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7.7Best Practices Summary
- Always lint before rendering --
helm lint --strictcatches structural issues instantly. - Render with all value files -- A chart that works with defaults but breaks with production values is a deployment risk.
- Pipe rendered output to kubeconform -- This catches Kubernetes schema issues that Helm does not check.
- Write unit tests for conditionals -- Every
if/elsein your templates needs a test for both branches. - Test value validation -- If certain value combinations are invalid, ensure templates fail with clear error messages.
- Use chart-testing in CI -- Actual installation tests catch issues that static analysis misses.
- Pin dependency versions -- Use exact or range versions in Chart.yaml, never
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