【发布时间】：2015-05-29 02:29:27
【问题描述】：
我正在运行 chef 12 Server、Ubuntu 14.04，并且我正在添加一个工作站 (OSX 10.8.5)，当我运行刀客户端列表时，我收到以下错误。我成功设置了另一个 mac 工作站 10.10.3，它在相同的设置下工作正常。
/opt/chefdk/embedded/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:121:in `require': cannot load such file -- mysql2 (LoadError)
from /opt/chefdk/embedded/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:121:in `require'
from /Users/martinadmin/.chef/plugins/knife/lib/idns_util.rb:1:in `<top (required)>'
from /opt/chefdk/embedded/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:121:in `require'
from /opt/chefdk/embedded/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:121:in `require'
from /Users/martinadmin/.chef/plugins/knife/idns_diff.rb:3:in `<top (required)>'
from /opt/chefdk/embedded/apps/chef/lib/chef/knife/core/subcommand_loader.rb:44:in `load'
from /opt/chefdk/embedded/apps/chef/lib/chef/knife/core/subcommand_loader.rb:44:in `block in load_commands'
from /opt/chefdk/embedded/apps/chef/lib/chef/knife/core/subcommand_loader.rb:44:in `each'
from /opt/chefdk/embedded/apps/chef/lib/chef/knife/core/subcommand_loader.rb:44:in `load_commands'
from /opt/chefdk/embedded/apps/chef/lib/chef/knife.rb:127:in `load_commands'
from /opt/chefdk/embedded/apps/chef/lib/chef/knife.rb:208:in `run'
from /opt/chefdk/embedded/apps/chef/lib/chef/application/knife.rb:142:in `run'
from /opt/chefdk/embedded/apps/chef/bin/knife:25:in `<top (required)>'
from /opt/chefdk/bin/knife:51:in `load'
from /opt/chefdk/bin/knife:51:in `<main>'
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标签： chef-infra