Learn how to build projects using Terraform.

DevOps for Developers

In this module, you will work from the ground up, starting with what Terraform is and the problems it solves. It will then guide you through the features of Terraform. You will build on your knowledge with the end goal of you being comfortable building projects using Terraform.

Terraform: From Beginner to Master with Examples in AWS

## Project example
Consider the following project:




provider "aws" {
    region = "us-east-2"
}

variable "bucket_name" {
    description = "the name of the bucket you wish to create"
}

variable "bucket_suffix" {
    default = "-abcd"
}

resource "aws_s3_bucket" "bucket" {
    bucket = "${var.bucket_name}${var.bucket_suffix}"
}


We have extended the first example and added a second variable `"bucket_suffix"` which has its default set to `"-abcd"`. Setting a default on a `variable` means that if you do not provide a value for that variable, then the default will be used. We then use the value of the `bucket_name` variable concatenated with the value of the `bucket_suffix` variable for the value of the bucket name. As we use the values inside a string, we need to surround our variables with `${` and `}`. Otherwise,
Terraform will not use the value of the `variable` and instead will just print the string `var.bucket_name`.

# Project example
Consider the following project:


We have extended the first example and added a second variable `"bucket_suffix"` which has its default set to `"-abcd"`. Setting a default on a `variable` means that if you do not provide a value for that variable, then the default will be used. We then use the value of the `bucket_name` variable concatenated with the value of the `bucket_suffix` variable for the value of the bucket name. As we use the values inside a string, we need to surround our variables with `＄{` and `}`. Otherwise,
Terraform will not use the value of the `variable` and instead will just print the string `var.bucket_name`.

This lesson will teach you how to set defaults in Terraform variables and their use.

Variable Defaults

Project example