main.tf

provider "aws" {
  region = "us-east-1"
}

## Setup roles
resource "aws_iam_role" "eks_cluster_role" {
  name = "eks_cluster_role"

  assume_role_policy = jsonencode({
    Version = "2012-10-17",
    Statement = [
      {
        Action = "sts:AssumeRole",
        Effect = "Allow",
        Principal = {
          Service = "eks.amazonaws.com"
        }
      },
    ],
  })
}

resource "aws_iam_role_policy_attachment" "eks_cluster_AmazonEKSClusterPolicy" {
  policy_arn = "arn:aws:iam::aws:policy/AmazonEKSClusterPolicy"
  role       = aws_iam_role.eks_cluster_role.name
}

resource "aws_iam_role_policy_attachment" "eks_cluster_AmazonEKSVPCResourceController" {
  policy_arn = "arn:aws:iam::aws:policy/AmazonEKSVPCResourceController"
  role       = aws_iam_role.eks_cluster_role.name
}

resource "aws_iam_role" "eks_node_group_role" {
  name = "eks_node_group_role"

  assume_role_policy = jsonencode({
    Version = "2012-10-17",
    Statement = [
      {
        Action = "sts:AssumeRole",
        Effect = "Allow",
        Principal = {
          Service = "ec2.amazonaws.com"
        }
      },
    ],
  })
}

resource "aws_iam_role_policy_attachment" "eks_node_group_AmazonEKSWorkerNodePolicy" {
  policy_arn = "arn:aws:iam::aws:policy/AmazonEKSWorkerNodePolicy"
  role       = aws_iam_role.eks_node_group_role.name
}

resource "aws_iam_role_policy_attachment" "eks_node_group_AmazonEC2ContainerRegistryReadOnly" {
  policy_arn = "arn:aws:iam::aws:policy/AmazonEC2ContainerRegistryReadOnly"
  role       = aws_iam_role.eks_node_group_role.name
}

resource "aws_iam_role_policy_attachment" "eks_node_group_AmazonEKS_CNI_Policy" {
  policy_arn = "arn:aws:iam::aws:policy/AmazonEKS_CNI_Policy"
  role       = aws_iam_role.eks_node_group_role.name
}