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+# eks-managed-nodegroup
+Create EKS cluster using managed nodegroup. Then performed EKS control plane upgrades.
+
+## Versions and upgrade notes
+Based on 1-4 t3.medium worker node with no app pods
+
+| eks-ver | coredns            | kube-proxy          | vpc-cni            | AMI-version      | upgrade notes                                                       |
+|---------|--------------------|---------------------|--------------------|------------------|---------------------------------------------------------------------|
+| 1.25    | v1.9.3-eksbuild.10 | v1.25.16-eksbuild.1 | v1.15.4-eksbuild.1 | 1.25.15-20231201 | N/A                                                                 |
+| 1.26    | v1.9.3-eksbuild.10 | v1.26.11-eksbuild.1 | v1.15.4-eksbuild.1 | 1.26.10-20231201 | from 1.25, set cluster_version = "1.26". nodes are recreated. 23min |
+| 1.27    | v1.10.1-eksbuild.6 | v1.27.6-eksbuild.2  | v1.15.4-eksbuild.1 | 1.27.7-20231201  | from 1.26, set cluster_version = "1.27". nodes are recreated. 16min |
+| 1.28    | v1.10.1-eksbuild.6 | v1.28.4-eksbuild.1  | v1.15.4-eksbuild.1 | 1.28.3-20231201  | from 1.27, set cluster_version = "1.28". nodes are recreated. 26min |
+
+## References
+https://repost.aws/knowledge-center/eks-plan-upgrade-cluster
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