Terraform: From Beginner to Master with Examples in AWS/

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Locals in Detail

Locals in Detail

This lesson will cover Terraform local, how they work, and how to use them.

We'll cover the following...

Terraform local

A local is Terraform’s representation of a normal programming language variable. Confusingly, Terraform also has a concept called a variable which is really an input (variables are covered in the variables chapter). A local can refer to a fixed value such as a string, or it can be used to refer to an expression such as two other locals concatenated together.

Project example

Let’s dive into an example:

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provider "aws" {
    region = "us-east-2"
}
locals {
    first_part = "hello"
    second_part = "${local.first_part}-there"
    bucket_name = "${local.second_part}-how-are-you-today"
}
resource "aws_s3_bucket" "bucket" {
    bucket = local.bucket_name
}

Project code in detail

In the code above:

  • We define a local block by using the keyword locals and then an opening { ...