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API versions

Supported API Versions

The Performance Addon Operator supports v2, v1 and v1alpha1 Performance Profile versions. There are no differences between the v1 and v1alpha1 versions, the upgrade has been made in order to mark the Performance Profile API as stable. The v2 API introduces the new optional boolean field GloballyDisableIrqLoadBalancing with the default value false.

Upgrade from v1alpha1 to v1.

When upgrading from an older Performance Addon Operator version supporting only v1alpha1 API to a newer one supporting also the v1 API, the existing v1alpha1 Performance Profiles will be converted on-the-fly using a "None" Conversion strategy and served to the Performance Addon Operator as v1.

Upgrade from v1alpha1 and v1 to v2

When upgrading from an older Performance Addon Operator version, the existing v1 and v1alpha1 profiles will be converted using a Conversion Webhook that injects the GloballyDisableIrqLoadBalancing field with the value true in order to keep the legacy behaviour, see Performance Profile.

Q&A

What happens in practice if I install a v2-enabled PAO on a cluster? What should I expect?

  • PAO will expect v2 Performance Profiles and query only them. Existing vi and v1alpha1 profiles will be served as v2 and PAO works with them as usual.

What happens if I submit a v1alpha1 profile, will I always get back a v2 profile?

  • Any of the existent Performance Profile CRs can be retrieved as v2, v1 and v1alpha1 since the Performance Profile CRD supports all API versions. For example if we have a "manual" Performance Profile in the system we can query it as v1, v2 and v1alpha1:

    oc get performanceprofiles.v2.performance.openshift.io manual

    oc get performanceprofiles.v1.performance.openshift.io manual

    oc get performanceprofiles.v1alpha1.performance.openshift.io manual

    However, the Performance Addon Operator will use all the existent Performance Profiles as v2 no matter if they have been submitted as v1alpha1 or v1.

Where can I find more information on API versioning?