[Bug] Error: failed to install Karpenter: failed to install Karpenter chart: failed to install chart: Kubernetes cluster unreachable: exec plugin: invalid apiVersion "client.authentication.k8s.io/v1alpha1"

[andreprawira]

What were you trying to accomplish?

We are trying to install Karpenter when deploying EKS cluster by running eksctl in a codebuild project created by AWS CDK

What happened?

We know that Karpenter can only be installed using Eksctl during first time cluster creation based on this issue and thats what we did. However, we got this error Error: failed to install Karpenter: failed to install Karpenter chart: failed to install chart: Kubernetes cluster unreachable: exec plugin: invalid apiVersion "client.authentication.k8s.io/v1alpha1"

How to reproduce it?

create a codebuild project that runs eksctl create cluster -f cluster_config.yaml in its buildspec.yaml

If using a config file, include it here, removing any sensitive information!
-->

apiVersion: eksctl.io/v1alpha5
kind: ClusterConfig

metadata:
  name: test-cluster
  region: us-east-1
  version: "1.31"
  tags:
    karpenter.sh/discovery: test-cluster
vpc:
  id: ${VPC_ID}
  subnets:
    private:
      us-east-1a: { id: subnet-abcd}
      us-east-1b: { id: subnet-abcd}
iam:
  withOIDC: true

iamIdentityMappings:
  - arn: arn:aws:iam::1234:role/AWSReservedSSO_bla2
    groups:
      - system:masters
    username: admin
    noDuplicateARNs: true # prevents shadowing of ARNs
  - arn: arn:aws:iam::1234:role/codebuild-role
    groups:
      - system:masters
    username: codebuild-eks

karpenter:
  version: "1.2.1" # Exact version must be provided
  createServiceAccount: true # default is false
  withSpotInterruptionQueue: true # adds all required policies and rules for supporting Spot Interruption Queue, default is false

managedNodeGroups:
  - name: ng-1
    labels: { role: workers }
    instanceType: t3.medium
    desiredCapacity: 2
    minSize: 1
    maxSize: 3
    privateNetworking: true

Logs

Error: failed to install Karpenter: failed to install Karpenter chart: failed to install chart: Kubernetes cluster unreachable: exec plugin: invalid apiVersion "client.authentication.k8s.io/v1alpha1"
322

Anything else we need to know?

aws/codebuild/amazonlinux2-x86_64-standard:3.0

Versions

~ $ eksctl info
eksctl version: 0.203.0
kubectl version: v1.31.2-eks-94953ac
OS: linux

[github-actions]

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