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TRG 5.03 - Version strategy

StatusCreatedPost-History
Active10-Nov-2022Initial Release

Why​

Correct versioning is crucial when testing and deploying the application. It helps to identify issues with the chart or the application image. Upgrading or rolling back of the deployment would lead to problems without proper versioning.

For more details, see the official documentation

Description​

There are two different version properties for a Helm chart:

  • Chart version
  • App version

Chart version​

It is located in the Chart.yaml under the version property. It requires semantic versioning format. The Chart version has to be increased every time one of the following file is changed:

  • Chart.yaml
  • values.yaml
  • templates directory

App version​

The default app version value is located in the Chart.yaml file under the appVersion property. Any format can be used, but the appVersion and the image tag of your docker images should be aligned. This means, the appVersion should be used in the templates as the default image tag for the deployment/pod. Every time the appVersion property is upgraded the chart version number has to be increased as well.