All installations require a central workspace known as the chef-repo. This is a place where primitive objects--cookbooks, roles, environments, data bags, and chef-repo configuration files--are stored and managed.
The chef-repo should be kept under version control, such as git, and then managed as if it were source code.
Knife is the command line interface for Chef. The chef-repo contains a .chef directory (which is a hidden directory by default) in which the Knife configuration file (knife.rb) is located. This file contains configuration settings for the chef-repo.
Also located inside the .chef directory are .pem files, which contain private keys used to authenticate requests made to the Chef server. The USERNAME.pem file contains a private key unique to the user (and should never be shared with anyone). The ORGANIZATION-validator.pem file contains a private key that is global to the entire organization (and is used by all nodes and workstations that send requests to the Chef server).
More information about knife.rb configuration options can be found in the documentation for knife.
A cookbook is the fundamental unit of configuration and policy distribution. A sample cookbook can be found in
cookbooks/starter. After making changes to any cookbook, you must upload it to the Chef server using knife:
$ knife upload cookbooks/starter
For more information about cookbooks, see the example files in the
Roles provide logical grouping of cookbooks and other roles. A sample role can be found at