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This commit is contained in:
Antoine Pelisse
2021-01-14 10:54:51 -08:00
parent a51a653764
commit fb1a0ca2e2
1 changed files with 12 additions and 1 deletions
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content/en/docs/tasks/extend-kubernetes/custom-resources/custom-resource-definitions.md
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@@ -314,7 +314,18 @@ CustomResourceDefinitions store validated resource data in the cluster's persist
{{< note >}}
CRDs converted from `apiextensions.k8s.io/v1beta1` to `apiextensions.k8s.io/v1` might lack structural schemas, and `spec.preserveUnknownFields` might be `true`.
For legacy CustomResourceDefinitions created as `apiextensions.k8s.io/v1beta1` where spec.preserveUnknownFields is set to true, pruning is not enabled and you can store arbitrary data. For compatibility with `apiextensions.k8s.io/v1`, you should update your custom resources definition to (1) have a structural OpenAPI schema, and (2) you should set spec.preserveUnknownFields to false. In Kubernetes 1.22 the `apiextensions.k8s.io/v1beta1` API will be removed, and every CustomResourceDefinition must be created via `apiextensions/v1`, and this enforces both (1) and (2).
For legacy CustomResourceDefinition objects created as
`apiextensions.k8s.io/v1beta1` with `spec.preserveUnknownFields` set to
`true`, the following is also true:
* Pruning is not enabled.
* You can store arbitrary data.
For compatibility with `apiextensions.k8s.io/v1`, update your custom
resource definitions to:
1. Use a structural OpenAPI schema.
2. Set `spec.preserveUnknownFields` to `false`.
{{< /note >}}
If you save the following YAML to `my-crontab.yaml`: