Capistrano 3.8.1从窗口部署

Question

我试图将我们的capistrano2脚本升级到最新的capistrano，但是努力让它工作。为了限制转换的任何问题，我开始了一个空的项目，并做了cap install。

添加了一个自定义任务以在本机上运行并试用它。同样的结果。

这是我发现了错误：Errno::ENOENT: No such file or directory - /usr/bin/env dir

精确操作的指令：

1）MKDIR capdemo

2）CD capdemo

3）盖安装

4 ）使用以下内容在lib/capistrano/tasks/foo.rake下创建文件：

namespace :foo do desc "Foo" task :local do run_locally do execute :dir end end end

5）运行cap staging foo:local

我在Windows 10，红宝石2.2.4和斯特拉努与Capistrano的执行与/usr/bin/env默认前缀3.8.1

```mr@MR-LAPTOP MINGW64 ~/inpay_git/capdemo 
$ cap staging foo:local -p --trace 
** Invoke staging (first_time) 
** Execute staging 
** Invoke load:defaults (first_time) 
** Execute load:defaults 
** Invoke foo:local (first_time) 
** Execute foo:local 
Config variable set: :print_config_variables => true 
Config variable set: :stage => :staging 
Config variable set: :scm => :"default-git" 
Config variable set: :branch => "master" 
Config variable set: :deploy_to => #<Proc:0x376d6a0@C:/Ruby/224/lib/ruby/gems/2.2.0/gems/capistrano-3.8.1/lib/capistrano/defaults.rb:25 (lambda)> 
Config variable set: :tmp_dir => "/tmp" 
Config variable set: :default_env => {} 
Config variable set: :keep_releases => 5 
Config variable set: :format => :airbrussh 
Config variable set: :log_level => :debug 
Config variable set: :pty => false 
Config variable set: :local_user => #<Proc:0x33c43f8@C:/Ruby/224/lib/ruby/gems/2.2.0/gems/capistrano-3.8.1/lib/capistrano/defaults.rb:36 (lambda)> 
Config variable set: :format => :airbrussh 
Config variable set: :git_shallow_clone => false 
Config variable set: :git_wrapper_path => #<Proc:0x3776310@C:/Ruby/224/lib/ruby/gems/2.2.0/gems/capistrano-3.8.1/lib/capistrano/scm/git.rb:9 (lambda)> 
Config variable set: :git_environmental_variables => #<Proc:0x3775d10@C:/Ruby/224/lib/ruby/gems/2.2.0/gems/capistrano-3.8.1/lib/capistrano/scm/git.rb:15 (lambda)> 
Config variable set: :application => "my_app_name" 
Config variable set: :repo_url => "git@example.com:me/my_repo.git" 
Config variable set: :scm => :git 
00:00 foo:local 
     01 dir 
cap aborted! 
Errno::ENOENT: No such file or directory - /usr/bin/env dir 
C:/Ruby/224/lib/ruby/2.2.0/open3.rb:193:in `spawn' 
C:/Ruby/224/lib/ruby/2.2.0/open3.rb:193:in `popen_run' 
C:/Ruby/224/lib/ruby/2.2.0/open3.rb:93:in `popen3' 
C:/Ruby/224/lib/ruby/gems/2.2.0/gems/sshkit-1.13.1/lib/sshkit/backends/local.rb:44:in `execute_command' 
C:/Ruby/224/lib/ruby/gems/2.2.0/gems/sshkit-1.13.1/lib/sshkit/backends/abstract.rb:141:in `block in create_command_and_execute' 
C:/Ruby/224/lib/ruby/gems/2.2.0/gems/sshkit-1.13.1/lib/sshkit/backends/abstract.rb:141:in `tap' 
C:/Ruby/224/lib/ruby/gems/2.2.0/gems/sshkit-1.13.1/lib/sshkit/backends/abstract.rb:141:in `create_command_and_execute' 
C:/Ruby/224/lib/ruby/gems/2.2.0/gems/sshkit-1.13.1/lib/sshkit/backends/abstract.rb:74:in `execute' 
C:/Users/mr/inpay_git/capdemo/lib/capistrano/tasks/foo.rake:5:in `block (3 levels) in <top (required)>' 
C:/Ruby/224/lib/ruby/gems/2.2.0/gems/sshkit-1.13.1/lib/sshkit/backends/abstract.rb:29:in `instance_exec' 
C:/Ruby/224/lib/ruby/gems/2.2.0/gems/sshkit-1.13.1/lib/sshkit/backends/abstract.rb:29:in `run' 
C:/Ruby/224/lib/ruby/gems/2.2.0/gems/capistrano-3.8.1/lib/capistrano/dsl.rb:70:in `run_locally' 
C:/Users/mr/inpay_git/capdemo/lib/capistrano/tasks/foo.rake:4:in `block (2 levels) in <top (required)>' 
C:/Ruby/224/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/task.rb:250:in `call' 
C:/Ruby/224/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/task.rb:250:in `block in execute' 
C:/Ruby/224/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/task.rb:250:in `each' 
C:/Ruby/224/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/task.rb:250:in `execute' 
C:/Ruby/224/lib/ruby/gems/2.2.0/gems/airbrussh-1.2.0/lib/airbrussh/rake/context.rb:62:in `execute' 
C:/Ruby/224/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/task.rb:194:in `block in invoke_with_call_chain' 
C:/Ruby/224/lib/ruby/2.2.0/monitor.rb:211:in `mon_synchronize' 
C:/Ruby/224/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/task.rb:187:in `invoke_with_call_chain' 
C:/Ruby/224/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/task.rb:180:in `invoke' 
C:/Ruby/224/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/application.rb:152:in `invoke_task' 
C:/Ruby/224/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/application.rb:108:in `block (2 levels) in top_level' 
C:/Ruby/224/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/application.rb:108:in `each' 
C:/Ruby/224/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/application.rb:108:in `block in top_level' 
C:/Ruby/224/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/application.rb:117:in `run_with_threads' 
C:/Ruby/224/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/application.rb:102:in `top_level' 
C:/Ruby/224/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/application.rb:80:in `block in run' 
C:/Ruby/224/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/application.rb:178:in `standard_exception_handling' 
C:/Ruby/224/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/application.rb:77:in `run' 
C:/Ruby/224/lib/ruby/gems/2.2.0/gems/capistrano-3.8.1/lib/capistrano/application.rb:14:in `run' 
C:/Ruby/224/lib/ruby/gems/2.2.0/gems/capistrano-3.8.1/bin/cap:3:in `<top (required)>' 
C:/Ruby/224/bin/cap:22:in `load' 
C:/Ruby/224/bin/cap:22:in `<main>' 
Tasks: TOP => foo:local``` 

Answer 1

命令运行。如果您的系统上没有/usr/bin/env，则该命令将失败。我不熟悉Windows，所以我不知道这是不是一个难以克服的问题。

如果你想删除/usr/bin/env前缀，你可以修改Capistrano酒店的“命令映射”删除所有默认行为：

# In deploy.rb 
# NOT RECOMMENDED 
SSHKit.config.command_map = SSHKit::CommandMap.new({}) 

但是，这将影响到当地和远程命令，这是不可取的。同样，Capistrano假设你想在本地和远程环境中以相同的方式运行。

如果这些限制和解决方法过于严格，则不必使用run_locally。事实上，无论如何，Capistrano并没有很好地支持run_locally，并且维护者（包括我自己）discourage using it。相反，您可以使用Ruby的内置方法来运行本地命令，如system或back-ticks。

http://ruby-doc.org/core-2.4.1/Kernel.html#method-i-system

http://ruby-doc.org/core-2.4.1/Kernel.html#method-i-60