Rails 3 -- Bundler/Capistrano Errors

Question

I have a basic Rails 3 app working locally on my development box, but want to test out deploying early on to make sure everything works. I'm using Capistrano to deploy.

When I run cap deploy (after all the other necessary setup), it breaks on this command with this error:

[...]
* executing 'bundle:install'
* executing "bundle install --gemfile /var/www/trex/releases/20100917172521/Gemfile --path /var/www/trex/shared/bundle --deployment --quiet --without development test"

servers: ["www.[my domain].com"]
[www.[my domain].com] executing command
** [out :: www.[my domain].com] sh: bundle: command not found
command finished
[...]

So it looks like it can't find the bundle command on the server.

However, when I log in to the server...

$ ruby -v
ruby 1.9.2p0 (2010-08-18 revision 29036) [x86_64-linux]
$ rails -v
Rails 3.0.0
$ bundle -v
Bundler version 1.0.0

...the bundle command works just fine.

What could be going wrong?

-

(Furthermore, for completeness:)

$ which ruby
~/.rvm/rubies/ruby-1.9.2-p0/bin/ruby
$ which rails
~/.rvm/gems/ruby-1.9.2-p0/bin/rails
$ which bundle
~/.rvm/gems/ruby-1.9.2-p0/bin/bundle

Answer 1

UPDATE:

For RVM >= 1.11.3, you should now just use the rvm-capistrano gem. For older RVM >= 1.0.1, the answer below still applies.

---

ORIGINAL ANSWER:

Okay, though I still haven't gotten a full cap deploy to work, I did fix this problem. The problem was Capistrano trying to use a different path for Bundler (and other gems) than the RVM paths.

Check your Capistrano path by doing cap shell, then echo $PATH. You'll probably see your standard /usr/local/bin and /usr/bin, but that's not where RVM has Bundler, et al., stored.

Edit your Capistrano config/deploy.rb file, and add the following lines, per these instructions:

# Add RVM's lib directory to the load path.
$:.unshift(File.expand_path('./lib', ENV['rvm_path']))

# Load RVM's capistrano plugin.    
require "rvm/capistrano"

set :rvm_ruby_string, '1.9.2'
set :rvm_type, :user  # Don't use system-wide RVM

That finally got Capistrano to see Bundler and start loading gems appropriately.