为什么Capistrano从/ usr / bin / env而不是/usr/local/rvm/gems/ruby-2.1.0/bin/rake执行'rake'？

当我执行cap 生产环境 部署Capistrano的任务时，它尝试从/ usr / bin / env执行rake但我的gem安装到/usr/local/rvm/gems/ruby-2.1.0/bin/rake！

Versions: Ruby 2.1 / Capistrano 3.0.1 / Rake 10.1.1 / Rails 3.2.16 / rvm 1.25.12

我在myserver上使用rvm来促进ruby安装，但我用用户rvm_admin手动安装和更改了gem . rvm已安装'系统范围' . 我不使用capistrano-rvm而且我不使用capistrano-rails，因为我手动更新了ruby，gem，assets和migrations .

Platform: 使用XUbuntu 12.04.4 LTS部署到Debian Wheezy

Files:

Capfile

require 'capistrano/setup'
require 'capistrano/deploy'
Dir.glob('lib/capistrano/tasks/*.cap').each { |r| import r }
deploy.rb
set :application, 'odpf'
set :repo_url, 'git@github.com:myrepo/myapp.git'
set :branch, 'production_1.01'
set :deploy_to, '/var/www/odpf'
set :pty, false
set :scm, :git
set :format, :pretty


namespace :deploy do
  desc 'Restart application'
  task :restart do
    on roles(:app), in: :sequence, wait: 5 do
      # Your restart mechanism here, for example:
      # l'exemple correspond à ce qu'il faut pour restart passenger :
      # http://www.modrails.com/documentation/Users%20guide%20Apache.html#_redeploying_restarting_the_ruby_on_rails_application
      execute :mkdir, '-p', "#{release_path}/tmp"
      execute :touch, release_path.join('tmp/restart.txt')
    end
  end


  after :restart, :clear_cache do
    on roles(:web), in: :groups, limit: 3, wait: 10 do
      # Here we can do anything such as:
      # Conformément à : http://guides.rubyonrails.org/v3.2.14/command_line.html#tmp
      within release_path do
        execute :rake, 'tmp:cache:clear'
      end
    end
  end

  # Create symlink to database.yml after publication
  before 'deploy:published', 'db_access:create_symlinks'

  after :finishing, 'deploy:cleanup'
end

Stage files (production.rb, staging.rb)

set :stage, :production
server 'myserver.net', user: 'rvm_admin', roles: %w{web app db}
set :ssh_options, { forward_agent: true, port: 8888 }

当我执行一个 cap production deploy 时，它会在输出结束时直到soem点：

INFO [0a0dbcb0] Running /usr/bin/env rake tmp:cache:clear on myserver.net
DEBUG [0a0dbcb0] Command: cd /var/www/odpf/releases/20140129101515 && /usr/bin/env rake tmp:cache:clear
DEBUG [0a0dbcb0] /usr/bin/env: rake
DEBUG [0a0dbcb0] : Aucun fichier ou dossier de ce type
cap aborted!
rake stdout: Nothing written
rake stderr: Nothing written
/home/douglas/.rvm/gems/ruby-2.1.0@rails3/gems/sshkit-1.0.0/lib/sshkit/command.rb:94:in `exit_status='
/home/douglas/.rvm/gems/ruby-2.1.0@rails3/gems/sshkit-1.0.0/lib/sshkit/backends/netssh.rb:125:in `block (4 levels) in _execute'
/home/douglas/.rvm/gems/ruby-2.1.0@rails3/gems/net-ssh-2.7.0/lib/net/ssh/connection/channel.rb:551:in `call'

Capistrano尝试从 /usr/bin/env 执行rake但我的gem安装在这里：

rvm_admin@myserver:/var/www/odpf/current$ bundle show rake
/usr/local/rvm/gems/ruby-2.1.0/gems/rake-10.1.1
rvm_admin@myserver:/var/www/odpf/current$ which rake
/usr/local/rvm/gems/ruby-2.1.0/bin/rake

我究竟做错了什么 ？