Improving Cookbook

• Lets understand Ruby basics
• Installing ruby

# Windows
choco install ruby

# brew for mac
brew install ruby

• Refer Here for some ruby samples

• Improved the cookbook

  • created loops for multiple package statements Refer Here

• The default.rb in recipes folder is used to call other recipes in cookbook or to throw errors if the recipe is executed on unsupported os

• Now lets create a recipe called as lamp

• Recipe name is cookbook-name::recipe-name

• To call one recipe from another we use a resource include_recipe <recipe-name>

• Refer Here for the cookbook changes and hash example of ruby

Ohai

• Refer Here for the ohai generated on ubuntu node
• Whenever convergence happens, chef will run the ohai tool and the information collected by ohai can be accessed like a ruby_hash.
• Chef creates a hash object called as node
• Refer Here for using node object in recipe.