Amazon Linux 2023 - User data configuration for launch templates to connect to the EKS cluster

 Amazon Linux 2023 (AL2023) introduces a new node initialization process nodeadm that uses a YAML configuration schema. If you’re using self-managed node groups or an AMI with a launch template, you’ll now need to provide additional cluster metadata explicitly when creating a new node group

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Content-Type: application/node.eks.aws

---
apiVersion: node.eks.aws/v1alpha1
kind: NodeConfig
spec:
  cluster:
    name: my-cluster-name-prd
    apiServerEndpoint: https://D59F.xyz.ap-northest-2.eks.amazonaws.com
    certificateAuthority: Y2VydGlmaWNhdGVBdXRob3JpdHk=
    cidr: 172.10.0.0/16
  kubelet:
    config:
      clusterDNS:
        - 172.10.0.10
    flags:
    - --node-labels=app=my-app,environment=production

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Content-Type: text/x-shellscript; charset="us-ascii"

#!/bin/bash
set -o errexit
set -o pipefail
set -o nounset

# Install additional packages
yum install -y htop jq iptables-services

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