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 6

  1. The cfn-init helper script processes these configuration sections in the following order: packages, groups, users, sources, files, commands, and then services.
  2. Yes, and it is recommended to do so for complex configurations or to run configuration items in a different order.
  3. No. Only one configuration set can be provided.
  4. Not using the files directive in the config set. You will have to use the commands directive, but it is possible to add a missing directory to the full path of the file, and cfn-init will automatically create it (similar to the mkdir -p command).
  5. WaitCondition is a CloudFormation resource that is used to make CloudFormation wait for resource completion. For example, you can use WaitCondition with cfn-signal to make CloudFormation inform the users about resource creation only when cfn-init has finished running.