Cap deploy：setup卡在sftp命令上(使用Simone Carletti的source.yml配方)

Question

我正在使用capistrano部署我的rails 3应用程序，但我无法弄清楚为什么在cap部署：setup任务期间的某个时候命令行正在等待sftp命令。

我搜索了发送此命令的配方以了解，但找不到它。

作为旁注，我正在使用Simon Carlett的配方来生成database.yml文件，而不是在github上存储和获取它）。

这是我的输出：

/var/www/odpf/config$ cap deploy:setup
    triggering load callbacks
  * 2014-01-07 09:03:03 executing `deploy:setup'
  * executing "mkdir -p /var/www/odpf /var/www/odpf/releases /var/www/odpf/shared /var/www/odpf/shared/system /var/www/odpf/shared/log /var/www/odpf/shared/pids"
    servers: ["*****"]
Enter passphrase for /home/me/.ssh/id_rsa: 
    [*****] executing command
 ** [out :: *****]
    command finished in 355ms
    triggering after callbacks for `deploy:setup'
  * 2014-01-07 09:03:12 executing `deploy:db:setup'
  * executing "mkdir -p /var/www/odpf/shared/db"
    servers: ["*****"]
    [*****] executing command
 ** [out :: *****]
    command finished in 350ms
  * executing "mkdir -p /var/www/odpf/shared/config"
    servers: ["*****"]
    [*****] executing command
 ** [out :: *****]
    command finished in 350ms
    servers: ["*****"]
 ** sftp upload #<StringIO:0x000000010579f8> -> /var/www/odpf/shared/config/database.yml

在最后一条指令之后，命令行似乎无限等待......我按 CTRL+C 并输出一些红宝石错误：

^C/home/me/.rvm/gems/ruby-2.1.0@rails3/gems/capistrano-2.15.5/lib/capistrano/processable.rb:25:in `select': Interrupt
etc...

我在第 25 行附近查看了这个文件，发现这个：

  21> readers = sessions.map { |session| session.listeners.keys }.flatten.reject { |io| io.closed? }
  22> writers = readers.select { |io| io.respond_to?(:pending_write?) && io.pending_write? }
  23>
  24> if readers.any? || writers.any?
  25>   readers, writers, = IO.select(readers, writers, nil, wait)
  26> else
  27>   return false
  28> end

这是西蒙娜·卡莱蒂的食谱：

#
# = Capistrano database.yml task
#
# Provides a couple of tasks for creating the database.yml
# configuration file dynamically when deploy:setup is run.
#
# Category::    Capistrano
# Package::     Database
# Author::      Simone Carletti
# Copyright::   2007-2009 The Authors
# License::     MIT License
# Link::        http://www.simonecarletti.com/
# Source::      http://gist.github.com/2769
#
#
unless Capistrano::Configuration.respond_to?(:instance)
  abort "This extension requires Capistrano 2"
end
Capistrano::Configuration.instance.load do
  namespace :db do
    desc <<-DESC
      Creates the database.yml configuration file in shared path.
      By default, this task uses a template unless a template
      called database.yml.erb is found either is :template_dir
      or /config/deploy folders. The default template matches
      the template for config/database.yml file shipped with Rails.
      When this recipe is loaded, db:setup is automatically configured
      to be invoked after deploy:setup. You can skip this task setting
      the variable :skip_db_setup to true. This is especially useful
      if you are using this recipe in combination with
      capistrano-ext/multistaging to avoid multiple db:setup calls
      when running deploy:setup for all stages one by one.
    DESC
    task :setup, :except => { :no_release => true } do
      default_template = <<-EOF
      base: &base
        adapter: sqlite3
        timeout: 5000
      development:
        database: #{shared_path}/db/development.sqlite3
        <<: *base
      test:
        database: #{shared_path}/db/test.sqlite3
        <<: *base
      production:
        database: #{shared_path}/db/production.sqlite3
        <<: *base
      EOF
      location = fetch(:template_dir, "config/deploy") + '/database.yml.erb'
      template = File.file?(location) ? File.read(location) : default_template
      config = ERB.new(template)
      run "mkdir -p #{shared_path}/db"
      run "mkdir -p #{shared_path}/config"
      put config.result(binding), "#{shared_path}/config/database.yml"
    end
    desc <<-DESC
      [internal] Updates the symlink for database.yml file to the just deployed release.
    DESC
    task :symlink, :except => { :no_release => true } do
      run "ln -nfs #{shared_path}/config/database.yml #{release_path}/config/database.yml"
    end
  end
  after "deploy:setup",           "db:setup"   unless fetch(:skip_db_setup, false)
  after "deploy:finalize_update", "db:symlink"
end

任何帮助将不胜感激。

谢谢

Answer 1

经过长时间的搜索，我决定升级到Capistrano 3.x，认为也许它会解决我的问题，因为它使用ssh-kit而不是sftp。

它没有解决这个问题。

我打开了一个链接到Capistrano 3.x的新问题并找到了解决方案。

这可能也是Capistrano 2.x的解决方案，尽管我没有测试它。所以我在这里发布这个可能的解决方案，以防有人有兴趣测试它。

事实上，在Capistrano 3.x中，问题与自2000年以来一直被窃听的net-scp有关。所以也许sftp的工作方式与net-scp相同。

问题来自我的.bashrc文件（以及我输入的echo命令），该文件在ssh连接（非登录，非交互式）期间执行。更多信息在这里

如果有人成功测试，请告诉我们。

我在这方面的几分钱。