Book Image

HashiCorp Infrastructure Automation Certification Guide

By : Ravi Mishra
Book Image

HashiCorp Infrastructure Automation Certification Guide

By: Ravi Mishra

Overview of this book

Terraform is a highly sought-after technology for orchestrating infrastructure provisioning. This book is a complete reference guide to enhancing your infrastructure automation skills, offering up-to-date coverage of the HashiCorp infrastructure automation certification exam. This book is written in a clear and practical way with self-assessment questions and mock exams that will help you from a HashiCorp infrastructure automation certification exam perspective. This book covers end-to-end activities with Terraform, such as installation, writing its configuration file, Terraform modules, backend configurations, data sources, and infrastructure provisioning. You'll also get to grips with complex enterprise infrastructures and discover how to create thousands of resources with a single click. As you advance, you'll get a clear understanding of maintaining infrastructure as code (IaC) in Repo/GitHub, along with learning how to create, modify, and remove infrastructure resources as and when needed. Finally, you'll learn about Terraform Cloud and Enterprise and their enhanced features. By the end of this book, you'll have a handy, up-to-date desktop reference guide along with everything you need to pass the HashiCorp Certified: Terraform Associate exam with confidence.
Table of Contents (17 chapters)
1
Section 1: The Basics
4
Section 2: Core Concepts
10
Section 3: Managing Infrastructure with Terraform
14
Chapter 11: Terraform Glossary

Overviewing Terraform Sentinel

Terraform Sentinel is a feature that is only available in the paid version of HashiCorp products such as Vault Enterprise, Nomad Enterprise, Consul Enterprise, Terraform Cloud, or Terraform Enterprise. This is basically a well-defined framework written in a code format—that is, policy as code. Terraform Sentinel has its own standard language of writing: Sentinel language. Don't worry, as it's not difficult to learn this language: anyone can learn it in just an hour, and you don't require any sort of programming language experience for this. Terraform Sentinel helps to restrict or control the behavior of the infrastructure before it actually gets deployed. Sentinel checks for defined governance requirements, and this whole flow can be controlled and automated by placing them in the VCS, as illustrated in the following diagram:

Figure 10.12 – Terraform Sentinel phase

The Sentinel CLI will run and validate...