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Chef Cookbook Workflow

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This document provides an overview of Chef including what Chef is, the Chef client software, infrastructure as code, cookbooks, resources, testing tools, and the Chef workflow. It discusses key Chef concepts like nodes, recipes, attributes, templates, and search. It provides examples of using Chef to install and configure software like NTP and PostgreSQL. It also highlights tools for testing Chef cookbooks including Vagrant, Foodcritic, ChefSpec, Test Kitchen, and servers for managing the Chef workflow.

Aperfeiçoamento pessoalNegócios
1 de 21
Cooking with Chef Michael Richardson @Mr_SPB
Topics • What is Chef • chef-client software • What does “Infrastructure as code” look like • What’s in a Cookbook • Testing your infrastructure code • Workflow
Chef Architecture
Chef Client Software Commands • ohai (nodes) • chef-client (nodes) • chef-solo (nodes) • shef (node / workstation) • knife (workstations / build hosts?)
Infrastructure as Code
What is a cookbook • Fundamental units in Chef • Encapsulate resources • Contains recipes
Resources
Want more resources?
Enter LWRP
The Common Cookbook Cooking 101 Step 1 - Install some software Step 2 - Create a config file for the software Step 3 - Start the software and set it to always start on system boot
The Common Cookbook • NTP example • chef-repo/cookbooks/ntp/recipes/default.rb
Demo Time • NTP cookbook
Config Files What normally goes in a config file? • Credentials (eg for a DB) • Application config switches • Application settings • Information about the local node • Information about other nodes in your system
Config Files What normally goes in a config file? • Credentials (eg for a DB) • Application config switches • Application settings • Information about the local node • Information about other nodes in your system Where can we gather information from to • Chef Data Bags • Cookbook attributes • Node attributes • Peer node information via Chef search
Config Files - examples cookbook/postgresql/recipes/server.rb cookbook/postgresql/templates/default/postgres_pg_hba.conf.erb
Testing Tools • Vagrant • [http://vagrantup.com] • foodcritic • [http://acrmp.github.com/foodcritic/] • minitest-handler • [https://github.com/calavera/minitest-chef-handler] • chefspec • [https://github.com/acrmp/chefspec] • [https://github.com/customink/fauxhai] • test-kitchen • [https://github.com/opscode/test-kitchen]
Cookbook Workflow You need to consider • Run chef-client as a daemon or on-demand • Version cookbooks • Push cookbook updates from your workstation or a build server • Use no-op or why-run options
Questions
Questions Is Chef Awesome?
Questions Is Chef Awesome?
Anymore Questions?

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Chef Cookbook Workflow

  • 1. Cooking with Chef Michael Richardson @Mr_SPB
  • 2. Topics • What is Chef • chef-client software • What does “Infrastructure as code” look like • What’s in a Cookbook • Testing your infrastructure code • Workflow
  • 4. Chef Client Software Commands • ohai (nodes) • chef-client (nodes) • chef-solo (nodes) • shef (node / workstation) • knife (workstations / build hosts?)
  • 6. What is a cookbook • Fundamental units in Chef • Encapsulate resources • Contains recipes
  • 10. The Common Cookbook Cooking 101 Step 1 - Install some software Step 2 - Create a config file for the software Step 3 - Start the software and set it to always start on system boot
  • 11. The Common Cookbook • NTP example • chef-repo/cookbooks/ntp/recipes/default.rb
  • 12. Demo Time • NTP cookbook
  • 13. Config Files What normally goes in a config file? • Credentials (eg for a DB) • Application config switches • Application settings • Information about the local node • Information about other nodes in your system
  • 14. Config Files What normally goes in a config file? • Credentials (eg for a DB) • Application config switches • Application settings • Information about the local node • Information about other nodes in your system Where can we gather information from to • Chef Data Bags • Cookbook attributes • Node attributes • Peer node information via Chef search
  • 15. Config Files - examples cookbook/postgresql/recipes/server.rb cookbook/postgresql/templates/default/postgres_pg_hba.conf.erb
  • 16. Testing Tools • Vagrant • [http://vagrantup.com] • foodcritic • [http://acrmp.github.com/foodcritic/] • minitest-handler • [https://github.com/calavera/minitest-chef-handler] • chefspec • [https://github.com/acrmp/chefspec] • [https://github.com/customink/fauxhai] • test-kitchen • [https://github.com/opscode/test-kitchen]
  • 17. Cookbook Workflow You need to consider • Run chef-client as a daemon or on-demand • Version cookbooks • Push cookbook updates from your workstation or a build server • Use no-op or why-run options