Udemy CKA 강의 정리 127: Practice Test - Cluster Upgrade

해당 내용은 Udemy의 Certified Kubernetes Administrator (CKA) with Practice Tests 강의를 공부한 내용입니다. 내용을 그대로 번역하기보다는, 제가 이해하기 쉬운 대로 수정한 부분들이 있습니다.

⚠️ 영어 독해가 많이 부족합니다. 틀린 내용이 있으면 알려주시면 감사하겠습니다.

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Q1. This lab tests your skills on upgrading a kubernetes cluster. We have a production cluster with applications running on it. Let us explore the setup first.

 

Q2. How many nodes are part of this cluster?

 

Q3. How many nodes can host workloads in this cluster?

 

Q4. How many applications are hosted on the cluster?

 

Q5. What nodes are the pods hosted on?

 

Q6. You are tasked to upgrade the cluster. Users accessing the applications must not be impacted, and you cannot provision new VMs. What strategy would you use to upgrade the cluster?

 

Q7. What is the latest stable version of Kubernetes as of today?

 

Q8. What is the latest version available for an upgrade with the current version of the kubeadm tool installed?

 

Q9. We will be upgrading the controlplane node first. Drain the controlplane node of workloads and mark it UnSchedulable

 

Q10. Upgrade the controlplane components to exact version v1.26.0

 

Q11. Mark the controlplane node as "Schedulable" again

 

Q12. Next is the worker node. Drain the worker node of the workloads and mark it UnSchedulable

 

Q13. Upgrade the worker node to the exact version v1.26.0

 

Q14. Remove the restriction and mark the worker node as schedulable again.