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

The old-fashioned way of multi-regional and multi-account infrastructure management

Until now, our stack deployment was primarily focused on provisioning resources within a single AWS account and region. But what if we need to provision the same stack in several regions? Let's say we need to provision the same stack in Ireland, North Virginia, and Frankfurt?

Usually, the default region (for example, the API endpoint that we want to connect to) is chosen either from environment variables or from a local config file. When you invoke any command via awscli, it will connect to that specific default region.

We can also specify the region manually as an argument. So, if we want to provision the same stack in different regions, we have to repeat the same command that changes the argument value:

aws cloudformation deploy --region eu-west-1 --template-file foo.yaml
aws cloudformation deploy --region us-east-1 --template-file foo.yaml
aws cloudformation deploy --region eu-central...