I had the same issue as Ashok Kumar. solved it with solution from Mohammed Ayman . . .

Kubernetes-Slack Discussions
#1

Fredrik Gjellestad:
i had the same issue as Ashok Kumar. solved it with solution from Mohammed Ayman. BUT my node is not reaching the ready state. when i type “kubectl describe node controlplane” i see this

Ready False Thu, 12 Aug 2021 20:54:18 +0000 Thu, 12 Aug 2021 20:48:55 +0000 KubeletNotReady container runtime network not ready: NetworkReady=false reason:NetworkPluginNotReady message:docker: network plugin is not ready: cni config uninitialized

#2

Fredrik Gjellestad:
my bad, coding past my bedtime. if i had read the output from kubeadm init it CLEARLY says that i need to deploy a pod network to the cluster.

solved it with installing flannel

kubectl apply -f <https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml>

#3

Fredrik Gjellestad:
when i press “check” i get “Master node not initialized” still tho. even tho kubectl get nodes show it as ready

#4

Ashok Kumar:
Hi Fredik, I am also getting check failed, even when control node is ready

#5

Fredrik Gjellestad:
i just pressed “skip” and was able to complete all the other questions tho.

#6

Ashok Kumar:
lol, @Mumshad Mannambeth is this issue with LAB?

#7

Mumshad Mannambeth:
Hi, sorry we will get this checked.