如果我运行rails s
/Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:251:in `require': cannot load such file -- net/ssh/authentication/agent/socket (LoadError)
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:251:in `block in require'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:236:in `load_dependency'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:251:in `require'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/net-ssh-2.5.0/lib/net/ssh/authentication/agent.rb:22:in `<top (required)>'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:251:in `require'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:251:in `block in require'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:236:in `load_dependency'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:251:in `require'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/net-ssh-2.5.0/lib/net/ssh/authentication/key_manager.rb:4:in `<top (required)>'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:251:in `require'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:251:in `block in require'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:236:in `load_dependency'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:251:in `require'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/net-ssh-2.5.0/lib/net/ssh/authentication/session.rb:4:in `<top (required)>'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:251:in `require'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:251:in `block in require'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:236:in `load_dependency'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:251:in `require'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/net-ssh-2.5.0/lib/net/ssh.rb:11:in `<top (required)>'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:251:in `require'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:251:in `block in require'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:236:in `load_dependency'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:251:in `require'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/net-ssh-gateway-1.1.0/lib/net/ssh/gateway.rb:2:in `<top (required)>'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:251:in `require'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:251:in `block in require'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:236:in `load_dependency'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:251:in `require'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/capistrano-2.12.0/lib/capistrano/configuration/connections.rb:2:in `<top (required)>'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:251:in `require'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:251:in `block in require'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:236:in `load_dependency'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:251:in `require'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/capistrano-2.12.0/lib/capistrano/configuration.rb:5:in `<top (required)>'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:251:in `require'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:251:in `block in require'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:236:in `load_dependency'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:251:in `require'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/capistrano-2.12.0/lib/capistrano.rb:3:in `<top (required)>'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0@global/gems/bundler-1.1.3/lib/bundler/runtime.rb:68:in `require'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0@global/gems/bundler-1.1.3/lib/bundler/runtime.rb:68:in `block (2 levels) in require'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0@global/gems/bundler-1.1.3/lib/bundler/runtime.rb:66:in `each'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0@global/gems/bundler-1.1.3/lib/bundler/runtime.rb:66:in `block in require'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0@global/gems/bundler-1.1.3/lib/bundler/runtime.rb:55:in `each'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0@global/gems/bundler-1.1.3/lib/bundler/runtime.rb:55:in `require'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0@global/gems/bundler-1.1.3/lib/bundler.rb:119:in `require'
from /Users/frankie/projects/unitedfreelance/config/application.rb:13:in `<top (required)>'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.0/lib/rails/commands.rb:53:in `require'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.0/lib/rails/commands.rb:53:in `block in <top (required)>'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.0/lib/rails/commands.rb:50:in `tap'
from /Users/frankie/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.0/lib/rails/commands.rb:50:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'
的Gemfile
source 'http://rubygems.org'
gem 'rails', '3.2.0'
# Bundle edge Rails instead:
# gem 'rails', :git => 'git://github.com/rails/rails.git'
gem 'pg'
gem "cocoon"
gem 'nokogiri'
gem 'hpricot'
gem "formtastic", "~> 2.1.1"
gem "activeadmin", "~> 0.4.4"
gem 'omniauth'
gem 'country-select'
gem "paperclip", "~> 3.0"
gem 'cancan'
gem 'rolify'
gem "meta_search", '>= 1.1.0.pre'
gem 'bourbon', "~> 2.0.0.rc1"
gem "rails-boilerplate"
gem 'geocoder'
gem 'httparty'
gem 'hashie'
gem 'will_paginate', :git => "git://github.com/mislav/will_paginate.git"
gem 'thinking-sphinx', '2.0.10'
gem 'sanitize'
gem 'feedzirra'
gem "crypt19", "~> 1.2.1"
gem 'wicked_pdf'
gem 'forem', :git => "git://github.com/radar/forem.git"
gem 'thin'
gem 'whenever', :require => false
gem "ckeditor", "3.7.1"
# gem 'sisow'
# Gems used only for assets and not required
# in production environments by default.
group :assets do
gem 'sass-rails', '~> 3.2.3'
gem 'coffee-rails', '~> 3.2.1'
gem 'uglifier', '>= 1.0.3'
end
gem 'haml-rails'
gem 'jquery-rails'
group :development do
gem 'ruby_parser'
end
# To use ActiveModel has_secure_password
# gem 'bcrypt-ruby', '~> 3.0.0'
# Use unicorn as the web server
gem 'unicorn'
# Deploy with Capistrano
gem 'capistrano'
# To use debugger
# gem 'ruby-debug19', :require => 'ruby-debug'
一秒钟它起作用，下一个它不起作用。
在我尝试按照本指南修复CKeditor集成后，我停止了工作： https://github.com/galetahub/ckeditor
更新
发生此错误是因为我使用的是Capistrano，并且该gem需要net-ssh。 net-ssh宝石已从2.4更新 - ＆gt; 2.5.0导致了这个问题。
更新了我的Gemfile：
gem 'rails', '3.2.0'
gem "net-ssh", "~> 2.4.0"
然后运行$ gem update net-ssh
rails s命令的错误消失了。尚未使用Capistrano进行部署，因此不能说使用部署是否存在错误。
更新2
Capistrano未能部署，因此搞砸了。使用cap deploy时，我会收到您在帖子开头看到的错误消息。
更新3
将net-ssh升级为2.5.1，因为在评论中有人提到2.5.0已被破坏。
升级后，需求问题已解决，但Capistrano仍然无法部署。
[deploy:update_code] exception while rolling back: Capistrano::ConnectionError, connection failed for: 85.xxx.xxx.xxx (NameError: uninitialized constant Net::SSH::KnownHosts::SUPPORTED_TYPE)
connection failed for: 85.xxx.xxx.xxx (NameError: uninitialized constant Net::SSH::KnownHosts::SUPPORTED_TYPE)
更新4（加上解决方法）
在下面的评论中发布了一种解决方法。
答案 0 :(得分：2)
降级到2.4.0允许rails s工作，但cap命令失败。
确保通过发出以下命令使用2.5.1：
bundle update net-ssh
您也可以将其添加到您的Gemfile：
gem "net-ssh", "~> 2.5.1"
答案 1 :(得分：1)
我认为这是capistrano gem中的一个错误。我刚刚为我的项目执行了bundle更新并且出现了同样的错误，但如果我从Gemfile中删除capistrano，一切都会正常工作。
UPD：Capistrano gem使用net-ssh gem，这是在1小时前更新的。
答案 2 :(得分：0)
Gem版本2.5.2为我解决了这个问题。