2_eks.tf

module "eks" {
  source  = "terraform-aws-modules/eks/aws"
  version = "19.15.3"

  cluster_name    = "${var.cluster-name}-${var.environment}"
  cluster_version = "1.27"

  vpc_id                         = module.vpc.vpc_id
  subnet_ids                     = module.vpc.private_subnets
  cluster_endpoint_public_access = true

  eks_managed_node_group_defaults = {
    ami_type = "AL2_x86_64"
  }

  eks_managed_node_groups = {
    aep-workers = {
      name = "aep-workers"

      instance_types = ["t3.small"]

      min_size     = 1
      max_size     = 3
      desired_size = 2
    }
  }
}

data "aws_iam_policy" "ebs_csi_policy" {
  arn = "arn:aws:iam::aws:policy/service-role/AmazonEBSCSIDriverPolicy"
}

module "irsa-ebs-csi" {
  source  = "terraform-aws-modules/iam/aws//modules/iam-assumable-role-with-oidc"
  version = "4.7.0"

  create_role                   = true
  role_name                     = "AmazonEKSTFEBSCSIRole-${module.eks.cluster_name}"
  provider_url                  = module.eks.oidc_provider
  role_policy_arns              = [data.aws_iam_policy.ebs_csi_policy.arn]
  oidc_fully_qualified_subjects = ["system:serviceaccount:kube-system:ebs-csi-controller-sa"]
}

resource "aws_eks_addon" "ebs-csi" {
  cluster_name             = module.eks.cluster_name
  addon_name               = "aws-ebs-csi-driver"
  addon_version            = "v1.28.0-eksbuild.1"
  service_account_role_arn = module.irsa-ebs-csi.iam_role_arn
  tags = {
    "eks_addon" = "ebs-csi"
    "terraform" = "true"
  }
}

data "aws_eks_cluster" "cluster" {
  name = module.eks.cluster_name
  depends_on = [ module.eks.cluster_name  ]
}

data "aws_eks_cluster_auth" "cluster" {
    name = module.eks.cluster_name
}

provider "kubernetes" {
  host                   = data.aws_eks_cluster.cluster.endpoint
  cluster_ca_certificate = base64decode(data.aws_eks_cluster.cluster.certificate_authority[0].data)
  token                  = data.aws_eks_cluster_auth.cluster.token
}

provider "helm" {
  kubernetes {
    host                   = data.aws_eks_cluster.cluster.endpoint
    cluster_ca_certificate = base64decode(data.aws_eks_cluster.cluster.certificate_authority[0].data)
    token                  = data.aws_eks_cluster_auth.cluster.token
  }
}


output "cluster_security_group_id" {
  description = "Security group ids attached to the cluster control plane"
  value       = module.eks.cluster_security_group_id
}
output "cluster_name" {
  description = "Kubernetes Cluster Name"
  value       = module.eks.cluster_name
}