What attribute would you use to specify the default value for a variable in Terraform?

In Terraform, the attribute used to specify the default value for a variable is "default." When you define a variable in a Terraform configuration, you can provide a default value that will be used when no explicit value is assigned to that variable during execution. This allows for greater flexibility and reusability of your Terraform modules and configurations.

For example, if you define a variable as follows:

variable "instance_type" {

type    = string

default = "t2.micro"

}

In this case, if you do not pass a specific value for the "instance_type" variable, Terraform will automatically use "t2.micro" as the default. This facilitates default behaviors and eases configuration management, since you do not have to supply all variable values every time you run Terraform.

Understanding the "default" attribute is crucial for managing configurations efficiently, especially in scenarios where certain variables are commonly used with predictable values. This built-in feature streamlines infrastructure provisioning by reducing the need for repetitive specifications.