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https://github.com/k3s-io/kubernetes.git
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Add e2e to check that hostIPs and Downward API works
This commit is contained in:
Shiming Zhang
parent
14b09c414a
commit
b2613dd381
286
test/e2e_node/pod_host_ips.go
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286
test/e2e_node/pod_host_ips.go
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/*
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Copyright 2023 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package e2enode
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import (
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"context"
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"fmt"
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"github.com/onsi/ginkgo/v2"
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"github.com/onsi/gomega"
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v1 "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/api/resource"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/util/uuid"
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netutils "k8s.io/utils/net"
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kubefeatures "k8s.io/kubernetes/pkg/features"
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kubeletconfig "k8s.io/kubernetes/pkg/kubelet/apis/config"
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"k8s.io/kubernetes/test/e2e/framework"
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e2enetwork "k8s.io/kubernetes/test/e2e/framework/network"
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e2enode "k8s.io/kubernetes/test/e2e/framework/node"
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e2epod "k8s.io/kubernetes/test/e2e/framework/pod"
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e2epodoutput "k8s.io/kubernetes/test/e2e/framework/pod/output"
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"k8s.io/kubernetes/test/e2e/network/common"
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imageutils "k8s.io/kubernetes/test/utils/image"
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)
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var _ = common.SIGDescribe("Dual Stack Host IP [Feature:PodHostIPs]", func() {
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f := framework.NewDefaultFramework("dualstack")
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ginkgo.Context("when creating a Pod, it has no PodHostIPs feature", func() {
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tempSetCurrentKubeletConfig(f, func(ctx context.Context, initialConfig *kubeletconfig.KubeletConfiguration) {
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initialConfig.FeatureGates = map[string]bool{
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string(kubefeatures.PodHostIPs): false,
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}
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})
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ginkgo.It("should create pod, add host ips is empty", func(ctx context.Context) {
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podName := "pod-dualstack-host-ips"
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pod := &v1.Pod{
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ObjectMeta: metav1.ObjectMeta{
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Name: podName,
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Labels: map[string]string{"test": "dualstack-host-ips"},
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},
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Spec: v1.PodSpec{
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Containers: []v1.Container{
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{
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Name: "dualstack-host-ips",
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Image: imageutils.GetE2EImage(imageutils.Agnhost),
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},
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},
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},
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}
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ginkgo.By("submitting the pod to kubernetes")
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podClient := e2epod.NewPodClient(f)
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p := podClient.CreateSync(ctx, pod)
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gomega.Expect(p.Status.HostIP).ShouldNot(gomega.BeEquivalentTo(""))
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gomega.Expect(p.Status.HostIPs).Should(gomega.BeNil())
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ginkgo.By("deleting the pod")
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err := podClient.Delete(ctx, pod.Name, *metav1.NewDeleteOptions(30))
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framework.ExpectNoError(err, "failed to delete pod")
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})
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ginkgo.It("should create pod with hostNetwork, add host ips is empty", func(ctx context.Context) {
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podName := "pod-dualstack-host-ips"
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pod := &v1.Pod{
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ObjectMeta: metav1.ObjectMeta{
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Name: podName,
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Labels: map[string]string{"test": "dualstack-host-ips"},
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},
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Spec: v1.PodSpec{
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Containers: []v1.Container{
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{
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Name: "dualstack-host-ips",
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Image: imageutils.GetE2EImage(imageutils.Agnhost),
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},
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},
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HostNetwork: true,
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},
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}
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ginkgo.By("submitting the pod to kubernetes")
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podClient := e2epod.NewPodClient(f)
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p := podClient.CreateSync(ctx, pod)
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gomega.Expect(p.Status.HostIP).ShouldNot(gomega.BeEquivalentTo(""))
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gomega.Expect(p.Status.HostIPs).Should(gomega.BeNil())
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ginkgo.By("deleting the pod")
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err := podClient.Delete(ctx, pod.Name, *metav1.NewDeleteOptions(30))
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framework.ExpectNoError(err, "failed to delete pod")
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})
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})
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ginkgo.Context("when creating a Pod, it has PodHostIPs feature", func() {
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tempSetCurrentKubeletConfig(f, func(ctx context.Context, initialConfig *kubeletconfig.KubeletConfiguration) {
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initialConfig.FeatureGates = map[string]bool{
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string(kubefeatures.PodHostIPs): true,
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}
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})
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ginkgo.It("should create pod, add ipv6 and ipv4 ip to host ips", func(ctx context.Context) {
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podName := "pod-dualstack-host-ips"
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pod := &v1.Pod{
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ObjectMeta: metav1.ObjectMeta{
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Name: podName,
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Labels: map[string]string{"test": "dualstack-host-ips"},
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},
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Spec: v1.PodSpec{
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Containers: []v1.Container{
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{
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Name: "dualstack-host-ips",
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Image: imageutils.GetE2EImage(imageutils.Agnhost),
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},
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},
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},
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}
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ginkgo.By("submitting the pod to kubernetes")
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podClient := e2epod.NewPodClient(f)
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p := podClient.CreateSync(ctx, pod)
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gomega.Expect(p.Status.HostIP).ShouldNot(gomega.BeEquivalentTo(""))
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gomega.Expect(p.Status.HostIPs).ShouldNot(gomega.BeNil())
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// validate first ip in HostIPs is same as HostIP
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framework.ExpectEqual(p.Status.HostIP, p.Status.HostIPs[0].IP)
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if len(p.Status.HostIPs) > 1 {
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// assert 2 host ips belong to different families
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if netutils.IsIPv4String(p.Status.HostIPs[0].IP) == netutils.IsIPv4String(p.Status.HostIPs[1].IP) {
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framework.Failf("both internalIPs %s and %s belong to the same families", p.Status.HostIPs[0].IP, p.Status.HostIPs[1].IP)
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}
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}
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nodeList, err := e2enode.GetReadySchedulableNodes(ctx, f.ClientSet)
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framework.ExpectNoError(err)
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for _, node := range nodeList.Items {
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if node.Name == p.Spec.NodeName {
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nodeIPs := []string{}
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for _, address := range node.Status.Addresses {
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if address.Type == v1.NodeInternalIP {
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nodeIPs = append(nodeIPs, address.Address)
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}
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}
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gomega.Expect(p.Status.HostIPs).Should(gomega.Equal(nodeIPs))
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break
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}
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}
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ginkgo.By("deleting the pod")
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err = podClient.Delete(ctx, pod.Name, *metav1.NewDeleteOptions(30))
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framework.ExpectNoError(err, "failed to delete pod")
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})
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ginkgo.It("should create pod with hostNetwork, add ipv6 and ipv4 ip to host ips", func(ctx context.Context) {
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podName := "pod-dualstack-host-ips"
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pod := &v1.Pod{
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ObjectMeta: metav1.ObjectMeta{
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Name: podName,
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Labels: map[string]string{"test": "dualstack-host-ips"},
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},
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Spec: v1.PodSpec{
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Containers: []v1.Container{
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{
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Name: "dualstack-host-ips",
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Image: imageutils.GetE2EImage(imageutils.Agnhost),
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},
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},
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HostNetwork: true,
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},
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}
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ginkgo.By("submitting the pod to kubernetes")
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podClient := e2epod.NewPodClient(f)
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p := podClient.CreateSync(ctx, pod)
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gomega.Expect(p.Status.HostIP).ShouldNot(gomega.BeEquivalentTo(""))
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gomega.Expect(p.Status.HostIPs).ShouldNot(gomega.BeNil())
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// validate first ip in HostIPs is same as HostIP
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framework.ExpectEqual(p.Status.HostIP, p.Status.HostIPs[0].IP)
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if len(p.Status.HostIPs) > 1 {
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// assert 2 host ips belong to different families
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if netutils.IsIPv4String(p.Status.HostIPs[0].IP) == netutils.IsIPv4String(p.Status.HostIPs[1].IP) {
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framework.Failf("both internalIPs %s and %s belong to the same families", p.Status.HostIPs[0].IP, p.Status.HostIPs[1].IP)
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}
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}
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nodeList, err := e2enode.GetReadySchedulableNodes(ctx, f.ClientSet)
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framework.ExpectNoError(err)
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for _, node := range nodeList.Items {
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if node.Name == p.Spec.NodeName {
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nodeIPs := []string{}
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for _, address := range node.Status.Addresses {
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if address.Type == v1.NodeInternalIP {
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nodeIPs = append(nodeIPs, address.Address)
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}
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}
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gomega.Expect(p.Status.HostIPs).Should(gomega.Equal(nodeIPs))
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break
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}
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}
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ginkgo.By("deleting the pod")
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err = podClient.Delete(ctx, pod.Name, *metav1.NewDeleteOptions(30))
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framework.ExpectNoError(err, "failed to delete pod")
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})
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ginkgo.It("should provide hostIPs as an env var", func(ctx context.Context) {
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podName := "downward-api-" + string(uuid.NewUUID())
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env := []v1.EnvVar{
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{
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Name: "HOST_IPS",
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ValueFrom: &v1.EnvVarSource{
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FieldRef: &v1.ObjectFieldSelector{
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APIVersion: "v1",
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FieldPath: "status.hostIPs",
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},
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},
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},
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}
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expectations := []string{
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fmt.Sprintf("HOST_IPS=%v|%v", e2enetwork.RegexIPv4, e2enetwork.RegexIPv6),
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}
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testDownwardAPI(ctx, f, podName, env, expectations)
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})
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})
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})
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func testDownwardAPI(ctx context.Context, f *framework.Framework, podName string, env []v1.EnvVar, expectations []string) {
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pod := &v1.Pod{
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ObjectMeta: metav1.ObjectMeta{
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Name: podName,
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Labels: map[string]string{"name": podName},
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},
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Spec: v1.PodSpec{
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Containers: []v1.Container{
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{
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Name: "dapi-container",
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Image: imageutils.GetE2EImage(imageutils.BusyBox),
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Command: []string{"sh", "-c", "env"},
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Resources: v1.ResourceRequirements{
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Requests: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("250m"),
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v1.ResourceMemory: resource.MustParse("32Mi"),
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},
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Limits: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("1250m"),
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v1.ResourceMemory: resource.MustParse("64Mi"),
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},
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},
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Env: env,
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},
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},
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RestartPolicy: v1.RestartPolicyNever,
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},
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}
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e2epodoutput.TestContainerOutputRegexp(ctx, f, "downward api env vars", pod, 0, expectations)
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}
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