1. Workstation - where user interacts with chef
2. Client Node -  machine that manage by chef
3. Chef Server - act as hub for configuration of data. It store the cookbooks, policies and metadata.

• Development kit
• Command line tool
  • Chef - use commandline tool to work with items in chef-repo
  • Knife - use command line tool to work with nodes or work with object on chef server
• Chef-repo - The chef-repo is the repository structure in which cookbooks are authored, tested, and maintained.
  • Cookbooks contain recipes, attributes, custom resources, libraries, files, templates, tests, and metadata
• Test Kitchen - to automatically test the cookbook across any combination of platform.

https://docs.chef.io/quick_start.html

https://docs.chef.io/chef_solo.html

    $ chef-solo -v  # display current version