})
AfterEach(func() {
if CurrentGinkgoTestDescription().Failed {
dumpDebugInfo(c, ns)
}
framework.Logf("Deleting all statefulset in ns %v", ns)
deleteAllStatefulSets(c, ns)
})
It("should provide basic identity", func() {
By("Creating statefulset " + psName + " in namespace " + ns)
*(ps.Spec.Replicas) = 3
setInitializedAnnotation(ps, "false")
_, err := c.Apps().StatefulSets(ns).Create(ps)
Expect(err).NotTo(HaveOccurred())
pst := statefulSetTester{c: c}
By("Saturating stateful set " + ps.Name)
pst.saturate(ps)
By("Verifying statefulset mounted data directory is usable")
framework.ExpectNoError(pst.checkMount(ps, "/data"))
By("Verifying statefulset provides a stable hostname for each pod")
framework.ExpectNoError(pst.checkHostname(ps))
cmd := "echo $(hostname) > /data/hostname; sync;"
By("Running " + cmd + " in all stateful pods")
func deleteAllStatefulSets(c clientset.Interface, ns string) {
pst := &statefulSetTester{c: c}
psList, err := c.Apps().StatefulSets(ns).List(v1.ListOptions{LabelSelector: labels.Everything().String()})
framework.ExpectNoError(err)
// Scale down each statefulset, then delete it completely.
// Deleting a pvc without doing this will leak volumes, #25101.
errList := []string{}
for _, ps := range psList.Items {
framework.Logf("Scaling statefulset %v to 0", ps.Name)
if err := pst.scale(&ps, 0); err != nil {
errList = append(errList, fmt.Sprintf("%v", err))
}
pst.waitForStatus(&ps, 0)
framework.Logf("Deleting statefulset %v", ps.Name)
if err := c.Apps().StatefulSets(ps.Namespace).Delete(ps.Name, nil); err != nil {
errList = append(errList, fmt.Sprintf("%v", err))
}
}
// pvs are global, so we need to wait for the exact ones bound to the statefulset pvcs.
pvNames := sets.NewString()
// TODO: Don't assume all pvcs in the ns belong to a statefulset
pvcPollErr := wait.PollImmediate(statefulsetPoll, statefulsetTimeout, func() (bool, error) {
pvcList, err := c.Core().PersistentVolumeClaims(ns).List(v1.ListOptions{LabelSelector: labels.Everything().String()})
if err != nil {
framework.Logf("WARNING: Failed to list pvcs, retrying %v", err)
return false, nil
}
for _, pvc := range pvcList.Items {
pvNames.Insert(pvc.Spec.VolumeName)
// TODO: Double check that there are no pods referencing the pvc
framework.Logf("Deleting pvc: %v with volume %v", pvc.Name, pvc.Spec.VolumeName)
if err := c.Core().PersistentVolumeClaims(ns).Delete(pvc.Name, nil); err != nil {
return false, nil
}
}
return true, nil
})
if pvcPollErr != nil {
errList = append(errList, fmt.Sprintf("Timeout waiting for pvc deletion."))
}
pollErr := wait.PollImmediate(statefulsetPoll, statefulsetTimeout, func() (bool, error) {
pvList, err := c.Core().PersistentVolumes().List(v1.ListOptions{LabelSelector: labels.Everything().String()})
if err != nil {
framework.Logf("WARNING: Failed to list pvs, retrying %v", err)
return false, nil
}
waitingFor := []string{}
for _, pv := range pvList.Items {
if pvNames.Has(pv.Name) {
waitingFor = append(waitingFor, fmt.Sprintf("%v: %+v", pv.Name, pv.Status))
}
}
if len(waitingFor) == 0 {
return true, nil
}
framework.Logf("Still waiting for pvs of statefulset to disappear:\n%v", strings.Join(waitingFor, "\n"))
return false, nil
})
if pollErr != nil {
errList = append(errList, fmt.Sprintf("Timeout waiting for pv provisioner to delete pvs, this might mean the test leaked pvs."))
}
if len(errList) != 0 {
framework.ExpectNoError(fmt.Errorf("%v", strings.Join(errList, "\n")))
}
}
func verifyExpectedRcsExistAndGetExpectedPods(c clientset.Interface) ([]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
// situation 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 {
selector := labels.Set{"k8s-app": rcLabel}.AsSelector()
options := v1.ListOptions{LabelSelector: selector.String()}
deploymentList, err := c.Extensions().Deployments(api.NamespaceSystem).List(options)
if err != nil {
return nil, err
}
rcList, err := c.Core().ReplicationControllers(api.NamespaceSystem).List(options)
if err != nil {
return nil, err
}
psList, err := c.Apps().StatefulSets(api.NamespaceSystem).List(options)
if err != nil {
return nil, err
}
if (len(rcList.Items) + len(deploymentList.Items) + len(psList.Items)) != 1 {
return nil, fmt.Errorf("expected to find one replica for RC or deployment with label %s but got %d",
rcLabel, len(rcList.Items))
}
// Check all the replication controllers.
for _, rc := range rcList.Items {
selector := labels.Set(rc.Spec.Selector).AsSelector()
options := v1.ListOptions{LabelSelector: selector.String()}
podList, err := c.Core().Pods(api.NamespaceSystem).List(options)
if err != nil {
return nil, err
}
for _, pod := range podList.Items {
if pod.DeletionTimestamp != nil {
continue
}
expectedPods = append(expectedPods, string(pod.UID))
}
}
// Do the same for all deployments.
for _, rc := range deploymentList.Items {
selector := labels.Set(rc.Spec.Selector.MatchLabels).AsSelector()
options := v1.ListOptions{LabelSelector: selector.String()}
podList, err := c.Core().Pods(api.NamespaceSystem).List(options)
if err != nil {
return nil, err
}
for _, pod := range podList.Items {
if pod.DeletionTimestamp != nil {
continue
}
expectedPods = append(expectedPods, string(pod.UID))
}
}
// And for pet sets.
for _, ps := range psList.Items {
selector := labels.Set(ps.Spec.Selector.MatchLabels).AsSelector()
options := v1.ListOptions{LabelSelector: selector.String()}
podList, err := c.Core().Pods(api.NamespaceSystem).List(options)
if err != nil {
return nil, err
}
for _, pod := range podList.Items {
if pod.DeletionTimestamp != nil {
continue
}
expectedPods = append(expectedPods, string(pod.UID))
}
}
}
return expectedPods, nil
}