The Terraform Book

Chapter 3: Building an application stack with Terraform
Listing 3.42: The vpc module’s variables
variable "name" {
description = "The name of the VPC."
}
variable "cidr" {
description = "The CIDR of the VPC."
}
variable "public_subnet" {
description = "The public subnet to create."
}
variable "enable_dns_hostnames" {
description = "Should be true if you want to use private DNS
within the VPC"
default = true
}
variable "enable_dns_support" {
description = "Should be true if you want to use private DNS
within the VPC"
default = true
}
You can see that we’ve defined a number of variables. Some of the variables will
be required: name, cidr, and public_subnet. These variables currently have no
defaults, so we must specify a value for each of them. We’ve specified the values
in the module block in our web.tf file. This represents the incoming API for the
vpc module.
Version: v1.1.1 (e771e4d) 32