Kubernetes version and the AMI version to be at the same level ?

Question

"Can someone kindly inform me if, in a Kubernetes environment (EKS , when upgrading from Kubernetes version 1.22 to 1.23, is it mandatory to update the AMI (version 1.22.12-20220926) of the nodes to the latest version, or can I continue using it without any issues even if a node restarts?"

Answer

Hello,

You can upgarde your eks version from 1.22 to 1.23 with current ami then, after the control plane upgrade you must upgrade the node group version to 1.23. As to further upgrade cluster to any Kubernetes version both the managed nodes and Fargate nodes in your cluster are required to be same as your control plane's version.

You can check this doc 'https://docs.aws.amazon.com/eks/latest/userguide/update-cluster.html' for detailed information on eks upgrade process.

Kubernetes version and the AMI version to be at the same level ?

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