You are working for a Travel company and your travel portal application is a collection of microservices that run on Oracle Cloud Infrastructure Container Engine for Kubernetes. As per the recent security overview, you have noticed that Oracle has published a newer image of the Operating System used by the worker nodes. You want to make sure that your application doesn’t face any downtime but at the same time the worker nodes gets upgraded to the latest version of the Operating System.
What should you do to get this upgrade done without application downtime? (Choose the best answer.)
Select an option, then click Submit answer.
-
○
1. Shutdown the worker nodes
2. Create a new node pool
3. Manually schedule the pods on the newly built node pool -
○
1. Create a new node pool using the latest available Operating System image.
2. Run kubectl cordonagainst all the worker nodes in the old pool to stop any new application pods to get scheduled
3. Run kubectl drain––delete–local–data ––force ––ignore–daemonsets to evict any Pods that are running
4. Delete the old node pool -
○
1. Create a new node pool using the latest available Operating System image
2. Run kubectl taint nodes ––all node–role.kubernetes.io/master–
3. Delete the old node pool -
○
1. Run kubectl cordon
against all the worker nodes in the old pool to stop any new application pods to get scheduled
2. Run kubectl drain––delete–local–data ––force ––ignore–daemonsets to evict any Pods that are running
3. Download the patches for the new Operating System image
4. Patch the worker nodes to the latest Operating System image
