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

Creating and using private extensions

To enable the registry, we first need to understand the limits and nuances of registry resource handlers. In the previous chapter, we had our Lambda function run in a public network and connect to the RDS instance, also hosted on the public network, via a native Python MySQL driver.

In this chapter, we will follow a similar path.

Preparing database infrastructure

We will provision the same stack as used in the previous chapter. If you still have it running, feel free to skip this step:

$ aws cloudformation deploy \      --stack-name rds \
      --template-file rds.yaml

When the RDS instance is provisioned and ready for use, we can leave it and move on to modeling our resource type.

Modeling resource types for the CloudFormation registry

CloudFormation requires extension developers to properly model the resource types. This is crucial for provisioning reliability and...