Kcna Kubernetes And Cloud Native Associate · Free Practice Question Medium
Question 53
You are working on a Kubernetes cluster that hosts a logging system. The logging system uses Persistent Volumes (PV) to store logs, which must be retained even if the logging Pods are deleted. You also want to ensure that if the application is deleted, the data remains accessible for future use, but the volume should not be automatically reused by other applications. Which of the following volume reclaim policies would best meet the requirement of preserving the data after the Pods and application are deleted?
-
A
Use the
Deletereclaim policy to automatically remove the volume after the application is deleted. -
B
Use the
Recyclereclaim policy to clean and reuse the volume once the application is deleted. -
C
Use the
Retainreclaim policy to keep the volume after the application is deleted and prevent it from being reused automatically. -
D
Use the
Immediatereclaim policy to instantly make the volume available for reuse after the application is deleted.
Reveal correct answer
Correct answer: C
A.
The Delete reclaim policy deletes the Persistent Volume along with the associated storage once the Persistent Volume Claim is deleted. This is unsuitable for scenarios where data must be preserved, as it would lead to data loss.
B.
The Recycle reclaim policy wipes the data by performing a basic scrub of the volume (deleting all files) and then makes it available for new claims. This is not appropriate for scenarios where you need to retain the logs for future use.
C.
The Retain reclaim policy is the best choice for preserving the volume after the application is deleted and preventing it from being automatically reused. With this policy, the Persistent Volume is not deleted or cleaned after the associated Persistent Volume Claim (PVC) is removed. The data remains intact, and an administrator must manually reclaim the volume for future use, ensuring data is retained for long-term analysis or recovery.
D.
There is no Immediate reclaim policy in Kubernetes. The closest functionality would be the Recycle or Delete policies, but neither preserves data for future use as required by the scenario. This answer is both incorrect and misleading.
Discussion
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