Chapter 3 – Maintaining Kubernetes Clusters

You have two virtual machines: master-0 and worker-0. Please complete the following mock scenarios.

Scenario 1

SSH to the master-0 node, check the current kubeadm version, and upgrade to the latest kubeadm version. Check the current kubectl version, and upgrade to the latest kubectl version.

Start by checking the current version with the following commands once we’re in the master node:

   kubeadm version 
   kubectl version  

Check out the latest available versions:

  apt update 
  apt-cache madison kubeadm 

Upgrade the kubeadm using the following command:

apt-mark unhold kubeadm && \ 
apt-get update && apt-get install -y kubeadm=1.xx.x-00 && \ 
apt-mark hold kubeadm 

Check if your cluster can be upgraded, and the available versions that your cluster can be upgraded to by using the following command:

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