Explain values precedence in Helm.
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Quick Answer
Lowest to highest: chart values.yaml, then -f files (in order), then --set flags.
Detailed Answer
Defaults in the chart are overridden by any -f values files you pass (later files win over earlier), and --set overrides everything. Keep environment differences in values files (values-prod.yaml), not forked templates, so the chart stays single-source.
Code Example
helm upgrade --install app ./chart -f values-prod.yaml --set image.tag=1.4.2
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Interview Tip
State the exact order — interviewers probe this.
helmvaluesprecedence