Upgrading Kubeadm clusters

https://kubernetes.io/docs/tasks/administer-cluster/kubeadm/kubeadm-upgrade/

https://kubernetes.io/docs/tasks/administer-cluster/kubeadm/kubeadm-upgrade/#call-kubeadm-upgrade-1

Install Network solution

https://kubernetes.io/docs/tasks/administer-cluster/network-policy-provider/

Rolling updates of DaemonSets

https://kubernetes.io/docs/tasks/manage-daemon/update-daemon-set/

Debug workder nodes

• Check Kubelet service in worker nodes

  service kubelet status
  service kubelet start
      
  journalctl -u kubelet
  

• Check kubelet service’s certifcates

  check config file for certs path: /var/lib/kubelet/config.yaml
  

• Check kubelet service logs

  [sudo] journalctl -u kubelet[.service]
  

  Note: Any monidifications to kubelet service, pls restart kubelet

  service kubelet restart