Book Image

Mastering AWS CloudFormation - Second Edition

By : Karen Tovmasyan
Book Image

Mastering AWS CloudFormation - Second Edition

By: Karen Tovmasyan

Overview of this book

The advent of DevOps and the cloud revolution has compelled software engineers and operations teams to rethink how to manage complex infrastructures and build resilient solutions. With this AWS book, you’ll find out how you can use Infrastructure as Code (IaC) to simplify infrastructure operations and manage the modern cloud with AWS CloudFormation. This guide covers AWS CloudFormation comprehensively, from template structures to developing complex and reusable infrastructure stacks. It takes you through template validation, stack deployment, and handling deployment failures. It also demonstrates the use of AWS CodeBuild and CodePipeline for automating resource delivery and implementing continuous integration and continuous delivery (CI/CD) practices. As you advance, you’ll learn how to modularize and unify your template on the fly using macros or by fixating the version using modules. You’ll create resources outside of AWS with custom resources and catalog them with the CloudFormation registry. Finally, you’ll improve the way you manage the modern cloud environment on AWS by extending CloudFormation through the AWS serverless application model (SAM) and the AWS cloud development kit (CDK). By the end of this book, you’ll have mastered key AWS CloudFormation concepts and will be able to extend its capabilities for developing and deploying your own infrastructure.
Table of Contents (19 chapters)
Free Chapter
1
Part 1: CloudFormation Internals
4
Part 2: Provisioning and Deployment at Scale
9
Part 3: Extending CloudFormation

Chapter 2

  1. No. The Condition attribute of the resource may have only the Condition name string format.
  2. Yes, it is possible to use Fn::Ref, Fn::GetAttr, or other relevant intrinsic functions with conditional functions such as Fn::If.
  3. UpdatePolicy is a resource attribute that handles the updates for resources such as the auto scaling group. UpdateReplacePolicy is used to manage the behavior of resources that are being replaced by CloudFormation during stack operations.
  4. Retain, since we cannot afford to delete mission-critical databases by mistake in a template or stack operation.
  5. Fn::ImportValue takes the values of exported outputs of other stacks.
  6. Yes, but not in the same AWS Region.
  7. Yes. There is an AWS-specific parameter type called AWS::EC2::Image::Id.
  8. AWS::NoValue can be referred to as a null value. It is not usually used to set any value to a resource property and is mostly used in conjunction with conditional functions.