KCNA Cloud Native Application Delivery Practice Question
A team uses Helm to manage their Kubernetes applications. They need to upgrade a release and want to reuse the values from the previous release while overriding a specific value. Which helm command should they use?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
helm upgrade --reuse-values my-release ./charts/app --set image.tag=v2
The --reuse-values flag tells Helm to reuse the last release's values and merge any provided overrides. This is the correct approach to preserve existing values while updating a specific one.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
helm upgrade --reset-values my-release ./charts/app --set image.tag=v2
Why it's wrong here
--reset-values causes Helm to reset values to the defaults from the chart, ignoring previous overrides.
- ✓
helm upgrade --reuse-values my-release ./charts/app --set image.tag=v2
Why this is correct
--reuse-values retains the previous release's values and merges the new --set overrides.
- ✗
helm upgrade --atomic my-release ./charts/app --set image.tag=v2
Why it's wrong here
--atomic ensures rollback on failure but does not control value reuse.
- ✗
helm upgrade --history-max 5 my-release ./charts/app --set image.tag=v2
Why it's wrong here
--history-max limits the number of revisions kept, but does not affect value reuse.
Go deeper
Related to this question
About these practice questions
This KCNA question is part of Courseiva's 833-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This KCNA 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 KCNA exam.