'
  railties (3.2.17) lib/rails/railtie/configurable.rb:30:in `method_missing'
  /opt/chef/embedded/lib/ruby/gems/1.9.1/gems/passenger-4.0.35/lib/phusion_passenger/rack/thread_handler_extension.rb:77:in `process_request'
  /opt/chef/embedded/lib/ruby/gems/1.9.1/gems/passenger-4.0.35/lib/phusion_passenger/request_handler/thread_handler.rb:142:in `accept_and_process_next_request'
  /opt/chef/embedded/lib/ruby/gems/1.9.1/gems/passenger-4.0.35/lib/phusion_passenger/request_handler/thread_handler.rb:110:in `main_loop'
  /opt/chef/embedded/lib/ruby/gems/1.9.1/gems/passenger-4.0.35/lib/phusion_passenger/request_handler.rb:441:in `block (3 levels) in start_threads'

Answer 1

我能夠針對lon.auth.api.rackspacecloud.com成功進行身份驗證。 我的猜測是DNS配置可能有問題。 讓我跟蹤某人來為您調查此問題。

凱爾

Answer 2

感謝@ geemus，@ Kyle-Rames和@AshWilson提供了有關此難題的線索。

RS支持人員告訴我將身份驗證服務器更改為lon.identity.api.rackspacecloud.com ，但是我看到了以下錯誤：

Unknown region :dfw for service cloudFiles. Please use one of the following regions: :lon

與設定區域rackspace_region: :lon在paperclip_defaults.rb排序時，和得到的東西再工作。

Answer 3

我不確定會導致這種情況的Rackspace方面的細節。 在激子中，ip的解析發生在Excon::Socket#connect 。 不知道您對這些事情的本質有多少了解，但想想我至少會指出您的方向，以防可能有所幫助： https : //github.com/geemus/excon/blob/master/lib/ EXCON / socket.rb＃L167

至少目前至少還停留在套接字級別（我們只在套接字連接中查找過一次，並且不將其傳播到數據哈希中）。 不過，您不必覆蓋它（至少以我的經驗，默認行為是正確的選擇）。 我可能會建議此時針對霧將問題提交到github（ https://github.com/fog/fog/issues/new ），以便我可以向Rackspace的人員指出。