Basic concepts of Terraform

What is Terraform?

Terraform is an infrastructure as code (IaC) tool that allows you to build, change, and version infrastructure safely and efficiently.

IaC is a code (human readable) that deploys your infrastructure resources onto various platforms instead of managing them manually through a user interface.

How to install Terraform locally

• Download it from here
• Test it by running command terraform -version

You can clone the code from my Github: Terraform Lab

HCL (Language) Basics

• HCL – Harshi-corp configuration language
• “.tf” is the extension of the configuration file

Terraform Execution Flow

• Terraform Initialisation command: terraform init
• Terraform Plan command: terraform plan
• Terraform Apply command: terraform apply

Terraform Variable

Declaring a variable

Referencing a variable

Variable Type

Configure AWS-CLI

• Download it from here
• Check version aws --version
• Configure keys aws configure
• Test connection aws sts get-caller-identity

References

• https://www.terraform.io/downloads
• https://aws.amazon.com/cli/
• https://registry.terraform.io/providers/hashicorp/local/latest/docs/resources/file
• https://registry.terraform.io/providers/hashicorp/aws/latest/docs