c0 KVM: The learn scripts specify instance types that won't work

[mdwyer-edera]

As seen in: https://deploy-preview-473--edera-docs.netlify.app/guides/install/eks/, it recommends you clone this repo.

git clone https://github.com/edera-dev/learn.git

The terraform.tfvars file specifies an m5n.xlarge instance size. This size does not support nested virtualization, so KVM will not function correctly on this type.

# Optional: Node group configuration
instance_types = ["m5n.xlarge"]
desired_size   = 2
min_size       = 1
max_size       = 3

After a half hour of trying, the test will bomb out with this error:

 Error: waiting for EKS Node Group (edera-cluster:edera-protect-nodes-2026062217203823600000000a) create: unexpected state 'CREATE_FAILED', wanted target 'ACTIVE'. last error: i-006f16bd3b7634169, i-04beea9401554a960: NodeCreationFailure: Instances failed to join the kubernetes cluster
│
│   with module.eks.module.eks_managed_node_group["edera_protect"].aws_eks_node_group.this[0],
│   on .terraform/modules/eks/modules/eks-managed-node-group/main.tf line 395, in resource "aws_eks_node_group" "this":
│  395: resource "aws_eks_node_group" "this" {

[mdwyer-edera]

"8i, M8i, R8i, C8id, R8id, M8id, C8i-flex, R8i-flex, M8i-flex, X8i, C7i, R7i, M7i, C7i-flex, M7i-flex, and I7i instances."

Also, it is possible that this switch needs to be thrown:

aws ec2 modify-instance-cpu-options ... --nested-virtualization enabled

[antoineco]

xref. https://github.com/edera-dev/infra/pull/220