terraform 0.12 issue: Error: Reference to "count" in non-counted context

[Thomas Krautzberger]

C:\Testinfo\AWS_Dathub_Vora\AWS-EKS-cluster-Setup-master\AWS-EKS-cluster-Setup-master\EKS_Cluster>terraform plan

Error: Reference to "count" in non-counted context

  on eks_cluster_cloudform_stack.tf line 24, in resource "aws_cloudformation_stack" "eks-worker-nodes":

  24:     Subnets                             = aws_subnet.terraform[count.index].id

The "count" object can be used only in "resource" and "data" blocks, and only

when the "count" argument is set.

Im calling in my tf an AWS cloudformation template and fill it with the necessary parameters, wher one of them is this subnet stuff:

resource "aws_cloudformation_stack" "eks-worker-nodes" {

name = "${var.eks_cluster_name}-worker-node"

capabilities = ["CAPABILITY_IAM"]

depends_on = [aws_eks_cluster.terraform]

#Assigning tags to worker nodes

tags = {

instance_group_01 = var.instance_group_01

pqp_testnumber = var.pqp_testnumber

}

parameters = {

KeyName = var.key_name

NodeImageId = data.aws_ami.eks-worker.id

NodeInstanceType = var.instance_type_EKS_worker

NodeAutoScalingGroupMinSize = "1"

NodeAutoScalingGroupMaxSize = "10"

NodeAutoScalingGroupDesiredCapacity = var.worker_node_capacity

NodeVolumeSize = var.EKS_worker_space_GB

NodeGroupName = var.eks_cluster_name

ClusterName = var.eks_cluster_name

ClusterControlPlaneSecurityGroup = aws_security_group.terraform_eks_sg.id

Subnets = aws_subnet.terraform[count.index].id

VpcId = aws_vpc.terraform.id

}

template_url = "https://amazon-eks.s3-us-west-2.amazonaws.com/cloudformation/2019-01-09/amazon-eks-nodegroup.yaml"

}

But looking at the upgrade guide https://www.terraform.io/upgrade-guides/0-12.html it looks like for me that Subnets = aws_subnet.terraform[count.index].id

is the correct syntax.

Any ideas?

Thanks,

Thomas

[Stuart Clark]

On 28/05/2019 06:44, Thomas Krautzberger wrote:

C:\Testinfo\AWS_Dathub_Vora\AWS-EKS-cluster-Setup-master\AWS-EKS-cluster-Setup-master\EKS_Cluster>terraform plan

Error: Reference to "count" in non-counted context

  on eks_cluster_cloudform_stack.tf line 24, in resource "aws_cloudformation_stack" "eks-worker-nodes":

  24:     Subnets                             = aws_subnet.terraform[count.index].id

The "count" object can be used only in "resource" and "data" blocks, and only

when the "count" argument is set.

As the error says, you can only use count.index if the resource/data block you are in has a "count" element, which your example does not.

Are you just wanting the first subnet to be passed to the parameter? If so replace it with [0] instead of [count.index]

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