Worker Node Failure

Take me to the Lecture
Lets check the status of the Nodes in the cluster, are they Ready or NotReady
```
kubectl get nodes
```
If they are NotReady then check the LastHeartbeatTime of the node to find out the time when node might have crashed
```
kubectl describe node worker-1
```
Check the possible CPU and MEMORY using top and df -h
Check the status and the logs of the kubelet for the possible issues.
```
serivce kubelet status
```
```
sudo journalctl -u kubelet
```
Check the kubelet Certificates, they are not expired, and in the right group and issued by the right CA.
```
openssl x509 -in /var/lib/kubelet/worker-1.crt -text
```