如何在 Capistrano v3 的服务器上运行 shell 命令? [英] How to run shell commands on server in Capistrano v3?

问题描述

我是 Capistrano 的新手，我尝试过使用 Capistrano 的 DSL 在服务器上运行 shell 命令(运行"、执行"等)，但它似乎已被弃用.在搜索和搜索功能等效项之后，我仍然迷路了.

I'm new to Capistrano and I've tried using Capistrano's DSL to run shell commands on the server ('run', 'execute', etc.), but it appears that it was deprecated. After searching and searching for a functional equivalent, I still am lost.

当前代码:

desc 'Do something'
task :do_something
  execute 'echo sometext'
end

输出:

    cap aborted!
    undefined method `execute' for main:Object
    /Users/Justin/Dropbox/xxxx/xxxx/xxxx/Capfile:45:in `block (2 levels) in <top (required)>'
    /Users/Justin/.rvm/gems/ruby-2.0.0-p247/bundler/gems/capistrano-2dc1627838f9/lib/capistrano/application.rb:12:in `run'
    /Users/Justin/.rvm/gems/ruby-2.0.0-p247/bundler/gems/capistrano-2dc1627838f9/bin/cap:3:in `<top (required)>'
    /Users/Justin/.rvm/gems/ruby-2.0.0-p247/bin/cap:23:in `load'
    /Users/Justin/.rvm/gems/ruby-2.0.0-p247/bin/cap:23:in `<main>'
    /Users/Justin/.rvm/gems/ruby-2.0.0-p247/bin/ruby_noexec_wrapper:14:in `eval'
    /Users/Justin/.rvm/gems/ruby-2.0.0-p247/bin/ruby_noexec_wrapper:14:in `<main>'
    Tasks: TOP => deploy:do_something

推荐答案

在 Capistrano v3 中，您必须通过使用主机名列表调用 on 来指定要运行代码的位置，例如

In Capistrano v3, you must specify where you want to run the code by calling on with a list of hostnames, e.g.

task :execute_on_server do
  on "[e-mail]" do
    execute "some_command"
  end
end

如果您设置了角色，可以使用 roles 方法方便:

If you have roles set up, you can use the roles method as a convenience:

role :mailserver, "[e-mail]"

task :check_mail do
  on roles(:mailserver) do
    execute "some_command"
  end
end

这里有一些 v3 文档:http://www.capistranorb.com/

There is some v3 documentation here: http://www.capistranorb.com/

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