terraform-aws-eks/examples/eks-managed-node-group/eks-al2023.tf

module "eks_al2023" {
  source  = "terraform-aws-modules/eks/aws"
  version = "~> 21.0"

  name               = "${local.name}-al2023"
  kubernetes_version = "1.33"

  # EKS Addons
  addons = {
    coredns = {}
    eks-pod-identity-agent = {
      before_compute = true
    }
    kube-proxy = {}
    vpc-cni = {
      before_compute = true
    }
  }

  vpc_id     = module.vpc.vpc_id
  subnet_ids = module.vpc.private_subnets

  eks_managed_node_groups = {
    example = {
      # Starting on 1.30, AL2023 is the default AMI type for EKS managed node groups
      instance_types = ["m6i.large"]
      ami_type       = "AL2023_x86_64_STANDARD"

      min_size = 2
      max_size = 5
      # This value is ignored after the initial creation
      # https://github.com/bryantbiggs/eks-desired-size-hack
      desired_size = 2

      # This is not required - demonstrates how to pass additional configuration to nodeadm
      # Ref https://awslabs.github.io/amazon-eks-ami/nodeadm/doc/api/
      cloudinit_pre_nodeadm = [
        {
          content_type = "application/node.eks.aws"
          content      = <<-EOT
            ---
            apiVersion: node.eks.aws/v1alpha1
            kind: NodeConfig
            spec:
              kubelet:
                config:
                  shutdownGracePeriod: 30s
          EOT
        }
      ]
    }
  }

  tags = local.tags
}