What steps will reproduce the problem? - I can't reproduce this on my development system (which has pretty equal software installed)

• Failure is raised on a production server, that was upgraded to Rails 2.3.18 recently. System ran fine over months with passenger 3.0.?? & Rails 2.3.17.

What is the expected output? What do you see instead? Login to that app - instead I get a passenger error page. Fail-/Logreport is pasted to bottom of this text!

What version of Phusion Passenger are you using? Which version of Rails? On what operating system? - Passenger 4.0.5 - Rails 2.3.18 - Nginx 1.4.1 (as provided by installer) - Ubuntu 12.04

Please provide any additional information below.

[ 2013-06-27 10:26:35.6230 4549/7f601eff2740 agents/Base.cpp:1575 ]: Random seed: 1372321595 [ 2013-06-27 10:26:35.6230 4549/7f601eff2740 agents/Watchdog/Main.cpp:543 ]: Starting Watchdog... [ 2013-06-27 10:26:35.6231 4549/7f601eff2740 agents/Watchdog/Main.cpp:440 ]: Options: { 'analytics_log_user' => 'nobody', 'default_group' => 'nogroup', 'default_python' => 'python', 'default_ruby' => '/usr/bin/ruby1.8', 'default_user' => 'nobody', 'log_level' => '1', 'max_instances_per_app' => '0', 'max_pool_size' => '6', 'passenger_root' => '/usr/lib/ruby/gems/1.8/gems/passenger-4.0.5', 'pool_idle_time' => '300', 'temp_dir' => '/tmp', 'union_station_gateway_address' => 'gateway.unionstationapp.com', 'user_switching' => 'true', 'web_server_pid' => '4547', 'web_server_type' => 'nginx', 'web_server_worker_gid' => '1000', 'web_server_worker_uid' => '1000' } [ 2013-06-27 10:26:35.6254 4553/7f053ec35740 agents/Base.cpp:1575 ]: Random seed: 1372321595 [ 2013-06-27 10:26:35.6269 4553/7f053ec35740 agents/HelperAgent/Main.cpp:555 ]: PassengerHelperAgent online, listening at unix:/tmp/passenger.1.0.4547/generation-0/request [ 2013-06-27 10:26:35.6315 4561/7f6875627740 agents/Base.cpp:1575 ]: Random seed: 1372321595 [ 2013-06-27 10:26:35.6336 4561/7f6875627740 agents/LoggingAgent/Main.cpp:271 ]: PassengerLoggingAgent online, listening at unix:/tmp/passenger.1.0.4547/generation-0/logging [ 2013-06-27 10:26:35.6337 4549/7f601eff2740 agents/Watchdog/Main.cpp:564 ]: All Phusion Passenger agents started! [ 2013-06-27 10:26:37.3731 4553/7f0527fff700 agents/HelperAgent/RequestHandler.h:1297 ]: [Client 20] New client accepted; new client count = 1 [ 2013-06-27 10:26:37.3732 4553/7f0527fff700 Pool2/Pool.h:940 ]: Spawning new SuperGroup [ 2013-06-27 10:26:37.3734 4553/7f0527fff700 Pool2/Pool.h:944 ]: asyncGet() finished [ 2013-06-27 10:26:37.3734 4553/7f053ebe1700 Pool2/Pool.h:562 ]: Garbage collection time... [ 2013-06-27 10:26:37.3735 4553/7f053ebe1700 Pool2/Pool.h:634 ]: Garbage collection done; next garbage collect in 300.000 sec [ 2013-06-27 10:26:37.3736 4553/7f053eb7f700 Pool2/Group.h:1002 ]: Requested spawning of new process for group /opt/openmetrics/mongrel_cluster/webapps/openmetrics#default [ 2013-06-27 10:26:37.3737 4553/7f053eb7f700 Pool2/Group.h:726 ]: No session checked out yet: group is spawning or restarting [ 2013-06-27 10:26:37.3738 4553/7f053eb3e700 Pool2/SmartSpawner.h:734 ]: Spawning new process: appRoot=/opt/openmetrics/mongrel_cluster/webapps/openmetrics [ 2013-06-27 10:26:37.3738 4553/7f053eb3e700 Pool2/SmartSpawner.h:210 ]: Spawning new preloader: appRoot=/opt/openmetrics/mongrel_cluster/webapps/openmetrics [ 2013-06-27 10:26:37.3741 4553/7f053eb3e700 Pool2/SmartSpawner.h:256 ]: Preloader process forked for appRoot=/opt/openmetrics/mongrel_cluster/webapps/openmetrics: PID 5393 [ 2013-06-27 10:26:37.3795 4553/7f053eb3e700 Pool2/Spawner.h:739 ]: [App 5393 stdout] [ 2013-06-27 10:26:37.3817 4553/7f053eb3e700 Pool2/Spawner.h:731 ]: [App 5393 stdout] !> I have control 1.0 [ 2013-06-27 10:26:37.3818 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 5393 stdin >>] You have control 1.0 [ 2013-06-27 10:26:37.3818 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 5393 stdin >>] passenger_root: /usr/lib/ruby/gems/1.8/gems/passenger-4.0.5 [ 2013-06-27 10:26:37.3818 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 5393 stdin >>] ruby_libdir: /usr/lib/ruby/gems/1.8/gems/passenger-4.0.5/lib [ 2013-06-27 10:26:37.3818 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 5393 stdin >>] passenger_version: 4.0.5 [ 2013-06-27 10:26:37.3818 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 5393 stdin >>] generation_dir: /tmp/passenger.1.0.4547/generation-0 [ 2013-06-27 10:26:37.3818 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 5393 stdin >>] app_root: /opt/openmetrics/mongrel_cluster/webapps/openmetrics [ 2013-06-27 10:26:37.3818 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 5393 stdin >>] app_group_name: /opt/openmetrics/mongrel_cluster/webapps/openmetrics [ 2013-06-27 10:26:37.3818 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 5393 stdin >>] app_type: classic-rails [ 2013-06-27 10:26:37.3818 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 5393 stdin >>] start_command: /usr/bin/ruby1.8
/usr/lib/ruby/gems/1.8/gems/passenger-4.0.5/helper-scripts/classic-rails-loader.rb [ 2013-06-27 10:26:37.3818 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 5393 stdin >>] process_title: Passenger ClassicRailsApp [ 2013-06-27 10:26:37.3818 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 5393 stdin >>] log_level: 1 [ 2013-06-27 10:26:37.3818 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 5393 stdin >>] start_timeout: 90000 [ 2013-06-27 10:26:37.3818 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 5393 stdin >>] environment: production [ 2013-06-27 10:26:37.3818 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 5393 stdin >>] base_uri: / [ 2013-06-27 10:26:37.3818 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 5393 stdin >>] spawn_method: smart [ 2013-06-27 10:26:37.3818 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 5393 stdin >>] default_user: nobody [ 2013-06-27 10:26:37.3818 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 5393 stdin >>] default_group: nogroup [ 2013-06-27 10:26:37.3818 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 5393 stdin >>] ruby: /usr/bin/ruby1.8 [ 2013-06-27 10:26:37.3818 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 5393 stdin >>] python: python [ 2013-06-27 10:26:37.3818 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 5393 stdin >>] logging_agent_address: unix:/tmp/passenger.1.0.4547/generation-0/logging [ 2013-06-27 10:26:37.3818 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 5393 stdin >>] logging_agent_username: logging [ 2013-06-27 10:26:37.3818 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 5393 stdin >>] logging_agent_password: KJ0rIdINRTN5WDJtVCojfo7OjPc2rz3eUxHlnOqjTA8LbW9ohmYzVBaHq5Hs6p1F [ 2013-06-27 10:26:37.3819 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 5393 stdin >>] debugger: false [ 2013-06-27 10:26:37.3819 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 5393 stdin >>] analytics: false [ 2013-06-27 10:26:37.3819 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 5393 stdin >>] [ 2013-06-27 10:26:39.6749 4553/7f053eb3e700 Pool2/Spawner.h:731 ]: [App 5393 stdout] !> Ready [ 2013-06-27 10:26:39.6749 4553/7f053eb3e700 Pool2/Spawner.h:731 ]: [App 5393 stdout] !> socket: unix:/tmp/passenger.1.0.4547/generation-0/backends/preloader.5393 [ 2013-06-27 10:26:39.6749 4553/7f053eb3e700 Pool2/Spawner.h:731 ]: [App 5393 stdout] !> [ 2013-06-27 10:26:39.6749 4553/7f053eafd700 Pool2/Spawner.h:159 ]: [App 5393 stderr] /usr/lib/ruby/gems/1.8/gems/passenger-4.0.5/lib/phusion_passenger/preloader_shared_helpers.rb:109:in select' [ 2013-06-27 10:26:39.6750 4553/7f053eafd700 Pool2/Spawner.h:159 ]: [App 5393 stderr] : wrong number of arguments (1 for 3) (ArgumentError) [ 2013-06-27 10:26:39.6750 4553/7f053eafd700 Pool2/Spawner.h:159 ]: [App 5393 stderr] from /usr/lib/ruby/gems/1.8/gems/passenger-4.0.5/lib/phusion_passenger/preloader_shared_helpers.rb:109:inrun_main_loop' [ 2013-06-27 10:26:39.6750 4553/7f053eafd700 Pool2/Spawner.h:159 ]: [App 5393 stderr] from /usr/lib/ruby/gems/1.8/gems/passenger-4.0.5/helper-scripts/classic-rails-preloader.rb:157 [ 2013-06-27 10:26:39.6754 4553/7f053eb3e700 Pool2/SmartSpawner.h:301 ]: Preloader for /opt/openmetrics/mongrel_cluster/webapps/openmetrics started on PID 5393, listening on unix:/tmp/passenger.1.0.4547/generation-0/backends/preloader.5393 [ 2013-06-27 10:26:39.6788 4553/7f053eb3e700 Pool2/SmartSpawner.h:681 ]: An error occurred while spawning a process: An error occurred while starting the application. Unable to connect to the preloader's socket: Cannot connect to Unix socket '/tmp/passenger.1.0.4547/generation-0/backends/preloader.5393': No such file or directory (errno=2) [ 2013-06-27 10:26:39.6788 4553/7f053eb3e700 Pool2/SmartSpawner.h:682 ]: The application preloader seems to have crashed, restarting it and trying again... [ 2013-06-27 10:26:39.6987 4553/7f053eb3e700 Pool2/SmartSpawner.h:210 ]: Spawning new preloader: appRoot=/opt/openmetrics/mongrel_cluster/webapps/openmetrics [ 2013-06-27 10:26:39.6992 4553/7f053eb3e700 Pool2/SmartSpawner.h:256 ]: Preloader process forked for appRoot=/opt/openmetrics/mongrel_cluster/webapps/openmetrics: PID 6310 [ 2013-06-27 10:26:39.7067 4553/7f053eb3e700 Pool2/Spawner.h:739 ]: [App 6310 stdout] [ 2013-06-27 10:26:39.7100 4553/7f053eb3e700 Pool2/Spawner.h:731 ]: [App 6310 stdout] !> I have control 1.0 [ 2013-06-27 10:26:39.7101 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 6310 stdin >>] You have control 1.0 [ 2013-06-27 10:26:39.7101 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 6310 stdin >>] passenger_root: /usr/lib/ruby/gems/1.8/gems/passenger-4.0.5 [ 2013-06-27 10:26:39.7101 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 6310 stdin >>] ruby_libdir: /usr/lib/ruby/gems/1.8/gems/passenger-4.0.5/lib [ 2013-06-27 10:26:39.7102 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 6310 stdin >>] passenger_version: 4.0.5 [ 2013-06-27 10:26:39.7102 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 6310 stdin >>] generation_dir: /tmp/passenger.1.0.4547/generation-0 [ 2013-06-27 10:26:39.7102 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 6310 stdin >>] app_root: /opt/openmetrics/mongrel_cluster/webapps/openmetrics [ 2013-06-27 10:26:39.7102 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 6310 stdin >>] app_group_name: /opt/openmetrics/mongrel_cluster/webapps/openmetrics [ 2013-06-27 10:26:39.7102 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 6310 stdin >>] app_type: classic-rails [ 2013-06-27 10:26:39.7102 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 6310 stdin >>] start_command: /usr/bin/ruby1.8
/usr/lib/ruby/gems/1.8/gems/passenger-4.0.5/helper-scripts/classic-rails-loader.rb [ 2013-06-27 10:26:39.7102 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 6310 stdin >>] process_title: Passenger ClassicRailsApp [ 2013-06-27 10:26:39.7102 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 6310 stdin >>] log_level: 1 [ 2013-06-27 10:26:39.7102 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 6310 stdin >>] start_timeout: 90000 [ 2013-06-27 10:26:39.7102 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 6310 stdin >>] environment: production [ 2013-06-27 10:26:39.7102 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 6310 stdin >>] base_uri: / [ 2013-06-27 10:26:39.7102 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 6310 stdin >>] spawn_method: smart [ 2013-06-27 10:26:39.7102 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 6310 stdin >>] default_user: nobody [ 2013-06-27 10:26:39.7102 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 6310 stdin >>] default_group: nogroup [ 2013-06-27 10:26:39.7102 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 6310 stdin >>] ruby: /usr/bin/ruby1.8 [ 2013-06-27 10:26:39.7103 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 6310 stdin >>] python: python [ 2013-06-27 10:26:39.7103 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 6310 stdin >>] logging_agent_address: unix:/tmp/passenger.1.0.4547/generation-0/logging [ 2013-06-27 10:26:39.7103 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 6310 stdin >>] logging_agent_username: logging [ 2013-06-27 10:26:39.7103 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 6310 stdin >>] logging_agent_password: KJ0rIdINRTN5WDJtVCojfo7OjPc2rz3eUxHlnOqjTA8LbW9ohmYzVBaHq5Hs6p1F [ 2013-06-27 10:26:39.7103 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 6310 stdin >>] debugger: false [ 2013-06-27 10:26:39.7103 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 6310 stdin >>] analytics: false [ 2013-06-27 10:26:39.7103 4553/7f053eb3e700 Pool2/SmartSpawner.h:356 ]: [App 6310 stdin >>] [ 2013-06-27 10:26:41.9924 4553/7f053eb3e700 Pool2/Spawner.h:731 ]: [App 6310 stdout] !> Ready [ 2013-06-27 10:26:41.9924 4553/7f053eb3e700 Pool2/Spawner.h:731 ]: [App 6310 stdout] !> socket: unix:/tmp/passenger.1.0.4547/generation-0/backends/preloader.6310 [ 2013-06-27 10:26:41.9925 4553/7f053eb3e700 Pool2/Spawner.h:731 ]: [App 6310 stdout] !> [ 2013-06-27 10:26:41.9928 4553/7f053eb3e700 Pool2/SmartSpawner.h:301 ]: Preloader for /opt/openmetrics/mongrel_cluster/webapps/openmetrics started on PID 6310, listening on unix:/tmp/passenger.1.0.4547/generation-0/backends/preloader.6310 [ 2013-06-27 10:26:41.0006 4553/7f053eaec700 Pool2/Implementation.cpp:1174 ]: [App 6310 stderr] /usr/lib/ruby/gems/1.8/gems/passenger-4.0.5/lib/phusion_passenger/preloader_shared_helpers.rb:109:in select': wrong number of arguments (1 for 3) (ArgumentError) [ 2013-06-27 10:26:41.0007 4553/7f053eaec700 Pool2/Implementation.cpp:1174 ]: [App 6310 stderr] from /usr/lib/ruby/gems/1.8/gems/passenger-4.0.5/lib/phusion_passenger/preloader_shared_helpers.rb:109:inrun_main_loop' [ 2013-06-27 10:26:41.0007 4553/7f053eaec700 Pool2/Implementation.cpp:1174 ]: [App 6310 stderr] from /usr/lib/ruby/gems/1.8/gems/passenger-4.0.5/helper-scripts/classic-rails-preloader.rb:157 [ 2013-06-27 10:26:42.0208 4553/7f053eb3e700 Pool2/Implementation.cpp:774 ]: Could not spawn process for group /opt/openmetrics/mongrel_cluster/webapps/openmetrics#default: An error occurred while starting the application. Unable to connect to the preloader's socket: Cannot connect to Unix socket '/tmp/passenger.1.0.4547/generation-0/backends/preloader.6310': No such file or directory (errno=2) in 'void Passenger::ApplicationPool2::SmartSpawner::throwPreloaderSpawnException(const string&, Passenger::SpawnException::ErrorKind, Passenger::ApplicationPool2::Spawner::BackgroundIOCapturerPtr&, const DebugDirPtr&)' (SmartSpawner.h:150) in 'Passenger::ApplicationPool2::SmartSpawner::SpawnResult Passenger::ApplicationPool2::SmartSpawner::sendSpawnCommand(const Passenger::ApplicationPool2::Options&)' (SmartSpawner.h:596) in 'Passenger::ApplicationPool2::SmartSpawner::SpawnResult Passenger::ApplicationPool2::SmartSpawner::sendSpawnCommandAgain(const Exception&, const Passenger::ApplicationPool2::Options&) [with Exception = Passenger::SpawnException]' (SmartSpawner.h:680) in 'virtual Passenger::ApplicationPool2::ProcessPtr Passenger::ApplicationPool2::SmartSpawner::spawn(const Passenger::ApplicationPool2::Options&)' (SmartSpawner.h:748) in 'void Passenger::ApplicationPool2::Group::spawnThreadRealMain(const SpawnerPtr&, const Passenger::ApplicationPool2::Options&, unsigned int)' (Implementation.cpp:707)

[ 2013-06-27 10:26:42.0209 4553/7f053eb3e700 Pool2/Group.h:445 ]: Enabling all DISABLING processes with result DR_ERROR [ 2013-06-27 10:26:42.0209 4553/7f053eb3e700 Pool2/Implementation.cpp:793 ]: Spawn loop done [ 2013-06-27 10:26:42.0211 4553/7f0527fff700 agents/HelperAgent/RequestHandler.h:1885 ]: [Client 20] Cannot checkout session. An error occurred while starting the application. Unable to connect to the preloader's socket: Cannot connect to Unix socket '/tmp/passenger.1.0.4547/generation-0/backends/preloader.6310': No such file or directory (errno=2) [ 2013-06-27 10:26:42.0213 4553/7f0527fff700 agents/HelperAgent/RequestHandler.h:573 ]: [Client 20] Disconnected; new client count = 0

... nevermind. I included ActionView::Helpers in one of my models. That caused this issue.

Ah yeah, by doing that you overwrote the select() function in the global namespace.