用于Capistrano的rvmsudo开关？

Question

这类似于：

Using rvmsudo with Capistrano

我想知道在rvm/capistrano中是否有一个特定的开关来启用rvmsudo。如果没有它，我会得到如下错误：

* executing "cd /home/Blog/releases/20110826194116 && bundle install --gemfile /home/Blog/releases/20110826194116/Gemfile --path /home/Blog/shared/bundle --deployment --quiet --without development test"
    servers: ["199.168.0.1"]
    [199.168.0.1] executing command
*** [err :: 199.168.0.1] /usr/local/rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/installer.rb:551:in `rescue in block in build_extensions': ERROR: Failed to build gem native extension. (Gem::Installer::ExtensionBuildError)
*** [err :: 199.168.0.1] 
*** [err :: 199.168.0.1] /usr/local/rvm/rubies/ruby-1.9.2-p290/bin/ruby extconf.rb
*** [err :: 199.168.0.1] creating Makefile
*** [err :: 199.168.0.1] 
*** [err :: 199.168.0.1] make
*** [err :: 199.168.0.1] sh: make: Permission denied

Answer 1

我认为您可以像这样使用rvm环境变量作为部署的一部分：

set :rvm_ruby_string, 'ruby-1.9.2-p290@some_gemset'
set :rvm_type, :user

那么RVM命令的作用域就是这个gemset和用户。