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☑️ Prevent deprecated APIs in Kubernetes v1.16

Kubernetes version 1.16 stopped serving several APIs for different resource types. When deploying a resource with a deprecated API version, the Kubernetes engine will reject it.

The following resources are deprecated in version 1.16:

API versionResource kind
apiextensions.k8s.io/v1beta1CustomResourceDefinition
admissionregistration.k8s.io/v1beta1MutatingWebhookConfiguration
ValidatingWebhookConfiguration
caution

Kubernetes v1.16 is no longer (officially) supported since 2 September 2020, So if you are still running this version, consider upgrading it as soon as possible.

Targeted objects by this rule (types of kind): (See table above)

Complexity: easy (What does this mean?)

Policy as code identifier: DEPRECATION_VERSION_1.16


This rule will fail

If one of the deprecated API versions is used for a resource:

apiVersion: apiextensions.k8s.io/v1beta1
kind: CustomResourceDefinition

Rule output in the CLI

$ datree test *.yaml

>> File: failExample.yaml
❌ Prevent use of deprecated APIs in Kubernetes v1.16 [1 occurrence]
💡 Incorrect value for key `apiVersion` - the version of the resource you are trying to use is deprecated in k8s v1.16

How to fix this failure

Use a supported API version instead of the deprecated one:

Deprecated API versionSupported API version
apiextensions.k8s.io/v1beta1apiextensions.k8s.io/v1
admissionregistration.k8s.io/v1beta1admissionregistration.k8s.io/v1

Example:

apiVersion: apiextensions.k8s.io/v1
kind: CustomResourceDefinition

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