Preventing ALB Deletion When Deleting Ingress in EKS Cluster

[mphilbin88]

I have an EKS cluster with an ALB attached to an ingress. I've enabled deletion protection on the ALB via annotation.

However, when I delete the ingress, the ALB is also deleted. Is there a way to prevent the ALB from being deleted by EKS?

My ALB is redirecting traffic to a new endpoint, and I want to destroy the EKS cluster without destroying the ALB.

[zac-nixon]

Let me preface this by saying, this is not a normal procedure. However, I have confirmed my LB, TG, Listeners, SG, etc.. was preserved by doing these steps:

1. Enable deletion protection on the ingress: alb.ingress.kubernetes.io/load-balancer-attributes: deletion_protection.enabled=true
2. Remove the LBC finalizer ingress.k8s.aws/resources
3. Delete the ingress, observe that AWS resources are retained while the Ingress is gone.

I didn't test with an Ingress Group, but I suspect that it might not work. Let me know if you're using an Ingress Group, and I can test that out :).