Change:
<ins> /* Copyright 2022 The Kubernetes Authors. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. */ package openapi import ( "context" "encoding/json" "testing" "time" "github.com/stretchr/testify/assert" apiextensionsv1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1" "k8s.io/apiextensions-apiserver/pkg/client/clientset/clientset" "k8s.io/apiextensions-apiserver/test/integration/fixtures" metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" genericfeatures "k8s.io/apiserver/pkg/features" utilfeature "k8s.io/apiserver/pkg/util/feature" "k8s.io/client-go/dynamic" kubernetes "k8s.io/client-go/kubernetes" featuregatetesting "k8s.io/component-base/featuregate/testing" "k8s.io/kube-openapi/pkg/spec3" apiservertesting "k8s.io/kubernetes/cmd/kube-apiserver/app/testing" "k8s.io/kubernetes/test/integration/framework" ) const scaleSchemaName = "io.k8s.api.autoscaling.v1.Scale" const statusSchemaName = "io.k8s.apimachinery.pkg.apis.meta.v1.Status" const objectMetaSchemaName = "io.k8s.apimachinery.pkg.apis.meta.v1.ObjectMeta" func TestOpenAPIV3MultipleCRDsSameGV(t *testing.T) { defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, genericfeatures.OpenAPIV3, true)() server, err := apiservertesting.StartTestServer(t, apiservertesting.NewDefaultTestServerOptions(), nil, framework.SharedEtcd()) if err != nil { t.Fatal(err) } defer server.TearDownFn() config := server.ClientConfig apiExtensionClient, err := clientset.NewForConfig(config) if err != nil { t.Fatal(err) } dynamicClient, err := dynamic.NewForConfig(config) if err != nil { t.Fatal(err) } clientset, err := kubernetes.NewForConfig(config) if err != nil { t.Fatal(err) } fooWithSubresourceCRD := &apiextensionsv1.CustomResourceDefinition{ ObjectMeta: metav1.ObjectMeta{ Name: "foosubs.cr.bar.com", }, Spec: apiextensionsv1.CustomResourceDefinitionSpec{ Group: "cr.bar.com", Scope: apiextensionsv1.NamespaceScoped, Names: apiextensionsv1.CustomResourceDefinitionNames{ Plural: "foosubs", Kind:   "FooSub", }, Versions: []apiextensionsv1.CustomResourceDefinitionVersion{ { Name:    "v1", Served:  true, Storage: true, Schema: &apiextensionsv1.CustomResourceValidation{ OpenAPIV3Schema: &apiextensionsv1.JSONSchemaProps{ Type: "object", Properties: map[string]apiextensionsv1.JSONSchemaProps{ "spec": { Type: "object", Properties: map[string]apiextensionsv1.JSONSchemaProps{ "replicas": { Type: "integer", }, }, }, "status": { Type: "object", Properties: map[string]apiextensionsv1.JSONSchemaProps{ "replicas": { Type: "integer", }, }, }, }, }, }, Subresources: &apiextensionsv1.CustomResourceSubresources{ Status: &apiextensionsv1.CustomResourceSubresourceStatus{}, Scale: &apiextensionsv1.CustomResourceSubresourceScale{ SpecReplicasPath:   ".spec.replicas", StatusReplicasPath: ".status.replicas", }, }, }, }, }, } bazWithSubresourceCRD := &apiextensionsv1.CustomResourceDefinition{ ObjectMeta: metav1.ObjectMeta{ Name: "bazsubs.cr.bar.com", }, Spec: apiextensionsv1.CustomResourceDefinitionSpec{ Group: "cr.bar.com", Scope: apiextensionsv1.NamespaceScoped, Names: apiextensionsv1.CustomResourceDefinitionNames{ Plural: "bazsubs", Kind:   "BazSub", }, Versions: []apiextensionsv1.CustomResourceDefinitionVersion{ { Name:    "v1", Served:  true, Storage: true, Schema: &apiextensionsv1.CustomResourceValidation{ OpenAPIV3Schema: &apiextensionsv1.JSONSchemaProps{ Type: "object", Properties: map[string]apiextensionsv1.JSONSchemaProps{ "spec": { Type: "object", Properties: map[string]apiextensionsv1.JSONSchemaProps{ "replicas": { Type: "integer", }, }, }, "status": { Type: "object", Properties: map[string]apiextensionsv1.JSONSchemaProps{ "replicas": { Type: "integer", }, }, }, }, }, }, Subresources: &apiextensionsv1.CustomResourceSubresources{ Status: &apiextensionsv1.CustomResourceSubresourceStatus{}, Scale: &apiextensionsv1.CustomResourceSubresourceScale{ SpecReplicasPath:   ".spec.replicas", StatusReplicasPath: ".status.replicas", }, }, }, }, }, } _, err = fixtures.CreateNewV1CustomResourceDefinition(fooWithSubresourceCRD, apiExtensionClient, dynamicClient) if err != nil { t.Fatal(err) } _, err = fixtures.CreateNewV1CustomResourceDefinition(bazWithSubresourceCRD, apiExtensionClient, dynamicClient) if err != nil { t.Fatal(err) } // It takes a second for CRD specs to propagate to the aggregator time.Sleep(4 * time.Second) jsonData, err := clientset.RESTClient().Get().AbsPath("/openapi/v3/apis/cr.bar.com/v1").Do(context.TODO()).Raw() if err != nil { t.Fatal(err) } openAPISpec := spec3.OpenAPI{} err = json.Unmarshal(jsonData, &openAPISpec) if err != nil { t.Fatal(err) } // Ensure both CRD schemas are present in the OpenAPI // Scale, status, and metadata dependencies must also be present assert.Contains(t, openAPISpec.Components.Schemas, scaleSchemaName) assert.Contains(t, openAPISpec.Components.Schemas, statusSchemaName) assert.Contains(t, openAPISpec.Components.Schemas, objectMetaSchemaName) assert.Contains(t, openAPISpec.Components.Schemas, "com.bar.cr.v1.BazSub") assert.Contains(t, openAPISpec.Components.Schemas, "com.bar.cr.v1.FooSub") } </ins>

Discussion:
Related to Seeing the following errors in kube-apiserver logs when CRDs are applied: No errors in logs Apply any CRD manifest No response <details</details<details</details<details</details<detailsRancher RKE2 </details<detailscontainerd 1.6.4 </details<detailscanal </details
/sig api-machinery
/assign
Did this cause any specific trouble to your cluster I'm curious what the impact/severity of this is.
Everything seems to work fine, but there's a bunch of log spew every time a CRD manifest is loaded. In K3s we mix all the control-plane component logs together in a single pair of stdout/stderr streams so it's quite noisy, compared to previous releases. The fact that these come out at WARN level with a scary prefix makes them look pretty serious, and I expect we will get a fair bit of users asking about it once we release.
/triage accepted