Kubernetes upgrade unsupported version

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1

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We are running v1.20.15 in our HA cluster and looking to upgrade it. The skewed policy says not to skip a version but I have also read that if the current version is unsupported (which is in my case 1.20.15 EOL - 2022-02-28), then I can skip versions. Please let me know if I can upgrade to 1.22 or 1.23 versions.

Cluster information:

Kubernetes version: 1.20.15
Cloud being used: (put bare-metal if not on a public cloud) : bare-metal
Installation method: Rancher
Host OS: Centos 7
CNI and version: Canal
CRI and version: docker

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2

The upgrade has to be compatible with Kubernetes version skew policy. This implies you have to do a lock-step upgrade from 1.20 → 1.21 → 1.22. You may also consider using blue-green deployment if you wish to avoid this path.