Infrastructure as Code Using Terraform/

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Terraform Variables: Local and Environment

Terraform Variables: Local and Environment

Learn about Terraform's local and environment variables and how to work with them.

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Overview

One of the advantages of writing our infrastructure as code is the ability to use variables to store values as we require. The ability to use just a single configuration for different target environments enhances the flexibility of IaC. The code below shows the syntax to create a variable in Terraform:

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variable "variable_name" {
 type        = string || number || bool || list || tuple || map || object
 description = "Any description"
 default     = "The default value for the variable"
}

The major parameters include:

  • variable_name: This is the given name of the variable.
  • type: This is the type of variable we’re creating. The value can be either string, number, bool, list, tuple, map, or object.
  • description: This describes what our variable is for.
  • default: This is the default value of our variable.

The code snippet below shows a typical use case where we create variables for a VPC resource and then use these variables to create the ...