Fix up pod hostIPs e2e

- The feature is GA so there's no feature gate so it doesn't need any
  special label now.

- The test is not dual-stack-specific, so it shouldn't claim to be.

- It asserted node-IP-assigning behavior that is not guaranteed to
  work on all clouds. (Among other things: that there are no "extra"
  InternalIPs, and that there are InternalIPs of every supported IP
  family, rather than there only being ExternalIPs of some families.)

test/e2e/feature/feature.go

@@ -229,9 +229,6 @@ var (
 	// TODO: document the feature (owning SIG, when to use this feature for a test)
 	PodGarbageCollector = framework.WithFeature(framework.ValidFeatures.Add("PodGarbageCollector"))
 
-	// TODO: document the feature (owning SIG, when to use this feature for a test)
-	PodHostIPs = framework.WithFeature(framework.ValidFeatures.Add("PodHostIPs"))
-
 	// TODO: document the feature (owning SIG, when to use this feature for a test)
 	PodLifecycleSleepAction = framework.WithFeature(framework.ValidFeatures.Add("PodLifecycleSleepAction"))
 

test/e2e/nodefeature/nodefeature.go

@@ -85,9 +85,6 @@ var (
 	// TODO: document the feature (owning SIG, when to use this feature for a test)
 	PodDisruptionConditions = framework.WithNodeFeature(framework.ValidNodeFeatures.Add("PodDisruptionConditions"))
 
-	// TODO: document the feature (owning SIG, when to use this feature for a test)
-	PodHostIPs = framework.WithNodeFeature(framework.ValidNodeFeatures.Add("PodHostIPs"))
-
 	// TODO: document the feature (owning SIG, when to use this feature for a test)
 	PodResources = framework.WithNodeFeature(framework.ValidNodeFeatures.Add("PodResources"))
 

test/e2e_node/pod_host_ips.go

@@ -31,7 +31,7 @@ import (
 
 	utilfeature "k8s.io/apiserver/pkg/util/feature"
 	kubefeatures "k8s.io/kubernetes/pkg/features"
-	"k8s.io/kubernetes/test/e2e/feature"
+	utilnode "k8s.io/kubernetes/pkg/util/node"
 	"k8s.io/kubernetes/test/e2e/framework"
 	e2enetwork "k8s.io/kubernetes/test/e2e/framework/network"
 	e2enode "k8s.io/kubernetes/test/e2e/framework/node"
@@ -39,18 +39,16 @@ import (
 	e2epodoutput "k8s.io/kubernetes/test/e2e/framework/pod/output"
 	e2eskipper "k8s.io/kubernetes/test/e2e/framework/skipper"
 	"k8s.io/kubernetes/test/e2e/network/common"
-	"k8s.io/kubernetes/test/e2e/nodefeature"
 	imageutils "k8s.io/kubernetes/test/utils/image"
 	admissionapi "k8s.io/pod-security-admission/api"
 )
 
-var _ = common.SIGDescribe("DualStack Host IP", framework.WithSerial(), nodefeature.PodHostIPs, feature.PodHostIPs, func() {
+var _ = common.SIGDescribe("Pod Host IPs", framework.WithSerial(), func() {
-	f := framework.NewDefaultFramework("dualstack")
+	f := framework.NewDefaultFramework("host-ips")
 	f.NamespacePodSecurityLevel = admissionapi.LevelPrivileged
 
 	ginkgo.Context("when creating a Pod", func() {
-		ginkgo.It("should create pod, add ipv6 and ipv4 ip to host ips", func(ctx context.Context) {
+		ginkgo.It("should add node IPs of all supported families to hostIPs of pod-network pod", func(ctx context.Context) {
-
 			podName := "pod-dualstack-host-ips"
 
 			pod := genPodHostIPs(podName+string(uuid.NewUUID()), false)
@@ -71,28 +69,17 @@ var _ = common.SIGDescribe("DualStack Host IP", framework.WithSerial(), nodefeat
 				}
 			}
 
-			nodeList, err := e2enode.GetReadySchedulableNodes(ctx, f.ClientSet)
+			ginkgo.By("comparing pod.Status.HostIPs against node.Status.Addresses")
-			framework.ExpectNoError(err)
+			hostIPs, err := genHostIPsForNode(ctx, f, p.Spec.NodeName)
-			for _, node := range nodeList.Items {
+			framework.ExpectNoError(err, "failed to fetch node IPs")
-				if node.Name == p.Spec.NodeName {
+			gomega.Expect(p.Status.HostIPs).Should(gomega.Equal(hostIPs))
-					nodeIPs := []v1.HostIP{}
-					for _, address := range node.Status.Addresses {
-						if address.Type == v1.NodeInternalIP {
-							nodeIPs = append(nodeIPs, v1.HostIP{IP: address.Address})
-						}
-					}
-					gomega.Expect(p.Status.HostIPs).Should(gomega.Equal(nodeIPs))
-					break
-				}
-			}
 
 			ginkgo.By("deleting the pod")
 			err = podClient.Delete(ctx, pod.Name, *metav1.NewDeleteOptions(1))
 			framework.ExpectNoError(err, "failed to delete pod")
 		})
 
-		ginkgo.It("should create pod with hostNetwork, add ipv6 and ipv4 ip to host ips", func(ctx context.Context) {
+		ginkgo.It("should add node IPs of all supported families to hostIPs of host-network pod", func(ctx context.Context) {
-
 			podName := "pod-dualstack-host-ips"
 
 			pod := genPodHostIPs(podName+string(uuid.NewUUID()), true)
@@ -113,20 +100,10 @@ var _ = common.SIGDescribe("DualStack Host IP", framework.WithSerial(), nodefeat
 				}
 			}
 
-			nodeList, err := e2enode.GetReadySchedulableNodes(ctx, f.ClientSet)
+			ginkgo.By("comparing pod.Status.HostIPs against node.Status.Addresses")
-			framework.ExpectNoError(err)
+			hostIPs, err := genHostIPsForNode(ctx, f, p.Spec.NodeName)
-			for _, node := range nodeList.Items {
+			framework.ExpectNoError(err, "failed to fetch node IPs")
-				if node.Name == p.Spec.NodeName {
+			gomega.Expect(p.Status.HostIPs).Should(gomega.Equal(hostIPs))
-					nodeIPs := []v1.HostIP{}
-					for _, address := range node.Status.Addresses {
-						if address.Type == v1.NodeInternalIP {
-							nodeIPs = append(nodeIPs, v1.HostIP{IP: address.Address})
-						}
-					}
-					gomega.Expect(p.Status.HostIPs).Should(gomega.Equal(nodeIPs))
-					break
-				}
-			}
 
 			ginkgo.By("deleting the pod")
 			err = podClient.Delete(ctx, pod.Name, *metav1.NewDeleteOptions(1))
@@ -179,6 +156,27 @@ func genPodHostIPs(podName string, hostNetwork bool) *v1.Pod {
 	}
 }
 
+func genHostIPsForNode(ctx context.Context, f *framework.Framework, nodeName string) ([]v1.HostIP, error) {
+	nodeList, err := e2enode.GetReadySchedulableNodes(ctx, f.ClientSet)
+	if err != nil {
+		return nil, err
+	}
+	for _, node := range nodeList.Items {
+		if node.Name == nodeName {
+			nodeIPs, err := utilnode.GetNodeHostIPs(&node)
+			if err != nil {
+				return nil, err
+			}
+			hostIPs := []v1.HostIP{}
+			for _, ip := range nodeIPs {
+				hostIPs = append(hostIPs, v1.HostIP{IP: ip.String()})
+			}
+			return hostIPs, nil
+		}
+	}
+	return nil, fmt.Errorf("no such node %q", nodeName)
+}
+
 func testDownwardAPI(ctx context.Context, f *framework.Framework, podName string, env []v1.EnvVar, expectations []string) {
 	pod := &v1.Pod{
 		ObjectMeta: metav1.ObjectMeta{