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docs: Document Helm 3.17.1 breaking changes (#22283)

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Signed-off-by: reggie-k <[email protected]>
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Regina Voloshin
2025-03-11 17:27:04 -04:00
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@@ -198,6 +198,17 @@ spec:
namespace: guestbook
```
### Upgraded Helm version with breaking changes
Helm was upgraded to 3.17.1.
This may require changing your `values.yaml` files for subcharts, if the `values.yaml` contain a section with a `null` object.
See related issue in [Helm GitHub repository](https://github.com/helm/helm/issues/12469)
See Helm 3.17.1 [release notes](https://github.com/helm/helm/releases/tag/v3.17.1)
Example of such a [problem and resolution](https://github.com/argoproj/argo-cd/pull/22035/files)
Explanation:
- Prior to Helm 3.17.1, `null` object in `values.yaml` resulted in a warning: `cannot overwrite table with non table` upon performing `helm template`, and the resulting K8s object was not overridden with the invalid `null` value.
- In Helm 3.17.1, this behavior changed and `null` object in `values.yaml` still results in this warning upon performing `helm template`, but the resulting K8s object will be overridden with the invalid `null` value.
- To resolve the issue, identify `values.yaml` with `null` object values, and remove those `null` values.
## Other changes
### Using `cluster.inClusterEnabled: "false"`