Control Plane Troubleshooting Commands

Some commands to help troubleshoot control-plane component failure in a cluster that was set up using the kubeadm tool:

Check the status of the nodes:

kubectl get nodes

Check the status of the pods

kubectl get pods

Check controlplane pods

kubectl get pods -n=kube-system

Check ControlPlane Services:

service kube-apiserver status

service kube-controller-manager status

service kube-scheduler status

service kubelet status

service kube-proxy status

Check logs of controlplane components

kubectl logs kube-apiserver-master -n kube-system

sudo journalctl -u kube-apiserver