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

Understanding Terraform functions

There are many built-in Terraform functions that you can use to transform data into the format you might be looking to consume in the respective configuration code. Often, it may be that the format of the data returned by the data source and resource is not compatible with the data format that you need for passing to other resources. Terraform provides built-in functions in the following categories:

  • Numeric
  • String
  • Collection
  • Encoding
  • Filesystem
  • Date and time
  • Hash and crypto
  • IP network
  • Type conversion

It is not possible to discuss all the Terraform built-in functions here. If you are interested in knowing about all the Terraform functions, you can refer to https://www.terraform.io/docs/configuration/functions.html. It is most important for you to understand how to use functions and how to test the Terraform function using the Terraform console.

If you are already familiar with any programming language...