terraform-aws-kubespot/node_role.tf at main · leewang0/terraform-aws-kubespot · GitHub

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resource "aws_iam_role" "node" {
  name = "${var.environment_name}-node"

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

  tags = {
    "KubespotEnvironment" = var.environment_name
  }

}

output "node_role" {
  value = aws_iam_role.node
}

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

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

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

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

resource "aws_iam_role_policy_attachment" "node_role_policies" {
  count      = length(var.node_role_policies)
  policy_arn = var.node_role_policies[count.index]
  role       = aws_iam_role.node.name
}

resource "aws_iam_instance_profile" "node" {
  name = "${var.environment_name}-node"
  role = aws_iam_role.node.name
  tags = {
    "KubespotEnvironment" = var.environment_name
  }
}

resource "aws_iam_role" "node_oidc" {
  name = "${var.environment_name}-node-oidc"

  assume_role_policy = <<EOF
{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Principal": {
        "Federated": "${aws_iam_openid_connect_provider.cluster.arn}"
      },
      "Action": "sts:AssumeRoleWithWebIdentity",
      "Condition": {
        "StringEquals": {
          "${replace(aws_iam_openid_connect_provider.cluster.url, "https://", "")}:sub": "system:serviceaccount:kube-system:cluster-autoscaler"
        }
      }
    }
  ]
}
EOF

  depends_on = [aws_iam_openid_connect_provider.cluster]

  tags = {
    "KubespotEnvironment" = var.environment_name
  }
}