146 lines
4.3 KiB
Go
146 lines
4.3 KiB
Go
/*
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Copyright 2018 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 windows
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import (
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"fmt"
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v1 "k8s.io/api/core/v1"
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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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"k8s.io/kubernetes/test/e2e/framework"
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e2eskipper "k8s.io/kubernetes/test/e2e/framework/skipper"
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imageutils "k8s.io/kubernetes/test/utils/image"
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"github.com/onsi/ginkgo"
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"github.com/onsi/gomega"
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)
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const (
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linuxOS = "linux"
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windowsOS = "windows"
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)
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var (
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windowsBusyBoximage = imageutils.GetE2EImage(imageutils.Agnhost)
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linuxBusyBoxImage = imageutils.GetE2EImage(imageutils.Nginx)
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)
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var _ = SIGDescribe("Hybrid cluster network", func() {
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f := framework.NewDefaultFramework("hybrid-network")
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ginkgo.BeforeEach(func() {
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e2eskipper.SkipUnlessNodeOSDistroIs("windows")
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})
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ginkgo.Context("for all supported CNIs", func() {
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ginkgo.It("should have stable networking for Linux and Windows pods", func() {
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linuxPod := createTestPod(f, linuxBusyBoxImage, linuxOS)
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ginkgo.By("creating a linux pod and waiting for it to be running")
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linuxPod = f.PodClient().CreateSync(linuxPod)
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windowsPod := createTestPod(f, windowsBusyBoximage, windowsOS)
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windowsPod.Spec.Containers[0].Args = []string{"test-webserver"}
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ginkgo.By("creating a windows pod and waiting for it to be running")
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windowsPod = f.PodClient().CreateSync(windowsPod)
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ginkgo.By("verifying pod external connectivity to the internet")
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ginkgo.By("checking connectivity to 8.8.8.8 53 (google.com) from Linux")
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assertConsistentConnectivity(f, linuxPod.ObjectMeta.Name, linuxOS, linuxCheck("8.8.8.8", 53))
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ginkgo.By("checking connectivity to www.google.com from Windows")
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assertConsistentConnectivity(f, windowsPod.ObjectMeta.Name, windowsOS, windowsCheck("www.google.com"))
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ginkgo.By("verifying pod internal connectivity to the cluster dataplane")
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ginkgo.By("checking connectivity from Linux to Windows")
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assertConsistentConnectivity(f, linuxPod.ObjectMeta.Name, linuxOS, linuxCheck(windowsPod.Status.PodIP, 80))
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ginkgo.By("checking connectivity from Windows to Linux")
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assertConsistentConnectivity(f, windowsPod.ObjectMeta.Name, windowsOS, windowsCheck(linuxPod.Status.PodIP))
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})
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})
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})
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var (
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duration = "10s"
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pollInterval = "1s"
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timeoutSeconds = 10
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)
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func assertConsistentConnectivity(f *framework.Framework, podName string, os string, cmd []string) {
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gomega.Consistently(func() error {
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ginkgo.By(fmt.Sprintf("checking connectivity of %s-container in %s", os, podName))
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// TODO, we should be retrying this similar to what is done in DialFromNode, in the test/e2e/networking/networking.go tests
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_, _, err := f.ExecCommandInContainerWithFullOutput(podName, os+"-container", cmd...)
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return err
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}, duration, pollInterval).ShouldNot(gomega.HaveOccurred())
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}
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func linuxCheck(address string, port int) []string {
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nc := fmt.Sprintf("nc -vz %s %v -w %v", address, port, timeoutSeconds)
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cmd := []string{"/bin/sh", "-c", nc}
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return cmd
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}
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func windowsCheck(address string) []string {
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curl := fmt.Sprintf("curl.exe %s --connect-timeout %v --fail", address, timeoutSeconds)
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cmd := []string{"cmd", "/c", curl}
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return cmd
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}
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func createTestPod(f *framework.Framework, image string, os string) *v1.Pod {
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containerName := fmt.Sprintf("%s-container", os)
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podName := "pod-" + string(uuid.NewUUID())
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pod := &v1.Pod{
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TypeMeta: metav1.TypeMeta{
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Kind: "Pod",
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APIVersion: "v1",
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},
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ObjectMeta: metav1.ObjectMeta{
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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: containerName,
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Image: image,
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Ports: []v1.ContainerPort{{ContainerPort: 80}},
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},
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},
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NodeSelector: map[string]string{
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"kubernetes.io/os": os,
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},
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},
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}
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if os == linuxOS {
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pod.Spec.Tolerations = []v1.Toleration{
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{
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Operator: v1.TolerationOpExists,
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Effect: v1.TaintEffectNoSchedule,
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},
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}
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}
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return pod
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}
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