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fix(iam): make karpenter and cluster-autoscaler mutual exclusion #175

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Merged
maxsxu merged 1 commit into from
Dec 23, 2025
Merged

fix(iam): make karpenter and cluster-autoscaler mutual exclusion #175

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6 changes: 3 additions & 3 deletions modules/iam/cluster_autoscaler.tf
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
data "aws_iam_policy_document" "cluster_autoscaler_sts" {
count = var.enable_karpenter ? 1 : 0
count = var.enable_karpenter ? 0 : 1

statement {
actions = [
Expand All @@ -24,7 +24,7 @@ data "aws_iam_policy_document" "cluster_autoscaler_sts" {
}

resource "aws_iam_role" "cluster_autoscaler" {
count = var.enable_karpenter ? 1 : 0
count = var.enable_karpenter ? 0 : 1

name = format("%s-ca-role", var.cluster_name)
description = format("Role used by IRSA and the KSA cluster-autoscaler on StreamNative Cloud EKS cluster %s", var.cluster_name)
Expand All @@ -35,7 +35,7 @@ resource "aws_iam_role" "cluster_autoscaler" {
}

resource "aws_iam_role_policy_attachment" "cluster_autoscaler" {
count = var.enable_karpenter ? 1 : 0
count = var.enable_karpenter ? 0 : 1

policy_arn = local.default_service_policy_arn
role = aws_iam_role.cluster_autoscaler.0.name
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6 changes: 3 additions & 3 deletions modules/iam/outputs.tf
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Expand Up @@ -7,7 +7,7 @@ output "cert_manager_arn" {
}

output "cluster_autoscaler_arn" {
value = aws_iam_role.cluster_autoscaler.0.arn
value = try(aws_iam_role.cluster_autoscaler[0].arn, null)
}

output "csi_arn" {
Expand All @@ -19,9 +19,9 @@ output "external_dns_arn" {
}

output "karpenter_arn" {
value = aws_iam_role.karpenter.0.arn
value = try(aws_iam_role.karpenter[0].arn, null)
}

output "velero_arn" {
value = aws_iam_role.velero.0.arn
value = try(aws_iam_role.velero[0].arn, null)
}
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