ruby-on-rails – 部署失败并出现错误：#

概述我将把rails app部署到数字海洋. 我按照这个 https://gorails.com/deploy/ubuntu/14.04的教程 然后我在本地命令提示符下运行命令进行部署. # cap production deploy 运行该命令后,我收到以下错误. /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/capistran 我将把rails app部署到数字海洋.
我按照这个 https://gorails.com/deploy/ubuntu/14.04的教程
然后我在本地命令提示符下运行命令进行部署.

# cap production deploy

运行该命令后,我收到以下错误.

/Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/cAPIstrano-3.1.0/lib/cAPIstrano/i18n.rb:4: warning: duplicated key at line 6 ignored: :starting    ** Invoke production (first_time)    ** Execute production    ** Invoke load:defaults (first_time)    ** Execute load:defaults    ** Invoke bundler:map_bins (first_time)    ** Execute bundler:map_bins    ** Invoke deploy:set_rails_env (first_time)    ** Execute deploy:set_rails_env    ** Invoke deploy:set_linked_dirs (first_time)    ** Execute deploy:set_linked_dirs    ** Invoke deploy:set_rails_env     ** Invoke deploy (first_time)    ** Execute deploy    ** Invoke deploy:starting (first_time)    ** Execute deploy:starting    ** Invoke deploy:check (first_time)    ** Execute deploy:check    ** Invoke git:check (first_time)    ** Invoke git:wrapper (first_time)    ** Execute git:wrapper    cap aborted!    NoMethodError: undefined method `on' for main:Object    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/cAPIstrano-3.1.0/lib/cAPIstrano/tasks/git.rake:16:in `block (2 levels) in <top (required)>'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/task.rb:248:in `call'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/task.rb:248:in `block in execute'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/task.rb:243:in `each'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/task.rb:243:in `execute'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/task.rb:187:in `block in invoke_with_call_chain'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/2.2.0/monitor.rb:211:in `mon_synchronize'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/task.rb:180:in `invoke_with_call_chain'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/task.rb:209:in `block in invoke_prerequisites'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/task.rb:207:in `each'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/task.rb:207:in `invoke_prerequisites'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/task.rb:186:in `block in invoke_with_call_chain'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/2.2.0/monitor.rb:211:in `mon_synchronize'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/task.rb:180:in `invoke_with_call_chain'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/task.rb:173:in `invoke'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/cAPIstrano-3.1.0/lib/cAPIstrano/dsl.rb:14:in `invoke'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/cAPIstrano-3.1.0/lib/cAPIstrano/tasks/deploy.rake:34:in `block (2 levels) in <top (required)>'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/task.rb:248:in `call'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/task.rb:248:in `block in execute'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/task.rb:243:in `each'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/task.rb:243:in `execute'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/task.rb:187:in `block in invoke_with_call_chain'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/2.2.0/monitor.rb:211:in `mon_synchronize'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/task.rb:180:in `invoke_with_call_chain'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/task.rb:173:in `invoke'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/cAPIstrano-3.1.0/lib/cAPIstrano/dsl.rb:14:in `invoke'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/cAPIstrano-3.1.0/lib/cAPIstrano/tasks/deploy.rake:4:in `block (2 levels) in <top (required)>'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/task.rb:248:in `call'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/task.rb:248:in `block in execute'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/task.rb:243:in `each'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/task.rb:243:in `execute'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/task.rb:187:in `block in invoke_with_call_chain'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/2.2.0/monitor.rb:211:in `mon_synchronize'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/task.rb:180:in `invoke_with_call_chain'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/task.rb:173:in `invoke'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/cAPIstrano-3.1.0/lib/cAPIstrano/dsl.rb:14:in `invoke'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/cAPIstrano-3.1.0/lib/cAPIstrano/tasks/framework.rake:65:in `block (2 levels) in <top (required)>'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/cAPIstrano-3.1.0/lib/cAPIstrano/tasks/framework.rake:64:in `each'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/cAPIstrano-3.1.0/lib/cAPIstrano/tasks/framework.rake:64:in `block in <top (required)>'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/task.rb:248:in `call'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/task.rb:248:in `block in execute'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/task.rb:243:in `each'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/task.rb:243:in `execute'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/task.rb:187:in `block in invoke_with_call_chain'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/2.2.0/monitor.rb:211:in `mon_synchronize'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/task.rb:180:in `invoke_with_call_chain'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/task.rb:173:in `invoke'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/application.rb:150:in `invoke_task'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/application.rb:106:in `block (2 levels) in top_level'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/application.rb:106:in `each'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/application.rb:106:in `block in top_level'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/application.rb:115:in `run_with_threads'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/application.rb:100:in `top_level'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/application.rb:78:in `block in run'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/application.rb:176:in `standard_exception_handling'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-11.1.1/lib/rake/application.rb:75:in `run'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/cAPIstrano-3.1.0/lib/cAPIstrano/application.rb:15:in `run'    /Users/llvc/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/cAPIstrano-3.1.0/bin/cap:3:in `<top (required)>'    /Users/llvc/.rbenv/versions/2.2.3/bin/cap:23:in `load'    /Users/llvc/.rbenv/versions/2.2.3/bin/cap:23:in `<main>'    Tasks: top => git:check => git:wrapper    The deploy has Failed with an error: #<NoMethodError: undefined method `on' for main:Object>    ** Invoke deploy:Failed (first_time)    ** Execute deploy:Failed

我从stackoverflow.NoMethodError: undefined method `on’ for main:Object中发现了类似的问题
但解决方案无法帮助我.
我需要专家的额外帮助.
谢谢.斤

解决方法 更改：

gem 'cAPIstrano','~> 3.1.0'gem 'cAPIstrano-bundler','~> 1.1.2'gem 'cAPIstrano-rails','~> 1.1.1'

至：

gem 'cAPIstrano','~>3.5.0'gem 'cAPIstrano-bundler','~> 1.1.3'gem 'cAPIstrano-rails','~> 1.1.7'

如果在/config/deploy.rb中有：

lock '3.1.0'

改成：

lock '3.5.0'

并运行：

bundle updatebundle install

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