CODEWITHSUNDEEP
terraform
rickyalbert
rickyalbert

Reputation: 2652

Conditional nested block in Terraform resource

Given this resource:

resource "google_compute_instance" "instance" {
    ...
    network_interface {
        ...
        access_config {
            ...
        }
    }
}

I'd like to conditionally define the access_config property based on a condition.

[Edit] Solution

resource "google_compute_instance" "instance" {
    ...
    network_interface {
        ...
        dynamic "access_config" {
            for_each = var.condition ? [1] : []
            content {
                ...
            }
        }
    }
}

Upvotes: 3

Views: 4371

Answers (2)

jlim
jlim

Reputation: 1039

Similar to what Josep Nadal mentioned, but change count to for_each like

  dynamic "access_config" {
    for_each = var.conditional_on ? ["1"] : []
    content {
      nat_ip = null
    }
  }

Upvotes: 5

Josep Nadal
Josep Nadal

Reputation: 112

I am not really familiar, but I think you can accomplish this using the count parameter.

First you need to add a variable into your variables.tf file:

variable "conditional_on" {
  description = "enable or disable"
  type        = bool
}

Then you can add the count parameter with the variable:

resource "google_compute_instance" "instance" {
    ...
    network_interface {
        ...
        dynamic "access_config" {
            count = var.conditional_on ? 1 : 0
            content {
                ...
            }
        }
    }
}

There is more information on the Terraform Documentation: https://www.terraform.io/docs/configuration-0-11/interpolation.html#conditionals

Upvotes: -1

Related Questions