/* Copyright 2014 Google Inc. All rights reserved. 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. */ package kubelet import ( "bytes" "errors" "fmt" "io" "io/ioutil" "net/http" "os" "path" "reflect" "regexp" "sort" "strconv" "strings" "sync" "testing" "time" "github.com/GoogleCloudPlatform/kubernetes/pkg/api" "github.com/GoogleCloudPlatform/kubernetes/pkg/api/resource" "github.com/GoogleCloudPlatform/kubernetes/pkg/capabilities" "github.com/GoogleCloudPlatform/kubernetes/pkg/client/record" "github.com/GoogleCloudPlatform/kubernetes/pkg/client/testclient" "github.com/GoogleCloudPlatform/kubernetes/pkg/kubelet/cadvisor" "github.com/GoogleCloudPlatform/kubernetes/pkg/kubelet/container" kubecontainer "github.com/GoogleCloudPlatform/kubernetes/pkg/kubelet/container" "github.com/GoogleCloudPlatform/kubernetes/pkg/kubelet/dockertools" "github.com/GoogleCloudPlatform/kubernetes/pkg/kubelet/metrics" "github.com/GoogleCloudPlatform/kubernetes/pkg/kubelet/network" "github.com/GoogleCloudPlatform/kubernetes/pkg/types" "github.com/GoogleCloudPlatform/kubernetes/pkg/util" "github.com/GoogleCloudPlatform/kubernetes/pkg/version" "github.com/GoogleCloudPlatform/kubernetes/pkg/volume" _ "github.com/GoogleCloudPlatform/kubernetes/pkg/volume/host_path" "github.com/fsouza/go-dockerclient" cadvisorApi "github.com/google/cadvisor/info/v1" ) func init() { api.ForTesting_ReferencesAllowBlankSelfLinks = true util.ReallyCrash = true } type TestKubelet struct { kubelet *Kubelet fakeDocker *dockertools.FakeDockerClient fakeCadvisor *cadvisor.Mock fakeKubeClient *testclient.Fake waitGroup *sync.WaitGroup fakeMirrorClient *fakeMirrorClient } func newTestKubelet(t *testing.T) *TestKubelet { fakeDocker := &dockertools.FakeDockerClient{RemovedImages: util.StringSet{}} fakeDockerCache := dockertools.NewFakeDockerCache(fakeDocker) fakeRecorder := &record.FakeRecorder{} fakeKubeClient := &testclient.Fake{} kubelet := &Kubelet{} kubelet.dockerClient = fakeDocker kubelet.dockerCache = fakeDockerCache kubelet.kubeClient = fakeKubeClient kubelet.dockerPuller = &dockertools.FakeDockerPuller{} kubelet.hostname = "testnode" kubelet.networkPlugin, _ = network.InitNetworkPlugin([]network.NetworkPlugin{}, "", network.NewFakeHost(nil)) if tempDir, err := ioutil.TempDir("/tmp", "kubelet_test."); err != nil { t.Fatalf("can't make a temp rootdir: %v", err) } else { kubelet.rootDirectory = tempDir } if err := os.MkdirAll(kubelet.rootDirectory, 0750); err != nil { t.Fatalf("can't mkdir(%q): %v", kubelet.rootDirectory, err) } waitGroup := new(sync.WaitGroup) kubelet.podWorkers = newPodWorkers( fakeDockerCache, func(pod *api.Pod, mirrorPod *api.Pod, runningPod container.Pod) error { err := kubelet.syncPod(pod, mirrorPod, runningPod) waitGroup.Done() return err }, fakeRecorder) kubelet.sourcesReady = func() bool { return true } kubelet.masterServiceNamespace = api.NamespaceDefault kubelet.serviceLister = testServiceLister{} kubelet.nodeLister = testNodeLister{} kubelet.readinessManager = kubecontainer.NewReadinessManager() kubelet.recorder = fakeRecorder kubelet.statusManager = newStatusManager(fakeKubeClient) if err := kubelet.setupDataDirs(); err != nil { t.Fatalf("can't initialize kubelet data dirs: %v", err) } mockCadvisor := &cadvisor.Mock{} kubelet.cadvisor = mockCadvisor podManager, fakeMirrorClient := newFakePodManager() kubelet.podManager = podManager kubelet.containerRefManager = kubecontainer.NewRefManager() kubelet.containerManager = dockertools.NewDockerManager(fakeDocker, fakeRecorder) return &TestKubelet{kubelet, fakeDocker, mockCadvisor, fakeKubeClient, waitGroup, fakeMirrorClient} } func verifyCalls(t *testing.T, fakeDocker *dockertools.FakeDockerClient, calls []string) { err := fakeDocker.AssertCalls(calls) if err != nil { t.Error(err) } } func verifyUnorderedCalls(t *testing.T, fakeDocker *dockertools.FakeDockerClient, calls []string) { err := fakeDocker.AssertUnorderedCalls(calls) if err != nil { t.Error(err) } } func verifyStringArrayEquals(t *testing.T, actual, expected []string) { invalid := len(actual) != len(expected) if !invalid { for ix, value := range actual { if expected[ix] != value { invalid = true } } } if invalid { t.Errorf("Expected: %#v, Actual: %#v", expected, actual) } } func verifyStringArrayEqualsAnyOrder(t *testing.T, actual, expected []string) { act := make([]string, len(actual)) exp := make([]string, len(expected)) copy(act, actual) copy(exp, expected) sort.StringSlice(act).Sort() sort.StringSlice(exp).Sort() if !reflect.DeepEqual(exp, act) { t.Errorf("Expected(sorted): %#v, Actual(sorted): %#v", exp, act) } } func verifyBoolean(t *testing.T, expected, value bool) { if expected != value { t.Errorf("Unexpected boolean. Expected %t. Found %t", expected, value) } } func TestKubeletDirs(t *testing.T) { testKubelet := newTestKubelet(t) kubelet := testKubelet.kubelet root := kubelet.rootDirectory var exp, got string got = kubelet.getPodsDir() exp = path.Join(root, "pods") if got != exp { t.Errorf("expected %q', got %q", exp, got) } got = kubelet.getPluginsDir() exp = path.Join(root, "plugins") if got != exp { t.Errorf("expected %q', got %q", exp, got) } got = kubelet.getPluginDir("foobar") exp = path.Join(root, "plugins/foobar") if got != exp { t.Errorf("expected %q', got %q", exp, got) } got = kubelet.getPodDir("abc123") exp = path.Join(root, "pods/abc123") if got != exp { t.Errorf("expected %q', got %q", exp, got) } got = kubelet.getPodVolumesDir("abc123") exp = path.Join(root, "pods/abc123/volumes") if got != exp { t.Errorf("expected %q', got %q", exp, got) } got = kubelet.getPodVolumeDir("abc123", "plugin", "foobar") exp = path.Join(root, "pods/abc123/volumes/plugin/foobar") if got != exp { t.Errorf("expected %q', got %q", exp, got) } got = kubelet.getPodPluginsDir("abc123") exp = path.Join(root, "pods/abc123/plugins") if got != exp { t.Errorf("expected %q', got %q", exp, got) } got = kubelet.getPodPluginDir("abc123", "foobar") exp = path.Join(root, "pods/abc123/plugins/foobar") if got != exp { t.Errorf("expected %q', got %q", exp, got) } got = kubelet.getPodContainerDir("abc123", "def456") exp = path.Join(root, "pods/abc123/containers/def456") if got != exp { t.Errorf("expected %q', got %q", exp, got) } } func TestKubeletDirsCompat(t *testing.T) { testKubelet := newTestKubelet(t) kubelet := testKubelet.kubelet root := kubelet.rootDirectory if err := os.MkdirAll(root, 0750); err != nil { t.Fatalf("can't mkdir(%q): %s", root, err) } var exp, got string // Old-style pod dir. if err := os.MkdirAll(fmt.Sprintf("%s/oldpod", root), 0750); err != nil { t.Fatalf("can't mkdir(%q): %s", root, err) } // New-style pod dir. if err := os.MkdirAll(fmt.Sprintf("%s/pods/newpod", root), 0750); err != nil { t.Fatalf("can't mkdir(%q): %s", root, err) } // Both-style pod dir. if err := os.MkdirAll(fmt.Sprintf("%s/bothpod", root), 0750); err != nil { t.Fatalf("can't mkdir(%q): %s", root, err) } if err := os.MkdirAll(fmt.Sprintf("%s/pods/bothpod", root), 0750); err != nil { t.Fatalf("can't mkdir(%q): %s", root, err) } got = kubelet.getPodDir("oldpod") exp = path.Join(root, "oldpod") if got != exp { t.Errorf("expected %q', got %q", exp, got) } got = kubelet.getPodDir("newpod") exp = path.Join(root, "pods/newpod") if got != exp { t.Errorf("expected %q', got %q", exp, got) } got = kubelet.getPodDir("bothpod") exp = path.Join(root, "pods/bothpod") if got != exp { t.Errorf("expected %q', got %q", exp, got) } got = kubelet.getPodDir("neitherpod") exp = path.Join(root, "pods/neitherpod") if got != exp { t.Errorf("expected %q', got %q", exp, got) } root = kubelet.getPodDir("newpod") // Old-style container dir. if err := os.MkdirAll(fmt.Sprintf("%s/oldctr", root), 0750); err != nil { t.Fatalf("can't mkdir(%q): %s", root, err) } // New-style container dir. if err := os.MkdirAll(fmt.Sprintf("%s/containers/newctr", root), 0750); err != nil { t.Fatalf("can't mkdir(%q): %s", root, err) } // Both-style container dir. if err := os.MkdirAll(fmt.Sprintf("%s/bothctr", root), 0750); err != nil { t.Fatalf("can't mkdir(%q): %s", root, err) } if err := os.MkdirAll(fmt.Sprintf("%s/containers/bothctr", root), 0750); err != nil { t.Fatalf("can't mkdir(%q): %s", root, err) } got = kubelet.getPodContainerDir("newpod", "oldctr") exp = path.Join(root, "oldctr") if got != exp { t.Errorf("expected %q', got %q", exp, got) } got = kubelet.getPodContainerDir("newpod", "newctr") exp = path.Join(root, "containers/newctr") if got != exp { t.Errorf("expected %q', got %q", exp, got) } got = kubelet.getPodContainerDir("newpod", "bothctr") exp = path.Join(root, "containers/bothctr") if got != exp { t.Errorf("expected %q', got %q", exp, got) } got = kubelet.getPodContainerDir("newpod", "neitherctr") exp = path.Join(root, "containers/neitherctr") if got != exp { t.Errorf("expected %q', got %q", exp, got) } } func apiContainerToContainer(c docker.APIContainers) container.Container { dockerName, hash, err := dockertools.ParseDockerName(c.Names[0]) if err != nil { return container.Container{} } return container.Container{ ID: types.UID(c.ID), Name: dockerName.ContainerName, Hash: hash, } } func dockerContainersToPod(containers dockertools.DockerContainers) container.Pod { var pod container.Pod for _, c := range containers { dockerName, hash, err := dockertools.ParseDockerName(c.Names[0]) if err != nil { continue } pod.Containers = append(pod.Containers, &container.Container{ ID: types.UID(c.ID), Name: dockerName.ContainerName, Hash: hash, Image: c.Image, }) // TODO(yifan): Only one evaluation is enough. pod.ID = dockerName.PodUID name, namespace, _ := kubecontainer.ParsePodFullName(dockerName.PodFullName) pod.Name = name pod.Namespace = namespace } return pod } func TestKillContainerWithError(t *testing.T) { containers := []docker.APIContainers{ { ID: "1234", Names: []string{"/k8s_foo_qux_new_1234_42"}, }, { ID: "5678", Names: []string{"/k8s_bar_qux_new_5678_42"}, }, } fakeDocker := &dockertools.FakeDockerClient{ Err: fmt.Errorf("sample error"), ContainerList: append([]docker.APIContainers{}, containers...), } testKubelet := newTestKubelet(t) kubelet := testKubelet.kubelet for _, c := range fakeDocker.ContainerList { kubelet.readinessManager.SetReadiness(c.ID, true) } kubelet.dockerClient = fakeDocker c := apiContainerToContainer(fakeDocker.ContainerList[0]) err := kubelet.killContainer(&c) if err == nil { t.Errorf("expected error, found nil") } verifyCalls(t, fakeDocker, []string{"stop"}) killedContainer := containers[0] liveContainer := containers[1] ready := kubelet.readinessManager.GetReadiness(killedContainer.ID) if ready { t.Errorf("exepcted container entry ID '%v' to not be found. states: %+v", killedContainer.ID, ready) } ready = kubelet.readinessManager.GetReadiness(liveContainer.ID) if !ready { t.Errorf("exepcted container entry ID '%v' to be found. states: %+v", liveContainer.ID, ready) } } func TestKillContainer(t *testing.T) { containers := []docker.APIContainers{ { ID: "1234", Names: []string{"/k8s_foo_qux_new_1234_42"}, }, { ID: "5678", Names: []string{"/k8s_bar_qux_new_5678_42"}, }, } testKubelet := newTestKubelet(t) kubelet := testKubelet.kubelet fakeDocker := testKubelet.fakeDocker fakeDocker.ContainerList = append([]docker.APIContainers{}, containers...) fakeDocker.Container = &docker.Container{ Name: "foobar", } for _, c := range fakeDocker.ContainerList { kubelet.readinessManager.SetReadiness(c.ID, true) } c := apiContainerToContainer(fakeDocker.ContainerList[0]) err := kubelet.killContainer(&c) if err != nil { t.Errorf("unexpected error: %v", err) } verifyCalls(t, fakeDocker, []string{"stop"}) killedContainer := containers[0] liveContainer := containers[1] ready := kubelet.readinessManager.GetReadiness(killedContainer.ID) if ready { t.Errorf("exepcted container entry ID '%v' to not be found. states: %+v", killedContainer.ID, ready) } ready = kubelet.readinessManager.GetReadiness(liveContainer.ID) if !ready { t.Errorf("exepcted container entry ID '%v' to be found. states: %+v", liveContainer.ID, ready) } } var emptyPodUIDs map[types.UID]metrics.SyncPodType func TestSyncPodsDoesNothing(t *testing.T) { testKubelet := newTestKubelet(t) testKubelet.fakeCadvisor.On("MachineInfo").Return(&cadvisorApi.MachineInfo{}, nil) kubelet := testKubelet.kubelet fakeDocker := testKubelet.fakeDocker waitGroup := testKubelet.waitGroup container := api.Container{Name: "bar"} fakeDocker.ContainerList = []docker.APIContainers{ { // format is // k8s____ Names: []string{"/k8s_bar." + strconv.FormatUint(dockertools.HashContainer(&container), 16) + "_foo_new_12345678_0"}, ID: "1234", }, { // pod infra container Names: []string{"/k8s_POD_foo_new_12345678_0"}, ID: "9876", }, } pods := []api.Pod{ { ObjectMeta: api.ObjectMeta{ UID: "12345678", Name: "foo", Namespace: "new", }, Spec: api.PodSpec{ Containers: []api.Container{ container, }, }, }, } kubelet.podManager.SetPods(pods) waitGroup.Add(1) err := kubelet.SyncPods(pods, emptyPodUIDs, map[string]api.Pod{}, time.Now()) if err != nil { t.Errorf("unexpected error: %v", err) } waitGroup.Wait() verifyCalls(t, fakeDocker, []string{"list", "list", "list", "inspect_container", "inspect_container", "list", "inspect_container", "inspect_container"}) } func TestSyncPodsWithTerminationLog(t *testing.T) { testKubelet := newTestKubelet(t) testKubelet.fakeCadvisor.On("MachineInfo").Return(&cadvisorApi.MachineInfo{}, nil) kubelet := testKubelet.kubelet fakeDocker := testKubelet.fakeDocker waitGroup := testKubelet.waitGroup container := api.Container{ Name: "bar", TerminationMessagePath: "/dev/somepath", } fakeDocker.ContainerList = []docker.APIContainers{} pods := []api.Pod{ { ObjectMeta: api.ObjectMeta{ UID: "12345678", Name: "foo", Namespace: "new", }, Spec: api.PodSpec{ Containers: []api.Container{ container, }, }, }, } kubelet.podManager.SetPods(pods) waitGroup.Add(1) err := kubelet.SyncPods(pods, emptyPodUIDs, map[string]api.Pod{}, time.Now()) if err != nil { t.Errorf("unexpected error: %v", err) } waitGroup.Wait() verifyCalls(t, fakeDocker, []string{ "list", "list", "list", "create", "start", "inspect_container", "create", "start", "list", "inspect_container", "inspect_container"}) fakeDocker.Lock() parts := strings.Split(fakeDocker.Container.HostConfig.Binds[0], ":") if !matchString(t, kubelet.getPodContainerDir("12345678", "bar")+"/k8s_bar\\.[a-f0-9]", parts[0]) { t.Errorf("Unexpected host path: %s", parts[0]) } if parts[1] != "/dev/somepath" { t.Errorf("Unexpected container path: %s", parts[1]) } fakeDocker.Unlock() } func matchString(t *testing.T, pattern, str string) bool { match, err := regexp.MatchString(pattern, str) if err != nil { t.Logf("unexpected error: %v", err) } return match } func TestSyncPodsCreatesNetAndContainer(t *testing.T) { testKubelet := newTestKubelet(t) testKubelet.fakeCadvisor.On("MachineInfo").Return(&cadvisorApi.MachineInfo{}, nil) kubelet := testKubelet.kubelet fakeDocker := testKubelet.fakeDocker waitGroup := testKubelet.waitGroup kubelet.podInfraContainerImage = "custom_image_name" fakeDocker.ContainerList = []docker.APIContainers{} pods := []api.Pod{ { ObjectMeta: api.ObjectMeta{ UID: "12345678", Name: "foo", Namespace: "new", }, Spec: api.PodSpec{ Containers: []api.Container{ {Name: "bar"}, }, }, }, } kubelet.podManager.SetPods(pods) waitGroup.Add(1) err := kubelet.SyncPods(pods, emptyPodUIDs, map[string]api.Pod{}, time.Now()) if err != nil { t.Errorf("unexpected error: %v", err) } waitGroup.Wait() verifyCalls(t, fakeDocker, []string{ "list", "list", "list", "create", "start", "inspect_container", "create", "start", "list", "inspect_container", "inspect_container"}) fakeDocker.Lock() found := false for _, c := range fakeDocker.ContainerList { if c.Image == "custom_image_name" && strings.HasPrefix(c.Names[0], "/k8s_POD") { found = true } } if !found { t.Errorf("Custom pod infra container not found: %v", fakeDocker.ContainerList) } if len(fakeDocker.Created) != 2 || !matchString(t, "k8s_POD\\.[a-f0-9]+_foo_new_", fakeDocker.Created[0]) || !matchString(t, "k8s_bar\\.[a-f0-9]+_foo_new_", fakeDocker.Created[1]) { t.Errorf("Unexpected containers created %v", fakeDocker.Created) } fakeDocker.Unlock() } func TestSyncPodsCreatesNetAndContainerPullsImage(t *testing.T) { testKubelet := newTestKubelet(t) testKubelet.fakeCadvisor.On("MachineInfo").Return(&cadvisorApi.MachineInfo{}, nil) kubelet := testKubelet.kubelet fakeDocker := testKubelet.fakeDocker waitGroup := testKubelet.waitGroup puller := kubelet.dockerPuller.(*dockertools.FakeDockerPuller) puller.HasImages = []string{} kubelet.podInfraContainerImage = "custom_image_name" fakeDocker.ContainerList = []docker.APIContainers{} pods := []api.Pod{ { ObjectMeta: api.ObjectMeta{ UID: "12345678", Name: "foo", Namespace: "new", }, Spec: api.PodSpec{ Containers: []api.Container{ {Name: "bar", Image: "something", ImagePullPolicy: "IfNotPresent"}, }, }, }, } waitGroup.Add(1) kubelet.podManager.SetPods(pods) err := kubelet.SyncPods(pods, emptyPodUIDs, map[string]api.Pod{}, time.Now()) if err != nil { t.Errorf("unexpected error: %v", err) } waitGroup.Wait() verifyCalls(t, fakeDocker, []string{ "list", "list", "list", "create", "start", "inspect_container", "create", "start", "list", "inspect_container", "inspect_container"}) fakeDocker.Lock() if !reflect.DeepEqual(puller.ImagesPulled, []string{"custom_image_name", "something"}) { t.Errorf("Unexpected pulled containers: %v", puller.ImagesPulled) } if len(fakeDocker.Created) != 2 || !matchString(t, "k8s_POD\\.[a-f0-9]+_foo_new_", fakeDocker.Created[0]) || !matchString(t, "k8s_bar\\.[a-f0-9]+_foo_new_", fakeDocker.Created[1]) { t.Errorf("Unexpected containers created %v", fakeDocker.Created) } fakeDocker.Unlock() } func TestSyncPodsWithPodInfraCreatesContainer(t *testing.T) { testKubelet := newTestKubelet(t) testKubelet.fakeCadvisor.On("MachineInfo").Return(&cadvisorApi.MachineInfo{}, nil) kubelet := testKubelet.kubelet fakeDocker := testKubelet.fakeDocker waitGroup := testKubelet.waitGroup fakeDocker.ContainerList = []docker.APIContainers{ { // pod infra container Names: []string{"/k8s_POD_foo_new_12345678_0"}, ID: "9876", }, } pods := []api.Pod{ { ObjectMeta: api.ObjectMeta{ UID: "12345678", Name: "foo", Namespace: "new", }, Spec: api.PodSpec{ Containers: []api.Container{ {Name: "bar"}, }, }, }, } waitGroup.Add(1) kubelet.podManager.SetPods(pods) err := kubelet.SyncPods(pods, emptyPodUIDs, map[string]api.Pod{}, time.Now()) if err != nil { t.Errorf("unexpected error: %v", err) } waitGroup.Wait() verifyCalls(t, fakeDocker, []string{ "list", "list", "list", "inspect_container", "list", "create", "start", "list", "inspect_container", "inspect_container"}) fakeDocker.Lock() if len(fakeDocker.Created) != 1 || !matchString(t, "k8s_bar\\.[a-f0-9]+_foo_new_", fakeDocker.Created[0]) { t.Errorf("Unexpected containers created %v", fakeDocker.Created) } fakeDocker.Unlock() } func TestSyncPodsWithPodInfraCreatesContainerCallsHandler(t *testing.T) { testKubelet := newTestKubelet(t) testKubelet.fakeCadvisor.On("MachineInfo").Return(&cadvisorApi.MachineInfo{}, nil) kubelet := testKubelet.kubelet fakeDocker := testKubelet.fakeDocker waitGroup := testKubelet.waitGroup fakeHttp := fakeHTTP{} kubelet.httpClient = &fakeHttp fakeDocker.ContainerList = []docker.APIContainers{ { // pod infra container Names: []string{"/k8s_POD_foo_new_12345678_0"}, ID: "9876", }, } pods := []api.Pod{ { ObjectMeta: api.ObjectMeta{ UID: "12345678", Name: "foo", Namespace: "new", }, Spec: api.PodSpec{ Containers: []api.Container{ { Name: "bar", Lifecycle: &api.Lifecycle{ PostStart: &api.Handler{ HTTPGet: &api.HTTPGetAction{ Host: "foo", Port: util.IntOrString{IntVal: 8080, Kind: util.IntstrInt}, Path: "bar", }, }, }, }, }, }, }, } waitGroup.Add(1) kubelet.podManager.SetPods(pods) err := kubelet.SyncPods(pods, emptyPodUIDs, map[string]api.Pod{}, time.Now()) if err != nil { t.Errorf("unexpected error: %v", err) } waitGroup.Wait() verifyCalls(t, fakeDocker, []string{ "list", "list", "list", "inspect_container", "list", "create", "start", "list", "inspect_container", "inspect_container"}) fakeDocker.Lock() if len(fakeDocker.Created) != 1 || !matchString(t, "k8s_bar\\.[a-f0-9]+_foo_new_", fakeDocker.Created[0]) { t.Errorf("Unexpected containers created %v", fakeDocker.Created) } fakeDocker.Unlock() if fakeHttp.url != "http://foo:8080/bar" { t.Errorf("Unexpected handler: %s", fakeHttp.url) } } func TestSyncPodsDeletesWithNoPodInfraContainer(t *testing.T) { testKubelet := newTestKubelet(t) testKubelet.fakeCadvisor.On("MachineInfo").Return(&cadvisorApi.MachineInfo{}, nil) kubelet := testKubelet.kubelet fakeDocker := testKubelet.fakeDocker waitGroup := testKubelet.waitGroup fakeDocker.ContainerList = []docker.APIContainers{ { // format is // k8s___ Names: []string{"/k8s_bar1_foo1_new_12345678_0"}, ID: "1234", }, { // format is // k8s___ Names: []string{"/k8s_bar2_foo2_new_87654321_0"}, ID: "5678", }, { // format is // k8s___ Names: []string{"/k8s_POD_foo2_new_87654321_0"}, ID: "8765", }, } pods := []api.Pod{ { ObjectMeta: api.ObjectMeta{ UID: "12345678", Name: "foo1", Namespace: "new", }, Spec: api.PodSpec{ Containers: []api.Container{ {Name: "bar1"}, }, }, }, { ObjectMeta: api.ObjectMeta{ UID: "87654321", Name: "foo2", Namespace: "new", }, Spec: api.PodSpec{ Containers: []api.Container{ {Name: "bar2"}, }, }, }, } waitGroup.Add(2) kubelet.podManager.SetPods(pods) err := kubelet.SyncPods(pods, emptyPodUIDs, map[string]api.Pod{}, time.Now()) if err != nil { t.Errorf("unexpected error: %v", err) } waitGroup.Wait() verifyUnorderedCalls(t, fakeDocker, []string{ "list", "list", "list", "list", "inspect_container", "inspect_container", "list", "inspect_container", "inspect_container", "stop", "create", "start", "inspect_container", "create", "start", "list", "inspect_container", "inspect_container"}) // A map iteration is used to delete containers, so must not depend on // order here. expectedToStop := map[string]bool{ "1234": true, } fakeDocker.Lock() if len(fakeDocker.Stopped) != 1 || !expectedToStop[fakeDocker.Stopped[0]] { t.Errorf("Wrong containers were stopped: %v", fakeDocker.Stopped) } fakeDocker.Unlock() } func TestSyncPodsDeletesWhenSourcesAreReady(t *testing.T) { ready := false testKubelet := newTestKubelet(t) testKubelet.fakeCadvisor.On("MachineInfo").Return(&cadvisorApi.MachineInfo{}, nil) kubelet := testKubelet.kubelet fakeDocker := testKubelet.fakeDocker kubelet.sourcesReady = func() bool { return ready } fakeDocker.ContainerList = []docker.APIContainers{ { // the k8s prefix is required for the kubelet to manage the container Names: []string{"/k8s_foo_bar_new_12345678_42"}, ID: "1234", }, { // pod infra container Names: []string{"/k8s_POD_foo_new_12345678_42"}, ID: "9876", }, } if err := kubelet.SyncPods([]api.Pod{}, emptyPodUIDs, map[string]api.Pod{}, time.Now()); err != nil { t.Errorf("unexpected error: %v", err) } // Validate nothing happened. verifyCalls(t, fakeDocker, []string{"list"}) fakeDocker.ClearCalls() ready = true if err := kubelet.SyncPods([]api.Pod{}, emptyPodUIDs, map[string]api.Pod{}, time.Now()); err != nil { t.Errorf("unexpected error: %v", err) } verifyCalls(t, fakeDocker, []string{"list", "stop", "stop", "inspect_container", "inspect_container"}) // A map iteration is used to delete containers, so must not depend on // order here. expectedToStop := map[string]bool{ "1234": true, "9876": true, } if len(fakeDocker.Stopped) != 2 || !expectedToStop[fakeDocker.Stopped[0]] || !expectedToStop[fakeDocker.Stopped[1]] { t.Errorf("Wrong containers were stopped: %v", fakeDocker.Stopped) } } func TestSyncPodsDeletes(t *testing.T) { testKubelet := newTestKubelet(t) testKubelet.fakeCadvisor.On("MachineInfo").Return(&cadvisorApi.MachineInfo{}, nil) kubelet := testKubelet.kubelet fakeDocker := testKubelet.fakeDocker fakeDocker.ContainerList = []docker.APIContainers{ { // the k8s prefix is required for the kubelet to manage the container Names: []string{"/k8s_foo_bar_new_12345678_42"}, ID: "1234", }, { // pod infra container Names: []string{"/k8s_POD_foo_new_12345678_42"}, ID: "9876", }, { Names: []string{"foo"}, ID: "4567", }, } err := kubelet.SyncPods([]api.Pod{}, emptyPodUIDs, map[string]api.Pod{}, time.Now()) if err != nil { t.Errorf("unexpected error: %v", err) } verifyCalls(t, fakeDocker, []string{"list", "stop", "stop", "inspect_container", "inspect_container"}) // A map iteration is used to delete containers, so must not depend on // order here. expectedToStop := map[string]bool{ "1234": true, "9876": true, } if len(fakeDocker.Stopped) != 2 || !expectedToStop[fakeDocker.Stopped[0]] || !expectedToStop[fakeDocker.Stopped[1]] { t.Errorf("Wrong containers were stopped: %v", fakeDocker.Stopped) } } func TestSyncPodDeletesDuplicate(t *testing.T) { testKubelet := newTestKubelet(t) kubelet := testKubelet.kubelet fakeDocker := testKubelet.fakeDocker dockerContainers := dockertools.DockerContainers{ "1234": &docker.APIContainers{ // the k8s prefix is required for the kubelet to manage the container Names: []string{"/k8s_foo_bar_new_12345678_1111"}, ID: "1234", }, "9876": &docker.APIContainers{ // pod infra container Names: []string{"/k8s_POD_bar_new_12345678_2222"}, ID: "9876", }, "4567": &docker.APIContainers{ // Duplicate for the same container. Names: []string{"/k8s_foo_bar_new_12345678_3333"}, ID: "4567", }, } bound := api.Pod{ ObjectMeta: api.ObjectMeta{ UID: "12345678", Name: "bar", Namespace: "new", }, Spec: api.PodSpec{ Containers: []api.Container{ {Name: "foo"}, }, }, } pods := []api.Pod{bound} kubelet.podManager.SetPods(pods) err := kubelet.syncPod(&bound, nil, dockerContainersToPod(dockerContainers)) if err != nil { t.Errorf("unexpected error: %v", err) } verifyCalls(t, fakeDocker, []string{"list", "stop", "list"}) // Expect one of the duplicates to be killed. if len(fakeDocker.Stopped) != 1 || (fakeDocker.Stopped[0] != "1234" && fakeDocker.Stopped[0] != "4567") { t.Errorf("Wrong containers were stopped: %v", fakeDocker.Stopped) } } func TestSyncPodBadHash(t *testing.T) { testKubelet := newTestKubelet(t) kubelet := testKubelet.kubelet fakeDocker := testKubelet.fakeDocker dockerContainers := dockertools.DockerContainers{ "1234": &docker.APIContainers{ // the k8s prefix is required for the kubelet to manage the container Names: []string{"/k8s_bar.1234_foo_new_12345678_42"}, ID: "1234", }, "9876": &docker.APIContainers{ // pod infra container Names: []string{"/k8s_POD_foo_new_12345678_42"}, ID: "9876", }, } bound := api.Pod{ ObjectMeta: api.ObjectMeta{ UID: "12345678", Name: "foo", Namespace: "new", }, Spec: api.PodSpec{ Containers: []api.Container{ {Name: "bar"}, }, }, } pods := []api.Pod{bound} kubelet.podManager.SetPods(pods) err := kubelet.syncPod(&bound, nil, dockerContainersToPod(dockerContainers)) if err != nil { t.Errorf("unexpected error: %v", err) } //verifyCalls(t, fakeDocker, []string{"list", "stop", "list", "create", "start", "stop", "create", "start", "inspect_container"}) verifyCalls(t, fakeDocker, []string{"list", "stop", "stop", "create", "start", "inspect_container", "create", "start", "list", "inspect_container", "inspect_container"}) // A map interation is used to delete containers, so must not depend on // order here. expectedToStop := map[string]bool{ "1234": true, "9876": true, } if len(fakeDocker.Stopped) != 2 || (!expectedToStop[fakeDocker.Stopped[0]] && !expectedToStop[fakeDocker.Stopped[1]]) { t.Errorf("Wrong containers were stopped: %v", fakeDocker.Stopped) } } func TestSyncPodUnhealthy(t *testing.T) { testKubelet := newTestKubelet(t) kubelet := testKubelet.kubelet fakeDocker := testKubelet.fakeDocker dockerContainers := dockertools.DockerContainers{ "1234": &docker.APIContainers{ // the k8s prefix is required for the kubelet to manage the container Names: []string{"/k8s_bar_foo_new_12345678_42"}, ID: "1234", }, "9876": &docker.APIContainers{ // pod infra container Names: []string{"/k8s_POD_foo_new_12345678_42"}, ID: "9876", }, } bound := api.Pod{ ObjectMeta: api.ObjectMeta{ UID: "12345678", Name: "foo", Namespace: "new", }, Spec: api.PodSpec{ Containers: []api.Container{ {Name: "bar", LivenessProbe: &api.Probe{ // Always returns healthy == false }, }, }, }, } pods := []api.Pod{bound} kubelet.podManager.SetPods(pods) err := kubelet.syncPod(&bound, nil, dockerContainersToPod(dockerContainers)) if err != nil { t.Errorf("unexpected error: %v", err) } verifyCalls(t, fakeDocker, []string{"list", "stop", "create", "start", "list", "inspect_container"}) // A map interation is used to delete containers, so must not depend on // order here. expectedToStop := map[string]bool{ "1234": true, } if len(fakeDocker.Stopped) != len(expectedToStop) || !expectedToStop[fakeDocker.Stopped[0]] { t.Errorf("Wrong containers were stopped: %v", fakeDocker.Stopped) } } func TestMountExternalVolumes(t *testing.T) { testKubelet := newTestKubelet(t) kubelet := testKubelet.kubelet kubelet.volumePluginMgr.InitPlugins([]volume.VolumePlugin{&volume.FakeVolumePlugin{"fake", nil}}, &volumeHost{kubelet}) pod := api.Pod{ ObjectMeta: api.ObjectMeta{ UID: "12345678", Name: "foo", Namespace: "test", }, Spec: api.PodSpec{ Volumes: []api.Volume{ { Name: "vol1", VolumeSource: api.VolumeSource{}, }, }, }, } podVolumes, err := kubelet.mountExternalVolumes(&pod) if err != nil { t.Errorf("Expected sucess: %v", err) } expectedPodVolumes := []string{"vol1"} if len(expectedPodVolumes) != len(podVolumes) { t.Errorf("Unexpected volumes. Expected %#v got %#v. Manifest was: %#v", expectedPodVolumes, podVolumes, pod) } for _, name := range expectedPodVolumes { if _, ok := podVolumes[name]; !ok { t.Errorf("api.Pod volumes map is missing key: %s. %#v", name, podVolumes) } } } func TestGetPodVolumesFromDisk(t *testing.T) { testKubelet := newTestKubelet(t) kubelet := testKubelet.kubelet plug := &volume.FakeVolumePlugin{"fake", nil} kubelet.volumePluginMgr.InitPlugins([]volume.VolumePlugin{plug}, &volumeHost{kubelet}) volsOnDisk := []struct { podUID types.UID volName string }{ {"pod1", "vol1"}, {"pod1", "vol2"}, {"pod2", "vol1"}, } expectedPaths := []string{} for i := range volsOnDisk { fv := volume.FakeVolume{volsOnDisk[i].podUID, volsOnDisk[i].volName, plug} fv.SetUp() expectedPaths = append(expectedPaths, fv.GetPath()) } volumesFound := kubelet.getPodVolumesFromDisk() if len(volumesFound) != len(expectedPaths) { t.Errorf("Expected to find %d cleaners, got %d", len(expectedPaths), len(volumesFound)) } for _, ep := range expectedPaths { found := false for _, cl := range volumesFound { if ep == cl.GetPath() { found = true break } } if !found { t.Errorf("Could not find a volume with path %s", ep) } } } type stubVolume struct { path string } func (f *stubVolume) GetPath() string { return f.path } func TestMakeVolumesAndBinds(t *testing.T) { container := api.Container{ VolumeMounts: []api.VolumeMount{ { MountPath: "/mnt/path", Name: "disk", ReadOnly: false, }, { MountPath: "/mnt/path3", Name: "disk", ReadOnly: true, }, { MountPath: "/mnt/path4", Name: "disk4", ReadOnly: false, }, { MountPath: "/mnt/path5", Name: "disk5", ReadOnly: false, }, }, } podVolumes := volumeMap{ "disk": &stubVolume{"/mnt/disk"}, "disk4": &stubVolume{"/mnt/host"}, "disk5": &stubVolume{"/var/lib/kubelet/podID/volumes/empty/disk5"}, } binds := makeBinds(&container, podVolumes) expectedBinds := []string{ "/mnt/disk:/mnt/path", "/mnt/disk:/mnt/path3:ro", "/mnt/host:/mnt/path4", "/var/lib/kubelet/podID/volumes/empty/disk5:/mnt/path5", } if len(binds) != len(expectedBinds) { t.Errorf("Unexpected binds: Expected %#v got %#v. Container was: %#v", expectedBinds, binds, container) } verifyStringArrayEquals(t, binds, expectedBinds) } type errorTestingDockerClient struct { dockertools.FakeDockerClient listContainersError error containerList []docker.APIContainers } func (f *errorTestingDockerClient) ListContainers(options docker.ListContainersOptions) ([]docker.APIContainers, error) { return f.containerList, f.listContainersError } func TestGetContainerInfo(t *testing.T) { containerID := "ab2cdf" containerPath := fmt.Sprintf("/docker/%v", containerID) containerInfo := cadvisorApi.ContainerInfo{ ContainerReference: cadvisorApi.ContainerReference{ Name: containerPath, }, } testKubelet := newTestKubelet(t) kubelet := testKubelet.kubelet fakeDocker := testKubelet.fakeDocker mockCadvisor := testKubelet.fakeCadvisor cadvisorReq := &cadvisorApi.ContainerInfoRequest{} mockCadvisor.On("DockerContainer", containerID, cadvisorReq).Return(containerInfo, nil) fakeDocker.ContainerList = []docker.APIContainers{ { ID: containerID, // pod id: qux // container id: foo Names: []string{"/k8s_foo_qux_ns_1234_42"}, }, } stats, err := kubelet.GetContainerInfo("qux_ns", "", "foo", cadvisorReq) if err != nil { t.Errorf("unexpected error: %v", err) } if stats == nil { t.Fatalf("stats should not be nil") } mockCadvisor.AssertExpectations(t) } func TestGetRootInfo(t *testing.T) { containerPath := "/" containerInfo := &cadvisorApi.ContainerInfo{ ContainerReference: cadvisorApi.ContainerReference{ Name: containerPath, }, } fakeDocker := dockertools.FakeDockerClient{} mockCadvisor := &cadvisor.Mock{} cadvisorReq := &cadvisorApi.ContainerInfoRequest{} mockCadvisor.On("ContainerInfo", containerPath, cadvisorReq).Return(containerInfo, nil) kubelet := Kubelet{ dockerClient: &fakeDocker, dockerPuller: &dockertools.FakeDockerPuller{}, cadvisor: mockCadvisor, } // If the container name is an empty string, then it means the root container. _, err := kubelet.GetRootInfo(cadvisorReq) if err != nil { t.Errorf("unexpected error: %v", err) } mockCadvisor.AssertExpectations(t) } func TestGetContainerInfoWhenCadvisorFailed(t *testing.T) { containerID := "ab2cdf" testKubelet := newTestKubelet(t) kubelet := testKubelet.kubelet fakeDocker := testKubelet.fakeDocker mockCadvisor := testKubelet.fakeCadvisor cadvisorApiFailure := fmt.Errorf("cAdvisor failure") containerInfo := cadvisorApi.ContainerInfo{} cadvisorReq := &cadvisorApi.ContainerInfoRequest{} mockCadvisor.On("DockerContainer", containerID, cadvisorReq).Return(containerInfo, cadvisorApiFailure) fakeDocker.ContainerList = []docker.APIContainers{ { ID: containerID, // pod id: qux // container id: foo Names: []string{"/k8s_foo_qux_ns_uuid_1234"}, }, } stats, err := kubelet.GetContainerInfo("qux_ns", "uuid", "foo", cadvisorReq) if stats != nil { t.Errorf("non-nil stats on error") } if err == nil { t.Errorf("expect error but received nil error") return } if err.Error() != cadvisorApiFailure.Error() { t.Errorf("wrong error message. expect %v, got %v", cadvisorApiFailure, err) } mockCadvisor.AssertExpectations(t) } func TestGetContainerInfoOnNonExistContainer(t *testing.T) { testKubelet := newTestKubelet(t) kubelet := testKubelet.kubelet fakeDocker := testKubelet.fakeDocker mockCadvisor := testKubelet.fakeCadvisor fakeDocker.ContainerList = []docker.APIContainers{} stats, _ := kubelet.GetContainerInfo("qux", "", "foo", nil) if stats != nil { t.Errorf("non-nil stats on non exist container") } mockCadvisor.AssertExpectations(t) } func TestGetContainerInfoWhenDockerToolsFailed(t *testing.T) { testKubelet := newTestKubelet(t) kubelet := testKubelet.kubelet mockCadvisor := testKubelet.fakeCadvisor expectedErr := fmt.Errorf("List containers error") kubelet.dockerClient = &errorTestingDockerClient{listContainersError: expectedErr} stats, err := kubelet.GetContainerInfo("qux", "", "foo", nil) if err == nil { t.Errorf("Expected error from dockertools, got none") } if err.Error() != expectedErr.Error() { t.Errorf("Expected error %v got %v", expectedErr.Error(), err.Error()) } if stats != nil { t.Errorf("non-nil stats when dockertools failed") } mockCadvisor.AssertExpectations(t) } func TestGetContainerInfoWithNoContainers(t *testing.T) { testKubelet := newTestKubelet(t) kubelet := testKubelet.kubelet mockCadvisor := testKubelet.fakeCadvisor kubelet.dockerClient = &errorTestingDockerClient{listContainersError: nil} stats, err := kubelet.GetContainerInfo("qux_ns", "", "foo", nil) if err == nil { t.Errorf("Expected error from cadvisor client, got none") } if err != ErrNoKubeletContainers { t.Errorf("Expected error %v, got %v", ErrNoKubeletContainers.Error(), err.Error()) } if stats != nil { t.Errorf("non-nil stats when dockertools returned no containers") } mockCadvisor.AssertExpectations(t) } func TestGetContainerInfoWithNoMatchingContainers(t *testing.T) { testKubelet := newTestKubelet(t) kubelet := testKubelet.kubelet mockCadvisor := testKubelet.fakeCadvisor containerList := []docker.APIContainers{ { ID: "fakeId", Names: []string{"/k8s_bar_qux_ns_1234_42"}, }, } kubelet.dockerClient = &errorTestingDockerClient{listContainersError: nil, containerList: containerList} stats, err := kubelet.GetContainerInfo("qux_ns", "", "foo", nil) if err == nil { t.Errorf("Expected error from cadvisor client, got none") } if err != ErrContainerNotFound { t.Errorf("Expected error %v, got %v", ErrContainerNotFound.Error(), err.Error()) } if stats != nil { t.Errorf("non-nil stats when dockertools returned no containers") } mockCadvisor.AssertExpectations(t) } type fakeContainerCommandRunner struct { Cmd []string ID string E error Stdin io.Reader Stdout io.WriteCloser Stderr io.WriteCloser TTY bool Port uint16 Stream io.ReadWriteCloser } func (f *fakeContainerCommandRunner) RunInContainer(id string, cmd []string) ([]byte, error) { f.Cmd = cmd f.ID = id return []byte{}, f.E } func (f *fakeContainerCommandRunner) GetDockerServerVersion() ([]uint, error) { return nil, nil } func (f *fakeContainerCommandRunner) ExecInContainer(id string, cmd []string, in io.Reader, out, err io.WriteCloser, tty bool) error { f.Cmd = cmd f.ID = id f.Stdin = in f.Stdout = out f.Stderr = err f.TTY = tty return f.E } func (f *fakeContainerCommandRunner) PortForward(pod *kubecontainer.Pod, port uint16, stream io.ReadWriteCloser) error { podInfraContainer := pod.FindContainerByName(dockertools.PodInfraContainerName) if podInfraContainer == nil { return fmt.Errorf("cannot find pod infra container in pod %q", kubecontainer.BuildPodFullName(pod.Name, pod.Namespace)) } f.ID = string(podInfraContainer.ID) f.Port = port f.Stream = stream return nil } func TestRunInContainerNoSuchPod(t *testing.T) { fakeCommandRunner := fakeContainerCommandRunner{} testKubelet := newTestKubelet(t) kubelet := testKubelet.kubelet fakeDocker := testKubelet.fakeDocker fakeDocker.ContainerList = []docker.APIContainers{} kubelet.runner = &fakeCommandRunner podName := "podFoo" podNamespace := "nsFoo" containerName := "containerFoo" output, err := kubelet.RunInContainer( kubecontainer.GetPodFullName(&api.Pod{ObjectMeta: api.ObjectMeta{Name: podName, Namespace: podNamespace}}), "", containerName, []string{"ls"}) if output != nil { t.Errorf("unexpected non-nil command: %v", output) } if err == nil { t.Error("unexpected non-error") } } func TestRunInContainer(t *testing.T) { fakeCommandRunner := fakeContainerCommandRunner{} testKubelet := newTestKubelet(t) kubelet := testKubelet.kubelet fakeDocker := testKubelet.fakeDocker kubelet.runner = &fakeCommandRunner containerID := "abc1234" podName := "podFoo" podNamespace := "nsFoo" containerName := "containerFoo" fakeDocker.ContainerList = []docker.APIContainers{ { ID: containerID, Names: []string{"/k8s_" + containerName + "_" + podName + "_" + podNamespace + "_12345678_42"}, }, } cmd := []string{"ls"} _, err := kubelet.RunInContainer( kubecontainer.GetPodFullName(&api.Pod{ ObjectMeta: api.ObjectMeta{ UID: "12345678", Name: podName, Namespace: podNamespace, }, }), "", containerName, cmd) if fakeCommandRunner.ID != containerID { t.Errorf("unexpected Name: %s", fakeCommandRunner.ID) } if !reflect.DeepEqual(fakeCommandRunner.Cmd, cmd) { t.Errorf("unexpected command: %s", fakeCommandRunner.Cmd) } if err != nil { t.Errorf("unexpected error: %v", err) } } func TestRunHandlerExec(t *testing.T) { fakeCommandRunner := fakeContainerCommandRunner{} testKubelet := newTestKubelet(t) kubelet := testKubelet.kubelet fakeDocker := testKubelet.fakeDocker kubelet.runner = &fakeCommandRunner containerID := "abc1234" podName := "podFoo" podNamespace := "nsFoo" containerName := "containerFoo" fakeDocker.ContainerList = []docker.APIContainers{ { ID: containerID, Names: []string{"/k8s_" + containerName + "_" + podName + "_" + podNamespace + "_12345678_42"}, }, } container := api.Container{ Name: containerName, Lifecycle: &api.Lifecycle{ PostStart: &api.Handler{ Exec: &api.ExecAction{ Command: []string{"ls", "-a"}, }, }, }, } err := kubelet.runHandler(podName+"_"+podNamespace, "", &container, container.Lifecycle.PostStart) if err != nil { t.Errorf("unexpected error: %v", err) } if fakeCommandRunner.ID != containerID || !reflect.DeepEqual(container.Lifecycle.PostStart.Exec.Command, fakeCommandRunner.Cmd) { t.Errorf("unexpected commands: %v", fakeCommandRunner) } } type fakeHTTP struct { url string err error } func (f *fakeHTTP) Get(url string) (*http.Response, error) { f.url = url return nil, f.err } func TestRunHandlerHttp(t *testing.T) { fakeHttp := fakeHTTP{} testKubelet := newTestKubelet(t) kubelet := testKubelet.kubelet kubelet.httpClient = &fakeHttp podName := "podFoo" podNamespace := "nsFoo" containerName := "containerFoo" container := api.Container{ Name: containerName, Lifecycle: &api.Lifecycle{ PostStart: &api.Handler{ HTTPGet: &api.HTTPGetAction{ Host: "foo", Port: util.IntOrString{IntVal: 8080, Kind: util.IntstrInt}, Path: "bar", }, }, }, } err := kubelet.runHandler(podName+"_"+podNamespace, "", &container, container.Lifecycle.PostStart) if err != nil { t.Errorf("unexpected error: %v", err) } if fakeHttp.url != "http://foo:8080/bar" { t.Errorf("unexpected url: %s", fakeHttp.url) } } func TestNewHandler(t *testing.T) { testKubelet := newTestKubelet(t) kubelet := testKubelet.kubelet handler := &api.Handler{ HTTPGet: &api.HTTPGetAction{ Host: "foo", Port: util.IntOrString{IntVal: 8080, Kind: util.IntstrInt}, Path: "bar", }, } actionHandler := kubelet.newActionHandler(handler) if actionHandler == nil { t.Error("unexpected nil action handler.") } handler = &api.Handler{ Exec: &api.ExecAction{ Command: []string{"ls", "-l"}, }, } actionHandler = kubelet.newActionHandler(handler) if actionHandler == nil { t.Error("unexpected nil action handler.") } handler = &api.Handler{} actionHandler = kubelet.newActionHandler(handler) if actionHandler != nil { t.Errorf("unexpected non-nil action handler: %v", actionHandler) } } func TestSyncPodEventHandlerFails(t *testing.T) { testKubelet := newTestKubelet(t) kubelet := testKubelet.kubelet fakeDocker := testKubelet.fakeDocker kubelet.httpClient = &fakeHTTP{ err: fmt.Errorf("test error"), } dockerContainers := dockertools.DockerContainers{ "9876": &docker.APIContainers{ // pod infra container Names: []string{"/k8s_POD_foo_new_12345678_42"}, ID: "9876", }, } bound := api.Pod{ ObjectMeta: api.ObjectMeta{ UID: "12345678", Name: "foo", Namespace: "new", }, Spec: api.PodSpec{ Containers: []api.Container{ {Name: "bar", Lifecycle: &api.Lifecycle{ PostStart: &api.Handler{ HTTPGet: &api.HTTPGetAction{ Host: "does.no.exist", Port: util.IntOrString{IntVal: 8080, Kind: util.IntstrInt}, Path: "bar", }, }, }, }, }, }, } pods := []api.Pod{bound} kubelet.podManager.SetPods(pods) err := kubelet.syncPod(&bound, nil, dockerContainersToPod(dockerContainers)) if err != nil { t.Errorf("unexpected error: %v", err) } verifyCalls(t, fakeDocker, []string{"list", "list", "create", "start", "stop", "list"}) if len(fakeDocker.Stopped) != 1 { t.Errorf("Wrong containers were stopped: %v", fakeDocker.Stopped) } } func TestSyncPodsWithPullPolicy(t *testing.T) { testKubelet := newTestKubelet(t) testKubelet.fakeCadvisor.On("MachineInfo").Return(&cadvisorApi.MachineInfo{}, nil) kubelet := testKubelet.kubelet fakeDocker := testKubelet.fakeDocker waitGroup := testKubelet.waitGroup puller := kubelet.dockerPuller.(*dockertools.FakeDockerPuller) puller.HasImages = []string{"existing_one", "want:latest"} kubelet.podInfraContainerImage = "custom_image_name" fakeDocker.ContainerList = []docker.APIContainers{} waitGroup.Add(1) err := kubelet.SyncPods([]api.Pod{ { ObjectMeta: api.ObjectMeta{ UID: "12345678", Name: "foo", Namespace: "new", }, Spec: api.PodSpec{ Containers: []api.Container{ {Name: "bar", Image: "pull_always_image", ImagePullPolicy: api.PullAlways}, {Name: "bar1", Image: "pull_never_image", ImagePullPolicy: api.PullNever}, {Name: "bar2", Image: "pull_if_not_present_image", ImagePullPolicy: api.PullIfNotPresent}, {Name: "bar3", Image: "existing_one", ImagePullPolicy: api.PullIfNotPresent}, {Name: "bar4", Image: "want:latest", ImagePullPolicy: api.PullIfNotPresent}, }, }, }, }, emptyPodUIDs, map[string]api.Pod{}, time.Now()) if err != nil { t.Errorf("unexpected error: %v", err) } waitGroup.Wait() fakeDocker.Lock() pulledImageSet := make(map[string]empty) for v := range puller.ImagesPulled { pulledImageSet[puller.ImagesPulled[v]] = empty{} } if !reflect.DeepEqual(pulledImageSet, map[string]empty{ "custom_image_name": {}, "pull_always_image": {}, "pull_if_not_present_image": {}, }) { t.Errorf("Unexpected pulled containers: %v", puller.ImagesPulled) } if len(fakeDocker.Created) != 6 { t.Errorf("Unexpected containers created %v", fakeDocker.Created) } fakeDocker.Unlock() } func TestParseResolvConf(t *testing.T) { testCases := []struct { data string nameservers []string searches []string }{ {"", []string{}, []string{}}, {" ", []string{}, []string{}}, {"\n", []string{}, []string{}}, {"\t\n\t", []string{}, []string{}}, {"#comment\n", []string{}, []string{}}, {" #comment\n", []string{}, []string{}}, {"#comment\n#comment", []string{}, []string{}}, {"#comment\nnameserver", []string{}, []string{}}, {"#comment\nnameserver\nsearch", []string{}, []string{}}, {"nameserver 1.2.3.4", []string{"1.2.3.4"}, []string{}}, {" nameserver 1.2.3.4", []string{"1.2.3.4"}, []string{}}, {"\tnameserver 1.2.3.4", []string{"1.2.3.4"}, []string{}}, {"nameserver\t1.2.3.4", []string{"1.2.3.4"}, []string{}}, {"nameserver \t 1.2.3.4", []string{"1.2.3.4"}, []string{}}, {"nameserver 1.2.3.4\nnameserver 5.6.7.8", []string{"1.2.3.4", "5.6.7.8"}, []string{}}, {"search foo", []string{}, []string{"foo"}}, {"search foo bar", []string{}, []string{"foo", "bar"}}, {"search foo bar bat\n", []string{}, []string{"foo", "bar", "bat"}}, {"search foo\nsearch bar", []string{}, []string{"bar"}}, {"nameserver 1.2.3.4\nsearch foo bar", []string{"1.2.3.4"}, []string{"foo", "bar"}}, {"nameserver 1.2.3.4\nsearch foo\nnameserver 5.6.7.8\nsearch bar", []string{"1.2.3.4", "5.6.7.8"}, []string{"bar"}}, {"#comment\nnameserver 1.2.3.4\n#comment\nsearch foo\ncomment", []string{"1.2.3.4"}, []string{"foo"}}, } for i, tc := range testCases { ns, srch, err := parseResolvConf(strings.NewReader(tc.data)) if err != nil { t.Errorf("expected success, got %v", err) continue } if !reflect.DeepEqual(ns, tc.nameservers) { t.Errorf("[%d] expected nameservers %#v, got %#v", i, tc.nameservers, ns) } if !reflect.DeepEqual(srch, tc.searches) { t.Errorf("[%d] expected searches %#v, got %#v", i, tc.searches, srch) } } } type testServiceLister struct { services []api.Service } func (ls testServiceLister) List() (api.ServiceList, error) { return api.ServiceList{ Items: ls.services, }, nil } type testNodeLister struct { nodes []api.Node } func (ls testNodeLister) GetNodeInfo(id string) (*api.Node, error) { return nil, errors.New("not implemented") } func (ls testNodeLister) List() (api.NodeList, error) { return api.NodeList{ Items: ls.nodes, }, nil } func TestMakeEnvironmentVariables(t *testing.T) { services := []api.Service{ { ObjectMeta: api.ObjectMeta{Name: "kubernetes", Namespace: api.NamespaceDefault}, Spec: api.ServiceSpec{ Ports: []api.ServicePort{{ Protocol: "TCP", Port: 8081, }}, PortalIP: "1.2.3.1", }, }, { ObjectMeta: api.ObjectMeta{Name: "kubernetes-ro", Namespace: api.NamespaceDefault}, Spec: api.ServiceSpec{ Ports: []api.ServicePort{{ Protocol: "TCP", Port: 8082, }}, PortalIP: "1.2.3.2", }, }, { ObjectMeta: api.ObjectMeta{Name: "kubernetes-ro", Namespace: api.NamespaceDefault}, Spec: api.ServiceSpec{ Ports: []api.ServicePort{{ Protocol: "TCP", Port: 8082, }}, PortalIP: "None", }, }, { ObjectMeta: api.ObjectMeta{Name: "kubernetes-ro", Namespace: api.NamespaceDefault}, Spec: api.ServiceSpec{ Ports: []api.ServicePort{{ Protocol: "TCP", Port: 8082, }}, PortalIP: "", }, }, { ObjectMeta: api.ObjectMeta{Name: "test", Namespace: "test1"}, Spec: api.ServiceSpec{ Ports: []api.ServicePort{{ Protocol: "TCP", Port: 8083, }}, PortalIP: "1.2.3.3", }, }, { ObjectMeta: api.ObjectMeta{Name: "kubernetes", Namespace: "test2"}, Spec: api.ServiceSpec{ Ports: []api.ServicePort{{ Protocol: "TCP", Port: 8084, }}, PortalIP: "1.2.3.4", }, }, { ObjectMeta: api.ObjectMeta{Name: "test", Namespace: "test2"}, Spec: api.ServiceSpec{ Ports: []api.ServicePort{{ Protocol: "TCP", Port: 8085, }}, PortalIP: "1.2.3.5", }, }, { ObjectMeta: api.ObjectMeta{Name: "test", Namespace: "test2"}, Spec: api.ServiceSpec{ Ports: []api.ServicePort{{ Protocol: "TCP", Port: 8085, }}, PortalIP: "None", }, }, { ObjectMeta: api.ObjectMeta{Name: "test", Namespace: "test2"}, Spec: api.ServiceSpec{ Ports: []api.ServicePort{{ Protocol: "TCP", Port: 8085, }}, }, }, { ObjectMeta: api.ObjectMeta{Name: "kubernetes", Namespace: "kubernetes"}, Spec: api.ServiceSpec{ Ports: []api.ServicePort{{ Protocol: "TCP", Port: 8086, }}, PortalIP: "1.2.3.6", }, }, { ObjectMeta: api.ObjectMeta{Name: "kubernetes-ro", Namespace: "kubernetes"}, Spec: api.ServiceSpec{ Ports: []api.ServicePort{{ Protocol: "TCP", Port: 8087, }}, PortalIP: "1.2.3.7", }, }, { ObjectMeta: api.ObjectMeta{Name: "not-special", Namespace: "kubernetes"}, Spec: api.ServiceSpec{ Ports: []api.ServicePort{{ Protocol: "TCP", Port: 8088, }}, PortalIP: "1.2.3.8", }, }, { ObjectMeta: api.ObjectMeta{Name: "not-special", Namespace: "kubernetes"}, Spec: api.ServiceSpec{ Ports: []api.ServicePort{{ Protocol: "TCP", Port: 8088, }}, PortalIP: "None", }, }, { ObjectMeta: api.ObjectMeta{Name: "not-special", Namespace: "kubernetes"}, Spec: api.ServiceSpec{ Ports: []api.ServicePort{{ Protocol: "TCP", Port: 8088, }}, PortalIP: "", }, }, } testCases := []struct { name string // the name of the test case ns string // the namespace to generate environment for container *api.Container // the container to use masterServiceNamespace string // the namespace to read master service info from nilLister bool // whether the lister should be nil expectedEnvs util.StringSet // a set of expected environment vars expectedEnvSize int // total number of expected env vars }{ { "api server = Y, kubelet = Y", "test1", &api.Container{ Env: []api.EnvVar{ {Name: "FOO", Value: "BAR"}, {Name: "TEST_SERVICE_HOST", Value: "1.2.3.3"}, {Name: "TEST_SERVICE_PORT", Value: "8083"}, {Name: "TEST_PORT", Value: "tcp://1.2.3.3:8083"}, {Name: "TEST_PORT_8083_TCP", Value: "tcp://1.2.3.3:8083"}, {Name: "TEST_PORT_8083_TCP_PROTO", Value: "tcp"}, {Name: "TEST_PORT_8083_TCP_PORT", Value: "8083"}, {Name: "TEST_PORT_8083_TCP_ADDR", Value: "1.2.3.3"}, }, }, api.NamespaceDefault, false, util.NewStringSet("FOO=BAR", "TEST_SERVICE_HOST=1.2.3.3", "TEST_SERVICE_PORT=8083", "TEST_PORT=tcp://1.2.3.3:8083", "TEST_PORT_8083_TCP=tcp://1.2.3.3:8083", "TEST_PORT_8083_TCP_PROTO=tcp", "TEST_PORT_8083_TCP_PORT=8083", "TEST_PORT_8083_TCP_ADDR=1.2.3.3", "KUBERNETES_SERVICE_HOST=1.2.3.1", "KUBERNETES_SERVICE_PORT=8081", "KUBERNETES_PORT=tcp://1.2.3.1:8081", "KUBERNETES_PORT_8081_TCP=tcp://1.2.3.1:8081", "KUBERNETES_PORT_8081_TCP_PROTO=tcp", "KUBERNETES_PORT_8081_TCP_PORT=8081", "KUBERNETES_PORT_8081_TCP_ADDR=1.2.3.1", "KUBERNETES_RO_SERVICE_HOST=1.2.3.2", "KUBERNETES_RO_SERVICE_PORT=8082", "KUBERNETES_RO_PORT=tcp://1.2.3.2:8082", "KUBERNETES_RO_PORT_8082_TCP=tcp://1.2.3.2:8082", "KUBERNETES_RO_PORT_8082_TCP_PROTO=tcp", "KUBERNETES_RO_PORT_8082_TCP_PORT=8082", "KUBERNETES_RO_PORT_8082_TCP_ADDR=1.2.3.2"), 22, }, { "api server = Y, kubelet = N", "test1", &api.Container{ Env: []api.EnvVar{ {Name: "FOO", Value: "BAR"}, {Name: "TEST_SERVICE_HOST", Value: "1.2.3.3"}, {Name: "TEST_SERVICE_PORT", Value: "8083"}, {Name: "TEST_PORT", Value: "tcp://1.2.3.3:8083"}, {Name: "TEST_PORT_8083_TCP", Value: "tcp://1.2.3.3:8083"}, {Name: "TEST_PORT_8083_TCP_PROTO", Value: "tcp"}, {Name: "TEST_PORT_8083_TCP_PORT", Value: "8083"}, {Name: "TEST_PORT_8083_TCP_ADDR", Value: "1.2.3.3"}, }, }, api.NamespaceDefault, true, util.NewStringSet("FOO=BAR", "TEST_SERVICE_HOST=1.2.3.3", "TEST_SERVICE_PORT=8083", "TEST_PORT=tcp://1.2.3.3:8083", "TEST_PORT_8083_TCP=tcp://1.2.3.3:8083", "TEST_PORT_8083_TCP_PROTO=tcp", "TEST_PORT_8083_TCP_PORT=8083", "TEST_PORT_8083_TCP_ADDR=1.2.3.3"), 8, }, { "api server = N; kubelet = Y", "test1", &api.Container{ Env: []api.EnvVar{ {Name: "FOO", Value: "BAZ"}, }, }, api.NamespaceDefault, false, util.NewStringSet("FOO=BAZ", "TEST_SERVICE_HOST=1.2.3.3", "TEST_SERVICE_PORT=8083", "TEST_PORT=tcp://1.2.3.3:8083", "TEST_PORT_8083_TCP=tcp://1.2.3.3:8083", "TEST_PORT_8083_TCP_PROTO=tcp", "TEST_PORT_8083_TCP_PORT=8083", "TEST_PORT_8083_TCP_ADDR=1.2.3.3", "KUBERNETES_SERVICE_HOST=1.2.3.1", "KUBERNETES_SERVICE_PORT=8081", "KUBERNETES_PORT=tcp://1.2.3.1:8081", "KUBERNETES_PORT_8081_TCP=tcp://1.2.3.1:8081", "KUBERNETES_PORT_8081_TCP_PROTO=tcp", "KUBERNETES_PORT_8081_TCP_PORT=8081", "KUBERNETES_PORT_8081_TCP_ADDR=1.2.3.1", "KUBERNETES_RO_SERVICE_HOST=1.2.3.2", "KUBERNETES_RO_SERVICE_PORT=8082", "KUBERNETES_RO_PORT=tcp://1.2.3.2:8082", "KUBERNETES_RO_PORT_8082_TCP=tcp://1.2.3.2:8082", "KUBERNETES_RO_PORT_8082_TCP_PROTO=tcp", "KUBERNETES_RO_PORT_8082_TCP_PORT=8082", "KUBERNETES_RO_PORT_8082_TCP_ADDR=1.2.3.2"), 22, }, { "master service in pod ns", "test2", &api.Container{ Env: []api.EnvVar{ {Name: "FOO", Value: "ZAP"}, }, }, "kubernetes", false, util.NewStringSet("FOO=ZAP", "TEST_SERVICE_HOST=1.2.3.5", "TEST_SERVICE_PORT=8085", "TEST_PORT=tcp://1.2.3.5:8085", "TEST_PORT_8085_TCP=tcp://1.2.3.5:8085", "TEST_PORT_8085_TCP_PROTO=tcp", "TEST_PORT_8085_TCP_PORT=8085", "TEST_PORT_8085_TCP_ADDR=1.2.3.5", "KUBERNETES_SERVICE_HOST=1.2.3.4", "KUBERNETES_SERVICE_PORT=8084", "KUBERNETES_PORT=tcp://1.2.3.4:8084", "KUBERNETES_PORT_8084_TCP=tcp://1.2.3.4:8084", "KUBERNETES_PORT_8084_TCP_PROTO=tcp", "KUBERNETES_PORT_8084_TCP_PORT=8084", "KUBERNETES_PORT_8084_TCP_ADDR=1.2.3.4", "KUBERNETES_RO_SERVICE_HOST=1.2.3.7", "KUBERNETES_RO_SERVICE_PORT=8087", "KUBERNETES_RO_PORT=tcp://1.2.3.7:8087", "KUBERNETES_RO_PORT_8087_TCP=tcp://1.2.3.7:8087", "KUBERNETES_RO_PORT_8087_TCP_PROTO=tcp", "KUBERNETES_RO_PORT_8087_TCP_PORT=8087", "KUBERNETES_RO_PORT_8087_TCP_ADDR=1.2.3.7"), 22, }, { "pod in master service ns", "kubernetes", &api.Container{}, "kubernetes", false, util.NewStringSet( "NOT_SPECIAL_SERVICE_HOST=1.2.3.8", "NOT_SPECIAL_SERVICE_PORT=8088", "NOT_SPECIAL_PORT=tcp://1.2.3.8:8088", "NOT_SPECIAL_PORT_8088_TCP=tcp://1.2.3.8:8088", "NOT_SPECIAL_PORT_8088_TCP_PROTO=tcp", "NOT_SPECIAL_PORT_8088_TCP_PORT=8088", "NOT_SPECIAL_PORT_8088_TCP_ADDR=1.2.3.8", "KUBERNETES_SERVICE_HOST=1.2.3.6", "KUBERNETES_SERVICE_PORT=8086", "KUBERNETES_PORT=tcp://1.2.3.6:8086", "KUBERNETES_PORT_8086_TCP=tcp://1.2.3.6:8086", "KUBERNETES_PORT_8086_TCP_PROTO=tcp", "KUBERNETES_PORT_8086_TCP_PORT=8086", "KUBERNETES_PORT_8086_TCP_ADDR=1.2.3.6", "KUBERNETES_RO_SERVICE_HOST=1.2.3.7", "KUBERNETES_RO_SERVICE_PORT=8087", "KUBERNETES_RO_PORT=tcp://1.2.3.7:8087", "KUBERNETES_RO_PORT_8087_TCP=tcp://1.2.3.7:8087", "KUBERNETES_RO_PORT_8087_TCP_PROTO=tcp", "KUBERNETES_RO_PORT_8087_TCP_PORT=8087", "KUBERNETES_RO_PORT_8087_TCP_ADDR=1.2.3.7"), 21, }, } for _, tc := range testCases { testKubelet := newTestKubelet(t) kl := testKubelet.kubelet kl.masterServiceNamespace = tc.masterServiceNamespace if tc.nilLister { kl.serviceLister = nil } else { kl.serviceLister = testServiceLister{services} } result, err := kl.makeEnvironmentVariables(tc.ns, tc.container) if err != nil { t.Errorf("[%v] Unexpected error: %v", tc.name, err) } resultSet := util.NewStringSet(result...) if !resultSet.IsSuperset(tc.expectedEnvs) { t.Errorf("[%v] Unexpected env entries; expected {%v}, got {%v}", tc.name, tc.expectedEnvs, resultSet) } if a := len(resultSet); a != tc.expectedEnvSize { t.Errorf("[%v] Unexpected number of env vars; expected %v, got %v", tc.name, tc.expectedEnvSize, a) } } } func runningState(cName string) api.ContainerStatus { return api.ContainerStatus{ Name: cName, State: api.ContainerState{ Running: &api.ContainerStateRunning{}, }, } } func stoppedState(cName string) api.ContainerStatus { return api.ContainerStatus{ Name: cName, State: api.ContainerState{ Termination: &api.ContainerStateTerminated{}, }, } } func succeededState(cName string) api.ContainerStatus { return api.ContainerStatus{ Name: cName, State: api.ContainerState{ Termination: &api.ContainerStateTerminated{ ExitCode: 0, }, }, } } func failedState(cName string) api.ContainerStatus { return api.ContainerStatus{ Name: cName, State: api.ContainerState{ Termination: &api.ContainerStateTerminated{ ExitCode: -1, }, }, } } func TestPodPhaseWithRestartAlways(t *testing.T) { desiredState := api.PodSpec{ Host: "machine", Containers: []api.Container{ {Name: "containerA"}, {Name: "containerB"}, }, RestartPolicy: api.RestartPolicyAlways, } tests := []struct { pod *api.Pod status api.PodPhase test string }{ {&api.Pod{Spec: desiredState, Status: api.PodStatus{}}, api.PodPending, "waiting"}, { &api.Pod{ Spec: desiredState, Status: api.PodStatus{ ContainerStatuses: []api.ContainerStatus{ runningState("containerA"), runningState("containerB"), }, }, }, api.PodRunning, "all running", }, { &api.Pod{ Spec: desiredState, Status: api.PodStatus{ ContainerStatuses: []api.ContainerStatus{ stoppedState("containerA"), stoppedState("containerB"), }, }, }, api.PodRunning, "all stopped with restart always", }, { &api.Pod{ Spec: desiredState, Status: api.PodStatus{ ContainerStatuses: []api.ContainerStatus{ runningState("containerA"), stoppedState("containerB"), }, }, }, api.PodRunning, "mixed state #1 with restart always", }, { &api.Pod{ Spec: desiredState, Status: api.PodStatus{ ContainerStatuses: []api.ContainerStatus{ runningState("containerA"), }, }, }, api.PodPending, "mixed state #2 with restart always", }, } for _, test := range tests { if status := getPhase(&test.pod.Spec, test.pod.Status.ContainerStatuses); status != test.status { t.Errorf("In test %s, expected %v, got %v", test.test, test.status, status) } } } func TestPodPhaseWithRestartNever(t *testing.T) { desiredState := api.PodSpec{ Host: "machine", Containers: []api.Container{ {Name: "containerA"}, {Name: "containerB"}, }, RestartPolicy: api.RestartPolicyNever, } tests := []struct { pod *api.Pod status api.PodPhase test string }{ {&api.Pod{Spec: desiredState, Status: api.PodStatus{}}, api.PodPending, "waiting"}, { &api.Pod{ Spec: desiredState, Status: api.PodStatus{ ContainerStatuses: []api.ContainerStatus{ runningState("containerA"), runningState("containerB"), }, }, }, api.PodRunning, "all running with restart never", }, { &api.Pod{ Spec: desiredState, Status: api.PodStatus{ ContainerStatuses: []api.ContainerStatus{ succeededState("containerA"), succeededState("containerB"), }, }, }, api.PodSucceeded, "all succeeded with restart never", }, { &api.Pod{ Spec: desiredState, Status: api.PodStatus{ ContainerStatuses: []api.ContainerStatus{ failedState("containerA"), failedState("containerB"), }, }, }, api.PodFailed, "all failed with restart never", }, { &api.Pod{ Spec: desiredState, Status: api.PodStatus{ ContainerStatuses: []api.ContainerStatus{ runningState("containerA"), succeededState("containerB"), }, }, }, api.PodRunning, "mixed state #1 with restart never", }, { &api.Pod{ Spec: desiredState, Status: api.PodStatus{ ContainerStatuses: []api.ContainerStatus{ runningState("containerA"), }, }, }, api.PodPending, "mixed state #2 with restart never", }, } for _, test := range tests { if status := getPhase(&test.pod.Spec, test.pod.Status.ContainerStatuses); status != test.status { t.Errorf("In test %s, expected %v, got %v", test.test, test.status, status) } } } func TestPodPhaseWithRestartOnFailure(t *testing.T) { desiredState := api.PodSpec{ Host: "machine", Containers: []api.Container{ {Name: "containerA"}, {Name: "containerB"}, }, RestartPolicy: api.RestartPolicyOnFailure, } tests := []struct { pod *api.Pod status api.PodPhase test string }{ {&api.Pod{Spec: desiredState, Status: api.PodStatus{}}, api.PodPending, "waiting"}, { &api.Pod{ Spec: desiredState, Status: api.PodStatus{ ContainerStatuses: []api.ContainerStatus{ runningState("containerA"), runningState("containerB"), }, }, }, api.PodRunning, "all running with restart onfailure", }, { &api.Pod{ Spec: desiredState, Status: api.PodStatus{ ContainerStatuses: []api.ContainerStatus{ succeededState("containerA"), succeededState("containerB"), }, }, }, api.PodSucceeded, "all succeeded with restart onfailure", }, { &api.Pod{ Spec: desiredState, Status: api.PodStatus{ ContainerStatuses: []api.ContainerStatus{ failedState("containerA"), failedState("containerB"), }, }, }, api.PodRunning, "all failed with restart never", }, { &api.Pod{ Spec: desiredState, Status: api.PodStatus{ ContainerStatuses: []api.ContainerStatus{ runningState("containerA"), succeededState("containerB"), }, }, }, api.PodRunning, "mixed state #1 with restart onfailure", }, { &api.Pod{ Spec: desiredState, Status: api.PodStatus{ ContainerStatuses: []api.ContainerStatus{ runningState("containerA"), }, }, }, api.PodPending, "mixed state #2 with restart onfailure", }, } for _, test := range tests { if status := getPhase(&test.pod.Spec, test.pod.Status.ContainerStatuses); status != test.status { t.Errorf("In test %s, expected %v, got %v", test.test, test.status, status) } } } func getReadyStatus(cName string) api.ContainerStatus { return api.ContainerStatus{ Name: cName, Ready: true, } } func getNotReadyStatus(cName string) api.ContainerStatus { return api.ContainerStatus{ Name: cName, Ready: false, } } func TestGetPodReadyCondition(t *testing.T) { ready := []api.PodCondition{{ Type: api.PodReady, Status: api.ConditionTrue, }} unready := []api.PodCondition{{ Type: api.PodReady, Status: api.ConditionFalse, }} tests := []struct { spec *api.PodSpec info []api.ContainerStatus expected []api.PodCondition }{ { spec: nil, info: nil, expected: unready, }, { spec: &api.PodSpec{}, info: []api.ContainerStatus{}, expected: ready, }, { spec: &api.PodSpec{ Containers: []api.Container{ {Name: "1234"}, }, }, info: []api.ContainerStatus{}, expected: unready, }, { spec: &api.PodSpec{ Containers: []api.Container{ {Name: "1234"}, }, }, info: []api.ContainerStatus{ getReadyStatus("1234"), }, expected: ready, }, { spec: &api.PodSpec{ Containers: []api.Container{ {Name: "1234"}, {Name: "5678"}, }, }, info: []api.ContainerStatus{ getReadyStatus("1234"), getReadyStatus("5678"), }, expected: ready, }, { spec: &api.PodSpec{ Containers: []api.Container{ {Name: "1234"}, {Name: "5678"}, }, }, info: []api.ContainerStatus{ getReadyStatus("1234"), }, expected: unready, }, { spec: &api.PodSpec{ Containers: []api.Container{ {Name: "1234"}, {Name: "5678"}, }, }, info: []api.ContainerStatus{ getReadyStatus("1234"), getNotReadyStatus("5678"), }, expected: unready, }, } for i, test := range tests { condition := getPodReadyCondition(test.spec, test.info) if !reflect.DeepEqual(condition, test.expected) { t.Errorf("On test case %v, expected:\n%+v\ngot\n%+v\n", i, test.expected, condition) } } } func TestExecInContainerNoSuchPod(t *testing.T) { fakeCommandRunner := fakeContainerCommandRunner{} testKubelet := newTestKubelet(t) kubelet := testKubelet.kubelet fakeDocker := testKubelet.fakeDocker fakeDocker.ContainerList = []docker.APIContainers{} kubelet.runner = &fakeCommandRunner podName := "podFoo" podNamespace := "nsFoo" containerName := "containerFoo" err := kubelet.ExecInContainer( kubecontainer.GetPodFullName(&api.Pod{ObjectMeta: api.ObjectMeta{Name: podName, Namespace: podNamespace}}), "", containerName, []string{"ls"}, nil, nil, nil, false, ) if err == nil { t.Fatal("unexpected non-error") } if fakeCommandRunner.ID != "" { t.Fatal("unexpected invocation of runner.ExecInContainer") } } func TestExecInContainerNoSuchContainer(t *testing.T) { fakeCommandRunner := fakeContainerCommandRunner{} testKubelet := newTestKubelet(t) kubelet := testKubelet.kubelet fakeDocker := testKubelet.fakeDocker kubelet.runner = &fakeCommandRunner podName := "podFoo" podNamespace := "nsFoo" containerID := "containerFoo" fakeDocker.ContainerList = []docker.APIContainers{ { ID: "notfound", Names: []string{"/k8s_notfound_" + podName + "_" + podNamespace + "_12345678_42"}, }, } err := kubelet.ExecInContainer( kubecontainer.GetPodFullName(&api.Pod{ObjectMeta: api.ObjectMeta{ UID: "12345678", Name: podName, Namespace: podNamespace, }}), "", containerID, []string{"ls"}, nil, nil, nil, false, ) if err == nil { t.Fatal("unexpected non-error") } if fakeCommandRunner.ID != "" { t.Fatal("unexpected invocation of runner.ExecInContainer") } } type fakeReadWriteCloser struct{} func (f *fakeReadWriteCloser) Write(data []byte) (int, error) { return 0, nil } func (f *fakeReadWriteCloser) Read(data []byte) (int, error) { return 0, nil } func (f *fakeReadWriteCloser) Close() error { return nil } func TestExecInContainer(t *testing.T) { fakeCommandRunner := fakeContainerCommandRunner{} testKubelet := newTestKubelet(t) kubelet := testKubelet.kubelet fakeDocker := testKubelet.fakeDocker kubelet.runner = &fakeCommandRunner podName := "podFoo" podNamespace := "nsFoo" containerID := "containerFoo" command := []string{"ls"} stdin := &bytes.Buffer{} stdout := &fakeReadWriteCloser{} stderr := &fakeReadWriteCloser{} tty := true fakeDocker.ContainerList = []docker.APIContainers{ { ID: containerID, Names: []string{"/k8s_" + containerID + "_" + podName + "_" + podNamespace + "_12345678_42"}, }, } err := kubelet.ExecInContainer( kubecontainer.GetPodFullName(&api.Pod{ObjectMeta: api.ObjectMeta{ UID: "12345678", Name: podName, Namespace: podNamespace, }}), "", containerID, []string{"ls"}, stdin, stdout, stderr, tty, ) if err != nil { t.Fatalf("unexpected error: %s", err) } if e, a := containerID, fakeCommandRunner.ID; e != a { t.Fatalf("container id: expected %s, got %s", e, a) } if e, a := command, fakeCommandRunner.Cmd; !reflect.DeepEqual(e, a) { t.Fatalf("command: expected '%v', got '%v'", e, a) } if e, a := stdin, fakeCommandRunner.Stdin; e != a { t.Fatalf("stdin: expected %#v, got %#v", e, a) } if e, a := stdout, fakeCommandRunner.Stdout; e != a { t.Fatalf("stdout: expected %#v, got %#v", e, a) } if e, a := stderr, fakeCommandRunner.Stderr; e != a { t.Fatalf("stderr: expected %#v, got %#v", e, a) } if e, a := tty, fakeCommandRunner.TTY; e != a { t.Fatalf("tty: expected %t, got %t", e, a) } } func TestPortForwardNoSuchPod(t *testing.T) { fakeCommandRunner := fakeContainerCommandRunner{} testKubelet := newTestKubelet(t) kubelet := testKubelet.kubelet fakeDocker := testKubelet.fakeDocker fakeDocker.ContainerList = []docker.APIContainers{} kubelet.runner = &fakeCommandRunner podName := "podFoo" podNamespace := "nsFoo" var port uint16 = 5000 err := kubelet.PortForward( kubecontainer.GetPodFullName(&api.Pod{ObjectMeta: api.ObjectMeta{Name: podName, Namespace: podNamespace}}), "", port, nil, ) if err == nil { t.Fatal("unexpected non-error") } if fakeCommandRunner.ID != "" { t.Fatal("unexpected invocation of runner.PortForward") } } func TestPortForwardNoSuchContainer(t *testing.T) { fakeCommandRunner := fakeContainerCommandRunner{} testKubelet := newTestKubelet(t) kubelet := testKubelet.kubelet fakeDocker := testKubelet.fakeDocker kubelet.runner = &fakeCommandRunner podName := "podFoo" podNamespace := "nsFoo" var port uint16 = 5000 fakeDocker.ContainerList = []docker.APIContainers{ { ID: "notfound", Names: []string{"/k8s_notfound_" + podName + "_" + podNamespace + "_12345678_42"}, }, } err := kubelet.PortForward( kubecontainer.GetPodFullName(&api.Pod{ObjectMeta: api.ObjectMeta{ UID: "12345678", Name: podName, Namespace: podNamespace, }}), "", port, nil, ) if err == nil { t.Fatal("unexpected non-error") } if fakeCommandRunner.ID != "" { t.Fatal("unexpected invocation of runner.PortForward") } } func TestPortForward(t *testing.T) { fakeCommandRunner := fakeContainerCommandRunner{} testKubelet := newTestKubelet(t) kubelet := testKubelet.kubelet fakeDocker := testKubelet.fakeDocker kubelet.runner = &fakeCommandRunner podName := "podFoo" podNamespace := "nsFoo" containerID := "containerFoo" var port uint16 = 5000 stream := &fakeReadWriteCloser{} infraContainerID := "infra" kubelet.podInfraContainerImage = "POD" fakeDocker.ContainerList = []docker.APIContainers{ { ID: infraContainerID, Names: []string{"/k8s_" + kubelet.podInfraContainerImage + "_" + podName + "_" + podNamespace + "_12345678_42"}, }, { ID: containerID, Names: []string{"/k8s_" + containerID + "_" + podName + "_" + podNamespace + "_12345678_42"}, }, } err := kubelet.PortForward( kubecontainer.GetPodFullName(&api.Pod{ObjectMeta: api.ObjectMeta{ UID: "12345678", Name: podName, Namespace: podNamespace, }}), "", port, stream, ) if err != nil { t.Fatalf("unexpected error: %s", err) } if e, a := infraContainerID, fakeCommandRunner.ID; e != a { t.Fatalf("container id: expected %s, got %s", e, a) } if e, a := port, fakeCommandRunner.Port; e != a { t.Fatalf("port: expected %v, got %v", e, a) } if e, a := stream, fakeCommandRunner.Stream; e != a { t.Fatalf("stream: expected %v, got %v", e, a) } } // Tests that identify the host port conflicts are detected correctly. func TestGetHostPortConflicts(t *testing.T) { pods := []api.Pod{ {Spec: api.PodSpec{Containers: []api.Container{{Ports: []api.ContainerPort{{HostPort: 80}}}}}}, {Spec: api.PodSpec{Containers: []api.Container{{Ports: []api.ContainerPort{{HostPort: 81}}}}}}, {Spec: api.PodSpec{Containers: []api.Container{{Ports: []api.ContainerPort{{HostPort: 82}}}}}}, {Spec: api.PodSpec{Containers: []api.Container{{Ports: []api.ContainerPort{{HostPort: 83}}}}}}, } // Pods should not cause any conflict. _, conflicts := checkHostPortConflicts(pods) if len(conflicts) != 0 { t.Errorf("expected no conflicts, Got %#v", conflicts) } // The new pod should cause conflict and be reported. expected := api.Pod{ Spec: api.PodSpec{Containers: []api.Container{{Ports: []api.ContainerPort{{HostPort: 81}}}}}, } pods = append(pods, expected) if _, actual := checkHostPortConflicts(pods); !reflect.DeepEqual(actual, []api.Pod{expected}) { t.Errorf("expected %#v, Got %#v", expected, actual) } } // Tests that we handle port conflicts correctly by setting the failed status in status map. func TestHandlePortConflicts(t *testing.T) { testKubelet := newTestKubelet(t) kl := testKubelet.kubelet testKubelet.fakeCadvisor.On("MachineInfo").Return(&cadvisorApi.MachineInfo{}, nil) spec := api.PodSpec{Containers: []api.Container{{Ports: []api.ContainerPort{{HostPort: 80}}}}} pods := []api.Pod{ { ObjectMeta: api.ObjectMeta{ UID: "123456789", Name: "newpod", Namespace: "foo", }, Spec: spec, }, { ObjectMeta: api.ObjectMeta{ UID: "987654321", Name: "oldpod", Namespace: "foo", }, Spec: spec, }, } // Make sure the Pods are in the reverse order of creation time. pods[1].CreationTimestamp = util.NewTime(time.Now()) pods[0].CreationTimestamp = util.NewTime(time.Now().Add(1 * time.Second)) // The newer pod should be rejected. conflictedPodName := kubecontainer.GetPodFullName(&pods[0]) kl.handleNotFittingPods(pods) // Check pod status stored in the status map. status, err := kl.GetPodStatus(conflictedPodName) if err != nil { t.Fatalf("status of pod %q is not found in the status map: %#v", conflictedPodName, err) } if status.Phase != api.PodFailed { t.Fatalf("expected pod status %q. Got %q.", api.PodFailed, status.Phase) } // Check if we can retrieve the pod status from GetPodStatus(). kl.podManager.SetPods(pods) status, err = kl.GetPodStatus(conflictedPodName) if err != nil { t.Fatalf("unable to retrieve pod status for pod %q: %#v.", conflictedPodName, err) } if status.Phase != api.PodFailed { t.Fatalf("expected pod status %q. Got %q.", api.PodFailed, status.Phase) } } // Tests that we handle not matching labels selector correctly by setting the failed status in status map. func TestHandleNodeSelector(t *testing.T) { testKubelet := newTestKubelet(t) kl := testKubelet.kubelet kl.nodeLister = testNodeLister{nodes: []api.Node{ {ObjectMeta: api.ObjectMeta{Name: "testnode", Labels: map[string]string{"key": "B"}}}, }} testKubelet.fakeCadvisor.On("MachineInfo").Return(&cadvisorApi.MachineInfo{}, nil) pods := []api.Pod{ { ObjectMeta: api.ObjectMeta{ UID: "123456789", Name: "podA", Namespace: "foo", }, Spec: api.PodSpec{NodeSelector: map[string]string{"key": "A"}}, }, { ObjectMeta: api.ObjectMeta{ UID: "987654321", Name: "podB", Namespace: "foo", }, Spec: api.PodSpec{NodeSelector: map[string]string{"key": "B"}}, }, } // The first pod should be rejected. notfittingPodName := kubecontainer.GetPodFullName(&pods[0]) kl.handleNotFittingPods(pods) // Check pod status stored in the status map. status, err := kl.GetPodStatus(notfittingPodName) if err != nil { t.Fatalf("status of pod %q is not found in the status map: %#v", notfittingPodName, err) } if status.Phase != api.PodFailed { t.Fatalf("expected pod status %q. Got %q.", api.PodFailed, status.Phase) } // Check if we can retrieve the pod status from GetPodStatus(). kl.podManager.SetPods(pods) status, err = kl.GetPodStatus(notfittingPodName) if err != nil { t.Fatalf("unable to retrieve pod status for pod %q: %#v.", notfittingPodName, err) } if status.Phase != api.PodFailed { t.Fatalf("expected pod status %q. Got %q.", api.PodFailed, status.Phase) } } // Tests that we handle exceeded resources correctly by setting the failed status in status map. func TestHandleMemExceeded(t *testing.T) { testKubelet := newTestKubelet(t) kl := testKubelet.kubelet testKubelet.fakeCadvisor.On("MachineInfo").Return(&cadvisorApi.MachineInfo{MemoryCapacity: 100}, nil) spec := api.PodSpec{Containers: []api.Container{{Resources: api.ResourceRequirements{ Limits: api.ResourceList{ "memory": resource.MustParse("90"), }, }}}} pods := []api.Pod{ { ObjectMeta: api.ObjectMeta{ UID: "123456789", Name: "newpod", Namespace: "foo", }, Spec: spec, }, { ObjectMeta: api.ObjectMeta{ UID: "987654321", Name: "oldpod", Namespace: "foo", }, Spec: spec, }, } // Make sure the Pods are in the reverse order of creation time. pods[1].CreationTimestamp = util.NewTime(time.Now()) pods[0].CreationTimestamp = util.NewTime(time.Now().Add(1 * time.Second)) // The newer pod should be rejected. notfittingPodName := kubecontainer.GetPodFullName(&pods[0]) kl.handleNotFittingPods(pods) // Check pod status stored in the status map. status, err := kl.GetPodStatus(notfittingPodName) if err != nil { t.Fatalf("status of pod %q is not found in the status map: %#v", notfittingPodName, err) } if status.Phase != api.PodFailed { t.Fatalf("expected pod status %q. Got %q.", api.PodFailed, status.Phase) } // Check if we can retrieve the pod status from GetPodStatus(). kl.podManager.SetPods(pods) status, err = kl.GetPodStatus(notfittingPodName) if err != nil { t.Fatalf("unable to retrieve pod status for pod %q: %#v.", notfittingPodName, err) } if status.Phase != api.PodFailed { t.Fatalf("expected pod status %q. Got %q.", api.PodFailed, status.Phase) } } // TODO(filipg): This test should be removed once StatusSyncer can do garbage collection without external signal. func TestPurgingObsoleteStatusMapEntries(t *testing.T) { testKubelet := newTestKubelet(t) testKubelet.fakeCadvisor.On("MachineInfo").Return(&cadvisorApi.MachineInfo{}, nil) kl := testKubelet.kubelet pods := []api.Pod{ {ObjectMeta: api.ObjectMeta{Name: "pod1"}, Spec: api.PodSpec{Containers: []api.Container{{Ports: []api.ContainerPort{{HostPort: 80}}}}}}, {ObjectMeta: api.ObjectMeta{Name: "pod2"}, Spec: api.PodSpec{Containers: []api.Container{{Ports: []api.ContainerPort{{HostPort: 80}}}}}}, } // Run once to populate the status map. kl.handleNotFittingPods(pods) if _, err := kl.GetPodStatus(kubecontainer.BuildPodFullName("pod2", "")); err != nil { t.Fatalf("expected to have status cached for %q: %v", "pod2", err) } // Sync with empty pods so that the entry in status map will be removed. kl.SyncPods([]api.Pod{}, emptyPodUIDs, map[string]api.Pod{}, time.Now()) if _, err := kl.GetPodStatus(kubecontainer.BuildPodFullName("pod2", "")); err == nil { t.Fatalf("expected to not have status cached for %q: %v", "pod2", err) } } func TestValidatePodStatus(t *testing.T) { testKubelet := newTestKubelet(t) kubelet := testKubelet.kubelet testCases := []struct { podPhase api.PodPhase success bool }{ {api.PodRunning, true}, {api.PodSucceeded, true}, {api.PodFailed, true}, {api.PodPending, false}, {api.PodUnknown, false}, } for i, tc := range testCases { err := kubelet.validatePodPhase(&api.PodStatus{Phase: tc.podPhase}) if tc.success { if err != nil { t.Errorf("[case %d]: unexpected failure - %v", i, err) } } else if err == nil { t.Errorf("[case %d]: unexpected success", i) } } } func TestValidateContainerStatus(t *testing.T) { testKubelet := newTestKubelet(t) kubelet := testKubelet.kubelet containerName := "x" testCases := []struct { statuses []api.ContainerStatus success bool }{ { statuses: []api.ContainerStatus{ { Name: containerName, State: api.ContainerState{ Running: &api.ContainerStateRunning{}, }, }, }, success: true, }, { statuses: []api.ContainerStatus{ { Name: containerName, State: api.ContainerState{ Termination: &api.ContainerStateTerminated{}, }, }, }, success: true, }, { statuses: []api.ContainerStatus{ { Name: containerName, State: api.ContainerState{ Waiting: &api.ContainerStateWaiting{}, }, }, }, success: false, }, } for i, tc := range testCases { _, err := kubelet.validateContainerStatus(&api.PodStatus{ ContainerStatuses: tc.statuses, }, containerName) if tc.success { if err != nil { t.Errorf("[case %d]: unexpected failure - %v", i, err) } } else if err == nil { t.Errorf("[case %d]: unexpected success", i) } } if _, err := kubelet.validateContainerStatus(&api.PodStatus{ ContainerStatuses: testCases[0].statuses, }, "blah"); err == nil { t.Errorf("expected error with invalid container name") } } func TestUpdateNewNodeStatus(t *testing.T) { testKubelet := newTestKubelet(t) kubelet := testKubelet.kubelet kubeClient := testKubelet.fakeKubeClient kubeClient.ReactFn = testclient.NewSimpleFake(&api.NodeList{Items: []api.Node{ {ObjectMeta: api.ObjectMeta{Name: "testnode"}}, }}).ReactFn machineInfo := &cadvisorApi.MachineInfo{ MachineID: "123", SystemUUID: "abc", BootID: "1b3", NumCores: 2, MemoryCapacity: 1024, } mockCadvisor := testKubelet.fakeCadvisor mockCadvisor.On("MachineInfo").Return(machineInfo, nil) versionInfo := &cadvisorApi.VersionInfo{ KernelVersion: "3.16.0-0.bpo.4-amd64", ContainerOsVersion: "Debian GNU/Linux 7 (wheezy)", DockerVersion: "1.5.0", } mockCadvisor.On("VersionInfo").Return(versionInfo, nil) expectedNode := &api.Node{ ObjectMeta: api.ObjectMeta{Name: "testnode"}, Spec: api.NodeSpec{}, Status: api.NodeStatus{ Conditions: []api.NodeCondition{ { Type: api.NodeReady, Status: api.ConditionTrue, Reason: fmt.Sprintf("kubelet is posting ready status"), LastHeartbeatTime: util.Time{}, LastTransitionTime: util.Time{}, }, }, NodeInfo: api.NodeSystemInfo{ MachineID: "123", SystemUUID: "abc", BootID: "1b3", KernelVersion: "3.16.0-0.bpo.4-amd64", OsImage: "Debian GNU/Linux 7 (wheezy)", ContainerRuntimeVersion: "docker://1.5.0", KubeletVersion: version.Get().String(), KubeProxyVersion: version.Get().String(), }, Capacity: api.ResourceList{ api.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI), api.ResourceMemory: *resource.NewQuantity(1024, resource.BinarySI), }, }, } if err := kubelet.updateNodeStatus(); err != nil { t.Errorf("unexpected error: %v", err) } if len(kubeClient.Actions) != 2 || kubeClient.Actions[1].Action != "update-node" { t.Fatalf("unexpected actions: %v", kubeClient.Actions) } updatedNode, ok := kubeClient.Actions[1].Value.(*api.Node) if !ok { t.Errorf("unexpected object type") } if updatedNode.Status.Conditions[0].LastHeartbeatTime.IsZero() { t.Errorf("unexpected zero last probe timestamp") } if updatedNode.Status.Conditions[0].LastTransitionTime.IsZero() { t.Errorf("unexpected zero last transition timestamp") } updatedNode.Status.Conditions[0].LastHeartbeatTime = util.Time{} updatedNode.Status.Conditions[0].LastTransitionTime = util.Time{} if !reflect.DeepEqual(expectedNode, updatedNode) { t.Errorf("unexpected objects: %s", util.ObjectDiff(expectedNode, updatedNode)) } } func TestUpdateExistingNodeStatus(t *testing.T) { testKubelet := newTestKubelet(t) kubelet := testKubelet.kubelet kubeClient := testKubelet.fakeKubeClient kubeClient.ReactFn = testclient.NewSimpleFake(&api.NodeList{Items: []api.Node{ { ObjectMeta: api.ObjectMeta{Name: "testnode"}, Spec: api.NodeSpec{}, Status: api.NodeStatus{ Conditions: []api.NodeCondition{ { Type: api.NodeReady, Status: api.ConditionTrue, Reason: fmt.Sprintf("kubelet is posting ready status"), LastHeartbeatTime: util.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC), LastTransitionTime: util.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC), }, }, Capacity: api.ResourceList{ api.ResourceCPU: *resource.NewMilliQuantity(3000, resource.DecimalSI), api.ResourceMemory: *resource.NewQuantity(2048, resource.BinarySI), }, }, }, }}).ReactFn mockCadvisor := testKubelet.fakeCadvisor machineInfo := &cadvisorApi.MachineInfo{ MachineID: "123", SystemUUID: "abc", BootID: "1b3", NumCores: 2, MemoryCapacity: 1024, } mockCadvisor.On("MachineInfo").Return(machineInfo, nil) versionInfo := &cadvisorApi.VersionInfo{ KernelVersion: "3.16.0-0.bpo.4-amd64", ContainerOsVersion: "Debian GNU/Linux 7 (wheezy)", DockerVersion: "1.5.0", } mockCadvisor.On("VersionInfo").Return(versionInfo, nil) expectedNode := &api.Node{ ObjectMeta: api.ObjectMeta{Name: "testnode"}, Spec: api.NodeSpec{}, Status: api.NodeStatus{ Conditions: []api.NodeCondition{ { Type: api.NodeReady, Status: api.ConditionTrue, Reason: fmt.Sprintf("kubelet is posting ready status"), LastHeartbeatTime: util.Time{}, // placeholder LastTransitionTime: util.Time{}, // placeholder }, }, NodeInfo: api.NodeSystemInfo{ MachineID: "123", SystemUUID: "abc", BootID: "1b3", KernelVersion: "3.16.0-0.bpo.4-amd64", OsImage: "Debian GNU/Linux 7 (wheezy)", ContainerRuntimeVersion: "docker://1.5.0", KubeletVersion: version.Get().String(), KubeProxyVersion: version.Get().String(), }, Capacity: api.ResourceList{ api.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI), api.ResourceMemory: *resource.NewQuantity(1024, resource.BinarySI), }, }, } if err := kubelet.updateNodeStatus(); err != nil { t.Errorf("unexpected error: %v", err) } if len(kubeClient.Actions) != 2 { t.Errorf("unexpected actions: %v", kubeClient.Actions) } updatedNode, ok := kubeClient.Actions[1].Value.(*api.Node) if !ok { t.Errorf("unexpected object type") } // Expect LastProbeTime to be updated to Now, while LastTransitionTime to be the same. if reflect.DeepEqual(updatedNode.Status.Conditions[0].LastHeartbeatTime.Rfc3339Copy().UTC(), util.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC).Time) { t.Errorf("expected \n%v\n, got \n%v", util.Now(), util.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC)) } if !reflect.DeepEqual(updatedNode.Status.Conditions[0].LastTransitionTime.Rfc3339Copy().UTC(), util.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC).Time) { t.Errorf("expected \n%#v\n, got \n%#v", updatedNode.Status.Conditions[0].LastTransitionTime.Rfc3339Copy(), util.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC)) } updatedNode.Status.Conditions[0].LastHeartbeatTime = util.Time{} updatedNode.Status.Conditions[0].LastTransitionTime = util.Time{} if !reflect.DeepEqual(expectedNode, updatedNode) { t.Errorf("expected \n%v\n, got \n%v", expectedNode, updatedNode) } } func TestUpdateNodeStatusError(t *testing.T) { testKubelet := newTestKubelet(t) kubelet := testKubelet.kubelet // No matching node for the kubelet testKubelet.fakeKubeClient.ReactFn = testclient.NewSimpleFake(&api.NodeList{Items: []api.Node{}}).ReactFn if err := kubelet.updateNodeStatus(); err == nil { t.Errorf("unexpected non error: %v", err) } if len(testKubelet.fakeKubeClient.Actions) != nodeStatusUpdateRetry { t.Errorf("unexpected actions: %v", testKubelet.fakeKubeClient.Actions) } } func TestCreateMirrorPod(t *testing.T) { testKubelet := newTestKubelet(t) kl := testKubelet.kubelet manager := testKubelet.fakeMirrorClient pod := api.Pod{ ObjectMeta: api.ObjectMeta{ UID: "12345678", Name: "bar", Namespace: "foo", Annotations: map[string]string{ ConfigSourceAnnotationKey: "file", }, }, } pods := []api.Pod{pod} kl.podManager.SetPods(pods) err := kl.syncPod(&pod, nil, container.Pod{}) if err != nil { t.Errorf("unexpected error: %v", err) } podFullName := kubecontainer.GetPodFullName(&pod) if !manager.HasPod(podFullName) { t.Errorf("expected mirror pod %q to be created", podFullName) } if manager.NumOfPods() != 1 || !manager.HasPod(podFullName) { t.Errorf("expected one mirror pod %q, got %v", podFullName, manager.GetPods()) } } func TestDeleteOrphanedMirrorPods(t *testing.T) { testKubelet := newTestKubelet(t) testKubelet.fakeCadvisor.On("MachineInfo").Return(&cadvisorApi.MachineInfo{}, nil) kl := testKubelet.kubelet manager := testKubelet.fakeMirrorClient orphanPods := []api.Pod{ { ObjectMeta: api.ObjectMeta{ UID: "12345678", Name: "pod1", Namespace: "ns", Annotations: map[string]string{ ConfigSourceAnnotationKey: "api", ConfigMirrorAnnotationKey: "mirror", }, }, }, { ObjectMeta: api.ObjectMeta{ UID: "12345679", Name: "pod2", Namespace: "ns", Annotations: map[string]string{ ConfigSourceAnnotationKey: "api", ConfigMirrorAnnotationKey: "mirror", }, }, }, } kl.podManager.SetPods(orphanPods) pods, mirrorMap := kl.podManager.GetPodsAndMirrorMap() // Sync with an empty pod list to delete all mirror pods. err := kl.SyncPods(pods, emptyPodUIDs, mirrorMap, time.Now()) if err != nil { t.Errorf("unexpected error: %v", err) } if manager.NumOfPods() != 0 { t.Errorf("expected zero mirror pods, got %v", manager.GetPods()) } for _, pod := range orphanPods { name := kubecontainer.GetPodFullName(&pod) creates, deletes := manager.GetCounts(name) if creates != 0 || deletes != 1 { t.Errorf("expected 0 creation and one deletion of %q, got %d, %d", name, creates, deletes) } } } func TestGetContainerInfoForMirrorPods(t *testing.T) { // pods contain one static and one mirror pod with the same name but // different UIDs. pods := []api.Pod{ { ObjectMeta: api.ObjectMeta{ UID: "1234", Name: "qux", Namespace: "ns", Annotations: map[string]string{ ConfigSourceAnnotationKey: "file", }, }, Spec: api.PodSpec{ Containers: []api.Container{ {Name: "foo"}, }, }, }, { ObjectMeta: api.ObjectMeta{ UID: "5678", Name: "qux", Namespace: "ns", Annotations: map[string]string{ ConfigSourceAnnotationKey: "api", ConfigMirrorAnnotationKey: "mirror", }, }, Spec: api.PodSpec{ Containers: []api.Container{ {Name: "foo"}, }, }, }, } containerID := "ab2cdf" containerPath := fmt.Sprintf("/docker/%v", containerID) containerInfo := cadvisorApi.ContainerInfo{ ContainerReference: cadvisorApi.ContainerReference{ Name: containerPath, }, } testKubelet := newTestKubelet(t) kubelet := testKubelet.kubelet fakeDocker := testKubelet.fakeDocker mockCadvisor := testKubelet.fakeCadvisor cadvisorReq := &cadvisorApi.ContainerInfoRequest{} mockCadvisor.On("DockerContainer", containerID, cadvisorReq).Return(containerInfo, nil) fakeDocker.ContainerList = []docker.APIContainers{ { ID: containerID, Names: []string{"/k8s_foo_qux_ns_1234_42"}, }, } kubelet.podManager.SetPods(pods) // Use the mirror pod UID to retrieve the stats. stats, err := kubelet.GetContainerInfo("qux_ns", "5678", "foo", cadvisorReq) if err != nil { t.Errorf("unexpected error: %v", err) } if stats == nil { t.Fatalf("stats should not be nil") } mockCadvisor.AssertExpectations(t) } func TestDoNotCacheStatusForStaticPods(t *testing.T) { testKubelet := newTestKubelet(t) testKubelet.fakeCadvisor.On("MachineInfo").Return(&cadvisorApi.MachineInfo{}, nil) kubelet := testKubelet.kubelet waitGroup := testKubelet.waitGroup pods := []api.Pod{ { ObjectMeta: api.ObjectMeta{ UID: "12345678", Name: "foo", Namespace: "new", Annotations: map[string]string{ ConfigSourceAnnotationKey: "file", }, }, Spec: api.PodSpec{ Containers: []api.Container{ {Name: "bar"}, }, }, }, } kubelet.podManager.SetPods(pods) waitGroup.Add(1) err := kubelet.SyncPods(pods, emptyPodUIDs, map[string]api.Pod{}, time.Now()) if err != nil { t.Errorf("unexpected error: %v", err) } waitGroup.Wait() podFullName := kubecontainer.GetPodFullName(&pods[0]) status, ok := kubelet.statusManager.GetPodStatus(podFullName) if ok { t.Errorf("unexpected status %#v found for static pod %q", status, podFullName) } } func TestHostNetworkAllowed(t *testing.T) { testKubelet := newTestKubelet(t) kubelet := testKubelet.kubelet capabilities.SetForTests(capabilities.Capabilities{ HostNetworkSources: []string{ApiserverSource, FileSource}, }) pod := &api.Pod{ ObjectMeta: api.ObjectMeta{ UID: "12345678", Name: "foo", Namespace: "new", Annotations: map[string]string{ ConfigSourceAnnotationKey: FileSource, }, }, Spec: api.PodSpec{ Containers: []api.Container{ {Name: "foo"}, }, HostNetwork: true, }, } err := kubelet.syncPod(pod, nil, container.Pod{}) if err != nil { t.Errorf("expected pod infra creation to succeed: %v", err) } } func TestHostNetworkDisallowed(t *testing.T) { testKubelet := newTestKubelet(t) kubelet := testKubelet.kubelet capabilities.SetForTests(capabilities.Capabilities{ HostNetworkSources: []string{}, }) pod := &api.Pod{ ObjectMeta: api.ObjectMeta{ UID: "12345678", Name: "foo", Namespace: "new", Annotations: map[string]string{ ConfigSourceAnnotationKey: FileSource, }, }, Spec: api.PodSpec{ Containers: []api.Container{ {Name: "foo"}, }, HostNetwork: true, }, } err := kubelet.syncPod(pod, nil, container.Pod{}) if err == nil { t.Errorf("expected pod infra creation to fail") } }