tffreeze

tffreeze is the tool to substitute variables in the HCL files.

Usage

tffreeze [OPTION]... [FILE]...

Substitute HCL files with tfvars

You can substitute variables with .tfvars file.

tffreeze -var-file <tfvars file> [FILE]...

Example

When you run tffreeze with "main.tf" and "variable.tfvars", you can get substituted file named "main.freeze.tf".

tffreeze -var-file variables.tfvars main.tf

main.tf

resource "google_compute_instance" "default" {
    name         = var.instance_name
    machine_type = "n2-standard-${var.cpus}"
    zone         = var.zone

    tags = var.tags

    boot_disk {
        initialize_params {
            image  = var.disk_image
            labels = var.disk_labels
        }
    }
}

variables.tf

instance_name = "default-instance"
cpus          = 2

tags = ["foo", "bar"]

disk_labels = {
    baz = "qux"
}

main.freeze.tf

resource "google_compute_instance" "default" {
    name         = "default-instance"
    machine_type = "n2-standard-2"
    zone         = var.zone

    tags = ["foo", "bar"]

    boot_disk {
        initialize_params {
            image  = var.disk_image
            labels =  {
                baz = "qux"
            }
        }
    }
}