Capistrano bundler:install fails

Question

I'm trying to deploy my rails app into an EC2 instance using Capistrano 3.0. I'm now stack with the following output which appears when running "cap production deploy" or "cap production bundler:install".

DEBUG [5b379979] Running /usr/bin/env if test ! -d /var/www/app/current; then echo "Directory does not exist '/var/www/app/current'" 1>&2; false; fi on ec2-75-101-200-185.compute-1.amazonaws.com
DEBUG [5b379979] Command: if test ! -d /var/www/app/current; then echo "Directory does not exist '/var/www/app/current'" 1>&2; false; fi
DEBUG [5b379979] Finished in 2.285 seconds command successful.
 INFO [f15c9f08] Running /usr/bin/env bundle --gemfile /var/www/app/current/Gemfile --path /var/www/app/shared/bundle --deployment --verbose --binstubs /var/www/billtune/shared/bin --without development test on ec2-75-101-200-185.compute-1.amazonaws.com
DEBUG [f15c9f08] Command: cd /var/www/app/current && /usr/bin/env bundle --gemfile /var/www/app/current/Gemfile --path /var/www/app/shared/bundle --deployment --verbose --binstubs /var/www/app/shared/bin --without development test
DEBUG [f15c9f08]    /usr/bin/env: 
DEBUG [f15c9f08]    bundle
DEBUG [f15c9f08]    : No such file or directory
DEBUG [f15c9f08]    
cap aborted!
bundle stdout: Nothing written
bundle stderr: Nothing written
/Users/shaimo-mbp/.rvm/gems/ruby-1.9.3-p448/gems/sshkit-1.0.0/lib/sshkit/command.rb:94:in `exit_status='
/Users/shaimo-mbp/.rvm/gems/ruby-1.9.3-p448/gems/sshkit-1.0.0/lib/sshkit/backends/netssh.rb:125:in `block (4 levels) in _execute'
/Users/shaimo-mbp/.rvm/gems/ruby-1.9.3-p448/gems/net-ssh-2.7.0/lib/net/ssh/connection/channel.rb:551:in `call'
/Users/shaimo-mbp/.rvm/gems/ruby-1.9.3-p448/gems/net-ssh-2.7.0/lib/net/ssh/connection/channel.rb:551:in `do_request'
/Users/shaimo-mbp/.rvm/gems/ruby-1.9.3-p448/gems/net-ssh-2.7.0/lib/net/ssh/connection/session.rb:561:in `channel_request'
/Users/shaimo-mbp/.rvm/gems/ruby-1.9.3-p448/gems/net-ssh-2.7.0/lib/net/ssh/connection/session.rb:465:in `dispatch_incoming_packets'
/Users/shaimo-mbp/.rvm/gems/ruby-1.9.3-p448/gems/net-ssh-2.7.0/lib/net/ssh/connection/session.rb:221:in `preprocess'
/Users/shaimo-mbp/.rvm/gems/ruby-1.9.3-p448/gems/net-ssh-2.7.0/lib/net/ssh/connection/session.rb:205:in `process'
/Users/shaimo-mbp/.rvm/gems/ruby-1.9.3-p448/gems/net-ssh-2.7.0/lib/net/ssh/connection/session.rb:169:in `block in loop'
/Users/shaimo-mbp/.rvm/gems/ruby-1.9.3-p448/gems/net-ssh-2.7.0/lib/net/ssh/connection/session.rb:169:in `loop'
/Users/shaimo-mbp/.rvm/gems/ruby-1.9.3-p448/gems/net-ssh-2.7.0/lib/net/ssh/connection/session.rb:169:in `loop'
/Users/shaimo-mbp/.rvm/gems/ruby-1.9.3-p448/gems/net-ssh-2.7.0/lib/net/ssh/connection/channel.rb:269:in `wait'
/Users/shaimo-mbp/.rvm/gems/ruby-1.9.3-p448/gems/sshkit-1.0.0/lib/sshkit/backends/netssh.rb:147:in `block (2 levels) in _execute'
/Users/shaimo-mbp/.rvm/gems/ruby-1.9.3-p448/gems/net-ssh-2.7.0/lib/net/ssh/connection/channel.rb:514:in `call'
/Users/shaimo-mbp/.rvm/gems/ruby-1.9.3-p448/gems/net-ssh-2.7.0/lib/net/ssh/connection/channel.rb:514:in `do_open_confirmation'
/Users/shaimo-mbp/.rvm/gems/ruby-1.9.3-p448/gems/net-ssh-2.7.0/lib/net/ssh/connection/session.rb:545:in `channel_open_confirmation'
/Users/shaimo-mbp/.rvm/gems/ruby-1.9.3-p448/gems/net-ssh-2.7.0/lib/net/ssh/connection/session.rb:465:in `dispatch_incoming_packets'
/Users/shaimo-mbp/.rvm/gems/ruby-1.9.3-p448/gems/net-ssh-2.7.0/lib/net/ssh/connection/session.rb:221:in `preprocess'
/Users/shaimo-mbp/.rvm/gems/ruby-1.9.3-p448/gems/net-ssh-2.7.0/lib/net/ssh/connection/session.rb:205:in `process'
/Users/shaimo-mbp/.rvm/gems/ruby-1.9.3-p448/gems/net-ssh-2.7.0/lib/net/ssh/connection/session.rb:169:in `block in loop'
/Users/shaimo-mbp/.rvm/gems/ruby-1.9.3-p448/gems/net-ssh-2.7.0/lib/net/ssh/connection/session.rb:169:in `loop'
/Users/shaimo-mbp/.rvm/gems/ruby-1.9.3-p448/gems/net-ssh-2.7.0/lib/net/ssh/connection/session.rb:169:in `loop'
/Users/shaimo-mbp/.rvm/gems/ruby-1.9.3-p448/gems/sshkit-1.0.0/lib/sshkit/backends/netssh.rb:149:in `block in _execute'
/Users/shaimo-mbp/.rvm/gems/ruby-1.9.3-p448/gems/sshkit-1.0.0/lib/sshkit/backends/netssh.rb:106:in `tap'
/Users/shaimo-mbp/.rvm/gems/ruby-1.9.3-p448/gems/sshkit-1.0.0/lib/sshkit/backends/netssh.rb:106:in `_execute'
/Users/shaimo-mbp/.rvm/gems/ruby-1.9.3-p448/gems/sshkit-1.0.0/lib/sshkit/backends/netssh.rb:54:in `execute'
/Users/shaimo-mbp/.rvm/gems/ruby-1.9.3-p448/gems/capistrano-bundler-1.0.0/lib/capistrano/tasks/bundler.cap:20:in `block (4 levels) in <top (required)>'
/Users/shaimo-mbp/.rvm/gems/ruby-1.9.3-p448/gems/sshkit-1.0.0/lib/sshkit/backends/abstract.rb:81:in `within'
/Users/shaimo-mbp/.rvm/gems/ruby-1.9.3-p448/gems/capistrano-bundler-1.0.0/lib/capistrano/tasks/bundler.cap:19:in `block (3 levels) in <top (required)>'
/Users/shaimo-mbp/.rvm/gems/ruby-1.9.3-p448/gems/sshkit-1.0.0/lib/sshkit/backends/netssh.rb:42:in `instance_exec'
/Users/shaimo-mbp/.rvm/gems/ruby-1.9.3-p448/gems/sshkit-1.0.0/lib/sshkit/backends/netssh.rb:42:in `run'
/Users/shaimo-mbp/.rvm/gems/ruby-1.9.3-p448/gems/sshkit-1.0.0/lib/sshkit/runners/parallel.rb:12:in `block (2 levels) in execute'
Tasks: TOP => bundler:install

When ssh-ing into the server and running the same command ("cd /var/www/app/current && /usr/bin/env bundle --gemfile /var/www/app/current/Gemfile --path /var/www/app/shared/bundle --deployment --verbose --binstubs /var/www/app/shared/bin --without development test") all seems to be ok...

Getting quite desperate about this... Thanks!

Answer 1

The lines

DEBUG [f15c9f08] Command: cd /var/www/app/current && /usr/bin/env bundle --gemfile /var/www/app/current/Gemfile --path /var/www/app/shared/bundle --deployment --verbose --binstubs /var/www/app/shared/bin --without development test
DEBUG [f15c9f08]    /usr/bin/env: 
DEBUG [f15c9f08]    bundle
DEBUG [f15c9f08]    : No such file or directory
DEBUG [f15c9f08]    

Indicate that bundler isn't found, or isn't installed. Capistrano (as documented here http://www.capistranorb.com/documentation/faq/why-does-something-work-in-my-ssh-session-but-not-in-capistrano/) runs in a non-login, non-interactive shell.

I would guess that bundler is installed in a special path, or that you are using rvm, chruby, or rbenv. And that these things aren't being initialized as they are when you SSH into the box, because of the non-login, non-interactive session that Capistrano is using.

The solution is to use either the capistrano-{rvm,chruby,rbenv} gem which suits your envrironment as documented in the Capfile.

If you are not using one of those version managers, try this:

ssh me@theserver 'which bundler'

Probably you will see no output (more on why at the link above), solve that, and Capistrano will work.

Answer 2

The issue was indeed with the non-interactive shell.

Eventually I had to add the following line to .bashrc:

source ~/.rvm/scripts/rvm

In case others get into similar issues, I will add that I also had to map the rake command so it would work properly. Had to add the following line to my deploy.rb file:

SSHKit.config.command_map[:rake] = "bundle exec rake"

Answer 3

You'd better use capistrano-rbenv gem to manage your ror env

1. add gem 'capistrano-rbenv', '~> 2.0' to your gemfile
2. uncomment require 'capistrano/rbenv' in your capfile; if capistrano/bundler commented, uncomment it also
3. set the rbenv_ruby variable set :rbenv_ruby, '2.0.0-p247' in your deploy file

then all set!

Answer 4

I was able to solve the issue by adding the following code to ~/.bashrc:

export RBENV_ROOT="${HOME}/.rbenv"

if [ -d "${RBENV_ROOT}" ]; then
  export PATH="${RBENV_ROOT}/bin:${PATH}"
  eval "$(rbenv init -)"
fi