好像是 Ruby 环境出了点问题，mina deploy 到 bundle 的时候，会报错，提示安装 rake 10.4.2 服务器上默认 ruby version 是 2.1.3，gem list 中 rake version 默认是 10.4.2 项目下添加了.ruby-version 为什么会有环境问题…？到底是哪里出了问题…求指点迷津……

贴一下 config/deploy.rb

require 'mina/bundler'
require 'mina/rails'
require 'mina/git'
require 'mina/rbenv'  # for rbenv support. (http://rbenv.org)

set :domain, 'my_ip'
set :deploy_to, '/home/user/apps/project'
set :repository, 'git@my_git_address.git'
set :branch, 'dev'
set :rbenv_path, '/home/user/.rbenv'

# For system-wide RVM install.
#   set :rvm_path, '/usr/local/rvm/bin/rvm'

# Manually create these paths in shared/ (eg: shared/config/database.yml) in your server.
# They will be linked in the 'deploy:link_shared_paths' step.
set :shared_paths, ['config/settings.yml']

# Optional settings:
   set :user, 'deploy_user'    # Username in the server to SSH to.
   set :port, '22'     # SSH port number.

task :environment do
  queue %{export RBENV_ROOT=#{rbenv_path}}
  invoke :'rbenv:load'
end

task :setup => :environment do
  queue! %[mkdir -p "#{deploy_to}/#{shared_path}/log"]
  queue! %[chmod g+rx,u+rwx "#{deploy_to}/#{shared_path}/log"]

  queue! %[mkdir -p "#{deploy_to}/#{shared_path}/config"]
  queue! %[chmod g+rx,u+rwx "#{deploy_to}/#{shared_path}/config"]

  queue! %[touch "#{deploy_to}/#{shared_path}/config/settings.yml"]
  queue  %[echo "-----> Be sure to edit '#{deploy_to}/#{shared_path}/config/settings.yml'."]
end

desc "Deploys the current version to the server."
task :deploy => :environment do
  to :before_hook do
    # Put things to run locally before ssh
  end
  deploy do
    invoke :'git:clone'
    invoke :'deploy:link_shared_paths'
    invoke :'bundle:install'
    invoke :'rails:db_migrate'
    invoke :'rails:assets_precompile'
    invoke :'deploy:cleanup'

    to :launch do
      queue "touch tmp/restart.txt"
    end
  end
end

我错了。。该问题是 gem 源花式抽风造成的，最后的解决办法是淘宝源和 rubygems 来回切换了十多回总算把 bundle 跑完了…但还是很疑惑 mina deploy 过程为什么要重新 install list 中已经存在的 gem。。目前 mina 还在抽风中，各种不明 failed…唉，结贴