You're reading from Mastering AWS CloudFormation Plan, develop, and deploy your cloud infrastructure effectively using AWS CloudFormation

Product type Paperback

Published in May 2020

Publisher Packt

ISBN-13 9781789130935

Length 300 pages

Edition 1st Edition

Tools

AWS

Concepts

Infrastructure Management

Author (1):

Karen Tovmasyan

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Table of Contents (17) Chapters

Preface

1. Section 1: CloudFormation Internals

2. CloudFormation Refresher FREE CHAPTER

3. Advanced Template Development

4. Section 2: Provisioning and Deployment at Scale

5. Validation, Linting, and Deployment of the Stack

6. Continuous Integration and Deployment

7. Deploying to Multiple Regions and Accounts Using StackSets

8. Configuration Management of the EC2 Instances Using cfn-init

9. Section 3: Extending CloudFormation

10. Creating Resources outside AWS Using Custom Resources

11. Dynamically Rendering the Template Using Template Macros

12. Generating CloudFormation Templates Using AWS CDK

13. Deploying Serverless Applications Using AWS SAM

14. What's Next?

15. Assessments

16. Other Books You May Enjoy

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Going through the internals of the template

The template is the main building block of CloudFormation. We can consider the template as a declarative instruction for CloudFormation—for example, what to create and how many.

The template file, whether in JSON or YAML, consists of several elements, which we will describe in the rest of this section.

AWSTemplateFormatVersion

The AWSTemplateFormatVersion section is responsible for instructing CloudFormation as to what version of the template we are going to supply it with.

Not to be confused with the API version of CloudFormation, AWSTemplateFormatVersion is about the structure of the template.

When AWS has added this block to resolve potential breaking changes to CloudFormation, it can only have one value: "2010-09-09". This version is there from the very beginning of CloudFormation, but there is always a chance that AWS will add newer versions for template formatting. Until then, this section...