ruby-on-rails - Capistrano bundler :install fails

Question

我正在尝试使用 Capistrano 3.0 将我的 Rails 应用程序部署到 EC2 实例中。我现在在运行“cap production deploy”或“cap production bundler:install”时出现以下输出。

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

当 ssh 进入服务器并运行相同的命令时(“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") 似乎没问题...

对此感到非常绝望......谢谢!

Answer 1

线条

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]    

表示未找到或未安装 bundler 。 Capistrano(如此处记录 http://www.capistranorb.com/documentation/faq/why-does-something-work-in-my-ssh-session-but-not-in-capistrano/ )在非登录、非交互式 shell 中运行。

我猜测 bundler 安装在一个特殊路径中，或者您正在使用 rvm、chruby 或 rbenv。并且由于 Capistrano 使用的是非登录、非交互式 session ，所以这些东西并没有像您通过 SSH 进入盒子时那样被初始化。

解决方案是使用适合您环境的 capistrano-{rvm,chruby,rbenv} gem，如 Capfile 中所述。

如果您没有使用这些版本管理器之一，请尝试以下操作:

ssh me@theserver 'which bundler'

您可能看不到任何输出(在上面的链接中详细说明了原因)，解决这个问题，Capistrano 就会工作。