Capistrano 杀死资产：预编译

我正在尝试部署我的应用程序，但我不断收到

*** [err :: xxx.xxx.xx.xxx] bash: line 1:  9953 Killed                  bundle exec rake RAILS_ENV=production RAILS_GROUPS=assets assets:precompile

我认为问题在于这个过程花费的时间太长。日志中没有错误并且top没有表现出任何异常。我设法从日志中得到的是它正在杀死的进程似乎是application.js汇编。

当我跑的时候rake assets:precompile在本地，没有错误/警告。

我可以延长 capistrano 在终止进程之前等待的时间吗？这真的是问题所在吗？我还能去哪里看？

Update

跑步时

bundle exec rake assets:precompile RAILS_ENV=production RAILS_GROUPS=assets --trace

我得到以下输出

** Invoke assets:precompile (first_time)
** Execute assets:precompile
** Invoke assets:precompile:all (first_time)
** Execute assets:precompile:all
** Invoke assets:precompile:primary (first_time)
** Invoke assets:environment (first_time)
** Execute assets:environment
** Invoke tmp:cache:clear (first_time)
** Execute tmp:cache:clear
** Execute assets:precompile:primary
Killed

当我跑步时

bundle exec rake assets:precompile RAILS_ENV=production --trace

I get

** 执行资产：预编译

.../.rvm/rubies/ruby-1.9.3-p374/bin/ruby path/to/app/production/shared/bundle/ruby/1.9.1/bin/rake assets:precompile:all RAILS_ENV=production RAILS_GROUPS=assets --trace

** Invoke assets:precompile:all (first_time)

** Execute assets:precompile:all

** Invoke assets:precompile:primary (first_time)

** Invoke assets:environment (first_time)

** Execute assets:environment

** Invoke tmp:cache:clear (first_time)

** Execute tmp:cache:clear

** Execute assets:precompile:primary

rake aborted!

Command failed with status (): [/home/user/.rvm/rubies/ruby-1.9.3-p374...]

path/to/app/production/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/file_utils.rb:53:in `block in create_shell_runner'

path/to/app/production/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/file_utils.rb:45:in `call'

path/to/app/production/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/file_utils.rb:45:in `sh'

path/to/app/production/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/file_utils_ext.rb:40:in `sh'

path/to/app/production/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/file_utils.rb:80:in `ruby'

path/to/app/production/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/file_utils_ext.rb:40:in `ruby'

path/to/app/production/shared/bundle/ruby/1.9.1/gems/actionpack-3.2.11/lib/sprockets/assets.rake:12:in `ruby_rake_task'

path/to/app/production/shared/bundle/ruby/1.9.1/gems/actionpack-3.2.11/lib/sprockets/assets.rake:21:in `invoke_or_reboot_rake_task'

path/to/app/production/shared/bundle/ruby/1.9.1/gems/actionpack-3.2.11/lib/sprockets/assets.rake:29:in `block (2 levels) in <top (required)>'

path/to/app/production/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/task.rb:228:in `call'

path/to/app/production/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/task.rb:228:in `block in execute'

path/to/app/production/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/task.rb:223:in `each'

path/to/app/production/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/task.rb:223:in `execute'

path/to/app/production/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/task.rb:166:in `block in invoke_with_call_chain'

/home/user/.rvm/rubies/ruby-1.9.3-p374/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'

path/to/app/production/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/task.rb:159:in `invoke_with_call_chain'

path/to/app/production/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/task.rb:152:in `invoke'

path/to/app/production/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:143:in `invoke_task'

path/to/app/production/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:101:in `block (2 levels) in top_level'

path/to/app/production/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:101:in `each'

path/to/app/production/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:101:in `block in top_level'

path/to/app/production/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:110:in `run_with_threads'

path/to/app/production/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:95:in `top_level'

path/to/app/production/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:73:in `block in run'

path/to/app/production/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:160:in `standard_exception_handling'

path/to/app/production/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:70:in `run'

path/to/app/production/shared/bundle/ruby/1.9.1/gems/rake-10.0.3/bin/rake:33:in `<top (required)>'

path/to/app/production/shared/bundle/ruby/1.9.1/bin/rake:23:in `load'

path/to/app/production/shared/bundle/ruby/1.9.1/bin/rake:23:in `<main>'

Tasks: TOP => assets:precompile

这不会发生在暂存目录中。我感觉它在盯着我的脸

所以我认为我们的问题是 bootstrap-sass 是资产预编译的一部分。所以它炸毁了所有的CSS，然后将其全部编译下来。当它与大量 sass/css 结合使用时，该进程会使用大量内存，并且操作系统会杀死它。经过大量研究，我找到了一个相当不错的解决方案。本地编译，压缩，上传，在服务器上解压，在服务器上符号链接，然后删除所有创建的额外文件（本地资源/压缩文件）。

这是脚本

namespace :deploy do
  namespace :assets do

    task :precompile, :roles => :web do
      from = source.next_revision(current_revision)
      if capture("cd #{latest_release} && #{source.local.log(from)} vendor/assets/ lib/assets/ app/assets/ | wc -l").to_i > 0
        run_locally("RAILS_ENV=#{rails_env} rake assets:clean && RAILS_ENV=#{rails_env} rake assets:precompile")
        run_locally "cd public && tar -jcf assets.tar.bz2 assets"
        top.upload "public/assets.tar.bz2", "#{shared_path}", :via => :scp
        run "cd #{shared_path} && tar -jxf assets.tar.bz2 && rm assets.tar.bz2"
        run_locally "rm public/assets.tar.bz2"
        run_locally("rake assets:clean")
      else
        logger.info "Skipping asset precompilation because there were no asset changes"
      end
    end

    task :symlink, roles: :web do
      run ("rm -rf #{latest_release}/public/assets &&
            mkdir -p #{latest_release}/public &&
            mkdir -p #{shared_path}/assets &&
            ln -s #{shared_path}/assets #{latest_release}/public/assets")
    end
  end

  # other stuff...

end

Here's 我在哪里找到脚本的 http://www.rostamizadeh.net/blog/2012/04/14/precompiling-assets-locally-for-capistrano-deployment。它提供了更好的解释

Edit:

较新的 Rails 部署存在问题。我不确定确切的版本，但它似乎会影响 Rails 4。资产需要指定它们正在编译的环境，否则生产/登台环境将找不到它们。