Golang volumehelper.GetUniquePodName函数代码示例

// Populates data struct with a volume
// Calls AddPodToVolume() twice to add the same pod to the volume
// Verifies volume/pod combo exist using PodExistsInVolume() and the second call
// did not fail.
func Test_AddPodToVolume_Positive_ExistingVolumeExistingNode(t *testing.T) {
	// Arrange
	volumePluginMgr, plugin := volumetesting.GetTestVolumePluginMgr(t)
	asw := NewActualStateOfWorld("mynode" /* nodeName */, volumePluginMgr)
	devicePath := "fake/device/path"

	pod := &api.Pod{
		ObjectMeta: api.ObjectMeta{
			Name: "pod1",
			UID:  "pod1uid",
		},
		Spec: api.PodSpec{
			Volumes: []api.Volume{
				{
					Name: "volume-name",
					VolumeSource: api.VolumeSource{
						GCEPersistentDisk: &api.GCEPersistentDiskVolumeSource{
							PDName: "fake-device1",
						},
					},
				},
			},
		},
	}

	volumeSpec := &volume.Spec{Volume: &pod.Spec.Volumes[0]}
	volumeName, err := volumehelper.GetUniqueVolumeNameFromSpec(
		plugin, volumeSpec)

	generatedVolumeName, err := asw.AddVolume(volumeSpec, devicePath)
	if err != nil {
		t.Fatalf("AddVolume failed. Expected: <no error> Actual: <%v>", err)
	}
	podName := volumehelper.GetUniquePodName(pod)

	mounter, err := plugin.NewMounter(volumeSpec, pod, volume.VolumeOptions{})
	if err != nil {
		t.Fatalf("NewUnmounter failed. Expected: <no error> Actual: <%v>", err)
	}

	err = asw.AddPodToVolume(
		podName, pod.UID, volumeName, mounter, volumeSpec.Name(), "" /* volumeGidValue */)
	if err != nil {
		t.Fatalf("AddPodToVolume failed. Expected: <no error> Actual: <%v>", err)
	}

	// Act
	err = asw.AddPodToVolume(
		podName, pod.UID, volumeName, mounter, volumeSpec.Name(), "" /* volumeGidValue */)

	// Assert
	if err != nil {
		t.Fatalf("AddPodToVolume failed. Expected: <no error> Actual: <%v>", err)
	}

	verifyVolumeExistsAsw(t, generatedVolumeName, true /* shouldExist */, asw)
	verifyVolumeDoesntExistInUnmountedVolumes(t, generatedVolumeName, asw)
	verifyVolumeDoesntExistInGloballyMountedVolumes(t, generatedVolumeName, asw)
	verifyPodExistsInVolumeAsw(t, podName, generatedVolumeName, "fake/device/path" /* expectedDevicePath */, asw)
}

// Iterate through all pods in desired state of world, and remove if they no
// longer exist in the informer
func (dswp *desiredStateOfWorldPopulator) findAndRemoveDeletedPods() {
	for dswPodUID, dswPodToAdd := range dswp.desiredStateOfWorld.GetPodToAdd() {
		dswPodKey, err := kcache.MetaNamespaceKeyFunc(dswPodToAdd.Pod)
		if err != nil {
			glog.Errorf("MetaNamespaceKeyFunc failed for pod %q (UID %q) with: %v", dswPodKey, dswPodUID, err)
			continue
		}
		// retrieve the pod object from pod informer with the namespace key
		informerPodObj, exists, err := dswp.podInformer.GetStore().GetByKey(dswPodKey)
		if err != nil || informerPodObj == nil {
			glog.Errorf("podInformer GetByKey failed for pod %q (UID %q) with %v", dswPodKey, dswPodUID, err)
			continue
		}
		if exists {
			informerPod, ok := informerPodObj.(*api.Pod)
			if !ok {
				glog.Errorf("Failed to cast obj %#v to pod object for pod %q (UID %q)", informerPod, dswPodKey, dswPodUID)
				continue
			}
			informerPodUID := volumehelper.GetUniquePodName(informerPod)
			// Check whether the unique idenfier of the pod from dsw matches the one retrived from pod informer
			if informerPodUID == dswPodUID {
				glog.V(10).Infof(
					"Verified pod %q (UID %q) from dsw exists in pod informer.", dswPodKey, dswPodUID)
				continue

			}
		}
		// the pod from dsw does not exist in pod informer, or it does not match the unique idenfier retrieved
		// from the informer, delete it from dsw
		glog.V(1).Infof(
			"Removing pod %q (UID %q) from dsw because it does not exist in pod informer.", dswPodKey, dswPodUID)
		dswp.desiredStateOfWorld.DeletePod(dswPodUID, dswPodToAdd.VolumeName, dswPodToAdd.NodeName)
	}
}

// Populates desiredStateOfWorld cache with one volume/pod.
// Enables controllerAttachDetachEnabled.
// Calls Run()
// Verifies there is one mount call and no unmount calls.
// Verifies there are no attach/detach calls.
func Test_Run_Positive_VolumeMountControllerAttachEnabled(t *testing.T) {
	// Arrange
	volumePluginMgr, fakePlugin := volumetesting.GetTestVolumePluginMgr(t)
	dsw := cache.NewDesiredStateOfWorld(volumePluginMgr)
	asw := cache.NewActualStateOfWorld(nodeName, volumePluginMgr)
	kubeClient := createTestClient()
	oex := operationexecutor.NewOperationExecutor(kubeClient, volumePluginMgr)
	reconciler := NewReconciler(
		kubeClient,
		true, /* controllerAttachDetachEnabled */
		reconcilerLoopSleepDuration,
		waitForAttachTimeout,
		nodeName,
		dsw,
		asw,
		oex)
	pod := &api.Pod{
		ObjectMeta: api.ObjectMeta{
			Name: "pod1",
			UID:  "pod1uid",
		},
		Spec: api.PodSpec{
			Volumes: []api.Volume{
				{
					Name: "volume-name",
					VolumeSource: api.VolumeSource{
						GCEPersistentDisk: &api.GCEPersistentDiskVolumeSource{
							PDName: "fake-device1",
						},
					},
				},
			},
		},
	}

	volumeSpec := &volume.Spec{Volume: &pod.Spec.Volumes[0]}
	podName := volumehelper.GetUniquePodName(pod)
	_, err := dsw.AddPodToVolume(
		podName, pod, volumeSpec, volumeSpec.Name(), "" /* volumeGidValue */)

	// Assert
	if err != nil {
		t.Fatalf("AddPodToVolume failed. Expected: <no error> Actual: <%v>", err)
	}

	// Act
	go reconciler.Run(wait.NeverStop)
	waitForAttach(t, fakePlugin, asw)

	// Assert
	assert.NoError(t, volumetesting.VerifyZeroAttachCalls(fakePlugin))
	assert.NoError(t, volumetesting.VerifyWaitForAttachCallCount(
		1 /* expectedWaitForAttachCallCount */, fakePlugin))
	assert.NoError(t, volumetesting.VerifyMountDeviceCallCount(
		1 /* expectedMountDeviceCallCount */, fakePlugin))
	assert.NoError(t, volumetesting.VerifySetUpCallCount(
		1 /* expectedSetUpCallCount */, fakePlugin))
	assert.NoError(t, volumetesting.VerifyZeroTearDownCallCount(fakePlugin))
	assert.NoError(t, volumetesting.VerifyZeroDetachCallCount(fakePlugin))
}

// Calls AddPodToVolume() to add pod to empty data stuct
// Verifies call fails with "volume does not exist" error.
func Test_AddPodToVolume_Negative_VolumeDoesntExist(t *testing.T) {
	// Arrange
	volumePluginMgr, _ := volumetesting.GetTestVolumePluginMgr(t)
	asw := NewActualStateOfWorld("mynode" /* nodeName */, volumePluginMgr)

	pod := &api.Pod{
		ObjectMeta: api.ObjectMeta{
			Name: "pod1",
			UID:  "pod1uid",
		},
		Spec: api.PodSpec{
			Volumes: []api.Volume{
				{
					Name: "volume-name",
					VolumeSource: api.VolumeSource{
						GCEPersistentDisk: &api.GCEPersistentDiskVolumeSource{
							PDName: "fake-device1",
						},
					},
				},
			},
		},
	}

	volumeSpec := &volume.Spec{Volume: &pod.Spec.Volumes[0]}
	plugin, err := volumePluginMgr.FindPluginBySpec(volumeSpec)
	if err != nil {
		t.Fatalf(
			"volumePluginMgr.FindPluginBySpec failed to find volume plugin for %#v with: %v",
			volumeSpec,
			err)
	}
	volumeName, err := volumehelper.GetUniqueVolumeNameFromSpec(
		plugin, volumeSpec)

	podName := volumehelper.GetUniquePodName(pod)

	mounter, err := plugin.NewMounter(volumeSpec, pod, volume.VolumeOptions{})
	if err != nil {
		t.Fatalf("NewUnmounter failed. Expected: <no error> Actual: <%v>", err)
	}

	// Act
	err = asw.AddPodToVolume(
		podName, pod.UID, volumeName, mounter, volumeSpec.Name(), "" /* volumeGidValue */)

	// Assert
	if err == nil {
		t.Fatalf("AddPodToVolume did not fail. Expected: <\"no volume with the name ... exists in the list of attached volumes\"> Actual: <no error>")
	}

	verifyVolumeDoesntExistInAttachedVolumes(t, volumeName, asw)
	verifyPodDoesntExistInVolumeAsw(
		t,
		podName,
		volumeName,
		false, /* expectVolumeToExist */
		asw)
}

func TestListVolumesForPod(t *testing.T) {
	testKubelet := newTestKubelet(t, false /* controllerAttachDetachEnabled */)
	kubelet := testKubelet.kubelet

	pod := podWithUidNameNsSpec("12345678", "foo", "test", v1.PodSpec{
		Volumes: []v1.Volume{
			{
				Name: "vol1",
				VolumeSource: v1.VolumeSource{
					GCEPersistentDisk: &v1.GCEPersistentDiskVolumeSource{
						PDName: "fake-device1",
					},
				},
			},
			{
				Name: "vol2",
				VolumeSource: v1.VolumeSource{
					GCEPersistentDisk: &v1.GCEPersistentDiskVolumeSource{
						PDName: "fake-device2",
					},
				},
			},
		},
	})

	stopCh := runVolumeManager(kubelet)
	defer func() {
		close(stopCh)
	}()

	kubelet.podManager.SetPods([]*v1.Pod{pod})
	err := kubelet.volumeManager.WaitForAttachAndMount(pod)
	assert.NoError(t, err)

	podName := volumehelper.GetUniquePodName(pod)

	volumesToReturn, volumeExsit := kubelet.ListVolumesForPod(types.UID(podName))
	if !volumeExsit {
		t.Errorf("Expected to find volumes for pod %q, but ListVolumesForPod find no volume", podName)
	}

	outerVolumeSpecName1 := "vol1"
	if volumesToReturn[outerVolumeSpecName1] == nil {
		t.Errorf("Value of map volumesToReturn is not expected to be nil, which key is : %s", outerVolumeSpecName1)
	}

	outerVolumeSpecName2 := "vol2"
	if volumesToReturn[outerVolumeSpecName2] == nil {
		t.Errorf("Value of map volumesToReturn is not expected to be nil, which key is : %s", outerVolumeSpecName2)
	}

}

// GenerateRunContainerOptions generates the RunContainerOptions, which can be used by
// the container runtime to set parameters for launching a container.
func (kl *Kubelet) GenerateRunContainerOptions(pod *api.Pod, container *api.Container, podIP string) (*kubecontainer.RunContainerOptions, error) {
	var err error
	opts := &kubecontainer.RunContainerOptions{CgroupParent: kl.cgroupRoot}
	hostname, hostDomainName, err := kl.GeneratePodHostNameAndDomain(pod)
	if err != nil {
		return nil, err
	}
	opts.Hostname = hostname
	podName := volumehelper.GetUniquePodName(pod)
	volumes := kl.volumeManager.GetMountedVolumesForPod(podName)

	opts.PortMappings = makePortMappings(container)
	// Docker does not relabel volumes if the container is running
	// in the host pid or ipc namespaces so the kubelet must
	// relabel the volumes
	if pod.Spec.SecurityContext != nil && (pod.Spec.SecurityContext.HostIPC || pod.Spec.SecurityContext.HostPID) {
		err = kl.relabelVolumes(pod, volumes)
		if err != nil {
			return nil, err
		}
	}

	opts.Mounts, err = makeMounts(pod, kl.getPodDir(pod.UID), container, hostname, hostDomainName, podIP, volumes)
	if err != nil {
		return nil, err
	}
	opts.Envs, err = kl.makeEnvironmentVariables(pod, container, podIP)
	if err != nil {
		return nil, err
	}

	if len(container.TerminationMessagePath) != 0 {
		p := kl.getPodContainerDir(pod.UID, container.Name)
		if err := os.MkdirAll(p, 0750); err != nil {
			glog.Errorf("Error on creating %q: %v", p, err)
		} else {
			opts.PodContainerDir = p
		}
	}

	opts.DNS, opts.DNSSearch, err = kl.GetClusterDNS(pod)
	if err != nil {
		return nil, err
	}

	return opts, nil
}

// processPodVolumes processes the volumes in the given pod and adds them to the
// desired state of the world.
func (dswp *desiredStateOfWorldPopulator) processPodVolumes(pod *api.Pod) {
	if pod == nil {
		return
	}

	uniquePodName := volumehelper.GetUniquePodName(pod)
	if dswp.podPreviouslyProcessed(uniquePodName) {
		return
	}

	// Process volume spec for each volume defined in pod
	for _, podVolume := range pod.Spec.Volumes {
		volumeSpec, volumeGidValue, err :=
			dswp.createVolumeSpec(podVolume, pod.Namespace)
		if err != nil {
			glog.Errorf(
				"Error processing volume %q for pod %q/%q: %v",
				podVolume.Name,
				pod.Namespace,
				pod.Name,
				err)
			continue
		}

		// Add volume to desired state of world
		_, err = dswp.desiredStateOfWorld.AddPodToVolume(
			uniquePodName, pod, volumeSpec, podVolume.Name, volumeGidValue)
		if err != nil {
			glog.Errorf(
				"Failed to add volume %q (specName: %q) for pod %q to desiredStateOfWorld. err=%v",
				podVolume.Name,
				volumeSpec.Name(),
				uniquePodName,
				err)
		}

		glog.V(10).Infof(
			"Added volume %q (volSpec=%q) for pod %q to desired state.",
			podVolume.Name,
			volumeSpec.Name(),
			uniquePodName)
	}

	dswp.markPodProcessed(uniquePodName)
}

func TestVolumeAttachAndMountControllerDisabled(t *testing.T) {
	testKubelet := newTestKubelet(t, false /* controllerAttachDetachEnabled */)
	kubelet := testKubelet.kubelet

	pod := podWithUidNameNsSpec("12345678", "foo", "test", api.PodSpec{
		Volumes: []api.Volume{
			{
				Name: "vol1",
				VolumeSource: api.VolumeSource{
					GCEPersistentDisk: &api.GCEPersistentDiskVolumeSource{
						PDName: "fake-device",
					},
				},
			},
		},
	})

	stopCh := runVolumeManager(kubelet)
	defer func() {
		close(stopCh)
	}()

	kubelet.podManager.SetPods([]*api.Pod{pod})
	err := kubelet.volumeManager.WaitForAttachAndMount(pod)
	assert.NoError(t, err)

	podVolumes := kubelet.volumeManager.GetMountedVolumesForPod(
		volumehelper.GetUniquePodName(pod))

	expectedPodVolumes := []string{"vol1"}
	assert.Len(t, podVolumes, len(expectedPodVolumes), "Volumes for pod %+v", pod)
	for _, name := range expectedPodVolumes {
		assert.Contains(t, podVolumes, name, "Volumes for pod %+v", pod)
	}
	assert.True(t, testKubelet.volumePlugin.GetNewAttacherCallCount() >= 1, "Expected plugin NewAttacher to be called at least once")
	assert.NoError(t, volumetest.VerifyWaitForAttachCallCount(
		1 /* expectedWaitForAttachCallCount */, testKubelet.volumePlugin))
	assert.NoError(t, volumetest.VerifyAttachCallCount(
		1 /* expectedAttachCallCount */, testKubelet.volumePlugin))
	assert.NoError(t, volumetest.VerifyMountDeviceCallCount(
		1 /* expectedMountDeviceCallCount */, testKubelet.volumePlugin))
	assert.NoError(t, volumetest.VerifySetUpCallCount(
		1 /* expectedSetUpCallCount */, testKubelet.volumePlugin))
}

// Populates data struct with a new volume/pod
// Calls DeletePodFromVolume() to removes the pod
// Verifies newly added pod/volume are deleted
func Test_DeletePodFromVolume_Positive_PodExistsVolumeExists(t *testing.T) {
	// Arrange
	volumePluginMgr, _ := volumetesting.GetTestVolumePluginMgr(t)
	dsw := NewDesiredStateOfWorld(volumePluginMgr)
	pod := &v1.Pod{
		ObjectMeta: metav1.ObjectMeta{
			Name: "pod3",
			UID:  "pod3uid",
		},
		Spec: v1.PodSpec{
			Volumes: []v1.Volume{
				{
					Name: "volume-name",
					VolumeSource: v1.VolumeSource{
						GCEPersistentDisk: &v1.GCEPersistentDiskVolumeSource{
							PDName: "fake-device1",
						},
					},
				},
			},
		},
	}

	volumeSpec := &volume.Spec{Volume: &pod.Spec.Volumes[0]}
	podName := volumehelper.GetUniquePodName(pod)
	generatedVolumeName, err := dsw.AddPodToVolume(
		podName, pod, volumeSpec, volumeSpec.Name(), "" /* volumeGidValue */)
	if err != nil {
		t.Fatalf("AddPodToVolume failed. Expected: <no error> Actual: <%v>", err)
	}
	verifyVolumeExistsDsw(t, generatedVolumeName, dsw)
	verifyVolumeExistsInVolumesToMount(
		t, generatedVolumeName, false /* expectReportedInUse */, dsw)
	verifyPodExistsInVolumeDsw(t, podName, generatedVolumeName, dsw)

	// Act
	dsw.DeletePodFromVolume(podName, generatedVolumeName)

	// Assert
	verifyVolumeDoesntExist(t, generatedVolumeName, dsw)
	verifyVolumeDoesntExistInVolumesToMount(t, generatedVolumeName, dsw)
	verifyPodDoesntExistInVolumeDsw(t, podName, generatedVolumeName, dsw)
}

func (oe *operationExecutor) MountVolume(
	waitForAttachTimeout time.Duration,
	volumeToMount VolumeToMount,
	actualStateOfWorld ActualStateOfWorldMounterUpdater) error {
	mountFunc, err := oe.generateMountVolumeFunc(
		waitForAttachTimeout, volumeToMount, actualStateOfWorld)
	if err != nil {
		return err
	}

	podName := volumetypes.UniquePodName("")
	if !volumeToMount.PluginIsAttachable {
		// Non-attachable volume plugins can execute mount for multiple pods
		// referencing the same volume in parallel
		podName = volumehelper.GetUniquePodName(volumeToMount.Pod)
	}

	return oe.pendingOperations.Run(
		volumeToMount.VolumeName, podName, mountFunc)
}

func (vm *volumeManager) GetExtraSupplementalGroupsForPod(pod *v1.Pod) []int64 {
	podName := volumehelper.GetUniquePodName(pod)
	supplementalGroups := sets.NewString()

	for _, mountedVolume := range vm.actualStateOfWorld.GetMountedVolumesForPod(podName) {
		if mountedVolume.VolumeGidValue != "" {
			supplementalGroups.Insert(mountedVolume.VolumeGidValue)
		}
	}

	result := make([]int64, 0, supplementalGroups.Len())
	for _, group := range supplementalGroups.List() {
		iGroup, extra := getExtraSupplementalGid(group, pod)
		if !extra {
			continue
		}

		result = append(result, int64(iGroup))
	}

	return result
}

func (vm *volumeManager) WaitForAttachAndMount(pod *v1.Pod) error {
	expectedVolumes := getExpectedVolumes(pod)
	if len(expectedVolumes) == 0 {
		// No volumes to verify
		return nil
	}

	glog.V(3).Infof("Waiting for volumes to attach and mount for pod %q", format.Pod(pod))
	uniquePodName := volumehelper.GetUniquePodName(pod)

	// Some pods expect to have Setup called over and over again to update.
	// Remount plugins for which this is true. (Atomically updating volumes,
	// like Downward API, depend on this to update the contents of the volume).
	vm.desiredStateOfWorldPopulator.ReprocessPod(uniquePodName)
	vm.actualStateOfWorld.MarkRemountRequired(uniquePodName)

	err := wait.Poll(
		podAttachAndMountRetryInterval,
		podAttachAndMountTimeout,
		vm.verifyVolumesMountedFunc(uniquePodName, expectedVolumes))

	if err != nil {
		// Timeout expired
		unmountedVolumes :=
			vm.getUnmountedVolumes(uniquePodName, expectedVolumes)
		if len(unmountedVolumes) == 0 {
			return nil
		}

		return fmt.Errorf(
			"timeout expired waiting for volumes to attach/mount for pod %q/%q. list of unattached/unmounted volumes=%v",
			pod.Namespace,
			pod.Name,
			unmountedVolumes)
	}

	glog.V(3).Infof("All volumes are attached and mounted for pod %q", format.Pod(pod))
	return nil
}

// Calls AddPodToVolume() twice to add the same pod to the same volume
// Verifies newly added pod/volume exists via
// PodExistsInVolume() VolumeExists() and GetVolumesToMount() and no errors.
func Test_AddPodToVolume_Positive_ExistingPodExistingVolume(t *testing.T) {
	// Arrange
	volumePluginMgr, _ := volumetesting.GetTestVolumePluginMgr(t)
	dsw := NewDesiredStateOfWorld(volumePluginMgr)
	pod := &api.Pod{
		ObjectMeta: api.ObjectMeta{
			Name: "pod3",
			UID:  "pod3uid",
		},
		Spec: api.PodSpec{
			Volumes: []api.Volume{
				{
					Name: "volume-name",
					VolumeSource: api.VolumeSource{
						GCEPersistentDisk: &api.GCEPersistentDiskVolumeSource{
							PDName: "fake-device1",
						},
					},
				},
			},
		},
	}

	volumeSpec := &volume.Spec{Volume: &pod.Spec.Volumes[0]}
	podName := volumehelper.GetUniquePodName(pod)

	// Act
	generatedVolumeName, err := dsw.AddPodToVolume(
		podName, pod, volumeSpec, volumeSpec.Name(), "" /* volumeGidValue */)

	// Assert
	if err != nil {
		t.Fatalf("AddPodToVolume failed. Expected: <no error> Actual: <%v>", err)
	}

	verifyVolumeExists(t, generatedVolumeName, dsw)
	verifyVolumeExistsInVolumesToMount(t, generatedVolumeName, dsw)
	verifyPodExistsInVolumeDsw(t, podName, generatedVolumeName, dsw)
}

// getVolumesForPodHelper is a helper method implements the common logic for
// the GetVolumesForPod methods.
// XXX: https://github.com/kubernetes/kubernetes/issues/27197 mutating the pod
// object is bad, and should be avoided.
func (vm *volumeManager) getVolumesForPodHelper(
	podName types.UniquePodName, pod *api.Pod) container.VolumeMap {
	if pod != nil {
		podName = volumehelper.GetUniquePodName(pod)
	}
	podVolumes := make(container.VolumeMap)
	for _, mountedVolume := range vm.actualStateOfWorld.GetMountedVolumesForPod(podName) {
		podVolumes[mountedVolume.OuterVolumeSpecName] =
			container.VolumeInfo{Mounter: mountedVolume.Mounter}
		if pod != nil {
			err := applyPersistentVolumeAnnotations(
				mountedVolume.VolumeGidValue, pod)
			if err != nil {
				glog.Errorf("applyPersistentVolumeAnnotations failed for pod %q volume %q with: %v",
					podName,
					mountedVolume.VolumeName,
					err)
			}
		}
	}
	return podVolumes
}

// GenerateRunContainerOptions generates the RunContainerOptions, which can be used by
// the container runtime to set parameters for launching a container.
func (kl *Kubelet) GenerateRunContainerOptions(pod *api.Pod, container *api.Container, podIP string) (*kubecontainer.RunContainerOptions, error) {
	var err error
	opts := &kubecontainer.RunContainerOptions{CgroupParent: kl.cgroupRoot}
	hostname, hostDomainName, err := kl.GeneratePodHostNameAndDomain(pod)
	if err != nil {
		return nil, err
	}
	opts.Hostname = hostname
	podName := volumehelper.GetUniquePodName(pod)
	volumes := kl.volumeManager.GetMountedVolumesForPod(podName)

	opts.PortMappings = makePortMappings(container)

	opts.Mounts, err = makeMounts(pod, kl.getPodDir(pod.UID), container, hostname, hostDomainName, podIP, volumes)
	if err != nil {
		return nil, err
	}
	opts.Envs, err = kl.makeEnvironmentVariables(pod, container, podIP)
	if err != nil {
		return nil, err
	}

	if len(container.TerminationMessagePath) != 0 {
		p := kl.getPodContainerDir(pod.UID, container.Name)
		if err := os.MkdirAll(p, 0750); err != nil {
			glog.Errorf("Error on creating %q: %v", p, err)
		} else {
			opts.PodContainerDir = p
		}
	}

	opts.DNS, opts.DNSSearch, err = kl.GetClusterDNS(pod)
	if err != nil {
		return nil, err
	}

	return opts, nil
}