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Bug 754955

Summary: #<AbstractController::DoubleRenderError: while registering a system from UI
Product: Red Hat Satellite Reporter: Sachin Ghai <sghai>
Component: WebUIAssignee: Tom McKay <tomckay>
Status: CLOSED CURRENTRELEASE QA Contact: Katello QA List <katello-qa-list>
Severity: high Docs Contact:
Priority: high    
Version: 6.0.0CC: mmccune, tomckay
Target Milestone: UnspecifiedKeywords: Triaged
Target Release: Unused   
Hardware: Unspecified   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2012-08-22 18:07:43 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 747354, 755097    

Description Sachin Ghai 2011-11-18 11:31:49 UTC
Description of problem:
I was trying to register a system from UI. I entered the system name, arch and system type "Virtual" and clicked on save button.

On clicking on save button, nothing happen on UI. However following notifications are generated:

2011-11-18 09:29:14 	error 	Render and/or redirect were called multiple times in this action. Please note that you may only call render OR redirect, and at most once per action. Also note that neither redirect nor render terminate execution of the action, so if you want to exit an action after redirecting, you need to do something like "redirect_to(...) and return". 

Version-Release number of selected component (if applicable):
[root@dhcp201-143 packages]# rpm -qa | grep katello
katello-glue-pulp-0.1.110-2.el6.x86_64
katello-configure-0.1.15-1.el6.noarch
katello-cli-0.1.13-1.el6.noarch
katello-common-0.1.110-2.el6.noarch
katello-0.1.110-2.el6.x86_64
katello-all-0.1.110-2.el6.x86_64
katello-cli-common-0.1.13-1.el6.noarch
katello-glue-foreman-0.1.110-2.el6.x86_64
katello-glue-candlepin-0.1.110-2.el6.x86_64
[root@dhcp201-143 packages]#

How reproducible:
always

Steps to Reproduce:
1. Select system tab --> new system
2. Enter name of system, arch and system type
3. save
  
Actual results:
Nothing happens on UI after clicking the 'save' button. And if you traverse to other and come back again to system tab, the selected machine get listed under system's tab.

Expected results:
No backtrace should be there in production.log.

Additional info:

production.log says:
=====================
Started POST "/katello//systems" for 10.65.193.48 at Fri Nov 18 14:56:59 +0530 2011
  Processing by SystemsController#create as 
  Parameters: {"arch"=>{"arch_id"=>"x86_64"}, "system"=>{"name"=>"dhcp201-191.englab.pnq.redhat.com", "sockets"=>"", "environment_id"=>"4"}, "authenticity_token"=>"ZDQEdpokKBdmfgCRFhXb4oCH27FwPxOJZmePCopycR0=", "utf8"=>"✓", "system_type"=>{"virtualized"=>"virtual"}}
/usr/lib/ruby/gems/1.8/gems/activerecord-3.0.10/lib/active_record/validations.rb:49:in `save!'
/usr/lib/ruby/gems/1.8/gems/activerecord-3.0.10/lib/active_record/attribute_methods/dirty.rb:30:in `save!'
/usr/lib/ruby/gems/1.8/gems/activerecord-3.0.10/lib/active_record/transactions.rb:245:in `save!'
/usr/lib/ruby/gems/1.8/gems/activerecord-3.0.10/lib/active_record/transactions.rb:292:in `with_transaction_returning_status'
/usr/lib/ruby/gems/1.8/gems/activerecord-3.0.10/lib/active_record/connection_adapters/abstract/database_statements.rb:139:in `transaction'
/usr/lib/ruby/gems/1.8/gems/activerecord-3.0.10/lib/active_record/transactions.rb:207:in `transaction'
/usr/lib/ruby/gems/1.8/gems/activerecord-3.0.10/lib/active_record/transactions.rb:290:in `with_transaction_returning_status'
/usr/lib/ruby/gems/1.8/gems/activerecord-3.0.10/lib/active_record/transactions.rb:245:in `save!'
/usr/share/katello/app/models/lazy_accessor.rb:109:in `save!'
/usr/share/katello/app/controllers/systems_controller.rb:80:in `create'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_controller/metal/implicit_render.rb:4:in `send_action'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_controller/metal/implicit_render.rb:4:in `send_action'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/abstract_controller/base.rb:150:in `process_action'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_controller/metal/rendering.rb:11:in `process_action'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/abstract_controller/callbacks.rb:18:in `process_action'
/usr/lib/ruby/gems/1.8/gems/activesupport-3.0.10/lib/active_support/callbacks.rb:457:in `_run__1716125928__process_action__1623385099__callbacks'
/usr/lib/ruby/gems/1.8/gems/activesupport-3.0.10/lib/active_support/callbacks.rb:221:in `_conditional_callback_around_2148'
/usr/share/katello/lib/util/threadsession.rb:79:in `thread_locals'
/usr/lib/ruby/gems/1.8/gems/activesupport-3.0.10/lib/active_support/callbacks.rb:220:in `_conditional_callback_around_2148'
/usr/lib/ruby/gems/1.8/gems/activesupport-3.0.10/lib/active_support/callbacks.rb:451:in `_run__1716125928__process_action__1623385099__callbacks'
/usr/lib/ruby/gems/1.8/gems/activesupport-3.0.10/lib/active_support/callbacks.rb:410:in `send'
/usr/lib/ruby/gems/1.8/gems/activesupport-3.0.10/lib/active_support/callbacks.rb:410:in `_run_process_action_callbacks'
/usr/lib/ruby/gems/1.8/gems/activesupport-3.0.10/lib/active_support/callbacks.rb:94:in `send'
/usr/lib/ruby/gems/1.8/gems/activesupport-3.0.10/lib/active_support/callbacks.rb:94:in `run_callbacks'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/abstract_controller/callbacks.rb:17:in `process_action'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_controller/metal/rescue.rb:17:in `process_action'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_controller/metal/instrumentation.rb:30:in `process_action'
/usr/lib/ruby/gems/1.8/gems/activesupport-3.0.10/lib/active_support/notifications.rb:52:in `instrument'
/usr/lib/ruby/gems/1.8/gems/activesupport-3.0.10/lib/active_support/notifications/instrumenter.rb:21:in `instrument'
/usr/lib/ruby/gems/1.8/gems/activesupport-3.0.10/lib/active_support/notifications.rb:52:in `instrument'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_controller/metal/instrumentation.rb:29:in `process_action'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/abstract_controller/base.rb:119:in `process'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/abstract_controller/rendering.rb:41:in `process'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_controller/metal.rb:138:in `dispatch'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_controller/metal/rack_delegation.rb:14:in `dispatch'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_controller/metal.rb:178:in `action'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_dispatch/routing/route_set.rb:62:in `call'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_dispatch/routing/route_set.rb:62:in `dispatch'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_dispatch/routing/route_set.rb:27:in `call'
/usr/lib/ruby/gems/1.8/gems/rack-mount-0.7.1/lib/rack/mount/route_set.rb:150:in `call'
/usr/lib/ruby/gems/1.8/gems/rack-mount-0.7.1/lib/rack/mount/code_generation.rb:93:in `recognize'
/usr/lib/ruby/gems/1.8/gems/rack-mount-0.7.1/lib/rack/mount/code_generation.rb:68:in `optimized_each'
/usr/lib/ruby/gems/1.8/gems/rack-mount-0.7.1/lib/rack/mount/code_generation.rb:92:in `recognize'
/usr/lib/ruby/gems/1.8/gems/rack-mount-0.7.1/lib/rack/mount/route_set.rb:141:in `call'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_dispatch/routing/route_set.rb:493:in `call'
/usr/lib/ruby/gems/1.8/gems/warden-1.0.5/lib/warden/manager.rb:35:in `call'
/usr/lib/ruby/gems/1.8/gems/warden-1.0.5/lib/warden/manager.rb:34:in `catch'
/usr/lib/ruby/gems/1.8/gems/warden-1.0.5/lib/warden/manager.rb:34:in `call'
/usr/lib/ruby/gems/1.8/gems/sass-3.1.4/lib/sass/../sass/plugin/rack.rb:54:in `call'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_dispatch/middleware/best_standards_support.rb:17:in `call'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_dispatch/middleware/head.rb:14:in `call'
/usr/lib/ruby/gems/1.8/gems/rack-1.3.0/lib/rack/methodoverride.rb:24:in `call'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_dispatch/middleware/params_parser.rb:21:in `call'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_dispatch/middleware/flash.rb:182:in `call'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_dispatch/middleware/session/abstract_store.rb:149:in `call'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_dispatch/middleware/cookies.rb:302:in `call'
/usr/lib/ruby/gems/1.8/gems/activerecord-3.0.10/lib/active_record/query_cache.rb:32:in `call'
/usr/lib/ruby/gems/1.8/gems/activerecord-3.0.10/lib/active_record/connection_adapters/abstract/query_cache.rb:28:in `cache'
/usr/lib/ruby/gems/1.8/gems/activerecord-3.0.10/lib/active_record/query_cache.rb:12:in `cache'
/usr/lib/ruby/gems/1.8/gems/activerecord-3.0.10/lib/active_record/query_cache.rb:31:in `call'
/usr/lib/ruby/gems/1.8/gems/activerecord-3.0.10/lib/active_record/connection_adapters/abstract/connection_pool.rb:354:in `call'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_dispatch/middleware/callbacks.rb:46:in `call'
/usr/lib/ruby/gems/1.8/gems/activesupport-3.0.10/lib/active_support/callbacks.rb:416:in `_run_call_callbacks'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_dispatch/middleware/callbacks.rb:44:in `call'
/usr/lib/ruby/gems/1.8/gems/rack-1.3.0/lib/rack/sendfile.rb:102:in `call'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_dispatch/middleware/remote_ip.rb:48:in `call'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_dispatch/middleware/show_exceptions.rb:47:in `call'
/usr/lib/ruby/gems/1.8/gems/railties-3.0.10/lib/rails/rack/logger.rb:13:in `call'
/usr/lib/ruby/gems/1.8/gems/rack-1.3.0/lib/rack/runtime.rb:17:in `call'
/usr/lib/ruby/gems/1.8/gems/rack-1.3.0/lib/rack/lock.rb:34:in `call'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_dispatch/middleware/static.rb:30:in `call'
/usr/lib/ruby/gems/1.8/gems/railties-3.0.10/lib/rails/application.rb:168:in `call'
/usr/lib/ruby/gems/1.8/gems/railties-3.0.10/lib/rails/application.rb:77:in `send'
/usr/lib/ruby/gems/1.8/gems/railties-3.0.10/lib/rails/application.rb:77:in `method_missing'
/usr/lib/ruby/gems/1.8/gems/rack-1.3.0/lib/rack/urlmap.rb:52:in `call'
/usr/lib/ruby/gems/1.8/gems/rack-1.3.0/lib/rack/urlmap.rb:46:in `each'
/usr/lib/ruby/gems/1.8/gems/rack-1.3.0/lib/rack/urlmap.rb:46:in `call'
/usr/lib/ruby/gems/1.8/gems/thin-1.2.11/lib/thin/connection.rb:84:in `pre_process'
/usr/lib/ruby/gems/1.8/gems/thin-1.2.11/lib/thin/connection.rb:82:in `catch'
/usr/lib/ruby/gems/1.8/gems/thin-1.2.11/lib/thin/connection.rb:82:in `pre_process'
/usr/lib/ruby/gems/1.8/gems/thin-1.2.11/lib/thin/connection.rb:57:in `process'
/usr/lib/ruby/gems/1.8/gems/thin-1.2.11/lib/thin/connection.rb:42:in `receive_data'
/usr/lib/ruby/gems/1.8/gems/eventmachine-0.12.10/lib/eventmachine.rb:256:in `run_machine'
/usr/lib/ruby/gems/1.8/gems/eventmachine-0.12.10/lib/eventmachine.rb:256:in `run'
/usr/lib/ruby/gems/1.8/gems/thin-1.2.11/lib/thin/backends/base.rb:61:in `start'
/usr/lib/ruby/gems/1.8/gems/thin-1.2.11/lib/thin/server.rb:159:in `start'
/usr/lib/ruby/gems/1.8/gems/thin-1.2.11/lib/thin/controllers/controller.rb:86:in `start'
/usr/lib/ruby/gems/1.8/gems/thin-1.2.11/lib/thin/runner.rb:185:in `send'
/usr/lib/ruby/gems/1.8/gems/thin-1.2.11/lib/thin/runner.rb:185:in `run_command'
/usr/lib/ruby/gems/1.8/gems/thin-1.2.11/lib/thin/runner.rb:151:in `run!'
/usr/lib/ruby/gems/1.8/gems/thin-1.2.11/bin/thin:6
/usr/share/katello/script/thin:59:in `load'
/usr/share/katello/script/thin:59
Rendered text template (0.0ms)
Render and/or redirect were called multiple times in this action. Please note that you may only call render OR redirect, and at most once per action. Also note that neither redirect nor render terminate execution of the action, so if you want to exit an action after redirecting, you need to do something like "redirect_to(...) and return".
Render and/or redirect were called multiple times in this action. Please note that you may only call render OR redirect, and at most once per action. Also note that neither redirect nor render terminate execution of the action, so if you want to exit an action after redirecting, you need to do something like "redirect_to(...) and return".
#<AbstractController::DoubleRenderError: Render and/or redirect were called multiple times in this action. Please note that you may only call render OR redirect, and at most once per action. Also note that neither redirect nor render terminate execution of the action, so if you want to exit an action after redirecting, you need to do something like "redirect_to(...) and return".>
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_controller/metal/rendering.rb:16:in `render'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_controller/metal/instrumentation.rb:40:in `render'
/usr/lib/ruby/gems/1.8/gems/activesupport-3.0.10/lib/active_support/core_ext/benchmark.rb:5:in `ms'
/usr/lib/ruby/1.8/benchmark.rb:308:in `realtime'
/usr/lib/ruby/gems/1.8/gems/activesupport-3.0.10/lib/active_support/core_ext/benchmark.rb:5:in `ms'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_controller/metal/instrumentation.rb:40:in `render'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_controller/metal/instrumentation.rb:78:in `cleanup_view_runtime'
/usr/lib/ruby/gems/1.8/gems/activerecord-3.0.10/lib/active_record/railties/controller_runtime.rb:15:in `cleanup_view_runtime'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_controller/metal/instrumentation.rb:39:in `render'
/usr/share/katello/app/controllers/systems_controller.rb:105:in `create'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_controller/metal/implicit_render.rb:4:in `send_action'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_controller/metal/implicit_render.rb:4:in `send_action'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/abstract_controller/base.rb:150:in `process_action'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_controller/metal/rendering.rb:11:in `process_action'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/abstract_controller/callbacks.rb:18:in `process_action'
/usr/lib/ruby/gems/1.8/gems/activesupport-3.0.10/lib/active_support/callbacks.rb:457:in `_run__1716125928__process_action__1623385099__callbacks'
/usr/lib/ruby/gems/1.8/gems/activesupport-3.0.10/lib/active_support/callbacks.rb:221:in `_conditional_callback_around_2148'
/usr/share/katello/lib/util/threadsession.rb:79:in `thread_locals'
/usr/lib/ruby/gems/1.8/gems/activesupport-3.0.10/lib/active_support/callbacks.rb:220:in `_conditional_callback_around_2148'
/usr/lib/ruby/gems/1.8/gems/activesupport-3.0.10/lib/active_support/callbacks.rb:451:in `_run__1716125928__process_action__1623385099__callbacks'
/usr/lib/ruby/gems/1.8/gems/activesupport-3.0.10/lib/active_support/callbacks.rb:410:in `send'
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/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/abstract_controller/callbacks.rb:17:in `process_action'
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/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_controller/metal/rack_delegation.rb:14:in `dispatch'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_controller/metal.rb:178:in `action'
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/usr/lib/ruby/gems/1.8/gems/rack-mount-0.7.1/lib/rack/mount/route_set.rb:150:in `call'
/usr/lib/ruby/gems/1.8/gems/rack-mount-0.7.1/lib/rack/mount/code_generation.rb:93:in `recognize'
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/usr/lib/ruby/gems/1.8/gems/rack-mount-0.7.1/lib/rack/mount/route_set.rb:141:in `call'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_dispatch/routing/route_set.rb:493:in `call'
/usr/lib/ruby/gems/1.8/gems/warden-1.0.5/lib/warden/manager.rb:35:in `call'
/usr/lib/ruby/gems/1.8/gems/warden-1.0.5/lib/warden/manager.rb:34:in `catch'
/usr/lib/ruby/gems/1.8/gems/warden-1.0.5/lib/warden/manager.rb:34:in `call'
/usr/lib/ruby/gems/1.8/gems/sass-3.1.4/lib/sass/../sass/plugin/rack.rb:54:in `call'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_dispatch/middleware/best_standards_support.rb:17:in `call'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_dispatch/middleware/head.rb:14:in `call'
/usr/lib/ruby/gems/1.8/gems/rack-1.3.0/lib/rack/methodoverride.rb:24:in `call'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_dispatch/middleware/params_parser.rb:21:in `call'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_dispatch/middleware/flash.rb:182:in `call'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_dispatch/middleware/session/abstract_store.rb:149:in `call'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_dispatch/middleware/cookies.rb:302:in `call'
/usr/lib/ruby/gems/1.8/gems/activerecord-3.0.10/lib/active_record/query_cache.rb:32:in `call'
/usr/lib/ruby/gems/1.8/gems/activerecord-3.0.10/lib/active_record/connection_adapters/abstract/query_cache.rb:28:in `cache'
/usr/lib/ruby/gems/1.8/gems/activerecord-3.0.10/lib/active_record/query_cache.rb:12:in `cache'
/usr/lib/ruby/gems/1.8/gems/activerecord-3.0.10/lib/active_record/query_cache.rb:31:in `call'
/usr/lib/ruby/gems/1.8/gems/activerecord-3.0.10/lib/active_record/connection_adapters/abstract/connection_pool.rb:354:in `call'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_dispatch/middleware/callbacks.rb:46:in `call'
/usr/lib/ruby/gems/1.8/gems/activesupport-3.0.10/lib/active_support/callbacks.rb:416:in `_run_call_callbacks'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_dispatch/middleware/callbacks.rb:44:in `call'
/usr/lib/ruby/gems/1.8/gems/rack-1.3.0/lib/rack/sendfile.rb:102:in `call'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_dispatch/middleware/remote_ip.rb:48:in `call'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_dispatch/middleware/show_exceptions.rb:47:in `call'
/usr/lib/ruby/gems/1.8/gems/railties-3.0.10/lib/rails/rack/logger.rb:13:in `call'
/usr/lib/ruby/gems/1.8/gems/rack-1.3.0/lib/rack/runtime.rb:17:in `call'
/usr/lib/ruby/gems/1.8/gems/rack-1.3.0/lib/rack/lock.rb:34:in `call'
/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_dispatch/middleware/static.rb:30:in `call'
/usr/lib/ruby/gems/1.8/gems/railties-3.0.10/lib/rails/application.rb:168:in `call'
/usr/lib/ruby/gems/1.8/gems/railties-3.0.10/lib/rails/application.rb:77:in `send'
/usr/lib/ruby/gems/1.8/gems/railties-3.0.10/lib/rails/application.rb:77:in `method_missing'
/usr/lib/ruby/gems/1.8/gems/rack-1.3.0/lib/rack/urlmap.rb:52:in `call'
/usr/lib/ruby/gems/1.8/gems/rack-1.3.0/lib/rack/urlmap.rb:46:in `each'
/usr/lib/ruby/gems/1.8/gems/rack-1.3.0/lib/rack/urlmap.rb:46:in `call'
/usr/lib/ruby/gems/1.8/gems/thin-1.2.11/lib/thin/connection.rb:84:in `pre_process'
/usr/lib/ruby/gems/1.8/gems/thin-1.2.11/lib/thin/connection.rb:82:in `catch'
/usr/lib/ruby/gems/1.8/gems/thin-1.2.11/lib/thin/connection.rb:82:in `pre_process'
/usr/lib/ruby/gems/1.8/gems/thin-1.2.11/lib/thin/connection.rb:57:in `process'
/usr/lib/ruby/gems/1.8/gems/thin-1.2.11/lib/thin/connection.rb:42:in `receive_data'
/usr/lib/ruby/gems/1.8/gems/eventmachine-0.12.10/lib/eventmachine.rb:256:in `run_machine'
/usr/lib/ruby/gems/1.8/gems/eventmachine-0.12.10/lib/eventmachine.rb:256:in `run'
/usr/lib/ruby/gems/1.8/gems/thin-1.2.11/lib/thin/backends/base.rb:61:in `start'
/usr/lib/ruby/gems/1.8/gems/thin-1.2.11/lib/thin/server.rb:159:in `start'
/usr/lib/ruby/gems/1.8/gems/thin-1.2.11/lib/thin/controllers/controller.rb:86:in `start'
/usr/lib/ruby/gems/1.8/gems/thin-1.2.11/lib/thin/runner.rb:185:in `send'
/usr/lib/ruby/gems/1.8/gems/thin-1.2.11/lib/thin/runner.rb:185:in `run_command'
/usr/lib/ruby/gems/1.8/gems/thin-1.2.11/lib/thin/runner.rb:151:in `run!'
/usr/lib/ruby/gems/1.8/gems/thin-1.2.11/bin/thin:6
/usr/share/katello/script/thin:59:in `load'
/usr/share/katello/script/thin:59
Rendering 500:Render and/or redirect were called multiple times in this action. Please note that you may only call render OR redirect, and at most once per action. Also note that neither redirect nor render terminate execution of the action, so if you want to exit an action after redirecting, you need to do something like &quot;redirect_to(...) and return&quot;.
Completed 500 Internal Server Error in 56ms

AbstractController::DoubleRenderError (Render and/or redirect were called multiple times in this action. Please note that you may only call render OR redirect, and at most once per action. Also note that neither redirect nor render terminate execution of the action, so if you want to exit an action after redirecting, you need to do something like "redirect_to(...) and return".):
  app/controllers/application_controller.rb:296:in `render_error'
  app/controllers/application_controller.rb:294:in `render_error'
  app/controllers/application_controller.rb:33:in `__bind_1321608419_283635'
  app/controllers/application_controller.rb:469:in `call'
  app/controllers/application_controller.rb:469:in `execute_rescue'
  app/controllers/application_controller.rb:33:in `__bind_1321608419_283635'

Rendered /usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_dispatch/middleware/templates/rescues/_trace.erb (1.3ms)
Rendered /usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb (10.9ms)
Rendered /usr/lib/ruby/gems/1.8/gems/actionpack-3.0.10/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb within rescues/layout (15.4ms)

Comment 1 Tom McKay 2011-12-01 19:03:36 UTC
commit dead029e779d618a5d63a27e417f34a1d42f6a44
Author: Tom McKay <thomasmckay>
Date:   Thu Dec 1 13:46:39 2011 -0500

    Bug 754955 - #<AbstractController::DoubleRenderError: while registering a system from UI
    https://bugzilla.redhat.com/show_bug.cgi?id=754955
    + was an extra call to 'render' being hit in flow of SystemsController#create

Comment 2 Tom McKay 2011-12-01 19:07:21 UTC
*** Bug 752815 has been marked as a duplicate of this bug. ***

Comment 3 Sachin Ghai 2011-12-06 08:48:12 UTC
I verified this with following build and issue has been fixed.

[root@dhcp193-175 f15]# rpm -qa | grep katello
katello-repos-0.1.4-1.el6.noarch
katello-cli-0.1.20-1.el6.noarch
katello-glue-pulp-0.1.123-1.el6.x86_64
katello-cli-common-0.1.20-1.el6.noarch
katello-glue-foreman-0.1.123-1.el6.x86_64
katello-configure-0.1.21-1.el6.noarch
katello-glue-candlepin-0.1.123-1.el6.x86_64
katello-common-0.1.123-1.el6.noarch
katello-0.1.123-1.el6.x86_64
katello-all-0.1.123-1.el6.x86_64


I can add a system from UI and without any exception production.log.