Chef Intermediate Topics

Summary

Chef Intermediate Topics is an instructor-led course that first introduces you to test-driven development (TDD) and then shows you how to extend your cookbooks with custom resources and Ohai plugins.

Description

Chef Intermediate Topics is an instructor-led course that first introduces you to test-driven development (TDD) and then shows you how to extend your cookbooks with custom resources and Ohai plugins.

Building cookbooks with tests will increase the speed at which you work by giving you consistent feedback throught the entire cookbook developoment process. Extending your cookbooks with custom resources will increase clarity within your recipes and provide resources that are portable to other cookbooks. Ohai plugins gather data from your nodes that will aid in more dynamic recipes and extensive reporting.

In this course, you will learn how to confidently refactor and extand a cookbook through explanation, demonstration, practice, and discussion. At the end of the course, you will have created a code repository that can be applied to solve the unique challenges you face managing your infrastructure.

Two day course agenda:

  • Introduction
  • Why write tests? Why is that hard?
  • Writing a test first
  • Refactoring cookbooks with tests
  • Faster feedback with unit testing
  • Testing resources in recipes
  • Refactoring to attributes
  • Refactoring to multiple platforms
  • Approaches to extending resources
  • Why use custom resources
  • Creating a custom resource
  • Refining a custom resource
  • Ohai
  • Ohai plugins
  • Creating an Ohai plugin
  • Tuning Ohai

 

Student Requirements:

  • You need familiarity and comfort with the following:
  • Writing code (of just about any flavor) in a text editor
  • Working on the command line
  • Basic system administration – installing packages, configuring those packages, starting a service
  • To take this course, you should have completed Chef Foundations or Chef Essentials, or have comparable work experience. You should have anworking knowledge of core Chef concepts and resources

Duration

2 Days