bundle install doesn't work from capistrano

Question

I want to deploy my simple rails 4.0 application via capistrano 3.0.

I use bundler 1.3.5 so I add capistrano-bundler gem to integrate bundler with capistrano.

I have pretty simple configuration (almost default):

set :bundle_gemfile, -> { release_path.join('Gemfile') }
set :bundle_dir, -> { shared_path.join('bundle') }
set :bundle_flags, ''
set :bundle_without, %w{test development}.join(' ')
set :bundle_binstubs, -> { shared_path.join('bin') }
set :bundle_roles, :all

When I run the cap staging deploy --trace it fails:

[50b524bc] Running /usr/bin/env bundle --gemfile /home/webmaster/www/api/releases/20131014144650/Gemfile --path /home/webmaster/www/api/shared/bundle  --binstubs /home/webmaster/www/api/shared/bin --without test development on 125.51.3.1
DEBUG [50b144bc] Command: cd /home/webmaster/www/api/releases/20131014144650 && /usr/bin/env bundle --gemfile /home/webmaster/www/api/releases/20131014144650/Gemfile --path /home/webmaster/www/api/shared/bundle  --binstubs /home/webmaster/www/api/shared/bin --without test development
cap aborted!
bundle stdout: Nothing written
bundle stderr: Nothing written
/home/omnomnom/.rvm/gems/ruby-2.0.0-p247/gems/sshkit-1.0.0/lib/sshkit/command.rb:94:in `exit_status='
/home/omnomnom/.rvm/gems/ruby-2.0.0-p247/gems/sshkit-1.0.0/lib/sshkit/backends/netssh.rb:125:in `block (4 levels) in _execute'
/home/omnomnom/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.7.0/lib/net/ssh/connection/channel.rb:551:in `call'
/home/omnomnom/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.7.0/lib/net/ssh/connection/channel.rb:551:in `do_request'
/home/omnomnom/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.7.0/lib/net/ssh/connection/session.rb:561:in `channel_request'
/home/omnomnom/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.7.0/lib/net/ssh/connection/session.rb:465:in `dispatch_incoming_packets'
/home/omnomnom/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.7.0/lib/net/ssh/connection/session.rb:221:in `preprocess'
/home/omnomnom/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.7.0/lib/net/ssh/connection/session.rb:205:in `process'
/home/omnomnom/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.7.0/lib/net/ssh/connection/session.rb:169:in `block in loop'
/home/omnomnom/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.7.0/lib/net/ssh/connection/session.rb:169:in `loop'
/home/omnomnom/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.7.0/lib/net/ssh/connection/session.rb:169:in `loop'
/home/omnomnom/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.7.0/lib/net/ssh/connection/channel.rb:269:in `wait'
/home/omnomnom/.rvm/gems/ruby-2.0.0-p247/gems/sshkit-1.0.0/lib/sshkit/backends/netssh.rb:147:in `block (2 levels) in _execute'
/home/omnomnom/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.7.0/lib/net/ssh/connection/channel.rb:514:in `call'
/home/omnomnom/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.7.0/lib/net/ssh/connection/channel.rb:514:in `do_open_confirmation'
/home/omnomnom/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.7.0/lib/net/ssh/connection/session.rb:545:in `channel_open_confirmation'
/home/omnomnom/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.7.0/lib/net/ssh/connection/session.rb:465:in `dispatch_incoming_packets'
/home/omnomnom/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.7.0/lib/net/ssh/connection/session.rb:221:in `preprocess'
/home/omnomnom/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.7.0/lib/net/ssh/connection/session.rb:205:in `process'
/home/omnomnom/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.7.0/lib/net/ssh/connection/session.rb:169:in `block in loop'
/home/omnomnom/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.7.0/lib/net/ssh/connection/session.rb:169:in `loop'
/home/omnomnom/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.7.0/lib/net/ssh/connection/session.rb:169:in `loop'
/home/omnomnom/.rvm/gems/ruby-2.0.0-p247/gems/sshkit-1.0.0/lib/sshkit/backends/netssh.rb:149:in `block in _execute'
/home/omnomnom/.rvm/gems/ruby-2.0.0-p247/gems/sshkit-1.0.0/lib/sshkit/backends/netssh.rb:106:in `tap'
/home/omnomnom/.rvm/gems/ruby-2.0.0-p247/gems/sshkit-1.0.0/lib/sshkit/backends/netssh.rb:106:in `_execute'
/home/omnomnom/.rvm/gems/ruby-2.0.0-p247/gems/sshkit-1.0.0/lib/sshkit/backends/netssh.rb:54:in `execute'
/home/omnomnom/.rvm/gems/ruby-2.0.0-p247/gems/capistrano-bundler-1.0.0/lib/capistrano/tasks/bundler.cap:20:in `block (4 levels) in <top (required)>'
/home/omnomnom/.rvm/gems/ruby-2.0.0-p247/gems/sshkit-1.0.0/lib/sshkit/backends/abstract.rb:81:in `within'
/home/omnomnom/.rvm/gems/ruby-2.0.0-p247/gems/capistrano-bundler-1.0.0/lib/capistrano/tasks/bundler.cap:19:in `block (3 levels) in <top (required)>'
/home/omnomnom/.rvm/gems/ruby-2.0.0-p247/gems/sshkit-1.0.0/lib/sshkit/backends/netssh.rb:42:in `instance_exec'
/home/omnomnom/.rvm/gems/ruby-2.0.0-p247/gems/sshkit-1.0.0/lib/sshkit/backends/netssh.rb:42:in `run'
/home/omnomnom/.rvm/gems/ruby-2.0.0-p247/gems/sshkit-1.0.0/lib/sshkit/runners/parallel.rb:12:in `block (2 levels) in execute'
Tasks: TOP => deploy:updated => bundler:install

But if I copy this command and run though ssh all works fine (all gems installed successfully) How I can fix/debug it?

Answer 1

Just ran into the same issue. What worked for me was this:

1) Installing the capistrano-rvm gem and adding

require 'capistrano/rvm'

to the Capfile.

2) Adding my deployment user to the rvm group on the server:

# usermod deploy -a -G rvm

3) Creating two directories in my deployment user's home folder: .rvm and .rvm/bin

4) Adding this line to my deploy.rb file:

set :default_env, { rvm_bin_path: '~/.rvm/bin' }

Phew! That took a few hours.

Answer 2

The error sounds like it can't find bundle in your PATH. It's possible that when you SSH in manually, it's running something in your ~/.profile or ~/.bash_profile that adds it to your path.

Find the path to bundle by logging in and running which bundle. Then, try to find how that path is added to your PATH environment variable. If there's something in your ~/.bash_profile, try moving it to~/.bashrc` instead.

You can also try Command Mapping to specify an exact path.

There are some more troubleshooting tips at http://www.capistranorb.com/documentation/faq/why-does-something-work-in-my-ssh-session-but-not-in-capistrano/