Helm Chart Templating Cheat Sheet

Last Updated: November 21, 2025

Focus Areas

Focus
`Factor common logic into helper templates`
`Sanitize values.yaml and keep schemas strict`


         helm lint charts/my-app

Catch template errors locally


         helm template my-app charts/my-app -f values.yaml

Render manifests for review


         helm upgrade --install my-app ./charts/my-app -f production.yaml

Deploy with Helm

Compose templates carefully, rely on helpers, and surface lint warnings in CI.

💡 Pro Tip: Factor repeated snippets into `_helpers.tpl` and use `helm template --debug` before release.