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Terraform

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terraform

Produit de Hashicorp.

eks nodegroup desired_size not updated

You can do it manually with awscli using

cluster_name="$(aws eks list-clusters | jq -r .clusters[0])"
nodegroup_name="$(aws eks list-nodegroups --cluster-name "${cluster_name}"|jq -r .nodegroups[0])"
aws eks update-nodegroup-config  --nodegroup-name "${nodegroup_name}" --cluster-name "${cluster_name}" --scaling-config 'maxSize=3'
aws eks update-nodegroup-config  --nodegroup-name "${nodegroup_name}" --cluster-name "${cluster_name}" --scaling-config 'desiredSize=3'

{
    "update": {
        "id": "8e6df717-99e3-310c-80ba-ce2747e474aa",
        "status": "InProgress",
        "type": "ConfigUpdate",
        "params": [
            {
                "type": "DesiredSize",
                "value": "3"
            }
        ],
        "createdAt": "2024-08-09T16:08:44.445000+02:00",
        "errors": []
    }
}

Autoscaling of nodes via cluster autoscaler or Karpenter is the preferred method by many

— https://github.com/terraform-aws-modules/terraform-aws-eks/issues/2030

Terraform does not allow for parameterizing ignore_changes at this time so this is the default effect

— https://github.com/terraform-aws-modules/terraform-aws-eks/issues/2030

It is assumed that most users will utilize a form of autoscaling that will manage the desired_size attribute of the node groups (i.e. - Cluster Autoscaler will manage this attribute for scaling), and therefore Terraform should not attempt to manage after it has been initially set during creation of the node group.

— https://github.com/bryantbiggs/eks-desired-size-hack

Notes pointant ici