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migration_test.go
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/*
* This file is part of the KubeVirt project
*
* 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.
*
* Copyright 2018 Red Hat, Inc.
*
*/
package tests_test
import (
"context"
"crypto/tls"
"encoding/json"
"path/filepath"
"strconv"
"strings"
"sync"
"kubevirt.io/kubevirt/tests/util"
"kubevirt.io/kubevirt/tools/vms-generator/utils"
"fmt"
"time"
expect "github.com/google/goexpect"
. "github.com/onsi/ginkgo"
"github.com/onsi/ginkgo/extensions/table"
. "github.com/onsi/gomega"
k8sv1 "k8s.io/api/core/v1"
"k8s.io/api/policy/v1beta1"
"k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/api/resource"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/rand"
"k8s.io/utils/pointer"
"kubevirt.io/kubevirt/tests/libvmi"
storageframework "kubevirt.io/kubevirt/tests/framework/storage"
"k8s.io/apimachinery/pkg/util/strategicpatch"
. "kubevirt.io/kubevirt/tests/framework/matcher"
"kubevirt.io/kubevirt/pkg/virt-launcher/virtwrap/api"
v1 "kubevirt.io/client-go/api/v1"
"kubevirt.io/client-go/kubecli"
"kubevirt.io/client-go/log"
cdiv1 "kubevirt.io/containerized-data-importer/pkg/apis/core/v1beta1"
"kubevirt.io/kubevirt/pkg/certificates/triple"
"kubevirt.io/kubevirt/pkg/certificates/triple/cert"
"kubevirt.io/kubevirt/pkg/util/cluster"
migrations "kubevirt.io/kubevirt/pkg/util/migrations"
"kubevirt.io/kubevirt/tests"
"kubevirt.io/kubevirt/tests/console"
cd "kubevirt.io/kubevirt/tests/containerdisk"
"kubevirt.io/kubevirt/tests/flags"
"kubevirt.io/kubevirt/tests/libnet"
)
const (
fedoraVMSize = "256M"
secretDiskSerial = "D23YZ9W6WA5DJ487"
stressDefaultVMSize = "100"
stressLargeVMSize = "400"
stressDefaultTimeout = 1600
)
var _ = Describe("[Serial][rfe_id:393][crit:high][vendor:[email protected]][level:system][sig-compute] VM Live Migration", func() {
var virtClient kubecli.KubevirtClient
var originalKubeVirtConfig *v1.KubeVirt
var err error
setMastersUnschedulable := func(mode bool) {
masters, err := virtClient.CoreV1().Nodes().List(context.Background(), metav1.ListOptions{LabelSelector: `node-role.kubernetes.io/master`})
Expect(err).ShouldNot(HaveOccurred(), "could not list master nodes")
Expect(len(masters.Items)).Should(BeNumerically(">=", 1))
for _, node := range masters.Items {
nodeCopy := node.DeepCopy()
nodeCopy.Spec.Unschedulable = mode
oldData, err := json.Marshal(node)
Expect(err).ShouldNot(HaveOccurred())
newData, err := json.Marshal(nodeCopy)
Expect(err).ShouldNot(HaveOccurred())
patch, err := strategicpatch.CreateTwoWayMergePatch(oldData, newData, node)
Expect(err).ShouldNot(HaveOccurred())
_, err = virtClient.CoreV1().Nodes().Patch(context.Background(), node.Name, types.StrategicMergePatchType, patch, metav1.PatchOptions{})
Expect(err).ShouldNot(HaveOccurred())
}
}
drainNode := func(node string) {
By(fmt.Sprintf("Draining node %s", node))
// we can't really expect an error during node drain because vms with eviction strategy can be migrated by the
// time that we call it.
k8sClient := tests.GetK8sCmdClient()
if k8sClient == "oc" {
tests.RunCommandWithNS("", k8sClient, "adm", "drain", node, "--delete-local-data",
"--ignore-daemonsets=true", "--force", "--timeout=180s")
} else {
tests.RunCommandWithNS("", k8sClient, "drain", node, "--delete-local-data",
"--ignore-daemonsets=true", "--force", "--timeout=180s")
}
}
confirmMigrationMode := func(vmi *v1.VirtualMachineInstance, expectedMode v1.MigrationMode) {
By("Retrieving the VMI post migration")
vmi, err = virtClient.VirtualMachineInstance(vmi.Namespace).Get(vmi.Name, &metav1.GetOptions{})
Expect(err).ToNot(HaveOccurred())
By("Verifying the VMI's migration mode")
Expect(vmi.Status.MigrationState.Mode).To(Equal(expectedMode))
}
tests.BeforeAll(func() {
virtClient, err = kubecli.GetKubevirtClient()
util.PanicOnError(err)
originalKubeVirtConfig = util.GetCurrentKv(virtClient)
})
defaultKVConfig := func() v1.KubeVirtConfiguration {
kvc := originalKubeVirtConfig.DeepCopy()
if kvc.Spec.Configuration.MigrationConfiguration == nil {
kvc.Spec.Configuration.MigrationConfiguration = &v1.MigrationConfiguration{}
}
if kvc.Spec.Configuration.DeveloperConfiguration == nil {
kvc.Spec.Configuration.DeveloperConfiguration = &v1.DeveloperConfiguration{}
}
if kvc.Spec.Configuration.NetworkConfiguration == nil {
kvc.Spec.Configuration.NetworkConfiguration = &v1.NetworkConfiguration{}
}
return kvc.Spec.Configuration
}
BeforeEach(func() {
tests.BeforeTestCleanup()
tests.SkipIfMigrationIsNotPossible()
// Taints defined by k8s are special and can't be applied manually.
// Temporarily configure KubeVirt to use something else for the duration of these tests.
if tests.IsUsingBuiltinNodeDrainKey() {
drain := "kubevirt.io/drain"
cfg := defaultKVConfig()
cfg.MigrationConfiguration.NodeDrainTaintKey = &drain
tests.UpdateKubeVirtConfigValueAndWait(cfg)
}
})
AfterEach(func() {
currKubeVirt := util.GetCurrentKv(virtClient)
// if revision changed, patch data and reload everything
if currKubeVirt.ResourceVersion != originalKubeVirtConfig.ResourceVersion {
originalKubeVirtConfig = tests.UpdateKubeVirtConfigValueAndWait(originalKubeVirtConfig.Spec.Configuration)
}
})
runVMIAndExpectLaunch := func(vmi *v1.VirtualMachineInstance, timeout int) *v1.VirtualMachineInstance {
return tests.RunVMIAndExpectLaunchWithIgnoreWarningArg(vmi, timeout, false)
}
runVMIAndExpectLaunchIgnoreWarnings := func(vmi *v1.VirtualMachineInstance, timeout int) *v1.VirtualMachineInstance {
return tests.RunVMIAndExpectLaunchWithIgnoreWarningArg(vmi, timeout, true)
}
confirmVMIPostMigrationFailed := func(vmi *v1.VirtualMachineInstance, migrationUID string) {
By("Retrieving the VMI post migration")
vmi, err = virtClient.VirtualMachineInstance(vmi.Namespace).Get(vmi.Name, &metav1.GetOptions{})
Expect(err).ToNot(HaveOccurred())
By("Verifying the VMI's migration state")
Expect(vmi.Status.MigrationState).ToNot(BeNil())
Expect(vmi.Status.MigrationState.StartTimestamp).ToNot(BeNil())
Expect(vmi.Status.MigrationState.EndTimestamp).ToNot(BeNil())
Expect(vmi.Status.MigrationState.SourceNode).To(Equal(vmi.Status.NodeName))
Expect(vmi.Status.MigrationState.TargetNode).ToNot(Equal(vmi.Status.MigrationState.SourceNode))
Expect(vmi.Status.MigrationState.Completed).To(BeTrue())
Expect(vmi.Status.MigrationState.Failed).To(BeTrue())
Expect(vmi.Status.MigrationState.TargetNodeAddress).ToNot(Equal(""))
Expect(string(vmi.Status.MigrationState.MigrationUID)).To(Equal(migrationUID))
By("Verifying the VMI's is in the running state")
Expect(vmi.Status.Phase).To(Equal(v1.Running))
}
confirmVMIPostMigrationAborted := func(vmi *v1.VirtualMachineInstance, migrationUID string, timeout int) *v1.VirtualMachineInstance {
By("Waiting until the migration is completed")
Eventually(func() bool {
vmi, err = virtClient.VirtualMachineInstance(vmi.Namespace).Get(vmi.Name, &metav1.GetOptions{})
Expect(err).ToNot(HaveOccurred())
if vmi.Status.MigrationState != nil && vmi.Status.MigrationState.Completed &&
vmi.Status.MigrationState.AbortStatus == v1.MigrationAbortSucceeded {
return true
}
return false
}, timeout, 1*time.Second).Should(BeTrue())
By("Retrieving the VMI post migration")
vmi, err = virtClient.VirtualMachineInstance(vmi.Namespace).Get(vmi.Name, &metav1.GetOptions{})
Expect(err).ToNot(HaveOccurred())
By("Verifying the VMI's migration state")
Expect(vmi.Status.MigrationState).ToNot(BeNil())
Expect(vmi.Status.MigrationState.StartTimestamp).ToNot(BeNil())
Expect(vmi.Status.MigrationState.EndTimestamp).ToNot(BeNil())
Expect(vmi.Status.MigrationState.SourceNode).To(Equal(vmi.Status.NodeName))
Expect(vmi.Status.MigrationState.TargetNode).ToNot(Equal(vmi.Status.MigrationState.SourceNode))
Expect(vmi.Status.MigrationState.TargetNodeAddress).ToNot(Equal(""))
Expect(string(vmi.Status.MigrationState.MigrationUID)).To(Equal(migrationUID))
Expect(vmi.Status.MigrationState.Failed).To(BeTrue())
Expect(vmi.Status.MigrationState.AbortRequested).To(BeTrue())
By("Verifying the VMI's is in the running state")
Expect(vmi.Status.Phase).To(Equal(v1.Running))
return vmi
}
runAndCancelMigration := func(migration *v1.VirtualMachineInstanceMigration, vmi *v1.VirtualMachineInstance, timeout int) *v1.VirtualMachineInstanceMigration {
By("Starting a Migration")
Eventually(func() error {
migration, err = virtClient.VirtualMachineInstanceMigration(migration.Namespace).Create(migration)
return err
}, timeout, 1*time.Second).ShouldNot(HaveOccurred())
By("Waiting until the Migration is Running")
Eventually(func() bool {
migration, err := virtClient.VirtualMachineInstanceMigration(migration.Namespace).Get(migration.Name, &metav1.GetOptions{})
Expect(err).ToNot(HaveOccurred())
Expect(migration.Status.Phase).ToNot(Equal(v1.MigrationFailed))
if migration.Status.Phase == v1.MigrationRunning {
vmi, err = virtClient.VirtualMachineInstance(vmi.Namespace).Get(vmi.Name, &metav1.GetOptions{})
Expect(err).ToNot(HaveOccurred())
if vmi.Status.MigrationState.Completed != true {
return true
}
}
return false
}, timeout, 1*time.Second).Should(BeTrue())
By("Cancelling a Migration")
Expect(virtClient.VirtualMachineInstanceMigration(migration.Namespace).Delete(migration.Name, &metav1.DeleteOptions{})).To(Succeed(), "Migration should be deleted successfully")
return migration
}
runAndImmediatelyCancelMigration := func(migration *v1.VirtualMachineInstanceMigration, vmi *v1.VirtualMachineInstance, timeout int) *v1.VirtualMachineInstanceMigration {
By("Starting a Migration")
Eventually(func() error {
migration, err = virtClient.VirtualMachineInstanceMigration(migration.Namespace).Create(migration)
return err
}, timeout, 1*time.Second).ShouldNot(HaveOccurred())
By("Waiting until the Migration is Running")
Eventually(func() bool {
migration, err := virtClient.VirtualMachineInstanceMigration(migration.Namespace).Get(migration.Name, &metav1.GetOptions{})
Expect(err).ToNot(HaveOccurred())
return string(migration.UID) != ""
}, timeout, 1*time.Second).Should(BeTrue())
By("Cancelling a Migration")
Expect(virtClient.VirtualMachineInstanceMigration(migration.Namespace).Delete(migration.Name, &metav1.DeleteOptions{})).To(Succeed(), "Migration should be deleted successfully")
return migration
}
runMigrationAndExpectFailure := func(migration *v1.VirtualMachineInstanceMigration, timeout int) string {
By("Starting a Migration")
Eventually(func() error {
migration, err = virtClient.VirtualMachineInstanceMigration(migration.Namespace).Create(migration)
return err
}, timeout, 1*time.Second).ShouldNot(HaveOccurred())
By("Waiting until the Migration Completes")
uid := ""
Eventually(func() v1.VirtualMachineInstanceMigrationPhase {
migration, err := virtClient.VirtualMachineInstanceMigration(migration.Namespace).Get(migration.Name, &metav1.GetOptions{})
Expect(err).ToNot(HaveOccurred())
phase := migration.Status.Phase
Expect(phase).NotTo(Equal(v1.MigrationSucceeded))
uid = string(migration.UID)
return phase
}, timeout, 1*time.Second).Should(Equal(v1.MigrationFailed))
return uid
}
runStressTest := func(vmi *v1.VirtualMachineInstance, vmsize string, stressTimeoutSeconds int) {
By("Run a stress test to dirty some pages and slow down the migration")
stressCmd := fmt.Sprintf("stress --vm 1 --vm-bytes %sM --vm-keep --timeout %ds&\n", vmsize, stressTimeoutSeconds)
Expect(console.SafeExpectBatch(vmi, []expect.Batcher{
&expect.BSnd{S: "\n"},
&expect.BExp{R: console.PromptExpression},
&expect.BSnd{S: stressCmd},
&expect.BExp{R: console.PromptExpression},
}, 15)).To(Succeed(), "should run a stress test")
// give stress tool some time to trash more memory pages before returning control to next steps
if stressTimeoutSeconds < 15 {
time.Sleep(time.Duration(stressTimeoutSeconds) * time.Second)
} else {
time.Sleep(15 * time.Second)
}
}
getLibvirtdPid := func(pod *k8sv1.Pod) string {
stdout, _, err := tests.ExecuteCommandOnPodV2(virtClient, pod, "compute",
[]string{
"ps",
"-x",
})
Expect(err).ToNot(HaveOccurred())
pid := ""
for _, str := range strings.Split(stdout, "\n") {
if !strings.Contains(str, "libvirtd") {
continue
}
words := strings.Fields(str)
Expect(len(words)).To(Equal(5))
// verify it is numeric
_, err = strconv.Atoi(words[0])
Expect(err).ToNot(HaveOccurred(), "should have found pid for libvirtd that is numeric")
pid = words[0]
break
}
Expect(pid).ToNot(Equal(""), "libvirtd pid not found")
return pid
}
deleteDataVolume := func(dv *cdiv1.DataVolume) {
if dv != nil {
By("Deleting the DataVolume")
ExpectWithOffset(1, virtClient.CdiClient().CdiV1beta1().DataVolumes(dv.Namespace).Delete(context.Background(), dv.Name, metav1.DeleteOptions{})).To(Succeed(), metav1.DeleteOptions{})
}
}
Describe("Starting a VirtualMachineInstance ", func() {
Context("with a bridge network interface", func() {
It("[test_id:3226]should reject a migration of a vmi with a bridge interface", func() {
vmi := tests.NewRandomVMIWithEphemeralDisk(cd.ContainerDiskFor(cd.ContainerDiskAlpine))
vmi.Spec.Domain.Devices.Interfaces = []v1.Interface{
{
Name: "default",
InterfaceBindingMethod: v1.InterfaceBindingMethod{
Bridge: &v1.InterfaceBridge{},
},
},
}
vmi = runVMIAndExpectLaunch(vmi, 240)
// Verify console on last iteration to verify the VirtualMachineInstance is still booting properly
// after being restarted multiple times
By("Checking that the VirtualMachineInstance console has expected output")
Expect(console.LoginToAlpine(vmi)).To(Succeed())
gotExpectedCondition := false
for _, c := range vmi.Status.Conditions {
if c.Type == v1.VirtualMachineInstanceIsMigratable {
Expect(c.Status).To(Equal(k8sv1.ConditionFalse))
gotExpectedCondition = true
}
}
Expect(gotExpectedCondition).Should(BeTrue())
// execute a migration, wait for finalized state
migration := tests.NewRandomMigration(vmi.Name, vmi.Namespace)
By("Starting a Migration")
migration, err = virtClient.VirtualMachineInstanceMigration(migration.Namespace).Create(migration)
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("InterfaceNotLiveMigratable"))
// delete VMI
By("Deleting the VMI")
Expect(virtClient.VirtualMachineInstance(vmi.Namespace).Delete(vmi.Name, &metav1.DeleteOptions{})).To(Succeed())
By("Waiting for VMI to disappear")
tests.WaitForVirtualMachineToDisappearWithTimeout(vmi, 120)
})
})
Context("with a Cirros disk", func() {
It("should be successfully migrate with a tablet device", func() {
vmi := tests.NewRandomVMIWithEphemeralDisk(cd.ContainerDiskFor(cd.ContainerDiskCirros))
tests.AddUserData(vmi, "cloud-init", "#!/bin/bash\necho 'hello'\n")
vmi.Spec.Domain.Devices.Inputs = []v1.Input{
{
Name: "tablet0",
Type: "tablet",
Bus: "usb",
},
}
By("Starting the VirtualMachineInstance")
vmi = runVMIAndExpectLaunch(vmi, 240)
By("Checking that the VirtualMachineInstance console has expected output")
Expect(libnet.WithIPv6(console.LoginToCirros)(vmi)).To(Succeed())
By("starting the migration")
migration := tests.NewRandomMigration(vmi.Name, vmi.Namespace)
migrationUID := tests.RunMigrationAndExpectCompletion(virtClient, migration, tests.MigrationWaitTime)
// check VMI, confirm migration state
tests.ConfirmVMIPostMigration(virtClient, vmi, migrationUID)
// delete VMI
By("Deleting the VMI")
Expect(virtClient.VirtualMachineInstance(vmi.Namespace).Delete(vmi.Name, &metav1.DeleteOptions{})).To(Succeed())
By("Waiting for VMI to disappear")
tests.WaitForVirtualMachineToDisappearWithTimeout(vmi, 240)
})
It("should migrate vmi with cdroms on various bus types", func() {
vmi := tests.NewRandomVMIWithEphemeralDisk(cd.ContainerDiskFor(cd.ContainerDiskCirros))
tests.AddEphemeralCdrom(vmi, "cdrom-0", "sata", cd.ContainerDiskFor(cd.ContainerDiskCirros))
tests.AddEphemeralCdrom(vmi, "cdrom-1", "scsi", cd.ContainerDiskFor(cd.ContainerDiskCirros))
tests.AddUserData(vmi, "cloud-init", "#!/bin/bash\necho 'hello'\n")
By("Starting the VirtualMachineInstance")
vmi = runVMIAndExpectLaunch(vmi, 240)
By("Checking that the VirtualMachineInstance console has expected output")
Expect(libnet.WithIPv6(console.LoginToCirros)(vmi)).To(Succeed())
// execute a migration, wait for finalized state
By("starting the migration")
migration := tests.NewRandomMigration(vmi.Name, vmi.Namespace)
migrationUID := tests.RunMigrationAndExpectCompletion(virtClient, migration, tests.MigrationWaitTime)
// check VMI, confirm migration state
tests.ConfirmVMIPostMigration(virtClient, vmi, migrationUID)
})
It("should migrate with a downwardMetrics disk", func() {
vmi := libvmi.NewTestToolingFedora(
libvmi.WithCloudInitNoCloudUserData(tests.GetFedoraToolsGuestAgentUserData(), false),
libvmi.WithInterface(libvmi.InterfaceDeviceWithMasqueradeBinding()),
libvmi.WithNetwork(v1.DefaultPodNetwork()),
)
tests.AddDownwardMetricsVolume(vmi, "vhostmd")
vmi = tests.RunVMIAndExpectLaunch(vmi, 180)
Expect(console.LoginToFedora(vmi)).To(Succeed())
By("starting the migration")
migration := tests.NewRandomMigration(vmi.Name, vmi.Namespace)
migrationUID := tests.RunMigrationAndExpectCompletion(virtClient, migration, tests.MigrationWaitTime)
tests.ConfirmVMIPostMigration(virtClient, vmi, migrationUID)
By("checking if the metrics are still updated after the migration")
Eventually(func() error {
_, err := getDownwardMetrics(vmi)
return err
}, 20*time.Second, 1*time.Second).ShouldNot(HaveOccurred())
metrics, err := getDownwardMetrics(vmi)
Expect(err).ToNot(HaveOccurred())
timestamp := getTimeFromMetrics(metrics)
Eventually(func() int {
metrics, err := getDownwardMetrics(vmi)
Expect(err).ToNot(HaveOccurred())
return getTimeFromMetrics(metrics)
}, 10*time.Second, 1*time.Second).ShouldNot(Equal(timestamp))
By("checking that the new nodename is reflected in the downward metrics")
vmi, err = virtClient.VirtualMachineInstance(vmi.Namespace).Get(vmi.Name, &metav1.GetOptions{})
Expect(err).ToNot(HaveOccurred())
Expect(getHostnameFromMetrics(metrics)).To(Equal(vmi.Status.NodeName))
})
It("should migrate with TSC frequency set", func() {
vmi := tests.NewRandomVMIWithEphemeralDisk(cd.ContainerDiskFor(cd.ContainerDiskCirros))
tests.AddUserData(vmi, "cloud-init", "#!/bin/bash\necho 'hello'\n")
vmi.Spec.Domain.CPU = &v1.CPU{
Features: []v1.CPUFeature{
{
Name: "invtsc",
Policy: "require",
},
},
}
// only with this strategy will the frequency be set
strategy := v1.EvictionStrategyLiveMigrate
vmi.Spec.EvictionStrategy = &strategy
vmi = tests.RunVMIAndExpectLaunch(vmi, 180)
Expect(console.LoginToCirros(vmi)).To(Succeed())
By("Checking the TSC frequency on the Domain XML")
domainSpec, err := tests.GetRunningVMIDomainSpec(vmi)
Expect(err).ToNot(HaveOccurred())
timerFrequency := ""
for _, timer := range domainSpec.Clock.Timer {
if timer.Name == "tsc" {
timerFrequency = timer.Frequency
}
}
Expect(timerFrequency).ToNot(BeEmpty())
By("starting the migration")
migration := tests.NewRandomMigration(vmi.Name, vmi.Namespace)
migrationUID := tests.RunMigrationAndExpectCompletion(virtClient, migration, tests.MigrationWaitTime)
tests.ConfirmVMIPostMigration(virtClient, vmi, migrationUID)
By("Checking the TSC frequency on the Domain XML on the new node")
domainSpec, err = tests.GetRunningVMIDomainSpec(vmi)
Expect(err).ToNot(HaveOccurred())
timerFrequency = ""
for _, timer := range domainSpec.Clock.Timer {
if timer.Name == "tsc" {
timerFrequency = timer.Frequency
}
}
Expect(timerFrequency).ToNot(BeEmpty())
})
It("[test_id:4113]should be successfully migrate with cloud-init disk with devices on the root bus", func() {
vmi := tests.NewRandomVMIWithEphemeralDisk(cd.ContainerDiskFor(cd.ContainerDiskCirros))
vmi.Annotations = map[string]string{
v1.PlacePCIDevicesOnRootComplex: "true",
}
tests.AddUserData(vmi, "cloud-init", "#!/bin/bash\necho 'hello'\n")
By("Starting the VirtualMachineInstance")
vmi = runVMIAndExpectLaunch(vmi, 240)
By("Checking that the VirtualMachineInstance console has expected output")
Expect(libnet.WithIPv6(console.LoginToCirros)(vmi)).To(Succeed())
// execute a migration, wait for finalized state
By("starting the migration")
migration := tests.NewRandomMigration(vmi.Name, vmi.Namespace)
migrationUID := tests.RunMigrationAndExpectCompletion(virtClient, migration, tests.MigrationWaitTime)
// check VMI, confirm migration state
tests.ConfirmVMIPostMigration(virtClient, vmi, migrationUID)
By("checking that we really migrated a VMI with only the root bus")
domSpec, err := tests.GetRunningVMIDomainSpec(vmi)
Expect(err).ToNot(HaveOccurred())
rootPortController := []api.Controller{}
for _, c := range domSpec.Devices.Controllers {
if c.Model == "pcie-root-port" {
rootPortController = append(rootPortController, c)
}
}
Expect(rootPortController).To(HaveLen(0), "libvirt should not add additional buses to the root one")
// delete VMI
By("Deleting the VMI")
Expect(virtClient.VirtualMachineInstance(vmi.Namespace).Delete(vmi.Name, &metav1.DeleteOptions{})).To(Succeed())
By("Waiting for VMI to disappear")
tests.WaitForVirtualMachineToDisappearWithTimeout(vmi, 240)
})
It("[test_id:1783]should be successfully migrated multiple times with cloud-init disk", func() {
vmi := tests.NewRandomVMIWithEphemeralDisk(cd.ContainerDiskFor(cd.ContainerDiskCirros))
tests.AddUserData(vmi, "cloud-init", "#!/bin/bash\necho 'hello'\n")
By("Starting the VirtualMachineInstance")
vmi = runVMIAndExpectLaunch(vmi, 240)
By("Checking that the VirtualMachineInstance console has expected output")
Expect(libnet.WithIPv6(console.LoginToCirros)(vmi)).To(Succeed())
num := 4
for i := 0; i < num; i++ {
// execute a migration, wait for finalized state
By(fmt.Sprintf("Starting the Migration for iteration %d", i))
migration := tests.NewRandomMigration(vmi.Name, vmi.Namespace)
migrationUID := tests.RunMigrationAndExpectCompletion(virtClient, migration, tests.MigrationWaitTime)
// check VMI, confirm migration state
tests.ConfirmVMIPostMigration(virtClient, vmi, migrationUID)
By("Check if Migrated VMI has updated IP and IPs fields")
Eventually(func() error {
newvmi, err := virtClient.VirtualMachineInstance(util.NamespaceTestDefault).Get(vmi.Name, &metav1.GetOptions{})
Expect(err).ToNot(HaveOccurred(), "Should successfully get new VMI")
vmiPod := tests.GetRunningPodByVirtualMachineInstance(newvmi, newvmi.Namespace)
return libnet.ValidateVMIandPodIPMatch(newvmi, vmiPod)
}, 180*time.Second, time.Second).Should(Succeed(), "Should have updated IP and IPs fields")
}
// delete VMI
By("Deleting the VMI")
Expect(virtClient.VirtualMachineInstance(vmi.Namespace).Delete(vmi.Name, &metav1.DeleteOptions{})).To(Succeed())
By("Waiting for VMI to disappear")
tests.WaitForVirtualMachineToDisappearWithTimeout(vmi, 240)
})
// We had a bug that prevent migrations and graceful shutdown when the libvirt connection
// is reset. This can occur for many reasons, one easy way to trigger it is to
// force libvirtd down, which will result in virt-launcher respawning it.
// Previously, we'd stop getting events after libvirt reconnect, which
// prevented things like migration. This test verifies we can migrate after
// resetting libvirt
It("[test_id:4746]should migrate even if libvirt has restarted at some point.", func() {
vmi := tests.NewRandomVMIWithEphemeralDisk(cd.ContainerDiskFor(cd.ContainerDiskCirros))
tests.AddUserData(vmi, "cloud-init", "#!/bin/bash\necho 'hello'\n")
By("Starting the VirtualMachineInstance")
vmi = runVMIAndExpectLaunch(vmi, 240)
By("Checking that the VirtualMachineInstance console has expected output")
Expect(libnet.WithIPv6(console.LoginToCirros)(vmi)).To(Succeed())
pods, err := virtClient.CoreV1().Pods(vmi.Namespace).List(context.Background(), metav1.ListOptions{
LabelSelector: v1.CreatedByLabel + "=" + string(vmi.GetUID()),
})
Expect(err).ToNot(HaveOccurred(), "Should list pods successfully")
Expect(pods.Items).To(HaveLen(1), "There should be only one VMI pod")
// find libvirtd pid
pid := getLibvirtdPid(&pods.Items[0])
// kill libvirtd
By(fmt.Sprintf("Killing libvirtd with pid %s", pid))
_, _, err = tests.ExecuteCommandOnPodV2(virtClient, &pods.Items[0], "compute",
[]string{
"kill",
"-9",
pid,
})
Expect(err).ToNot(HaveOccurred())
// wait for both libvirt to respawn and all connections to re-establish
time.Sleep(30 * time.Second)
// ensure new pid comes online
newPid := getLibvirtdPid(&pods.Items[0])
Expect(pid).ToNot(Equal(newPid), fmt.Sprintf("expected libvirtd to be cycled. original pid %s new pid %s", pid, newPid))
// execute a migration, wait for finalized state
By(fmt.Sprintf("Starting the Migration"))
migration := tests.NewRandomMigration(vmi.Name, vmi.Namespace)
migrationUID := tests.RunMigrationAndExpectCompletion(virtClient, migration, tests.MigrationWaitTime)
// check VMI, confirm migration state
tests.ConfirmVMIPostMigration(virtClient, vmi, migrationUID)
// delete VMI
By("Deleting the VMI")
Expect(virtClient.VirtualMachineInstance(vmi.Namespace).Delete(vmi.Name, &metav1.DeleteOptions{})).To(Succeed())
By("Waiting for VMI to disappear")
tests.WaitForVirtualMachineToDisappearWithTimeout(vmi, 240)
})
It("should migrate to a persistent (non-transient) libvirt domain.", func() {
vmi := tests.NewRandomVMIWithEphemeralDisk(cd.ContainerDiskFor(cd.ContainerDiskCirros))
tests.AddUserData(vmi, "cloud-init", "#!/bin/bash\necho 'hello'\n")
By("Starting the VirtualMachineInstance")
vmi = runVMIAndExpectLaunch(vmi, 240)
By("Checking that the VirtualMachineInstance console has expected output")
Expect(libnet.WithIPv6(console.LoginToCirros)(vmi)).To(Succeed())
// execute a migration, wait for finalized state
By(fmt.Sprintf("Starting the Migration"))
migration := tests.NewRandomMigration(vmi.Name, vmi.Namespace)
migrationUID := tests.RunMigrationAndExpectCompletion(virtClient, migration, tests.MigrationWaitTime)
// check VMI, confirm migration state
tests.ConfirmVMIPostMigration(virtClient, vmi, migrationUID)
// ensure the libvirt domain is persistent
persistent, err := tests.LibvirtDomainIsPersistent(virtClient, vmi)
Expect(err).ToNot(HaveOccurred(), "Should list libvirt domains successfully")
Expect(persistent).To(BeTrue(), "The VMI was not found in the list of libvirt persistent domains")
// delete VMI
By("Deleting the VMI")
Expect(virtClient.VirtualMachineInstance(vmi.Namespace).Delete(vmi.Name, &metav1.DeleteOptions{})).To(Succeed())
By("Waiting for VMI to disappear")
tests.WaitForVirtualMachineToDisappearWithTimeout(vmi, 240)
})
It("should be able to successfully migrate with a paused vmi", func() {
vmi := tests.NewRandomVMIWithEphemeralDisk(cd.ContainerDiskFor(cd.ContainerDiskCirros))
tests.AddUserData(vmi, "cloud-init", "#!/bin/bash\necho 'hello'\n")
By("Starting the VirtualMachineInstance")
vmi = runVMIAndExpectLaunch(vmi, 240)
By("Checking that the VirtualMachineInstance console has expected output")
Expect(libnet.WithIPv6(console.LoginToCirros)(vmi)).To(Succeed())
By("Pausing the VirtualMachineInstance")
virtClient.VirtualMachineInstance(vmi.Namespace).Pause(vmi.Name)
tests.WaitForVMICondition(virtClient, vmi, v1.VirtualMachineInstancePaused, 30)
By("verifying that the vmi is still paused before migration")
isPausedb, err := tests.LibvirtDomainIsPaused(virtClient, vmi)
Expect(err).ToNot(HaveOccurred(), "Should get domain state successfully")
Expect(isPausedb).To(BeTrue(), "The VMI should be paused before migration, but it is not.")
By("starting the migration")
migration := tests.NewRandomMigration(vmi.Name, vmi.Namespace)
migrationUID := tests.RunMigrationAndExpectCompletion(virtClient, migration, tests.MigrationWaitTime)
// check VMI, confirm migration state
tests.ConfirmVMIPostMigration(virtClient, vmi, migrationUID)
By("verifying that the vmi is still paused after migration")
isPaused, err := tests.LibvirtDomainIsPaused(virtClient, vmi)
Expect(err).ToNot(HaveOccurred(), "Should get domain state successfully")
Expect(isPaused).To(BeTrue(), "The VMI should be paused after migration, but it is not.")
By("verify that VMI can be unpaused after migration")
command := tests.NewRepeatableVirtctlCommand("unpause", "vmi", "--namespace", util.NamespaceTestDefault, vmi.Name)
Expect(command()).To(Succeed(), "should successfully unpause tthe vmi")
tests.WaitForVMIConditionRemovedOrFalse(virtClient, vmi, v1.VirtualMachineInstancePaused, 30)
By("verifying that the vmi is running")
isPaused, err = tests.LibvirtDomainIsPaused(virtClient, vmi)
Expect(err).ToNot(HaveOccurred(), "Should get domain state successfully")
Expect(isPaused).To(BeFalse(), "The VMI should be running, but it is not.")
})
})
Context("with auto converge enabled", func() {
BeforeEach(func() {
tests.BeforeTestCleanup()
// set autoconverge flag
config := defaultKVConfig()
allowAutoConverage := true
config.MigrationConfiguration.AllowAutoConverge = &allowAutoConverage
tests.UpdateKubeVirtConfigValueAndWait(config)
})
It("[test_id:3237]should complete a migration", func() {
vmi := tests.NewRandomFedoraVMIWithGuestAgent()
vmi.Spec.Domain.Resources.Requests[k8sv1.ResourceMemory] = resource.MustParse(fedoraVMSize)
By("Starting the VirtualMachineInstance")
vmi = runVMIAndExpectLaunch(vmi, 240)
// Need to wait for cloud init to finnish and start the agent inside the vmi.
tests.WaitAgentConnected(virtClient, vmi)
By("Checking that the VirtualMachineInstance console has expected output")
Expect(console.LoginToFedora(vmi)).To(Succeed())
runStressTest(vmi, stressDefaultVMSize, stressDefaultTimeout)
// execute a migration, wait for finalized state
By("Starting the Migration")
migration := tests.NewRandomMigration(vmi.Name, vmi.Namespace)
migrationUID := tests.RunMigrationAndExpectCompletion(virtClient, migration, tests.MigrationWaitTime)
// check VMI, confirm migration state
tests.ConfirmVMIPostMigration(virtClient, vmi, migrationUID)
// delete VMI
By("Deleting the VMI")
Expect(virtClient.VirtualMachineInstance(vmi.Namespace).Delete(vmi.Name, &metav1.DeleteOptions{})).To(Succeed())
By("Waiting for VMI to disappear")
tests.WaitForVirtualMachineToDisappearWithTimeout(vmi, 240)
})
})
Context("with setting guest time", func() {
It("[test_id:4114]should set an updated time after a migration", func() {
vmi := tests.NewRandomFedoraVMIWithGuestAgent()
vmi.Spec.Domain.Resources.Requests[k8sv1.ResourceMemory] = resource.MustParse(fedoraVMSize)
vmi.Spec.Domain.Devices.Rng = &v1.Rng{}
By("Starting the VirtualMachineInstance")
vmi = runVMIAndExpectLaunch(vmi, 240)
By("Checking that the VirtualMachineInstance console has expected output")
Expect(console.LoginToFedora(vmi)).To(Succeed())
// Need to wait for cloud init to finnish and start the agent inside the vmi.
tests.WaitAgentConnected(virtClient, vmi)
By("Set wrong time on the guest")
Expect(console.SafeExpectBatch(vmi, []expect.Batcher{
&expect.BSnd{S: "date +%T -s 23:26:00\n"},
&expect.BExp{R: console.PromptExpression},
}, 15)).To(Succeed(), "should set guest time")
// execute a migration, wait for finalized state
By("Starting the Migration")
migration := tests.NewRandomMigration(vmi.Name, vmi.Namespace)
migrationUID := tests.RunMigrationAndExpectCompletion(virtClient, migration, tests.MigrationWaitTime)
// check VMI, confirm migration state
tests.ConfirmVMIPostMigration(virtClient, vmi, migrationUID)
tests.WaitAgentConnected(virtClient, vmi)
By("Checking that the migrated VirtualMachineInstance has an updated time")
if !console.OnPrivilegedPrompt(vmi, 60) {
Expect(console.LoginToFedora(vmi)).To(Succeed())
}
By("Waiting for the agent to set the right time")
Eventually(func() error {
// get current time on the node
output := tests.RunCommandOnVmiPod(vmi, []string{"date", "+%H:%M"})
expectedTime := strings.TrimSpace(output)
log.DefaultLogger().Infof("expoected time: %v", expectedTime)
By("Checking that the guest has an updated time")
return console.SafeExpectBatch(vmi, []expect.Batcher{
&expect.BSnd{S: "date +%H:%M\n"},
&expect.BExp{R: expectedTime},
}, 30)
}, 240*time.Second, 1*time.Second).Should(Succeed())
})
})
Context("with a shared ISCSI Filesystem PVC (using ISCSI IPv4 address)", func() {
BeforeEach(func() {
tests.BeforeTestCleanup()
if !tests.HasCDI() {
Skip("Skip DataVolume tests when CDI is not present")
}
// set unsafe migration flag
cfg := defaultKVConfig()
unsafeMigrationOverride := true
cfg.MigrationConfiguration.UnsafeMigrationOverride = &unsafeMigrationOverride
tests.UpdateKubeVirtConfigValueAndWait(cfg)
})
It("[test_id:3238]should migrate a vmi with UNSAFE_MIGRATION flag set", func() {
// Normally, live migration with a shared volume that contains
// a non-clustered filesystem will be prevented for disk safety reasons.
// This test sets a UNSAFE_MIGRATION flag and a migration with an ext4 filesystem
// should succeed.
pvName := "test-iscsi-dv" + rand.String(48)
// Start a ISCSI POD and service
By("Starting an iSCSI POD")
iscsiTargetPod := tests.CreateISCSITargetPOD(cd.ContainerDiskEmpty)
iscsiTargetIPAddress := libnet.GetPodIpByFamily(iscsiTargetPod, k8sv1.IPv4Protocol)
Expect(iscsiTargetIPAddress).NotTo(BeEmpty())
_, err = virtClient.CoreV1().PersistentVolumes().Create(context.Background(), tests.NewISCSIPV(pvName, "2Gi", iscsiTargetIPAddress, k8sv1.ReadWriteMany, k8sv1.PersistentVolumeFilesystem), metav1.CreateOptions{})
Expect(err).ToNot(HaveOccurred())
dataVolume := tests.NewRandomDataVolumeWithHttpImport(tests.GetUrl(tests.AlpineHttpUrl), util.NamespaceTestDefault, k8sv1.ReadWriteMany)
volMode := k8sv1.PersistentVolumeFilesystem
dataVolume.Spec.PVC.VolumeMode = &volMode
vmi := tests.NewRandomVMIWithDataVolume(dataVolume.Name)
_, err := virtClient.CdiClient().CdiV1beta1().DataVolumes(dataVolume.Namespace).Create(context.Background(), dataVolume, metav1.CreateOptions{})
Expect(err).ToNot(HaveOccurred())
tests.WaitForDataVolumeReadyToStartVMI(vmi, 340)
vmi = runVMIAndExpectLaunch(vmi, 240)
// Verify console on last iteration to verify the VirtualMachineInstance is still booting properly
// after being restarted multiple times
By("Checking that the VirtualMachineInstance console has expected output")
Expect(console.LoginToAlpine(vmi)).To(Succeed())
// execute a migration, wait for finalized state
By("Starting the Migration")
migration := tests.NewRandomMigration(vmi.Name, vmi.Namespace)
migrationUID := tests.RunMigrationAndExpectCompletion(virtClient, migration, tests.MigrationWaitTime)
// check VMI, confirm migration state
tests.ConfirmVMIPostMigration(virtClient, vmi, migrationUID)
// delete VMI
By("Deleting the VMI")
Expect(virtClient.VirtualMachineInstance(vmi.Namespace).Delete(vmi.Name, &metav1.DeleteOptions{})).To(Succeed())
By("Waiting for VMI to disappear")
tests.WaitForVirtualMachineToDisappearWithTimeout(vmi, 120)
Expect(virtClient.CdiClient().CdiV1beta1().DataVolumes(dataVolume.Namespace).Delete(context.Background(), dataVolume.Name, metav1.DeleteOptions{})).To(Succeed(), metav1.DeleteOptions{})
})
})
Context("with an Alpine DataVolume", func() {
BeforeEach(func() {
tests.BeforeTestCleanup()
if !tests.HasCDI() {
Skip("Skip DataVolume tests when CDI is not present")
}
})
It("[test_id:3239]should reject a migration of a vmi with a non-shared data volume", func() {
dataVolume := tests.NewRandomDataVolumeWithHttpImport(tests.GetUrl(tests.AlpineHttpUrl), util.NamespaceTestDefault, k8sv1.ReadWriteOnce)
vmi := tests.NewRandomVMIWithDataVolume(dataVolume.Name)
_, err := virtClient.CdiClient().CdiV1beta1().DataVolumes(dataVolume.Namespace).Create(context.Background(), dataVolume, metav1.CreateOptions{})
Expect(err).ToNot(HaveOccurred())
tests.WaitForDataVolumeReadyToStartVMI(vmi, 240)
vmi = runVMIAndExpectLaunch(vmi, 240)
// Verify console on last iteration to verify the VirtualMachineInstance is still booting properly
// after being restarted multiple times
By("Checking that the VirtualMachineInstance console has expected output")
Expect(console.LoginToAlpine(vmi)).To(Succeed())
gotExpectedCondition := false
for _, c := range vmi.Status.Conditions {
if c.Type == v1.VirtualMachineInstanceIsMigratable {
Expect(c.Status).To(Equal(k8sv1.ConditionFalse))
gotExpectedCondition = true
}
}
Expect(gotExpectedCondition).Should(BeTrue())
// execute a migration, wait for finalized state
migration := tests.NewRandomMigration(vmi.Name, vmi.Namespace)
By("Starting a Migration")
migration, err = virtClient.VirtualMachineInstanceMigration(migration.Namespace).Create(migration)
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("DisksNotLiveMigratable"))
// delete VMI
By("Deleting the VMI")
Expect(virtClient.VirtualMachineInstance(vmi.Namespace).Delete(vmi.Name, &metav1.DeleteOptions{})).To(Succeed())
By("Waiting for VMI to disappear")
tests.WaitForVirtualMachineToDisappearWithTimeout(vmi, 120)
Expect(virtClient.CdiClient().CdiV1beta1().DataVolumes(dataVolume.Namespace).Delete(context.Background(), dataVolume.Name, metav1.DeleteOptions{})).To(Succeed(), metav1.DeleteOptions{})
})
It("[test_id:1479] should migrate a vmi with a shared OCS disk", func() {
vmi, dv := tests.NewRandomVirtualMachineInstanceWithOCSDisk(tests.GetUrl(tests.AlpineHttpUrl), util.NamespaceTestDefault, k8sv1.ReadWriteMany, k8sv1.PersistentVolumeBlock)
defer deleteDataVolume(dv)
By("Starting the VirtualMachineInstance")
vmi = runVMIAndExpectLaunch(vmi, 300)
By("Checking that the VirtualMachineInstance console has expected output")
Expect(console.LoginToAlpine(vmi)).To(Succeed())
By("Starting a Migration")
migration := tests.NewRandomMigration(vmi.Name, vmi.Namespace)
migrationUID := tests.RunMigrationAndExpectCompletion(virtClient, migration, tests.MigrationWaitTime)
// check VMI, confirm migration state
tests.ConfirmVMIPostMigration(virtClient, vmi, migrationUID)
// delete VMI
By("Deleting the VMI")
Expect(virtClient.VirtualMachineInstance(vmi.Namespace).Delete(vmi.Name, &metav1.DeleteOptions{})).To(Succeed())
By("Waiting for VMI to disappear")
tests.WaitForVirtualMachineToDisappearWithTimeout(vmi, 120)
})
It("should reject additional migrations on the same VMI if the first one is not finished", func() {
vmi := tests.NewRandomFedoraVMIWithGuestAgent()
vmi.Spec.Domain.Resources.Requests[k8sv1.ResourceMemory] = resource.MustParse(fedoraVMSize)
By("Starting the VirtualMachineInstance")
vmi = runVMIAndExpectLaunch(vmi, 240)