CORRECT TEXT
Score: 7%
Task
Given an existing Kubernetes cluster running version 1.20.0, upgrade all of the Kubernetes control plane and node components on the master node only to version 1.20.1.
Be sure to drain the master node before upgrading it and uncordon it after the upgrade.
You are also expected to upgrade kubelet and kubectl on the master node.
Answer: SOLUTION:
[student@node-1] > ssh ek8s
kubectl cordon k8s-master
kubectl drain k8s-master –delete-local-data –ignore-daemonsets –force
apt-get install kubeadm=1.20.1-00 kubelet=1.20.1-00 kubectl=1.20.1-00 — disableexcludes=kubernetes
kubeadm upgrade apply 1.20.1 –etcd-upgrade=false
systemctl daemon-reload
systemctl restart kubelet
kubectl uncordon k8s-master
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