EKS can't stop my EC2 instance

1. You can’t stop this EC2 instance because it is managed by EKS. EKS worker nodes cannot be stopped manually, even by an Administrator.

2. The “explicit deny” is not coming from IAM. It is automatically enforced by EKS and its Auto Scaling Group.

3. To stop charges, scale the node group to zero: EKS → Cluster → Compute → Node group → set Desired / Min / Max = 0.

Also, see here: https://repost.aws/questions/QUIKUzqLUmRTugaSmSbo9gpA/how-to-shutdown-eks-to-save-cost