I'm trying to deploy my first app 
on a server with Capistrano, and I'm a bit lost with managing gemsets and 
ruby version.
These are my (server and workstation) versions :
Rails 3.
2.8
RVM 1.16.17
Gem 1.8.24
Bundler 1.
2.1
pg gem 0.14.1
My gemset are :
Gemsets for ruby-1.9.3-p194 (found in /usr/local/rvm/gems/ruby-1.9.3-p194)
(default)
global
= rail3dev20120606
I set the default gemset with :
rvm use 1.9.3-p194@rail3dev20120606 --default --passenger
When I run a :
cap bundle:install
The task end with success, but when I do a :
gem list
There are many missing gems though they are present in my Gemfile.
When I go to check my gems in /var/www/opf/shared/bundle/ruby/ I find a folder called 1.9.1 and in /var/www/opf/shared/bundle/ruby/1.9.1/gems/ I can fond all of my needed gems (specified in Gemfile). I'm sure there is a problem with 
ruby version, but how do I solve this ?
At the moment, if I do any rake command, I got a 
ruby crash [Bug] Segmentation fault, as it try to access the db and using postgresql_adapter.
I think as many gems are missing there must have some gem dependencies not verified, and maybe a gem is using an incompatible 
ruby version 1.9.1 though it expect a 1.9.3.
I think the issue is around managing 
ruby versions and gems. I'm certainly doing some mix with gemset and my capistrano deployement.
I'm missing experience and info.
Could anybody advise me how to handle this 
on the server ? What are the best practices ?
How am I suppose to update my 
ruby version ? with Capistrano deploy.rb ? manually ? with/without rvm ? I saw a new version of 
ruby 1.9.3-p327 has just released.
Should I use gemset or not ? What about the :rvm_ruby_string in my deploy.rb. Is it correctly spelled or should I remove the p194 part ? Should I Remove the :rvm_ruby_string ? Keep it ? Use a .rvmrc file ???
I'm really lost and some kind help would be welcome.
This is my config/deploy.rb in any case :
require 'bundler/capistrano'
require File.join(File.dirname(__FILE__), 'deploy') + '/capistrano_database'
set :rvm_type, :system
set :rvm_ruby_string, 'ruby-1.9.3-p194@rail3dev20120606'
require 'rvm/capistrano'
set :application, 'opf'
set :deploy_to, '/var/www/opf'
set :rails_env, 'production'
set :user, 'the_user'
set :use_sudo, false
set :group_writable, false
set :scm, :git
set :repository,  '
[email protected]:user/opf.git'
set :branch, 'master'
default_run_options[:pty] = true
set :deploy_via, :remote_cache
server '192.168.5.200', :web, :app, :db, :primary => true
# If you are using Passenger mod_rails uncomment this:
namespace :deploy do
  task :start do ; end
  task :stop do ; end
  task :restart, :roles => :app, :except => { :no_release => true } do
    run "#{try_sudo} touch #{File.join(current_path,'tmp','restart.txt')}"
  end
end
Thanks for any help