Extract aws_eks_node_group asg name value

Terraform
1

Hey guys, can someone help me to understand how to extract a value? Example: I need to access the asg name:

% tf state show module.cluster.aws_eks_node_group.kube-test
# module.cluster.aws_eks_node_group.kube-test:
resource "aws_eks_node_group" "kube-test" {
...
    cluster_name    = "kube-test"
...
    resources       = [
        {
            autoscaling_groups              = [
                {
                    name = "eks-kube-test-asdfasdf-asdf-asdf-asdf-fbbd59ec1d0e" <-- this value
                },
            ]
            remote_access_security_group_id = ""
        },
    ]
...

Later, I’d like to use it like:

data "aws_autoscaling_group" "kube-test-asg" {
  name = aws_eks_node_group.kube-test.resources[0].autoscaling_groups[0].name
}

I know I’m thinking about this all wrong. If someone can help me to understand how to extract that value I’d be appreciative. TIA

2

I was able to get this far:

data "aws_autoscaling_group" "asg_disco" {
  name = aws_eks_node_group.apps.resources.0.autoscaling_groups.0.name
}

output "asg_name" {
  value = data.aws_autoscaling_group.asg_disco
}

But, this will output all attributes for some reason:

myASG = {
  "arn" = "arn:aws:autoscaling:us-west-2:123456789101:autoScalingGroup:asdf-a2f9-4ee1-9b34-67475966fc39:autoScalingGroupName/eks-test-stage-8cbee51c-qwerty-bf25-0f29-7f23c29bdb70"
  "availability_zones" = toset([
    "us-west-2a",
    "us-west-2b",
    "us-west-2c",
    "us-west-2d",
  ])
  "default_cooldown" = 300
  "desired_capacity" = 4
  "health_check_grace_period" = 15
  "health_check_type" = "EC2"
  "id" = "eks-test-stage-8cbee51c-qwerty-bf25-0f29-7f23c29bdb70"
  "launch_configuration" = ""
  "launch_template" = tolist([])
  "load_balancers" = toset([])
  "max_size" = 12
  "min_size" = 4
  "name" = "eks-test-stage-8cbee51c-qwerty-bf25-0f29-7f23c29bdb70"
  "new_instances_protected_from_scale_in" = false
  "placement_group" = ""
  "service_linked_role_arn" = "arn:aws:iam::123456789101:role/aws-service-role/autoscaling.amazonaws.com/AWSServiceRoleForAutoScaling"
  "status" = ""
  "target_group_arns" = toset([])
  "termination_policies" = toset([
    "AllocationStrategy",
    "OldestInstance",
    "OldestLaunchTemplate",
  ])
  "vpc_zone_identifier" = "subnet-asdf,subnet-asdf,subnet-asdf,subnet-asdf"
}

I understand the limitation of the expression aws_eks_node_group.apps.resources.0.autoscaling_groups.0.name but can someone think of a creative solution?

4

adding .name to the output did it

data “aws_autoscaling_group” “asg_disco” {
name = aws_eks_node_group.apps.resources.0.autoscaling_groups.0.name
}

output “asg_name” {
value = data.aws_autoscaling_group.asg_disco.name # ← super silly
}

PS: nobody should do this particular thing; bad idea.