为什么Capistrano 2拒绝cap deploy: cap deploy:setup成功？

Question

我正在尝试使用Capistrano (2.5.19)部署一个Rails3应用程序。我已经成功运行：

cap deploy:setup

并且在服务器上创建了正确的目录。但是，当我运行cap deploy:cold或cap deploy时，脚本在中途挂起。

    shell$ cap deploy:cold
  * executing `deploy:cold'
  * executing `deploy:update'
 ** transaction: start
  * executing `deploy:update_code'
    executing locally: "git ls-remote git@server.foo.com:test.git master"
  * executing "git clone -q git@server.foo.com:test.git /home/deployer/www/apps/test/releases/20101223162936 && cd /home/deployer/www/apps/test/releases/20101223162936 && git checkout -q -b deploy be3165b74d52540742873c125fb85d04e1ee3063 && git submodule -q init && git submodule -q sync && git submodule -q update && (echo be3165b74d52540742873c125fb85d04e1ee3063 > /home/deployer/www/apps/test/releases/20101223162936/REVISION)"
    servers: ["server.foo.com"]
    [server.foo.com] executing command

这是我的deploy.rb：

$:.unshift(File.expand_path("~/.rvm/lib"))
    require 'rvm/capistrano'
    set :rvm_ruby_string, 'jruby'

    # main details
    set :application, "test_sqlserver"
    role :web, "server.foo.com"
    role :app, "server.foo.com"
    role :db,  "server.foo.com", :primary => true

    # server details
    default_run_options[:pty] = true
    ssh_options[:forward_agent] = true
    set :deploy_to, "/home/deployer/www/apps/#{application}"
    set :deploy_via, :checkout
    set :user, :deployer
    set :use_sudo, false

    # repo details
    set :scm, :git
    set :repository, "git@server.foo.com:test.git"
    set :branch, "master"
    set :git_enable_submodules, 1

我相信我的文件权限设置正确

Answer 1

至少从1.6.5开始，JRuby中似乎存在一个错误--请参阅SSH Agent forwarding does not work with jRuby (which lets capistrano ssh-deployments fail)

显然，一种“解决办法”是不使用SSH代理转发，尽管这可能是不可接受的。如果你想让这个问题更快地被发现和修复(我知道我是这样做的)，观察这个问题可能会有所帮助。

Answer 2

看起来你不能在jruby下运行Capistrano，因为jruby-openssl不支持Net:SSH。

http://jruby-extras.rubyforge.org/jruby-openssl/