This CKA practice question tests your understanding of workloads and scheduling. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
You have a DaemonSet that runs a logging agent on all nodes. You want to update the agent's image to a new version. Which update strategy allows you to control the rollout by manually updating each node's DaemonSet pod?
BlueGreen
Why wrong: BlueGreen is not a built-in DaemonSet update strategy.
Recreate
Why wrong: Recreate is not a valid DaemonSet update strategy; it is used for Deployments.
RollingUpdate with maxUnavailable: 0
Why wrong: This strategy still updates pods automatically, though it can be tuned but not fully manual.
OnDelete
OnDelete requires manual deletion of pods to trigger update, providing node-by-node control.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
OnDelete
Option D is correct because the DaemonSet's OnDelete update strategy requires you to manually delete each DaemonSet pod to trigger its recreation with the new image. This gives you explicit, per-node control over the rollout, which matches the requirement of manually updating each node's pod.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
BlueGreen
Why it's wrong here
BlueGreen is not a built-in DaemonSet update strategy.
Recreate
Why it's wrong here
Recreate is not a valid DaemonSet update strategy; it is used for Deployments.
RollingUpdate with maxUnavailable: 0
Why it's wrong here
This strategy still updates pods automatically, though it can be tuned but not fully manual.
OnDelete
Why this is correct
OnDelete requires manual deletion of pods to trigger update, providing node-by-node control.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
The trap here is that candidates often confuse DaemonSet update strategies with Deployment strategies, assuming RollingUpdate or Recreate are available for DaemonSets, while the OnDelete strategy is unique to DaemonSets and StatefulSets for manual control.
Detailed technical explanation
DaemonSets support two update strategies: RollingUpdate (default) and OnDelete. With OnDelete, the DaemonSet controller does not automatically replace pods when the pod template changes; instead, it waits for you to delete individual pods, after which the controller creates a new pod with the updated spec. This is useful in scenarios where you need to coordinate updates with external systems or validate node readiness before proceeding, such as in edge computing or IoT deployments where node connectivity is intermittent.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the CKA exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
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FAQ
Workloads and Scheduling — This question tests Workloads and Scheduling — Read the scenario before looking for a memorised answer..
The correct answer is: OnDelete — Option D is correct because the DaemonSet's OnDelete update strategy requires you to manually delete each DaemonSet pod to trigger its recreation with the new image. This gives you explicit, per-node control over the rollout, which matches the requirement of manually updating each node's pod.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
This CKA practice question is part of Courseiva's free CNCF certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CKA exam.
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