Control Plane Failure

  • Check the status of the nodes:
kubectl get nodes
  • Check the status of the pods:
kubectl get pods
  • Check Controlplane Pods, if the cluster was deployed with the kubeadm tool:
kubectl get pods -n kube-system
  • If the Controlplane components are deployed as Services, check the status of the services:
service kube-apiserver status

service kube-controller-manager status

service kube-scheduler status

* On the Worker Nodes, check the `kubelet` and the `kube-proxy` services:

service kubelet status

service kube-proxy status

  • Check the logs of the Controlplane Components:

    • In the case of kube-adm, check these logs:
kubectl logs kube-apiserver-master -n kube-system
  • On the Master Nodes, can also view the logs via the following command:
sudo journalctl -u kube-apiserver
  • Reference this documentation for more information:

https://kubernetes.io/docs/tasks/debug/debug-cluster/

Updated: