Example #1
0
func checkServiceConnectivity(serverFramework, clientFramework *e2e.Framework, numNodes int) error {
	nodes, err := e2e.GetReadyNodes(serverFramework)
	if err != nil {
		e2e.Failf("Failed to list nodes: %v", err)
	}
	var serverNode, clientNode *api.Node
	serverNode = &nodes.Items[0]
	if numNodes == 2 {
		if len(nodes.Items) == 1 {
			e2e.Skipf("Only one node is available in this environment")
		}
		clientNode = &nodes.Items[1]
	} else {
		clientNode = serverNode
	}

	podName := "service-webserver"
	defer serverFramework.Client.Pods(serverFramework.Namespace.Name).Delete(podName, nil)
	ip := launchWebserverService(serverFramework, podName, serverNode.Name)

	return checkConnectivityToHost(clientFramework, clientNode.Name, "service-wget", ip, 10)
}
Example #2
0
func checkPodIsolation(f1, f2 *e2e.Framework, numNodes int) error {
	nodes, err := e2e.GetReadyNodes(f1)
	if err != nil {
		e2e.Failf("Failed to list nodes: %v", err)
	}
	var serverNode, clientNode *api.Node
	serverNode = &nodes.Items[0]
	if numNodes == 2 {
		if len(nodes.Items) == 1 {
			e2e.Skipf("Only one node is available in this environment")
		}
		clientNode = &nodes.Items[1]
	} else {
		clientNode = serverNode
	}

	podName := "isolation-webserver"
	defer f1.Client.Pods(f1.Namespace.Name).Delete(podName, nil)
	ip := e2e.LaunchWebserverPod(f1, podName, serverNode.Name)

	return checkConnectivityToHost(f2, clientNode.Name, "isolation-wget", ip, 10)
}
Example #3
0
		})
		if err != nil {
			framework.Failf("unable to create test service named [%s] %v", svc.Name, err)
		}

		// Clean up service
		defer func() {
			By("Cleaning up the service")
			if err = f.Client.Services(f.Namespace.Name).Delete(svc.Name); err != nil {
				framework.Failf("unable to delete svc %v: %v", svc.Name, err)
			}
		}()

		By("Creating a webserver (pending) pod on each node")

		nodes, err := framework.GetReadyNodes(f)
		framework.ExpectNoError(err)

		if len(nodes.Items) == 1 {
			// in general, the test requires two nodes. But for local development, often a one node cluster
			// is created, for simplicity and speed. (see issue #10012). We permit one-node test
			// only in some cases
			if !framework.ProviderIs("local") {
				framework.Failf(fmt.Sprintf("The test requires two Ready nodes on %s, but found just one.", framework.TestContext.Provider))
			}
			framework.Logf("Only one ready node is detected. The test has limited scope in such setting. " +
				"Rerun it with at least two nodes to get complete coverage.")
		}

		podNames := LaunchNetTestPodPerNode(f, nodes, svcname, "1.8")
Example #4
0
func runClientServerBandwidthMeasurement(f *framework.Framework, numClient int, maxBandwidthBits int64) {
	// TODO: Make this a function parameter, once we distribute iperf endpoints, possibly via session affinity.
	numServer := 1

	It(fmt.Sprintf("should transfer ~ 1GB onto the service endpoint %v servers (maximum of %v clients)", numServer, numClient), func() {
		nodes := framework.ListSchedulableNodesOrDie(f.Client)
		totalPods := len(nodes.Items)
		// for a single service, we expect to divide bandwidth between the network.  Very crude estimate.
		expectedBandwidth := int(float64(maxBandwidthBits) / float64(totalPods))
		Expect(totalPods).NotTo(Equal(0))
		appName := "iperf-e2e"
		err, _ := f.CreateServiceForSimpleAppWithPods(
			8001,
			8002,
			appName,
			func(n api.Node) api.PodSpec {
				return api.PodSpec{
					Containers: []api.Container{{
						Name:  "iperf-server",
						Image: "gcr.io/google_containers/iperf:e2e",
						Args: []string{
							"/bin/sh",
							"-c",
							"/usr/local/bin/iperf -s -p 8001 ",
						},
						Ports: []api.ContainerPort{{ContainerPort: 8001}},
					}},
					NodeName:      n.Name,
					RestartPolicy: api.RestartPolicyOnFailure,
				}
			},
			// this will be used to generate the -service name which all iperf clients point at.
			numServer, // Generally should be 1 server unless we do affinity or use a version of iperf that supports LB
			true,      // Make sure we wait, otherwise all the clients will die and need to restart.
		)

		if err != nil {
			framework.Failf("Fatal error waiting for iperf server endpoint : %v", err)
		}

		iperfClientPodLabels := f.CreatePodsPerNodeForSimpleApp(
			"iperf-e2e-cli",
			func(n api.Node) api.PodSpec {
				return api.PodSpec{
					Containers: []api.Container{
						{
							Name:  "iperf-client",
							Image: "gcr.io/google_containers/iperf:e2e",
							Args: []string{
								"/bin/sh",
								"-c",
								"/usr/local/bin/iperf -c service-for-" + appName + " -p 8002 --reportstyle C && sleep 5",
							},
						},
					},
					RestartPolicy: api.RestartPolicyOnFailure, // let them successfully die.
				}
			},
			numClient,
		)

		framework.Logf("Reading all perf results to stdout.")
		framework.Logf("date,cli,cliPort,server,serverPort,id,interval,transferBits,bandwidthBits")

		// Calculate expected number of clients based on total nodes.
		expectedCli := func() int {
			nodes, err := framework.GetReadyNodes(f)
			framework.ExpectNoError(err)
			return int(math.Min(float64(len(nodes.Items)), float64(numClient)))
		}()

		// Extra 1/10 second per client.
		iperfTimeout := smallClusterTimeout + (time.Duration(expectedCli/10) * time.Second)
		iperfResults := &IPerfResults{}

		iperfClusterVerification := f.NewClusterVerification(
			framework.PodStateVerification{
				Selectors:   iperfClientPodLabels,
				ValidPhases: []api.PodPhase{api.PodSucceeded},
			},
		)

		pods, err2 := iperfClusterVerification.WaitFor(expectedCli, iperfTimeout)
		if err2 != nil {
			framework.Failf("Error in wait...")
		} else if len(pods) < expectedCli {
			framework.Failf("IPerf restuls : Only got %v out of %v, after waiting %v", len(pods), expectedCli, iperfTimeout)
		} else {
			// For each builds up a collection of IPerfRecords
			iperfClusterVerification.ForEach(
				func(p api.Pod) {
					resultS, err := framework.LookForStringInLog(f.Namespace.Name, p.Name, "iperf-client", "0-", 1*time.Second)
					if err == nil {
						framework.Logf(resultS)
						iperfResults.Add(NewIPerf(resultS))
					} else {
						framework.Failf("Unexpected error, %v when running forEach on the pods.", err)
					}
				})
		}
		fmt.Println("[begin] Node,Bandwith CSV")
		fmt.Println(iperfResults.ToTSV())
		fmt.Println("[end] Node,Bandwith CSV")

		for ipClient, bandwidth := range iperfResults.BandwidthMap {
			framework.Logf("%v had bandwidth %v.  Ratio to expected (%v) was %f", ipClient, bandwidth, expectedBandwidth, float64(bandwidth)/float64(expectedBandwidth))
		}
	})
}