If a Chef cookbook is “frozen”, the cookbook is protected against accidental overwrite.
When someone tries to overwrite it the
Version ... of cookbook COOKBOOK_NAME is frozen. Use --force to override"
To check if a Chef cookbook is frozen on the Chef server execute the following command
knife cookbook show COOKBOOK_NAME latest | grep frozen
To upload a Chef cookbook and freeze it to prevent accidental overwrite
knife cookbook upload COOKBOOK_NAME --freeze
To overwrite a frozen cookbook upload it with
knife cookbook upload COOKBOOK_NAME --force
To freeze the referenced cookbooks when you upload them with BerkShelf upload them with
(do not use the –no-freeze option)