Question

Ruby on rails Can't find Gem

Asked by: ThinkBohemian

I have a ubuntu hardy server with REE 1.8.7 and rubygems 1.3.5. I think there is a version problem but I can't find it. When I require the gem SystemTimer in my rails application  i get an error from mod_rails saying

"Missing these required gems: SystemTimer You're running: ruby 1.8.7.174 at /opt/ruby-enterprise-1.8.7-20090928/bin/ruby rubygems 1.3.5 at /home/demo/.gem/ruby/1.8, /opt/ruby-enterprise-1.8.7-20090928/lib/ruby/gems/1.8 Run `rake gems:install` to install the missing gems. "

But if I do a sudo gem install, or sudo rake gems:install i see it get installed, but i still get the same error. I can see it when i use gem list. But still cannot use it. Below is the output of

gem environment. Can someone please help me to figure out why even if my gems path has that gem, my application wouldn't be able to use it? 

$ gem environment
RubyGems Environment:
  - RUBYGEMS VERSION: 1.3.5
  - RUBY VERSION: 1.8.7 (2009-06-12 patchlevel 174) [x86_64-linux]
  - INSTALLATION DIRECTORY: /opt/ruby-enterprise-1.8.7-20090928/lib/ruby/gems/1.8
  - RUBY EXECUTABLE: /opt/ruby-enterprise-1.8.7-20090928/bin/ruby
  - EXECUTABLE DIRECTORY: /opt/ruby-enterprise-1.8.7-20090928/bin
  - RUBYGEMS PLATFORMS:
    - ruby
    - x86_64-linux
  - GEM PATHS:
     - /opt/ruby-enterprise-1.8.7-20090928/lib/ruby/gems/1.8
     - /home/demo/.gem/ruby/1.8
  - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :benchmark => false
     - :backtrace => false
     - :bulk_threshold => 1000
     - :sources => ["http://gems.rubyforge.org/", "http://gems.github.com"]
  - REMOTE SOURCES:
     - http://gems.rubyforge.org/
     - http://gems.github.com

                                  
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Asked On
2009-10-23 at 16:18:41ID24839689
Tags

ruby

,

rails

,

rubygems version problem

Topics

RubyOnRails

,

Ruby Scripting Language

,

Linux

Participating Experts
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Points
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Comments
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Answers

 

by: doadesPosted on 2009-10-24 at 10:38:47ID: 25653286

can you post the output of running

"gem list"

 

by: wesgarrisonPosted on 2009-10-24 at 16:09:48ID: 25654808

If you're running in production mode, you'll need to restart your application after you install gems:

path_to_app:> touch tmp/restart.txt

If you have the system ruby installed, you'll need to make sure you're installing gems in REE instead of the system ruby's gem folder, but your gem environment looks like it's doing that.

Like doades said, it'd help to have a gem listing.

You can also unpack the gem locally (rake gems:unpack) and add it to your repository and do a new deployment.  Personally, I unpack and vendor everything to keep a gem update from breaking my application.  Again, you'll have to restart passenger after you do that.

 

by: ThinkBohemianPosted on 2009-10-24 at 17:38:30ID: 25655031

Below is the output of gem list

I always touch/tmp/restart.txt, i've also tried rebooting the whole server

$ which gem
/usr/bin/gem

$ which ruby
/usr/bin/ruby

  /opt/ruby-enterprise -> /opt/ruby-enterprise-1.8.7-20090928

  /usr/bin
     rails -> /opt/ruby-enterprise/bin/rails
     rake -> /opt/ruby-enterprise/bin/rake
     gem -> /opt/ruby-enterprise/bin/gem


$ sudo gem list
actionmailer (2.3.4)
actionpack (2.3.4)
activerecord (2.3.4)
activeresource (2.3.4)
activesupport (2.3.4)
authlogic (2.1.2)
binarylogic-authlogic (2.1.1)
binarylogic-searchlogic (2.3.5)
chronic (0.2.3)
configatron (2.5.1)
faker (0.3.1)
fastthread (1.0.7)
fiveruns-dash-activerecord (0.8.1)
fiveruns-dash-rails (0.8.6)
fiveruns-dash-ruby (0.8.10)
gdagley-validatable_form (0.0.1)
hoe (2.3.3)
javan-whenever (0.3.7)
json_pure (1.1.9)
less (1.1.13)
mislav-will_paginate (2.3.11)
mocha (0.9.8)
mysql (2.8.1)
passenger (2.2.5)
populator (0.2.5)
postgres (0.7.9.2008.01.28)
rack (1.0.1)
rails (2.3.4)
rake (0.8.7)
relevance-log_buddy (0.4.12)
rmagick (2.12.2)
rubyforge (2.0.3)
sqlite3-ruby (1.2.5)
SystemTimer (1.1.1)
tmail (1.2.3.1)
validatable (1.6.7)
yamler (0.1.0)
                                              
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by: doadesPosted on 2009-10-25 at 03:14:04ID: 25656185

I can see that SystemTimer is there, it might be a silly idea but trying

gem install system_timer

?

 

by: ThinkBohemianPosted on 2009-10-25 at 08:23:49ID: 25656893

I tried gem install SystemTimer and it didn't work:

$ gem install SystemTimer
ERROR:  While executing gem ... (Errno::EACCES)
    Permission denied - /opt/ruby-enterprise-1.8.7-20090928/lib/ruby/gems/1.8/gems/SystemTimer-1.1.1/COPYING
                                              
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by: doadesPosted on 2009-10-25 at 08:24:45ID: 25656898

are you root/administrator user?

 

by: ThinkBohemianPosted on 2009-10-25 at 08:43:14ID: 25656946

If I "sudo -i" and run the same command it looks like it installs fine, problem is i can run the same command multiple times and get the same output like it never installed the first time. Also my passenger installation still complains that it can't find SystemTimer

root # gem install SystemTimer
Building native extensions.  This could take a while...
Successfully installed SystemTimer-1.1.1
1 gem installed
Installing ri documentation for SystemTimer-1.1.1...
Installing RDoc documentation for SystemTimer-1.1.1...
                                              
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by: doadesPosted on 2009-10-25 at 08:44:59ID: 25656948

that's the thing with gems you can run gem install [gem] as many times as you like and it will simply keep installing it

To me it sounds like passenger is looking in the wrong place?

Did you try   "gem install system_timer" ?

Andrew

 

by: ThinkBohemianPosted on 2009-10-25 at 08:58:11ID: 25656992

I just tried that, and it did install, but looks like it may be something different, my application still will not start, below is the backtrace from passenger. If you are right, is there any way i can check to make sure passenger has the correct gem path? I find it strange that this is the only gem that cannot be found, i would think if there was a problem like that, it would complain about all of my gems.

#  	File  	Line  	Location
0 	/opt/ruby-enterprise-1.8.7-20090928/lib/ruby/gems/1.8/gems/rails-2.3.4/lib/initializer.rb 	336 	in `abort'
1 	/opt/ruby-enterprise-1.8.7-20090928/lib/ruby/gems/1.8/gems/rails-2.3.4/lib/initializer.rb 	336 	in `check_gem_dependencies'
2 	/opt/ruby-enterprise-1.8.7-20090928/lib/ruby/gems/1.8/gems/rails-2.3.4/lib/initializer.rb 	170 	in `process'
3 	/opt/ruby-enterprise-1.8.7-20090928/lib/ruby/gems/1.8/gems/rails-2.3.4/lib/initializer.rb 	113 	in `send'
4 	/opt/ruby-enterprise-1.8.7-20090928/lib/ruby/gems/1.8/gems/rails-2.3.4/lib/initializer.rb 	113 	in `run'
5 	/home/demo/public_html/whyspam.me/releases/20091023163212/config/environment.rb 	13 	
6 	/opt/ruby-enterprise-1.8.7-20090928/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb 	31 	in `gem_original_require'
7 	/opt/ruby-enterprise-1.8.7-20090928/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb 	31 	in `require'
8 	/opt/ruby-enterprise-1.8.7-20090928/lib/ruby/gems/1.8/gems/passenger-2.2.5/lib/phusion_passenger/railz/application_spawner.rb 	303 	in `preload_application'
9 	/opt/ruby-enterprise-1.8.7-20090928/lib/ruby/gems/1.8/gems/passenger-2.2.5/lib/phusion_passenger/railz/application_spawner.rb 	252 	in `initialize_server'
10 	/opt/ruby-enterprise-1.8.7-20090928/lib/ruby/gems/1.8/gems/passenger-2.2.5/lib/phusion_passenger/utils.rb 	254 	in `report_app_init_status'
11 	/opt/ruby-enterprise-1.8.7-20090928/lib/ruby/gems/1.8/gems/passenger-2.2.5/lib/phusion_passenger/railz/application_spawner.rb 	237 	in `initialize_server'
12 	/opt/ruby-enterprise-1.8.7-20090928/lib/ruby/gems/1.8/gems/passenger-2.2.5/lib/phusion_passenger/abstract_server.rb 	194 	in `start_synchronously'
13 	/opt/ruby-enterprise-1.8.7-20090928/lib/ruby/gems/1.8/gems/passenger-2.2.5/lib/phusion_passenger/abstract_server.rb 	163 	in `start'
14 	/opt/ruby-enterprise-1.8.7-20090928/lib/ruby/gems/1.8/gems/passenger-2.2.5/lib/phusion_passenger/railz/application_spawner.rb 	213 	in `start'
15 	/opt/ruby-enterprise-1.8.7-20090928/lib/ruby/gems/1.8/gems/passenger-2.2.5/lib/phusion_passenger/spawn_manager.rb 	262 	in `spawn_rails_application'
16 	/opt/ruby-enterprise-1.8.7-20090928/lib/ruby/gems/1.8/gems/passenger-2.2.5/lib/phusion_passenger/abstract_server_collection.rb 	126 	in `lookup_or_add'
17 	/opt/ruby-enterprise-1.8.7-20090928/lib/ruby/gems/1.8/gems/passenger-2.2.5/lib/phusion_passenger/spawn_manager.rb 	256 	in `spawn_rails_application'
18 	/opt/ruby-enterprise-1.8.7-20090928/lib/ruby/gems/1.8/gems/passenger-2.2.5/lib/phusion_passenger/abstract_server_collection.rb 	80 	in `synchronize'
19 	/opt/ruby-enterprise-1.8.7-20090928/lib/ruby/gems/1.8/gems/passenger-2.2.5/lib/phusion_passenger/abstract_server_collection.rb 	79 	in `synchronize'
20 	/opt/ruby-enterprise-1.8.7-20090928/lib/ruby/gems/1.8/gems/passenger-2.2.5/lib/phusion_passenger/spawn_manager.rb 	255 	in `spawn_rails_application'
21 	/opt/ruby-enterprise-1.8.7-20090928/lib/ruby/gems/1.8/gems/passenger-2.2.5/lib/phusion_passenger/spawn_manager.rb 	154 	in `spawn_application'
22 	/opt/ruby-enterprise-1.8.7-20090928/lib/ruby/gems/1.8/gems/passenger-2.2.5/lib/phusion_passenger/spawn_manager.rb 	287 	in `handle_spawn_application'
23 	/opt/ruby-enterprise-1.8.7-20090928/lib/ruby/gems/1.8/gems/passenger-2.2.5/lib/phusion_passenger/abstract_server.rb 	352 	in `__send__'
24 	/opt/ruby-enterprise-1.8.7-20090928/lib/ruby/gems/1.8/gems/passenger-2.2.5/lib/phusion_passenger/abstract_server.rb 	352 	in `main_loop'
25 	/opt/ruby-enterprise-1.8.7-20090928/lib/ruby/gems/1.8/gems/passenger-2.2.5/lib/phusion_passenger/abstract_server.rb 	196 	in `start_synchronously'
26 	/opt/ruby-enterprise-1.8.7-20090928/lib/ruby/gems/1.8/gems/passenger-2.2.5/bin/passenger-spawn-server 	61 	

                                              
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by: wesgarrisonPosted on 2009-10-26 at 07:19:30ID: 25662465

You need to tell passenger to use REE:
http://www.rubyenterpriseedition.com/documentation.html#_using_ree_with_phusion_passenger

Apache:
http://www.modrails.com/documentation/Users%20guide%20Apache.html#PassengerRuby

Nginx:
http://www.modrails.com/documentation/Users%20guide%20Nginx.html#_passenger_ruby_lt_filename_gt


Basically, you add a directive in your site config to tell Passenger which ruby to use.

You might want to set REE as the system ruby, too.  Next section after that first link, if you didn't see it.

 

by: ThinkBohemianPosted on 2009-10-27 at 06:13:12ID: 31646429

Thanks to both of you for your help it turns out that everything was setup correctly, but the name of the lib is actually system_timer.rb and not SystemTImer.rb so i had to modify my environment.rb file as such:

  config.gem 'SystemTimer', :lib => 'system_timer'


I really dislike rubygems setup, and i've had friends give up trying to learn rails after spending a week trying to install ruby/rails/gems/etc. It would be nice if there was a web-cast for purchase, or really really good site explaining how rubygems works and gets integrated into other applications. There are lots of posts on how to get started, but very few people ever talk about it after they tell you to:

sudo make install

20120131-EE-VQP-002

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