A plugin for Chef::Knife which will delete normal attributes of your nodes.
Supply nested attributes and the 'recursive' token if you like a recursive delete.
% knife del_attribute node_name attribute.sub_attribute recursive
% knife del_attribute node_name attribute.sub_attribute
Copy the knife-del-attribute script from del_attribute.rb to your ~/.chef/plugins/knife directory.
$ git clone [email protected]:amian84/knife-del-attribute.git
$ mkdir -p ~/.chef/plugins/knife/
$ cp knife-del-attribute/del_attribute.rb ~/.chef/plugins/knife/