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54 changes: 42 additions & 12 deletions modules/aws/eks-addons/main.tf
Original file line number Diff line number Diff line change
Expand Up @@ -111,19 +111,49 @@ resource "aws_eks_addon" "ebs_csi" {
tags = var.tags
}

# Set gp3 (EBS CSI) as default StorageClass and enable volume expansion.
resource "terraform_data" "gp3_default_storageclass" {
# gp3 StorageClass using EBS CSI driver (replaces in-tree gp2)
resource "kubectl_manifest" "gp3_storageclass" {
yaml_body = yamlencode({
apiVersion = "storage.k8s.io/v1"
kind = "StorageClass"
metadata = {
name = "gp3"
annotations = {
"storageclass.kubernetes.io/is-default-class" = "true"
}
}
provisioner = "ebs.csi.aws.com"
parameters = {
type = "gp3"
fsType = "ext4"
}
reclaimPolicy = "Delete"
volumeBindingMode = "WaitForFirstConsumer"
allowVolumeExpansion = true
})

depends_on = [aws_eks_addon.ebs_csi]
}

provisioner "local-exec" {
command = <<-EOT
kubectl patch storageclass gp3 -p '{"metadata":{"annotations":{"storageclass.kubernetes.io/is-default-class":"true"}}}' --type=merge
kubectl patch storageclass gp3 -p '{"allowVolumeExpansion":true}' --type=merge
kubectl patch storageclass gp3 -p '{"reclaimPolicy":"Delete"}' --type=merge
kubectl patch storageclass gp2 -p '{"metadata":{"annotations":{"storageclass.kubernetes.io/is-default-class":null}}}' --type=merge 2>/dev/null || true
EOT
}
# Remove default annotation from the legacy in-tree gp2 storage class
resource "kubectl_manifest" "gp2_remove_default" {
yaml_body = yamlencode({
apiVersion = "storage.k8s.io/v1"
kind = "StorageClass"
metadata = {
name = "gp2"
annotations = {
"storageclass.kubernetes.io/is-default-class" = "false"
}
}
provisioner = "kubernetes.io/aws-ebs"
reclaimPolicy = "Delete"
volumeBindingMode = "WaitForFirstConsumer"
})

depends_on = [kubectl_manifest.gp3_storageclass]

# Re-run when inputs change (triggers replace)
input = "gp3-default"
lifecycle {
ignore_changes = [yaml_body]
}
}
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