尝试使用Capistrano 3和rbenv安装Rails应用程序 [英] Trying to install a rails app with Capistrano 3 and rbenv

问题描述

我有一个安装了Ruby 2.1.1的VPS设置，并且本地安装了相同版本。我的运行14.04 Ubuntu的开发机报告ruby -v = ruby​​ 2.1.1p76（2014-02-24修订版45161）[x86_64-linux]和rbenv -v = rbenv 0.4.0-97-gfe0b243。

I have a VPS setup with Ruby 2.1.1 installed and the same version is installed locally. My dev machine running 14.04 Ubuntu reports ruby -v = ruby 2.1.1p76 (2014-02-24 revision 45161) [x86_64-linux] and rbenv -v = rbenv 0.4.0-97-gfe0b243.

我本来是用刀单刀在服务器上安装ruby的，但是好像capistrano想要解决这个问题。

I originally installed ruby on the server using knife solo but it seems like capistrano wants to take care of this.

当我运行cap分期操作时部署我收到错误

When I run cap staging deploy I get an error

rbenv: cap: command not found
The `cap' command exists in these Ruby versions:  2.1.0

Gemfile

group :development do
 gem 'capistrano', github: 'capistrano/capistrano', ref: 'master'
 gem 'capistrano-rails', github: 'capistrano/rails', ref: 'master'
 gem 'capistrano-bundler'
 gem 'capistrano-rbenv', "~> 2.0"
end

Capfile

require 'capistrano/setup'
require 'capistrano/deploy'
require 'capistrano/rbenv'
require 'capistrano/bundler'
require 'capistrano/rails/assets'
require 'capistrano/rails/migrations'

deploy.rb

deploy.rb

set :rbenv_type, :system
set :rbenv_ruby, '2.1.1'
set :rbenv_prefix, "RBENV_ROOT=#{fetch(:rbenv_path)} RBENV_VERSION=#{fetch(:rbenv_ruby)} #{fetch(:rbenv_path)}/bin/rbenv exec"
set :rbenv_map_bins, %w{rake gem bundle ruby rails}
set :rbenv_roles, :all # default value

gem env

RubyGems Environment:
  - RUBYGEMS VERSION: 2.2.2
  - RUBY VERSION: 2.1.1 (2014-02-24 patchlevel 76) [x86_64-linux]
  - INSTALLATION DIRECTORY: /home/mark/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0
  - RUBY EXECUTABLE: /home/mark/.rbenv/versions/2.1.1/bin/ruby
  - EXECUTABLE DIRECTORY: /home/mark/.rbenv/versions/2.1.1/bin
  - SPEC CACHE DIRECTORY: /home/mark/.gem/specs
  - RUBYGEMS PLATFORMS:
    - ruby
    - x86_64-linux
  - GEM PATHS:
     - /home/mark/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0
     - /home/mark/.gem/ruby/2.1.0
  - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :backtrace => false
     - :bulk_threshold => 1000
     - "gem" => "--no-ri --no-rdoc"
  - REMOTE SOURCES:
     - https://rubygems.org/
  - SHELL PATH:
     - /home/mark/.rbenv/versions/2.1.1/bin

推荐答案

长期以来一直在为这个问题而苦苦挣扎。 @Darmen的回答为我指明了正确的方向：

Was also struggling with this problem for a long time. @Darmen's answer pointed me into the right direction:

1）在Capfile中设置rbenv的路径。对于Capistrano 3.2.1，这是：

1) Set the path for rbenv in Capfile. For Capistrano 3.2.1, this is:

set :rbenv_custom_path, '/home/deploy/.rbenv/'

请注意（也许很明显）它必须是服务器上的路径，请使用以下命令找到它：

Note (maybe obvious) that it has to be the path on the server, find it with:

which rbenv

（比较rbenv_custom_path语法的 https://github.com/capistrano/rbenv -与@Darmen的答案稍有不同）

(compare https://github.com/capistrano/rbenv for rbenv_custom_path syntax - slightly different from @Darmen's answer)

2）在capfile中设置正确的rbenv版本，例如

2) Set the correct rbenv version in capfile, e.g.,

set :rbenv_ruby, '2.1.2'

对我来说，我不必使用完整的红宝石版本。它必须与/.rbenv/versions中的目录名称匹配

For me, I did not have to use the complete ruby version. It has to match the directory name in /.rbenv/versions

希望有帮助-我花了很长时间...;-）

Hope that helps - took me ages... ;-)

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