ruby-on-rails - capistrano - NameError:未初始化的常量 Net::SSH::KnownHosts::SUPPORTED_TYPE

Question

我正在尝试将我的 Rails (3.1.3) 应用程序部署到预生产环境。我使用 capistrano (2.12.0) 和 rvm-capistrano (1.2.2)。

当我调用 bundle exec cap ssh 时，它工作正常。但是当我调用 bundle exec cap deploy 时，我得到以下跟踪:

$ cap deploy
    triggering start callbacks for `deploy'
  * 18:42:19 == Currently executing `multistage:ensure'
*** Defaulting to `preprod'
  * 18:42:19 == Currently executing `preprod'
  * 18:42:19 == Currently executing `deploy'
  * 18:42:19 == Currently executing `deploy:update'
 ** transaction: start
  * 18:42:19 == Currently executing `deploy:update_code'
  * 18:42:19 == Currently executing `deploy:set_previous_revision'
  * executing "cd /rails_apps/com.example.preprod/current; git rev-parse --short HEAD"
    servers: ["preprod.example.com"]
connection failed for: preprod.example.com (NameError: uninitialized constant Net::SSH::KnownHosts::SUPPORTED_TYPE)

当然 example.com 是一个占位符，它不是来自 capistrano 配置中的错误。

知道是什么原因造成的吗？

我将 RVM 与 Ruby 1.9.3-p194 结合使用。

谢谢!

Answer 1

从 net-ssh 2.5.1 恢复到 2.4.0 似乎暂时解决了这个问题。