Book Image

Mastering AWS CloudFormation

By : Karen Tovmasyan
Book Image

Mastering AWS CloudFormation

By: Karen Tovmasyan

Overview of this book

DevOps and the cloud revolution have forced software engineers and operations teams to rethink how to manage infrastructures. With this AWS book, you'll understand how you can use Infrastructure as Code (IaC) to simplify IT operations and manage the modern cloud infrastructure effectively with AWS CloudFormation. This comprehensive guide will help you explore AWS CloudFormation from template structures through to developing complex and reusable infrastructure stacks. You'll then delve into validating templates, deploying stacks, and handling deployment failures. The book will also show you how to leverage AWS CodeBuild and CodePipeline to automate resource delivery and apply continuous integration and continuous delivery (CI/CD) practices to the stack. As you advance, you'll learn how to generate templates on the fly using macros and create resources outside AWS with custom resources. Finally, you'll improve the way you manage the modern cloud in AWS by extending CloudFormation using AWS serverless application model (SAM) and AWS cloud development kit (CDK). By the end of this book, you'll have mastered all the major AWS CloudFormation concepts and be able to simplify infrastructure management.
Table of Contents (17 chapters)
1
Section 1: CloudFormation Internals
4
Section 2: Provisioning and Deployment at Scale
9
Section 3: Extending CloudFormation

Chapter 2: Advanced Template Development

  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 take 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 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...