Lab 4.1 Issue upgrading worker to version 1.22

ojmendezz

I've got this error when upgrading the version of kubeadm in the worker node to 1.22.1-00:

Unable to fetch the kubeadm-config ConfigMap: failed to decode cluster configuration data: no kind "ClusterConfiguration" is registered for version "kubeadm.k8s.io/v1beta3" in scheme "k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm/scheme/scheme.go:31"

After searching on Internet I found this was reported as an issue and was fixed. So, just upgraded the whole cluster to the latest patch version: 1.22.6-00 and worked well.

I guess the lab instructions will be updated soon to use the 1.23 version anyway.

chrispokorni

Hi @ojmendezz,

I have seen this behavior once before, and it was related to an incompatibility between kubeadm.k8s.io/v1beta2 from the early version and kubeadm.k8s.io/v1beta3 referenced by the updated version.

Regards,
-Chris

fabio.sasso

@chrispokorni said:
Hi @ojmendezz,

I have seen this behavior once before, and it was related to an incompatibility between kubeadm.k8s.io/v1beta2 from the early version and kubeadm.k8s.io/v1beta3 referenced by the updated version.

Regards,
-Chris

I confirm this, I got the same error trying to join a cluster create with kubeadm 1.22 with a worker running kubeadm 1.21

THANKS!

chrispokorni

Hi @fabio.sasso,

The recommendation is to join a cluster with components on the same version across nodes.

Regards,
-Chris