Server setup issue using Nginx, RVM, Ruby-1.9.1, and Thin

description.txt

So, I'm setting up a new Ubuntu 10.04 server with nginx, RVM, Ruby-1.9.1, and Thin.

I got through installing nginx, RVM, ruby-1.9.1 without any problems. 
Ruby-1.9.1 was installed using 'rvm install x'; 
I don't have a system Ruby (Which is what I've been doing previously). 
I've also set the default ruby to 1.9.1 for myself and root.

I installed the thin gem using 'gem install thin'
I then installed thin to the system using 
  'thin install' 
and then 
  '/usr/sbin/update-rc.d -f thin defaults' 
which makes a script /etc/init.d/thin that will run on startup.

When I rebooted the server, I got this message during startup:

/usr/local/rvm/rubies/ruby-1.9.1-p378/lib/ruby/site_ruby/1.9.1/rubygems.rb:779:in `report_activate_error': Could not find RubyGem thin (>= 0) (Gem::LoadError)                                                                                  
        from /usr/local/rvm/rubies/ruby-1.9.1-p378/lib/ruby/site_ruby/1.9.1/rubygems.rb:214:in `activate'               
        from /usr/local/rvm/rubies/ruby-1.9.1-p378/lib/ruby/site_ruby/1.9.1/rubygems.rb:1082:in `gem'                   
        from <internal:gem_prelude>:273:in `push_gem_version_on_load_path'                                              
        from <internal:gem_prelude>:14:in `gem'                                                                         
        from /usr/local/rvm/gems/ruby-1.9.1-p378/bin/thin:18:in `<main>'

After a bit of digging with IRB*, I got these values:
  Gem.dir => "/usr/local/rvm/rubies/ruby-1.9.1-p378/lib/ruby/gems/1.9.1"
  Gem.path => ["/root/.gem/ruby/1.9.1", "/usr/local/rvm/rubies/ruby-1.9.1-p378/lib/ruby/gems/1.9.1"]

* IRB was started like this: 
  rvm use system
  /usr/local/rvm/rubies/ruby-1.9.1-p378/bin/ruby /usr/local/rvm/rubies/ruby-1.9.1-p378/bin/irb


So, rubygems is looking at <ruby_dir>/lib/ruby/gems/1.9.1
Problem found! This directory doesn't exist.
The correct directory was <ruby_dir>/lib/ruby/gems/1.9

Since I don't know how to change where Rubygems is looking (in a way that 
won't break anything else), I took the cowards choice and created a symlink
  cd <ruby_dir>/lib/ruby/gems/
  ln -s 1.9 1.9.1

Problem solved...
BTW, thanks for all your great work on RVM!

this fixed the problem for me.
http://stackoverflow.com/questions/3230404/rvm-and-thin-root-vs-local-user