mysql - Bundler 声称已安装我的 bundle ，但找不到 Rails 或 MySQL

Question

我已登录到我的生产服务器，尝试手动深入研究 Capistrano 部署中遇到的问题。

这是 Capistrano 正在运行的线路。

deploy@borges:/domains/myapp.com/releases/20140119013611$ env RBENV_ROOT="/home/deploy/.rbenv" PATH="/home/deploy/.rbenv/shims:/home/deploy/.rbenv/bin:$PATH" RBENV_VERSION="2.0.0-p353" /home/deploy/.rbenv/bin/rbenv exec bundle install --gemfile /domains/myapp.com/releases/20140119013611/Gemfile --path /domains/myapp.com/shared/bundle --deployment --without development test

这似乎可以解决问题:

Using rake (10.1.1)
Using i18n (0.6.9)
Using multi_json (1.8.4)
Using activesupport (3.2.16)
Using builder (3.0.4)
Using activemodel (3.2.16)
Using erubis (2.7.0)
Using journey (1.0.4)
Using rack (1.4.5)
Using rack-cache (1.2)
Using rack-test (0.6.2)
Using hike (1.2.3)
Using tilt (1.4.1)
Using sprockets (2.2.2)
Using actionpack (3.2.16)
Using mime-types (1.25.1)
Using polyglot (0.3.3)
Using treetop (1.4.15)
Using mail (2.5.4)
Using actionmailer (3.2.16)
Using arel (3.0.3)
Using tzinfo (0.3.38)
Using activerecord (3.2.16)
Using activeresource (3.2.16)
Using highline (1.6.20)
Using net-ssh (2.7.0)
Using net-scp (1.1.2)
Using net-sftp (2.1.2)
Using net-ssh-gateway (1.2.0)
Using capistrano (2.15.5)
Using capistrano-platform-resources (0.1.3)
Using capistrano-rbenv (1.0.5)
Using json (1.8.1)
Using carrierwave (0.9.0)
Using chronic (0.10.2)
Using coffee-script-source (1.6.3)
Using execjs (2.0.2)
Using coffee-script (2.2.0)
Using rack-ssl (1.3.3)
Using rdoc (3.12.2)
Using thor (0.18.1)
Using railties (3.2.16)
Using coffee-rails (3.2.1)
Using daemons (1.1.9)
Using delayed_job (4.0.0)
Using delayed_job_active_record (4.0.0)
Using haml (4.0.5)
Using rack-protection (1.5.1)
Using sinatra (1.4.4)
Using delayed_job_web (1.2.1)
Using dynamic_form (1.1.4)
Using exception_notification (4.0.1)
Using jquery-rails (3.0.4)
Using mysql2 (0.3.14)
Using newrelic_rpm (3.7.1.182)
Using bundler (1.5.2)
Using rails (3.2.16)
Using riddle (1.5.10)
Using rmagick (2.13.2)
Using rubypants (0.2.0)
Using rvm-capistrano (1.5.1)
Using sass (3.2.13)
Using sass-rails (3.2.6)
Using thinking-sphinx (2.0.14)
Using uglifier (2.4.0)
Using whenever (0.9.0)
Using will_paginate (3.0.5)
Your bundle is complete!
Gems in the groups development and test were not installed.
It was installed into /domains/myapp.com/shared/bundle

或者，我可以从该发布目录运行 bundle install 并获得相同的输出。 (奇怪的是，当我刚刚运行 bundle update 时，我得到了绿色的 你的包已完成! ，但当我运行较长的行时却没有，尽管输出的文本看起来是相同的。 )

但是，我的包仍然不太对劲，因为如果不调用 Bundler，我就无法让 Rails 工作:

# rails c
The program 'rails' is currently not installed.  To run 'rails' please ask your administrator to install the package 'rails'

当我尝试使用 Bundler 运行 Rails 时，它提示找不到 MySQL:

# be rails c
/domains/myapp.com/shared/bundle/ruby/2.0.0/gems/mysql2-0.3.14/lib/mysql2.rb:8:in `require': libruby.so.2.0: cannot open shared object file: No such file or directory - /domains/myapp.com/shared/bundle/ruby/2.0.0/gems/mysql2-0.3.14/lib/mysql2/mysql2.so (LoadError)
from /domains/myapp.com/shared/bundle/ruby/2.0.0/gems/mysql2-0.3.14/lib/mysql2.rb:8:in `<top (required)>'
from /home/deploy/.rbenv/versions/2.0.0-p353/lib/ruby/gems/2.0.0/gems/bundler-1.5.2/lib/bundler/runtime.rb:76:in `require'
from /home/deploy/.rbenv/versions/2.0.0-p353/lib/ruby/gems/2.0.0/gems/bundler-1.5.2/lib/bundler/runtime.rb:76:in `block (2 levels) in require'
from /home/deploy/.rbenv/versions/2.0.0-p353/lib/ruby/gems/2.0.0/gems/bundler-1.5.2/lib/bundler/runtime.rb:72:in `each'
from /home/deploy/.rbenv/versions/2.0.0-p353/lib/ruby/gems/2.0.0/gems/bundler-1.5.2/lib/bundler/runtime.rb:72:in `block in require'
from /home/deploy/.rbenv/versions/2.0.0-p353/lib/ruby/gems/2.0.0/gems/bundler-1.5.2/lib/bundler/runtime.rb:61:in `each'
from /home/deploy/.rbenv/versions/2.0.0-p353/lib/ruby/gems/2.0.0/gems/bundler-1.5.2/lib/bundler/runtime.rb:61:in `require'
from /home/deploy/.rbenv/versions/2.0.0-p353/lib/ruby/gems/2.0.0/gems/bundler-1.5.2/lib/bundler.rb:131:in `require'
from /domains/myapp.com/releases/20140119013611/config/application.rb:7:in `<top (required)>'
from /domains/myapp.com/shared/bundle/ruby/2.0.0/gems/railties-3.2.16/lib/rails/commands.rb:39:in `require'
from /domains/myapp.com/shared/bundle/ruby/2.0.0/gems/railties-3.2.16/lib/rails/commands.rb:39:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'

关于没有这样的文件或目录的更奇怪的事情 -/domains/myapp.com/shared/bundle/ruby/2.0.0/gems/mysql2-0.3.14/lib/mysql2/mysql2.so 错误是我可以通过制表符完成到该确切文件的确切路径。所以它绝对不是“失踪”。

你知道这里发生了什么吗？我错过了什么？

更新:我注意到bundle install --deployment似乎完全做了其他事情，例如Installing rake等，而不是使用 rake 。现在我可以运行 be Rails c 和 be rake db:migrate 并且它们都可以工作。那太好了。但我的 cap 部署仍然失败，因为它使用上面列出的第一个命令。如何解决根本原因？

更新 2: 尝试从本地计算机使用 bundle exec cap deploy 会产生类似的输出。这是完整的输出:

  be cap deploy
    triggering load callbacks
  * 2014-01-19 16:46:53 executing `rbenv:setup_default_environment'
  * executing "echo \"$HOME/.rbenv\""
    servers: ["66.228.43.102"]
    [66.228.43.102] executing command
    command finished in 487ms
  * 2014-01-19 16:46:55 executing `deploy'
  * 2014-01-19 16:46:55 executing `deploy:update'
 ** transaction: start
  * 2014-01-19 16:46:55 executing `deploy:update_code'
    executing locally: "git ls-remote git@bitbucket.org:username/myapp.git HEAD"
    command finished in 1983ms
  * executing "git clone -q git@bitbucket.org:username/myapp.git /domains/myapp.com/releases/20140120004657 && cd /domains/myapp.com/releases/20140120004657 && git checkout -q -b deploy 850a0e297ad0fd9699174d581fc96f4bafd73f07 && (echo 850a0e297ad0fd9699174d581fc96f4bafd73f07 > /domains/myapp.com/releases/20140120004657/REVISION)"
    servers: ["66.228.43.102"]
    [66.228.43.102] executing command
    command finished in 10210ms
  * 2014-01-19 16:47:08 executing `deploy:finalize_update'
    triggering before callbacks for `deploy:finalize_update'
  * 2014-01-19 16:47:08 executing `bundle:install'
  * executing "cd /domains/myapp.com/releases/20140120004657 && env RBENV_ROOT=\"/home/deploy/.rbenv\" PATH=\"/home/deploy/.rbenv/shims:/home/deploy/.rbenv/bin:$PATH\" RBENV_VERSION=\"2.0.0-p353\" /home/deploy/.rbenv/bin/rbenv exec bundle install --gemfile /domains/myapp.com/releases/20140120004657/Gemfile --path /domains/myapp.com/shared/bundle --deployment --quiet --without development test"
    servers: ["66.228.43.102"]
    [66.228.43.102] executing command
    command finished in 1641ms
  * 2014-01-19 16:47:09 executing `whenever:update_crontab'
  * executing "cd /domains/myapp.com/releases/20140120004657 && bundle exec whenever --update-crontab Ink Node --set environment=production --roles db"
    servers: ["66.228.43.102"]
    [66.228.43.102] executing command
 ** [out :: 66.228.43.102] [write] crontab file updated
    command finished in 2250ms
  * executing "chmod -R -- g+w /domains/myapp.com/releases/20140120004657 && rm -rf -- /domains/myapp.com/releases/20140120004657/public/system && mkdir -p -- /domains/myapp.com/releases/20140120004657/public/ && ln -s -- /domains/myapp.com/shared/system /domains/myapp.com/releases/20140120004657/public/system && rm -rf -- /domains/myapp.com/releases/20140120004657/log && ln -s -- /domains/myapp.com/shared/log /domains/myapp.com/releases/20140120004657/log && rm -rf -- /domains/myapp.com/releases/20140120004657/tmp/pids && mkdir -p -- /domains/myapp.com/releases/20140120004657/tmp/ && ln -s -- /domains/myapp.com/shared/pids /domains/myapp.com/releases/20140120004657/tmp/pids"
    servers: ["66.228.43.102"]
    [66.228.43.102] executing command
    command finished in 477ms
  * executing "find /domains/myapp.com/releases/20140120004657/public/images /domains/myapp.com/releases/20140120004657/public/stylesheets /domains/myapp.com/releases/20140120004657/public/javascripts -exec touch -t 201401200047.12 -- {} ';'; true"
    servers: ["66.228.43.102"]
    [66.228.43.102] executing command
    command finished in 750ms
    triggering after callbacks for `deploy:update_code'
  * 2014-01-19 16:47:13 executing `deploy:symlink_shared'
  * executing "ln -nfs /domains/myapp.com/shared/config/database.yml /domains/myapp.com/releases/20140120004657/config/database.yml"
    servers: ["66.228.43.102"]
    [66.228.43.102] executing command
    command finished in 464ms
  * executing "ln -nfs /domains/myapp.com/shared/assets /domains/myapp.com/releases/20140120004657/public/assets"
    servers: ["66.228.43.102"]
    [66.228.43.102] executing command
    command finished in 455ms
  * executing "ln -nfs /domains/myapp.com/shared/uploads  /domains/myapp.com/releases/20140120004657/public/uploads"
    servers: ["66.228.43.102"]
    [66.228.43.102] executing command
    command finished in 440ms
  * 2014-01-19 16:47:14 executing `deploy:create_symlink'
  * executing "rm -f /domains/myapp.com/current &&  ln -s /domains/myapp.com/releases/20140120004657 /domains/myapp.com/current"
    servers: ["66.228.43.102"]
    [66.228.43.102] executing command
    command finished in 442ms
 ** transaction: commit
  * 2014-01-19 16:47:14 executing `deploy:restart'
  * executing "touch /domains/myapp.com/current/tmp/restart.txt"
    servers: ["66.228.43.102"]
    [66.228.43.102] executing command
    command finished in 463ms
    triggering after callbacks for `deploy'
  * 2014-01-19 16:47:15 executing `deploy:migrate'
  * executing "cd /domains/myapp.com/releases/20140120004657 && env RBENV_ROOT=\"/home/deploy/.rbenv\" PATH=\"/home/deploy/.rbenv/shims:/home/deploy/.rbenv/bin:$PATH\" RBENV_VERSION=\"2.0.0-p353\" /home/deploy/.rbenv/bin/rbenv exec bundle exec rake RAILS_ENV=production  db:migrate"
    servers: ["66.228.43.102"]
    [66.228.43.102] executing command
 ** [out :: 66.228.43.102] rake aborted!
 ** [out :: 66.228.43.102] libruby.so.2.0: cannot open shared object file: No such file or directory - /domains/myapp.com/shared/bundle/ruby/2.0.0/gems/mysql2-0.3.14/lib/mysql2/mysql2.so
 ** [out :: 66.228.43.102] /domains/myapp.com/shared/bundle/ruby/2.0.0/gems/mysql2-0.3.14/lib/mysql2.rb:8:in `require'
 ** [out :: 66.228.43.102] /domains/myapp.com/shared/bundle/ruby/2.0.0/gems/mysql2-0.3.14/lib/mysql2.rb:8:in `<top (required)>'
 ** [out :: 66.228.43.102] /domains/myapp.com/releases/20140120004657/config/application.rb:7:in `<top (required)>'
 ** [out :: 66.228.43.102] /domains/myapp.com/releases/20140120004657/Rakefile:4:in `require'
 ** [out :: 66.228.43.102] /domains/myapp.com/releases/20140120004657/Rakefile:4:in `<top (required)>'
 ** [out :: 66.228.43.102] (See full trace by running task with --trace)
    command finished in 2648ms
failed: "env PATH=/home/deploy/.rbenv/shims:/home/deploy/.rbenv/bin:$PATH RBENV_ROOT=/home/deploy/.rbenv sh -c 'cd /domains/myapp.com/releases/20140120004657 && env RBENV_ROOT=\"/home/deploy/.rbenv\" PATH=\"/home/deploy/.rbenv/shims:/home/deploy/.rbenv/bin:$PATH\" RBENV_VERSION=\"2.0.0-p353\" /home/deploy/.rbenv/bin/rbenv exec bundle exec rake RAILS_ENV=production  db:migrate'" on 66.228.43.102

Answer 1

首先，您在运行 bundle install 时设置了相当多的环境变量，但在运行 rails c 时没有设置任何环境变量。因此这两个命令在不同的环境中运行，这可能会导致问题。

现在回答问题:也尝试通过 bundle exec 运行 cap。

bundle exec cap deploy