// StartPods check for numPods in TestNS. If they exist, it no-ops, otherwise it starts up
// a temp rc, scales it to match numPods, then deletes the rc leaving behind the pods.
func StartPods(numPods int, host string, restClient *client.Client) error {
start := time.Now()
defer func() {
glog.Infof("StartPods took %v with numPods %d", time.Since(start), numPods)
}()
hostField := fields.OneTermEqualSelector(client.PodHost, host)
pods, err := restClient.Pods(TestNS).List(labels.Everything(), hostField)
if err != nil || len(pods.Items) == numPods {
return err
}
glog.Infof("Found %d pods that match host %v, require %d", len(pods.Items), hostField, numPods)
// For the sake of simplicity, assume all pods in TestNS have selectors matching TestRCManifest.
controller := RCFromManifest(TestRCManifest)
// Make the rc unique to the given host.
controller.Spec.Replicas = numPods
controller.Spec.Template.Spec.NodeName = host
controller.Name = controller.Name + host
controller.Spec.Selector["host"] = host
controller.Spec.Template.Labels["host"] = host
if rc, err := StartRC(controller, restClient); err != nil {
return err
} else {
// Delete the rc, otherwise when we restart master components for the next benchmark
// the rc controller will race with the pods controller in the rc manager.
return restClient.ReplicationControllers(TestNS).Delete(rc.Name)
}
}
// testHostIP tests that a pod gets a host IP
func testHostIP(c *client.Client, pod *api.Pod) {
ns := "e2e-test-" + string(util.NewUUID())
_, err := createNamespaceIfDoesNotExist(c, ns)
expectNoError(err, fmt.Sprintf("creating namespace %s", ns))
podClient := c.Pods(ns)
By("creating pod")
defer podClient.Delete(pod.Name, nil)
_, err = podClient.Create(pod)
if err != nil {
Fail(fmt.Sprintf("Failed to create pod: %v", err))
}
By("ensuring that pod is running and has a hostIP")
// Wait for the pods to enter the running state. Waiting loops until the pods
// are running so non-running pods cause a timeout for this test.
err = waitForPodRunningInNamespace(c, pod.Name, ns)
Expect(err).NotTo(HaveOccurred())
// Try to make sure we get a hostIP for each pod.
hostIPTimeout := 2 * time.Minute
t := time.Now()
for {
p, err := podClient.Get(pod.Name)
Expect(err).NotTo(HaveOccurred())
if p.Status.HostIP != "" {
Logf("Pod %s has hostIP: %s", p.Name, p.Status.HostIP)
break
}
if time.Since(t) >= hostIPTimeout {
Failf("Gave up waiting for hostIP of pod %s after %v seconds",
p.Name, time.Since(t).Seconds())
}
Logf("Retrying to get the hostIP of pod %s", p.Name)
time.Sleep(5 * time.Second)
}
}
func verifyExpectedRcsExistAndGetExpectedPods(c *client.Client) ([]string, error) {
expectedPods := []string{}
// Iterate over the labels that identify the replication controllers that we
// want to check. The rcLabels contains the value values for the k8s-app key
// that identify the replication controllers that we want to check. Using a label
// rather than an explicit name is preferred because the names will typically have
// a version suffix e.g. heapster-monitoring-v1 and this will change after a rolling
// update e.g. to heapster-monitoring-v2. By using a label query we can check for the
// situaiton when a heapster-monitoring-v1 and heapster-monitoring-v2 replication controller
// is running (which would be an error except during a rolling update).
for _, rcLabel := range rcLabels {
rcList, err := c.ReplicationControllers(api.NamespaceDefault).List(labels.Set{"k8s-app": rcLabel}.AsSelector())
if err != nil {
return nil, err
}
if len(rcList.Items) != 1 {
return nil, fmt.Errorf("expected to find one replica for RC with label %s but got %d",
rcLabel, len(rcList.Items))
}
for _, rc := range rcList.Items {
podList, err := c.Pods(api.NamespaceDefault).List(labels.Set(rc.Spec.Selector).AsSelector(), fields.Everything())
if err != nil {
return nil, err
}
for _, pod := range podList.Items {
expectedPods = append(expectedPods, string(pod.UID))
}
}
}
return expectedPods, nil
}
func runSchedulerNoPhantomPodsTest(client *client.Client) {
pod := &api.Pod{
Spec: api.PodSpec{
Containers: []api.Container{
{
Name: "c1",
Image: "qingyuan/pause",
Ports: []api.ContainerPort{
{ContainerPort: 1234, HostPort: 9999},
},
ImagePullPolicy: api.PullIfNotPresent,
},
},
},
}
// Assuming we only have two kublets, the third pod here won't schedule
// if the scheduler doesn't correctly handle the delete for the second
// pod.
pod.ObjectMeta.Name = "phantom.foo"
foo, err := client.Pods(api.NamespaceDefault).Create(pod)
if err != nil {
glog.Fatalf("Failed to create pod: %v, %v", pod, err)
}
if err := wait.Poll(time.Second, time.Second*30, podRunning(client, foo.Namespace, foo.Name)); err != nil {
glog.Fatalf("FAILED: pod never started running %v", err)
}
pod.ObjectMeta.Name = "phantom.bar"
bar, err := client.Pods(api.NamespaceDefault).Create(pod)
if err != nil {
glog.Fatalf("Failed to create pod: %v, %v", pod, err)
}
if err := wait.Poll(time.Second, time.Second*30, podRunning(client, bar.Namespace, bar.Name)); err != nil {
glog.Fatalf("FAILED: pod never started running %v", err)
}
// Delete a pod to free up room.
glog.Infof("Deleting pod %v", bar.Name)
err = client.Pods(api.NamespaceDefault).Delete(bar.Name, nil)
if err != nil {
glog.Fatalf("FAILED: couldn't delete pod %q: %v", bar.Name, err)
}
pod.ObjectMeta.Name = "phantom.baz"
baz, err := client.Pods(api.NamespaceDefault).Create(pod)
if err != nil {
glog.Fatalf("Failed to create pod: %v, %v", pod, err)
}
if err := wait.Poll(time.Second, time.Second*60, podRunning(client, baz.Namespace, baz.Name)); err != nil {
glog.Fatalf("FAILED: (Scheduler probably didn't process deletion of 'phantom.bar') Pod never started running: %v", err)
}
glog.Info("Scheduler doesn't make phantom pods: test passed.")
}
func translatePodNameToIpOrFail(c *client.Client, ns string, expectedEndpoints map[string][]int) map[string][]int {
portsByIp := make(map[string][]int)
for name, portList := range expectedEndpoints {
pod, err := c.Pods(ns).Get(name)
if err != nil {
Failf("failed to get pod %s, that's pretty weird. validation failed: %s", name, err)
}
portsByIp[pod.Status.PodIP] = portList
By(fmt.Sprintf(""))
}
By(fmt.Sprintf("successfully translated pod names to ips: %v -> %v on namespace %s", expectedEndpoints, portsByIp, ns))
return portsByIp
}
func doServiceAccountAPIRequests(t *testing.T, c *client.Client, ns string, authenticated bool, canRead bool, canWrite bool) {
testSecret := &api.Secret{
ObjectMeta: api.ObjectMeta{Name: "testSecret"},
Data: map[string][]byte{"test": []byte("data")},
}
readOps := []testOperation{
func() error { _, err := c.Secrets(ns).List(labels.Everything(), fields.Everything()); return err },
func() error { _, err := c.Pods(ns).List(labels.Everything(), fields.Everything()); return err },
}
writeOps := []testOperation{
func() error { _, err := c.Secrets(ns).Create(testSecret); return err },
func() error { return c.Secrets(ns).Delete(testSecret.Name) },
}
for _, op := range readOps {
err := op()
unauthorizedError := errors.IsUnauthorized(err)
forbiddenError := errors.IsForbidden(err)
switch {
case !authenticated && !unauthorizedError:
t.Fatalf("expected unauthorized error, got %v", err)
case authenticated && unauthorizedError:
t.Fatalf("unexpected unauthorized error: %v", err)
case authenticated && canRead && forbiddenError:
t.Fatalf("unexpected forbidden error: %v", err)
case authenticated && !canRead && !forbiddenError:
t.Fatalf("expected forbidden error, got: %v", err)
}
}
for _, op := range writeOps {
err := op()
unauthorizedError := errors.IsUnauthorized(err)
forbiddenError := errors.IsForbidden(err)
switch {
case !authenticated && !unauthorizedError:
t.Fatalf("expected unauthorized error, got %v", err)
case authenticated && unauthorizedError:
t.Fatalf("unexpected unauthorized error: %v", err)
case authenticated && canWrite && forbiddenError:
t.Fatalf("unexpected forbidden error: %v", err)
case authenticated && !canWrite && !forbiddenError:
t.Fatalf("expected forbidden error, got: %v", err)
}
}
}
func podScheduled(c *client.Client, podNamespace, podName string) wait.ConditionFunc {
return func() (bool, error) {
pod, err := c.Pods(podNamespace).Get(podName)
if errors.IsNotFound(err) {
return false, nil
}
if err != nil {
// This could be a connection error so we want to retry.
return false, nil
}
if pod.Spec.NodeName == "" {
return false, nil
}
return true, nil
}
}
func podRunning(c *client.Client, podNamespace string, podName string) wait.ConditionFunc {
return func() (bool, error) {
pod, err := c.Pods(podNamespace).Get(podName)
if apierrors.IsNotFound(err) {
return false, nil
}
if err != nil {
// This could be a connection error so we want to retry, but log the error.
glog.Errorf("Error when reading pod %q: %v", podName, err)
return false, nil
}
if pod.Status.Phase != api.PodRunning {
return false, nil
}
return true, nil
}
}
// Starts a container specified by config.serverImage and exports all
// config.serverPorts from it. The returned pod should be used to get the server
// IP address and create appropriate VolumeSource.
func startVolumeServer(client *client.Client, config VolumeTestConfig) *api.Pod {
podClient := client.Pods(config.namespace)
portCount := len(config.serverPorts)
serverPodPorts := make([]api.ContainerPort, portCount)
for i := 0; i < portCount; i++ {
portName := fmt.Sprintf("%s-%d", config.prefix, i)
serverPodPorts[i] = api.ContainerPort{
Name: portName,
ContainerPort: config.serverPorts[i],
Protocol: api.ProtocolTCP,
}
}
By(fmt.Sprint("creating ", config.prefix, " server pod"))
privileged := new(bool)
*privileged = true
serverPod := &api.Pod{
TypeMeta: api.TypeMeta{
Kind: "Pod",
APIVersion: "v1",
},
ObjectMeta: api.ObjectMeta{
Name: config.prefix + "-server",
Labels: map[string]string{
"role": config.prefix + "-server",
},
},
Spec: api.PodSpec{
Containers: []api.Container{
{
Name: config.prefix + "-server",
Image: config.serverImage,
SecurityContext: &api.SecurityContext{
Privileged: privileged,
},
Ports: serverPodPorts,
},
},
},
}
_, err := podClient.Create(serverPod)
expectNoError(err, "Failed to create %s pod: %v", serverPod.Name, err)
expectNoError(waitForPodRunningInNamespace(client, serverPod.Name, config.namespace))
By("locating the server pod")
pod, err := podClient.Get(serverPod.Name)
expectNoError(err, "Cannot locate the server pod %v: %v", serverPod.Name, err)
By("sleeping a bit to give the server time to start")
time.Sleep(20 * time.Second)
return pod
}
// Clean both server and client pods.
func volumeTestCleanup(client *client.Client, config VolumeTestConfig) {
By(fmt.Sprint("cleaning the environment after ", config.prefix))
defer GinkgoRecover()
podClient := client.Pods(config.namespace)
// ignore all errors, the pods may not be even created
podClient.Delete(config.prefix+"-client", nil)
podClient.Delete(config.prefix+"-server", nil)
}
func addEndpointPodOrFail(c *client.Client, ns, name string, labels map[string]string, containerPorts []api.ContainerPort) {
By(fmt.Sprintf("Adding pod %v in namespace %v", name, ns))
pod := &api.Pod{
ObjectMeta: api.ObjectMeta{
Name: name,
Labels: labels,
},
Spec: api.PodSpec{
Containers: []api.Container{
{
Name: "test",
Image: "qingyuan/pause",
Ports: containerPorts,
},
},
},
}
_, err := c.Pods(ns).Create(pod)
Expect(err).NotTo(HaveOccurred())
}
func runLivenessTest(c *client.Client, podDescr *api.Pod, expectRestart bool) {
ns := "e2e-test-" + string(util.NewUUID())
_, err := createNamespaceIfDoesNotExist(c, ns)
expectNoError(err, fmt.Sprintf("creating namespace %s", ns))
By(fmt.Sprintf("Creating pod %s in namespace %s", podDescr.Name, ns))
_, err = c.Pods(ns).Create(podDescr)
expectNoError(err, fmt.Sprintf("creating pod %s", podDescr.Name))
// At the end of the test, clean up by removing the pod.
defer func() {
By("deleting the pod")
c.Pods(ns).Delete(podDescr.Name, nil)
}()
// Wait until the pod is not pending. (Here we need to check for something other than
// 'Pending' other than checking for 'Running', since when failures occur, we go to
// 'Terminated' which can cause indefinite blocking.)
expectNoError(waitForPodNotPending(c, ns, podDescr.Name),
fmt.Sprintf("starting pod %s in namespace %s", podDescr.Name, ns))
By(fmt.Sprintf("Started pod %s in namespace %s", podDescr.Name, ns))
// Check the pod's current state and verify that restartCount is present.
By("checking the pod's current state and verifying that restartCount is present")
pod, err := c.Pods(ns).Get(podDescr.Name)
expectNoError(err, fmt.Sprintf("getting pod %s in namespace %s", podDescr.Name, ns))
initialRestartCount := api.GetExistingContainerStatus(pod.Status.ContainerStatuses, "liveness").RestartCount
By(fmt.Sprintf("Initial restart count of pod %s is %d", podDescr.Name, initialRestartCount))
// Wait for at most 48 * 5 = 240s = 4 minutes until restartCount is incremented
restarts := false
for i := 0; i < 48; i++ {
// Wait until restartCount is incremented.
time.Sleep(5 * time.Second)
pod, err = c.Pods(ns).Get(podDescr.Name)
expectNoError(err, fmt.Sprintf("getting pod %s", podDescr.Name))
restartCount := api.GetExistingContainerStatus(pod.Status.ContainerStatuses, "liveness").RestartCount
By(fmt.Sprintf("Restart count of pod %s in namespace %s is now %d", podDescr.Name, ns, restartCount))
if restartCount > initialRestartCount {
By(fmt.Sprintf("Restart count of pod %s in namespace %s increased from %d to %d during the test", podDescr.Name, ns, initialRestartCount, restartCount))
restarts = true
break
}
}
if restarts != expectRestart {
Fail(fmt.Sprintf("pod %s in namespace %s - expected restarts: %v, found restarts: %v", podDescr.Name, ns, expectRestart, restarts))
}
}
// podsOnMinions returns true when all of the selected pods exist on a minion.
func podsOnMinions(c *client.Client, podNamespace string, labelSelector labels.Selector) wait.ConditionFunc {
// Wait until all pods are running on the node.
return func() (bool, error) {
pods, err := c.Pods(podNamespace).List(labelSelector, fields.Everything())
if err != nil {
glog.Infof("Unable to get pods to list: %v", err)
return false, nil
}
for i := range pods.Items {
pod := pods.Items[i]
podString := fmt.Sprintf("%q/%q", pod.Namespace, pod.Name)
glog.Infof("Check whether pod %q exists on node %q", podString, pod.Spec.NodeName)
if len(pod.Spec.NodeName) == 0 {
glog.Infof("Pod %q is not bound to a host yet", podString)
return false, nil
}
if pod.Status.Phase != api.PodRunning {
return false, nil
}
}
return true, nil
}
}
func createRunningPod(wg *sync.WaitGroup, c *client.Client, name, ns, image string, labels map[string]string) {
defer GinkgoRecover()
defer wg.Done()
pod := &api.Pod{
TypeMeta: api.TypeMeta{
Kind: "Pod",
},
ObjectMeta: api.ObjectMeta{
Name: name,
Labels: labels,
},
Spec: api.PodSpec{
Containers: []api.Container{
{
Name: name,
Image: image,
},
},
},
}
_, err := c.Pods(ns).Create(pod)
expectNoError(err)
expectNoError(waitForPodRunningInNamespace(c, name, ns))
}
err = c.PersistentVolumeClaims(ns).Delete(pvc.Name)
Expect(err).NotTo(HaveOccurred())
// allow the recycler a chance to catch up. it has to perform NFS scrub, which can be slow in e2e.
waitForPersistentVolumePhase(api.VolumeAvailable, c, pv.Name, 5*time.Second, 300*time.Second)
pv, err = c.PersistentVolumes().Get(pv.Name)
Expect(err).NotTo(HaveOccurred())
if pv.Spec.ClaimRef != nil {
Failf("Expected PersistentVolume to be unbound, but found non-nil ClaimRef: %+v", pv)
}
// The NFS Server pod we're using contains an index.html file
// Verify the file was really scrubbed from the volume
podTemplate := makeCheckPod(ns, serverIP)
checkpod, err := c.Pods(ns).Create(podTemplate)
expectNoError(err, "Failed to create checker pod: %v", err)
err = waitForPodSuccessInNamespace(c, checkpod.Name, checkpod.Spec.Containers[0].Name, checkpod.Namespace)
Expect(err).NotTo(HaveOccurred())
})
})
func makePersistentVolume(serverIP string) *api.PersistentVolume {
return &api.PersistentVolume{
ObjectMeta: api.ObjectMeta{
GenerateName: "nfs-",
},
Spec: api.PersistentVolumeSpec{
PersistentVolumeReclaimPolicy: api.PersistentVolumeReclaimRecycle,
Capacity: api.ResourceList{
api.ResourceName(api.ResourceStorage): resource.MustParse("2Gi"),
func podNotFound(c *client.Client, podNamespace string, podName string) wait.ConditionFunc {
return func() (bool, error) {
_, err := c.Pods(podNamespace).Get(podName)
return apierrors.IsNotFound(err), nil
}
}
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
)
var _ = Describe("Events", func() {
var c *client.Client
BeforeEach(func() {
var err error
c, err = loadClient()
Expect(err).NotTo(HaveOccurred())
})
It("should be sent by qinglets and the scheduler about pods scheduling and running", func() {
podClient := c.Pods(api.NamespaceDefault)
By("creating the pod")
name := "send-events-" + string(util.NewUUID())
value := strconv.Itoa(time.Now().Nanosecond())
pod := &api.Pod{
ObjectMeta: api.ObjectMeta{
Name: name,
Labels: map[string]string{
"name": "foo",
"time": value,
},
},
Spec: api.PodSpec{
Containers: []api.Container{
{
// runStaticPodTest is disabled until #6651 is resolved.
func runStaticPodTest(c *client.Client, configFilePath string) {
var testCases = []struct {
desc string
fileContents string
}{
{
desc: "static-pod-from-manifest",
fileContents: `version: v1beta2
id: static-pod-from-manifest
containers:
- name: static-container
image: qingyuan/pause`,
},
{
desc: "static-pod-from-spec",
fileContents: `{
"kind": "Pod",
"apiVersion": "v1beta3",
"metadata": {
"name": "static-pod-from-spec"
},
"spec": {
"containers": [{
"name": "static-container",
"image": "qingyuan/pause"
}]
}
}`,
},
}
for _, testCase := range testCases {
func() {
desc := testCase.desc
manifestFile, err := ioutil.TempFile(configFilePath, "")
defer os.Remove(manifestFile.Name())
ioutil.WriteFile(manifestFile.Name(), []byte(testCase.fileContents), 0600)
// Wait for the mirror pod to be created.
podName := fmt.Sprintf("%s-localhost", desc)
namespace := qinglet.NamespaceDefault
if err := wait.Poll(time.Second, time.Minute*2,
podRunning(c, namespace, podName)); err != nil {
if pods, err := c.Pods(namespace).List(labels.Everything(), fields.Everything()); err == nil {
for _, pod := range pods.Items {
glog.Infof("pod found: %s/%s", namespace, pod.Name)
}
}
glog.Fatalf("%s FAILED: mirror pod has not been created or is not running: %v", desc, err)
}
// Delete the mirror pod, and wait for it to be recreated.
c.Pods(namespace).Delete(podName, nil)
if err = wait.Poll(time.Second, time.Minute*1,
podRunning(c, namespace, podName)); err != nil {
glog.Fatalf("%s FAILED: mirror pod has not been re-created or is not running: %v", desc, err)
}
// Remove the manifest file, and wait for the mirror pod to be deleted.
os.Remove(manifestFile.Name())
if err = wait.Poll(time.Second, time.Minute*1,
podNotFound(c, namespace, podName)); err != nil {
glog.Fatalf("%s FAILED: mirror pod has not been deleted: %v", desc, err)
}
}()
}
}
// DoTestSecrets test secrets for one api version.
func DoTestSecrets(t *testing.T, client *client.Client, apiVersion string) {
// Make a secret object.
ns := "ns"
s := api.Secret{
ObjectMeta: api.ObjectMeta{
Name: "secret",
Namespace: ns,
},
Data: map[string][]byte{
"data": []byte("value1\n"),
},
}
if _, err := client.Secrets(s.Namespace).Create(&s); err != nil {
t.Errorf("unable to create test secret: %v", err)
}
defer deleteSecretOrErrorf(t, client, s.Namespace, s.Name)
// Template for pods that use a secret.
pod := &api.Pod{
ObjectMeta: api.ObjectMeta{
Name: "XXX",
},
Spec: api.PodSpec{
Volumes: []api.Volume{
{
Name: "secvol",
VolumeSource: api.VolumeSource{
Secret: &api.SecretVolumeSource{
SecretName: "secret",
},
},
},
},
Containers: []api.Container{
{
Name: "fake-name",
Image: "fakeimage",
VolumeMounts: []api.VolumeMount{
{
Name: "secvol",
MountPath: "/fake/path",
ReadOnly: true,
},
},
},
},
},
}
// Create a pod to consume secret.
pod.ObjectMeta.Name = "uses-secret"
if _, err := client.Pods(ns).Create(pod); err != nil {
t.Errorf("Failed to create pod: %v", err)
}
defer deletePodOrErrorf(t, client, ns, pod.Name)
// Create a pod that consumes non-existent secret.
pod.ObjectMeta.Name = "uses-non-existent-secret"
if _, err := client.Pods(ns).Create(pod); err != nil {
t.Errorf("Failed to create pod: %v", err)
}
defer deletePodOrErrorf(t, client, ns, pod.Name)
// This pod may fail to run, but we don't currently prevent this, and this
// test can't check whether the qinglet actually pulls the secret.
// Verifying contents of the volumes is out of scope for a
// apiserver<->qinglet integration test. It is covered by an e2e test.
}
func deletePodOrErrorf(t *testing.T, c *client.Client, ns, name string) {
if err := c.Pods(ns).Delete(name, nil); err != nil {
t.Errorf("unable to delete pod %v: %v", name, err)
}
}
func runServiceTest(client *client.Client) {
pod := &api.Pod{
ObjectMeta: api.ObjectMeta{
Name: "foo",
Labels: map[string]string{
"name": "thisisalonglabel",
},
},
Spec: api.PodSpec{
Containers: []api.Container{
{
Name: "c1",
Image: "foo",
Ports: []api.ContainerPort{
{ContainerPort: 1234},
},
ImagePullPolicy: api.PullIfNotPresent,
},
},
RestartPolicy: api.RestartPolicyAlways,
DNSPolicy: api.DNSClusterFirst,
},
Status: api.PodStatus{
PodIP: "1.2.3.4",
},
}
pod, err := client.Pods(api.NamespaceDefault).Create(pod)
if err != nil {
glog.Fatalf("Failed to create pod: %v, %v", pod, err)
}
if err := wait.Poll(time.Second, time.Second*20, podExists(client, pod.Namespace, pod.Name)); err != nil {
glog.Fatalf("FAILED: pod never started running %v", err)
}
svc1 := &api.Service{
ObjectMeta: api.ObjectMeta{Name: "service1"},
Spec: api.ServiceSpec{
Selector: map[string]string{
"name": "thisisalonglabel",
},
Ports: []api.ServicePort{{
Port: 8080,
Protocol: "TCP",
}},
SessionAffinity: "None",
},
}
svc1, err = client.Services(api.NamespaceDefault).Create(svc1)
if err != nil {
glog.Fatalf("Failed to create service: %v, %v", svc1, err)
}
// create an identical service in the non-default namespace
svc3 := &api.Service{
ObjectMeta: api.ObjectMeta{Name: "service1"},
Spec: api.ServiceSpec{
Selector: map[string]string{
"name": "thisisalonglabel",
},
Ports: []api.ServicePort{{
Port: 8080,
Protocol: "TCP",
}},
SessionAffinity: "None",
},
}
svc3, err = client.Services("other").Create(svc3)
if err != nil {
glog.Fatalf("Failed to create service: %v, %v", svc3, err)
}
// TODO Reduce the timeouts in this test when endpoints controller is sped up. See #6045.
if err := wait.Poll(time.Second, time.Second*60, endpointsSet(client, svc1.Namespace, svc1.Name, 1)); err != nil {
glog.Fatalf("FAILED: unexpected endpoints: %v", err)
}
// A second service with the same port.
svc2 := &api.Service{
ObjectMeta: api.ObjectMeta{Name: "service2"},
Spec: api.ServiceSpec{
Selector: map[string]string{
"name": "thisisalonglabel",
},
Ports: []api.ServicePort{{
Port: 8080,
Protocol: "TCP",
}},
SessionAffinity: "None",
},
}
svc2, err = client.Services(api.NamespaceDefault).Create(svc2)
if err != nil {
glog.Fatalf("Failed to create service: %v, %v", svc2, err)
}
if err := wait.Poll(time.Second, time.Second*60, endpointsSet(client, svc2.Namespace, svc2.Name, 1)); err != nil {
glog.Fatalf("FAILED: unexpected endpoints: %v", err)
}
if err := wait.Poll(time.Second, time.Second*60, endpointsSet(client, svc3.Namespace, svc3.Name, 0)); err != nil {
glog.Fatalf("FAILED: service in other namespace should have no endpoints: %v", err)
}
svcList, err := client.Services(api.NamespaceAll).List(labels.Everything())
if err != nil {
glog.Fatalf("Failed to list services across namespaces: %v", err)
}
names := util.NewStringSet()
for _, svc := range svcList.Items {
names.Insert(fmt.Sprintf("%s/%s", svc.Namespace, svc.Name))
}
if !names.HasAll("default/qingyuan", "default/service1", "default/service2", "other/service1") {
glog.Fatalf("Unexpected service list: %#v", names)
}
glog.Info("Service test passed.")
}
func DoTestUnschedulableNodes(t *testing.T, restClient *client.Client, nodeStore cache.Store) {
goodCondition := api.NodeCondition{
Type: api.NodeReady,
Status: api.ConditionTrue,
Reason: fmt.Sprintf("schedulable condition"),
LastHeartbeatTime: util.Time{time.Now()},
}
badCondition := api.NodeCondition{
Type: api.NodeReady,
Status: api.ConditionUnknown,
Reason: fmt.Sprintf("unschedulable condition"),
LastHeartbeatTime: util.Time{time.Now()},
}
// Create a new schedulable node, since we're first going to apply
// the unschedulable condition and verify that pods aren't scheduled.
node := &api.Node{
ObjectMeta: api.ObjectMeta{Name: "node-scheduling-test-node"},
Spec: api.NodeSpec{Unschedulable: false},
Status: api.NodeStatus{
Capacity: api.ResourceList{
api.ResourcePods: *resource.NewQuantity(32, resource.DecimalSI),
},
Conditions: []api.NodeCondition{goodCondition},
},
}
nodeKey, err := cache.MetaNamespaceKeyFunc(node)
if err != nil {
t.Fatalf("Couldn't retrieve key for node %v", node.Name)
}
// The test does the following for each nodeStateManager in this list:
// 1. Create a new node
// 2. Apply the makeUnSchedulable function
// 3. Create a new pod
// 4. Check that the pod doesn't get assigned to the node
// 5. Apply the schedulable function
// 6. Check that the pod *does* get assigned to the node
// 7. Delete the pod and node.
nodeModifications := []nodeStateManager{
// Test node.Spec.Unschedulable=true/false
{
makeUnSchedulable: func(t *testing.T, n *api.Node, s cache.Store, c *client.Client) {
n.Spec.Unschedulable = true
if _, err := c.Nodes().Update(n); err != nil {
t.Fatalf("Failed to update node with unschedulable=true: %v", err)
}
err = waitForReflection(s, nodeKey, func(node interface{}) bool {
// An unschedulable node should get deleted from the store
return node == nil
})
if err != nil {
t.Fatalf("Failed to observe reflected update for setting unschedulable=true: %v", err)
}
},
makeSchedulable: func(t *testing.T, n *api.Node, s cache.Store, c *client.Client) {
n.Spec.Unschedulable = false
if _, err := c.Nodes().Update(n); err != nil {
t.Fatalf("Failed to update node with unschedulable=false: %v", err)
}
err = waitForReflection(s, nodeKey, func(node interface{}) bool {
return node != nil && node.(*api.Node).Spec.Unschedulable == false
})
if err != nil {
t.Fatalf("Failed to observe reflected update for setting unschedulable=false: %v", err)
}
},
},
// Test node.Status.Conditions=ConditionTrue/Unknown
{
makeUnSchedulable: func(t *testing.T, n *api.Node, s cache.Store, c *client.Client) {
n.Status = api.NodeStatus{
Capacity: api.ResourceList{
api.ResourcePods: *resource.NewQuantity(32, resource.DecimalSI),
},
Conditions: []api.NodeCondition{badCondition},
}
if _, err = c.Nodes().UpdateStatus(n); err != nil {
t.Fatalf("Failed to update node with bad status condition: %v", err)
}
err = waitForReflection(s, nodeKey, func(node interface{}) bool {
return node != nil && node.(*api.Node).Status.Conditions[0].Status == api.ConditionUnknown
})
if err != nil {
t.Fatalf("Failed to observe reflected update for status condition update: %v", err)
}
},
makeSchedulable: func(t *testing.T, n *api.Node, s cache.Store, c *client.Client) {
n.Status = api.NodeStatus{
Capacity: api.ResourceList{
api.ResourcePods: *resource.NewQuantity(32, resource.DecimalSI),
},
Conditions: []api.NodeCondition{goodCondition},
}
if _, err = c.Nodes().UpdateStatus(n); err != nil {
t.Fatalf("Failed to update node with healthy status condition: %v", err)
}
waitForReflection(s, nodeKey, func(node interface{}) bool {
return node != nil && node.(*api.Node).Status.Conditions[0].Status == api.ConditionTrue
})
if err != nil {
t.Fatalf("Failed to observe reflected update for status condition update: %v", err)
}
},
},
}
for i, mod := range nodeModifications {
unSchedNode, err := restClient.Nodes().Create(node)
if err != nil {
t.Fatalf("Failed to create node: %v", err)
}
// Apply the unschedulable modification to the node, and wait for the reflection
mod.makeUnSchedulable(t, unSchedNode, nodeStore, restClient)
// Create the new pod, note that this needs to happen post unschedulable
// modification or we have a race in the test.
pod := &api.Pod{
ObjectMeta: api.ObjectMeta{Name: "node-scheduling-test-pod"},
Spec: api.PodSpec{
Containers: []api.Container{{Name: "container", Image: "qingyuan/pause:go"}},
},
}
myPod, err := restClient.Pods(api.NamespaceDefault).Create(pod)
if err != nil {
t.Fatalf("Failed to create pod: %v", err)
}
// There are no schedulable nodes - the pod shouldn't be scheduled.
err = wait.Poll(time.Second, time.Second*10, podScheduled(restClient, myPod.Namespace, myPod.Name))
if err == nil {
t.Errorf("Pod scheduled successfully on unschedulable nodes")
}
if err != wait.ErrWaitTimeout {
t.Errorf("Test %d: failed while trying to confirm the pod does not get scheduled on the node: %v", i, err)
} else {
t.Logf("Test %d: Pod did not get scheduled on an unschedulable node", i)
}
// Apply the schedulable modification to the node, and wait for the reflection
schedNode, err := restClient.Nodes().Get(unSchedNode.Name)
if err != nil {
t.Fatalf("Failed to get node: %v", err)
}
mod.makeSchedulable(t, schedNode, nodeStore, restClient)
// Wait until the pod is scheduled.
err = wait.Poll(time.Second, time.Second*10, podScheduled(restClient, myPod.Namespace, myPod.Name))
if err != nil {
t.Errorf("Test %d: failed to schedule a pod: %v", i, err)
} else {
t.Logf("Test %d: Pod got scheduled on a schedulable node", i)
}
err = restClient.Pods(api.NamespaceDefault).Delete(myPod.Name, nil)
if err != nil {
t.Errorf("Failed to delete pod: %v", err)
}
err = restClient.Nodes().Delete(schedNode.Name)
if err != nil {
t.Errorf("Failed to delete node: %v", err)
}
}
}
func testPreStop(c *client.Client, ns string) {
// This is the server that will receive the preStop notification
podDescr := &api.Pod{
ObjectMeta: api.ObjectMeta{
Name: "server",
},
Spec: api.PodSpec{
Containers: []api.Container{
{
Name: "server",
Image: "qingyuan/nettest:1.3",
Ports: []api.ContainerPort{{ContainerPort: 8080}},
},
},
},
}
By(fmt.Sprintf("Creating server pod %s in namespace %s", podDescr.Name, ns))
_, err := c.Pods(ns).Create(podDescr)
expectNoError(err, fmt.Sprintf("creating pod %s", podDescr.Name))
// At the end of the test, clean up by removing the pod.
defer func() {
By("Deleting the server pod")
c.Pods(ns).Delete(podDescr.Name, nil)
}()
By("Waiting for pods to come up.")
err = waitForPodRunningInNamespace(c, podDescr.Name, ns)
expectNoError(err, "waiting for server pod to start")
val := "{\"Source\": \"prestop\"}"
podOut, err := c.Pods(ns).Get(podDescr.Name)
expectNoError(err, "getting pod info")
preStopDescr := &api.Pod{
ObjectMeta: api.ObjectMeta{
Name: "tester",
},
Spec: api.PodSpec{
Containers: []api.Container{
{
Name: "tester",
Image: "qingyuan/busybox",
Command: []string{"sleep", "600"},
Lifecycle: &api.Lifecycle{
PreStop: &api.Handler{
Exec: &api.ExecAction{
Command: []string{
"wget", "-O-", "--post-data=" + val, fmt.Sprintf("http://%s:8080/write", podOut.Status.PodIP),
},
},
},
},
},
},
},
}
By(fmt.Sprintf("Creating tester pod %s in namespace %s", podDescr.Name, ns))
_, err = c.Pods(ns).Create(preStopDescr)
expectNoError(err, fmt.Sprintf("creating pod %s", preStopDescr.Name))
deletePreStop := true
// At the end of the test, clean up by removing the pod.
defer func() {
if deletePreStop {
By("Deleting the tester pod")
c.Pods(ns).Delete(preStopDescr.Name, nil)
}
}()
err = waitForPodRunningInNamespace(c, preStopDescr.Name, ns)
expectNoError(err, "waiting for tester pod to start")
// Delete the pod with the preStop handler.
By("Deleting pre-stop pod")
if err := c.Pods(ns).Delete(preStopDescr.Name, nil); err == nil {
deletePreStop = false
}
expectNoError(err, fmt.Sprintf("deleting pod: %s", preStopDescr.Name))
// Validate that the server received the web poke.
err = wait.Poll(time.Second*5, time.Second*60, func() (bool, error) {
if body, err := c.Get().
Namespace(ns).Prefix("proxy").
Resource("pods").
Name(podDescr.Name).
Suffix("read").
DoRaw(); err != nil {
By(fmt.Sprintf("Error validating prestop: %v", err))
} else {
Logf("Saw: %s", string(body))
state := State{}
err := json.Unmarshal(body, &state)
if err != nil {
Logf("Error parsing: %v", err)
return false, nil
}
if state.Received["prestop"] != 0 {
return true, nil
}
}
return false, nil
})
expectNoError(err, "validating pre-stop.")
}
testHostIP(c, &api.Pod{
ObjectMeta: api.ObjectMeta{
Name: name,
},
Spec: api.PodSpec{
Containers: []api.Container{
{
Name: "test",
Image: "qingyuan/pause",
},
},
},
})
})
It("should be schedule with cpu and memory limits", func() {
podClient := c.Pods(api.NamespaceDefault)
By("creating the pod")
name := "pod-update-" + string(util.NewUUID())
value := strconv.Itoa(time.Now().Nanosecond())
pod := &api.Pod{
ObjectMeta: api.ObjectMeta{
Name: name,
Labels: map[string]string{
"name": "foo",
"time": value,
},
},
Spec: api.PodSpec{
Containers: []api.Container{
{
Selector: labels,
Ports: []api.ServicePort{{
Port: 80,
TargetPort: util.NewIntOrStringFromInt(80),
}},
},
}
_, err := c.Services(ns).Create(service)
Expect(err).NotTo(HaveOccurred())
validateEndpointsOrFail(c, ns, serviceName, map[string][]int{})
var names []string
defer func() {
for _, name := range names {
err := c.Pods(ns).Delete(name, nil)
Expect(err).NotTo(HaveOccurred())
}
}()
name1 := "test1"
addEndpointPodOrFail(c, ns, name1, labels, []api.ContainerPort{{ContainerPort: 80}})
names = append(names, name1)
validateEndpointsOrFail(c, ns, serviceName, map[string][]int{name1: {80}})
name2 := "test2"
addEndpointPodOrFail(c, ns, name2, labels, []api.ContainerPort{{ContainerPort: 80}})
names = append(names, name2)
validateEndpointsOrFail(c, ns, serviceName, map[string][]int{name1: {80}, name2: {80}})
AfterEach(func() {
// Remove any remaining pods from this test if the
// replication controller still exists and the replica count
// isn't 0. This means the controller wasn't cleaned up
// during the test so clean it up here
rc, err := c.ReplicationControllers(ns).Get(RCName)
if err == nil && rc.Spec.Replicas != 0 {
By("Cleaning up the replication controller")
err := DeleteRC(c, ns, RCName)
expectNoError(err)
}
By("Removing additional pods if any")
for i := 1; i <= minionCount; i++ {
name := additionalPodsPrefix + "-" + strconv.Itoa(i)
c.Pods(ns).Delete(name, nil)
}
By(fmt.Sprintf("Destroying namespace for this suite %v", ns))
if err := c.Namespaces().Delete(ns); err != nil {
Failf("Couldn't delete ns %s", err)
}
expectNoError(writePerfData(c, fmt.Sprintf(testContext.OutputDir+"/%s", uuid), "after"))
// Verify latency metrics
// TODO: We should reset metrics before the test. Currently previous tests influence latency metrics.
highLatencyRequests, err := HighLatencyRequests(c, 3*time.Second, util.NewStringSet("events"))
expectNoError(err)
Expect(highLatencyRequests).NotTo(BeNumerically(">", 0), "There should be no high-latency requests")
})
// A basic test to check the deployment of an image using
// a replication controller. The image serves its hostname
// which is checked for each replica.
func ServeImageOrFail(c *client.Client, test string, image string) {
ns := api.NamespaceDefault
name := "my-hostname-" + test + "-" + string(util.NewUUID())
replicas := 2
// Create a replication controller for a service
// that serves its hostname.
// The source for the Docker containter qingyuan/serve_hostname is
// in contrib/for-demos/serve_hostname
By(fmt.Sprintf("Creating replication controller %s", name))
controller, err := c.ReplicationControllers(ns).Create(&api.ReplicationController{
ObjectMeta: api.ObjectMeta{
Name: name,
},
Spec: api.ReplicationControllerSpec{
Replicas: replicas,
Selector: map[string]string{
"name": name,
},
Template: &api.PodTemplateSpec{
ObjectMeta: api.ObjectMeta{
Labels: map[string]string{"name": name},
},
Spec: api.PodSpec{
Containers: []api.Container{
{
Name: name,
Image: image,
Ports: []api.ContainerPort{{ContainerPort: 9376}},
},
},
},
},
},
})
Expect(err).NotTo(HaveOccurred())
// Cleanup the replication controller when we are done.
defer func() {
// Resize the replication controller to zero to get rid of pods.
By("Cleaning up the replication controller")
rcReaper, err := qingctl.ReaperFor("ReplicationController", c)
if err != nil {
Logf("Failed to cleanup replication controller %v: %v.", controller.Name, err)
}
if _, err = rcReaper.Stop(ns, controller.Name, 0, nil); err != nil {
Logf("Failed to stop replication controller %v: %v.", controller.Name, err)
}
}()
// List the pods, making sure we observe all the replicas.
listTimeout := time.Minute
label := labels.SelectorFromSet(labels.Set(map[string]string{"name": name}))
pods, err := c.Pods(ns).List(label, fields.Everything())
Expect(err).NotTo(HaveOccurred())
t := time.Now()
for {
Logf("Controller %s: Found %d pods out of %d", name, len(pods.Items), replicas)
if len(pods.Items) == replicas {
break
}
if time.Since(t) > listTimeout {
Failf("Controller %s: Gave up waiting for %d pods to come up after seeing only %d pods after %v seconds",
name, replicas, len(pods.Items), time.Since(t).Seconds())
}
time.Sleep(5 * time.Second)
pods, err = c.Pods(ns).List(label, fields.Everything())
Expect(err).NotTo(HaveOccurred())
}
By("Ensuring each pod is running")
// Wait for the pods to enter the running state. Waiting loops until the pods
// are running so non-running pods cause a timeout for this test.
for _, pod := range pods.Items {
err = waitForPodRunning(c, pod.Name)
Expect(err).NotTo(HaveOccurred())
}
// Verify that something is listening.
By("Trying to dial each unique pod")
retryTimeout := 2 * time.Minute
retryInterval := 5 * time.Second
err = wait.Poll(retryInterval, retryTimeout, podResponseChecker{c, ns, label, name, true, pods}.checkAllResponses)
if err != nil {
Failf("Did not get expected responses within the timeout period of %.2f seconds.", retryTimeout.Seconds())
}
}
func podExists(c *client.Client, podNamespace string, podName string) wait.ConditionFunc {
return func() (bool, error) {
_, err := c.Pods(podNamespace).Get(podName)
return err == nil, nil
}
}
// Start a client pod using given VolumeSource (exported by startVolumeServer())
// and check that the pod sees the data from the server pod.
func testVolumeClient(client *client.Client, config VolumeTestConfig, volume api.VolumeSource, expectedContent string) {
By(fmt.Sprint("starting ", config.prefix, " client"))
podClient := client.Pods(config.namespace)
clientPod := &api.Pod{
TypeMeta: api.TypeMeta{
Kind: "Pod",
APIVersion: "v1",
},
ObjectMeta: api.ObjectMeta{
Name: config.prefix + "-client",
Labels: map[string]string{
"role": config.prefix + "-client",
},
},
Spec: api.PodSpec{
Containers: []api.Container{
{
Name: config.prefix + "-client",
Image: "qingyuan/nginx:1.7.9",
Ports: []api.ContainerPort{
{
Name: "web",
ContainerPort: 80,
Protocol: api.ProtocolTCP,
},
},
VolumeMounts: []api.VolumeMount{
{
Name: config.prefix + "-volume",
MountPath: "/usr/share/nginx/html",
},
},
},
},
Volumes: []api.Volume{
{
Name: config.prefix + "-volume",
VolumeSource: volume,
},
},
},
}
if _, err := podClient.Create(clientPod); err != nil {
Failf("Failed to create %s pod: %v", clientPod.Name, err)
}
expectNoError(waitForPodRunningInNamespace(client, clientPod.Name, config.namespace))
By("reading a web page from the client")
body, err := client.Get().
Namespace(config.namespace).
Prefix("proxy").
Resource("pods").
Name(clientPod.Name).
DoRaw()
expectNoError(err, "Cannot read web page: %v", err)
Logf("body: %v", string(body))
By("checking the page content")
Expect(body).To(ContainSubstring(expectedContent))
}
