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Helm Academy · Lesson

Previewing Changes with helm diff

Surfacing the impact of an upgrade in a PR.

See the Change Before You Ship It

Upgrading blind is scary. The helm diff plugin shows exactly what an upgrade would add, change, or remove before you touch the cluster. 👀

diff Is a Plugin, Not Built In

Unlike lint or template, helm diff ships as a community plugin. You install it once, and it then behaves like any native Helm subcommand.

helm plugin install https://github.com/databus23/helm-diff

All lessons in this course

  1. Lint and Template Gates in CI
  2. Previewing Changes with helm diff
  3. Automated Deploys with upgrade --install --atomic
  4. Publishing Charts from a Release Job
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