How to create aws-load-balancer-controller on specific node in aws EKS

Question

I'm trying to install aws-load-balancer-controller in my EKS cluster using terraform (resource "helm_release" "aws_load_balancer_controller").

I want the pod (pod/aws-load-balancer-controller-555d8dcf46-zz6tn) created in this process should be scheduled inside specific node.

I know that nodeSelector and nodeAffinity can be easily used, but I'm using terraform to create resources and not getting option to do so.

Any help would be appreciated.

Answer 1

In order to define the nodeSelector or affinity you have to use the values option [1] for the helm_release. So, in your case that would be something like:

resource "helm_release" "aws_load_balancer_controller" {
  name       = "aws-load-balancer-controller"
  repository = "https://aws.github.io/eks-charts"
  chart      = "aws-load-balancer-controller"
  version    = "1.4.3"

  values = [
    file("${path.module}/values.yaml")
  ]
}

Then, you would have to create a values.yaml file in the same directory:

nodeSelector:
  <label_key>: <label_value>

where the <label_key> and <label_value> is the label key value pair for the Node you wish to run the Pod on.

---

[1] https://registry.terraform.io/providers/hashicorp/helm/latest/docs/resources/release#values