Ask an OpenShift Admin (Ep 44): Kubernetes API Deprecations

Are your Operators ready for the release of Kubernetes 1.22? It's a good idea to double-check because several APIs that have previously been marked as deprecated will be removed and are no longer available in 1.22. To help us cover this change Rob Szumski, Senior Manager, Openshift Product Management, joins us to discuss the details and ensure we avoid removed API versions. We'll also look at the steps needed to upgrade to newer APIs because Operators projects using these APIs versions will not work on Kubernetes 1.22 or any cluster vendor using Kubernetes version 1.22, such as OpenShift 4.9+.

YouTube: https://youtu.be/w7IiR-poSco

Transcript

1. Changes to v1.22 and OpenShift 4.9
   Kubernetes API
   deprecations
   Rob Szumski
   OpenShift Product Management
   1
   

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2. 2
   Operators that use the beta versions of the following APIs will
   accordingly need to be updated to use the stable APIs. These APIs are
   commonly used by Operators:
   ▸ CustomResourceDefinition (CRD)
   ▸ ValidatingWebhookConfiguration
   ▸ MutatingWebhookConfiguration
   ▸ CertificateSigningRequest
   API deprecations in v1.22 and OpenShift 4.9
   

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3. 3
   ▸ Grep for apiextensions.k8s.io/v1beta1
   ▸ Use the Operator SDK: operator-sdk bundle validate
   ./bundle --select-optional suite=operatorframework
   --optional-values=k8s-version=1.22
   How to check your Operator usage?
   

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4. 4
   How to check your live usage?
   

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5. 5
   $ oc get apirequestcount.apiserver.openshift.io
   $ oc get apirequestcount.apiserver.openshift.io/
   validatingwebhookconfigurations.v1beta1.admissionregistration.k8s.io
   NAME REMOVEDINRELEASE CURRENTHOUR LAST24H
   validatingwebhookconfigurations 1.22 4 362
   How to check your live usage?
   

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6. 6
   ValidatingWebhookConfiguration and MutatingWebhookConfiguration
   are both automatically addressed by OLM and will be created using the
   correct API version if they are managed as part of the operator
   packaging format.
   ▸ Get this for free from our TLS cert management features used for
   metrics collection
   Operator Lifecycle Manager (OLM) autoconversion
   

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   7
   Red Hat is the world’s leading provider of enterprise
   open source software solutions. Award-winning
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   Red Hat a trusted adviser to the Fortune 500.
   Thank you
   

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