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Changing Container Runtime from Docker to containerd

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The dockershim has been announced as deprecated since Kubernetes v1.20. And Kubernetes v1.23 is about to step into its EOL after the end of this month. So it’s time to move forward! Let’s upgrade the cluster to v1.24. This article is solely for the personal record about changing container runtimes to upgrade Kubernetes from v1.23 to v1.24. Prerequisites Firstly, make sure what container runtime you are using: $ kubectl get nodes -o wide NAME STATUS ROLES AGE VERSION INTERNAL-IP EXTERNAL-IP OS-IMAGE KERNEL-VERSION CONTAINER-RUNTIME k8s-master.

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