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Merge pull request #82439 from smarterclayton/async_ns_cleanup
test/e2e: Delete test namespaces asynchronously
This commit is contained in:
Kubernetes Prow Robot
GitHub
commit
2d491ace8d
@ -88,7 +88,6 @@ go_library(
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"//test/e2e/system:go_default_library",
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"//test/utils:go_default_library",
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"//test/utils/image:go_default_library",
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"//vendor/github.com/davecgh/go-spew/spew:go_default_library",
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"//vendor/github.com/onsi/ginkgo:go_default_library",
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"//vendor/github.com/onsi/ginkgo/config:go_default_library",
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"//vendor/github.com/onsi/gomega:go_default_library",
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@ -303,11 +303,7 @@ func (f *Framework) AfterEach() {
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if TestContext.DeleteNamespace && (TestContext.DeleteNamespaceOnFailure || !ginkgo.CurrentGinkgoTestDescription().Failed) {
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for _, ns := range f.namespacesToDelete {
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ginkgo.By(fmt.Sprintf("Destroying namespace %q for this suite.", ns.Name))
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timeout := DefaultNamespaceDeletionTimeout
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if f.NamespaceDeletionTimeout != 0 {
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timeout = f.NamespaceDeletionTimeout
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}
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if err := deleteNS(f.ClientSet, f.DynamicClient, ns.Name, timeout); err != nil {
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if err := f.ClientSet.CoreV1().Namespaces().Delete(ns.Name, nil); err != nil {
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if !apierrors.IsNotFound(err) {
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nsDeletionErrors[ns.Name] = err
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} else {
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@ -40,7 +40,6 @@ import (
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"syscall"
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"time"
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"github.com/davecgh/go-spew/spew"
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"golang.org/x/net/websocket"
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"k8s.io/klog"
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@ -666,193 +665,6 @@ func CheckTestingNSDeletedExcept(c clientset.Interface, skip string) error {
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return fmt.Errorf("Waiting for terminating namespaces to be deleted timed out")
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}
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// deleteNS deletes the provided namespace, waits for it to be completely deleted, and then checks
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// whether there are any pods remaining in a non-terminating state.
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func deleteNS(c clientset.Interface, dynamicClient dynamic.Interface, namespace string, timeout time.Duration) error {
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startTime := time.Now()
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if err := c.CoreV1().Namespaces().Delete(namespace, nil); err != nil {
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return err
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}
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// wait for namespace to delete or timeout.
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var lastNamespace *v1.Namespace
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err := wait.PollImmediate(2*time.Second, timeout, func() (bool, error) {
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var err error
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lastNamespace, err = c.CoreV1().Namespaces().Get(namespace, metav1.GetOptions{})
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if err != nil {
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if apierrs.IsNotFound(err) {
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return true, nil
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}
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Logf("Error while waiting for namespace to be terminated: %v", err)
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return false, nil
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}
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return false, nil
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})
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// verify there is no more remaining content in the namespace
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remainingContent, cerr := hasRemainingContent(c, dynamicClient, namespace)
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if cerr != nil {
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return cerr
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}
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// if content remains, let's dump information about the namespace, and system for flake debugging.
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remainingPods := 0
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missingTimestamp := 0
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if remainingContent {
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// log information about namespace, and set of namespaces in api server to help flake detection
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logNamespace(c, namespace)
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logNamespaces(c, namespace)
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// if we can, check if there were pods remaining with no timestamp.
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remainingPods, missingTimestamp, _ = e2epod.CountRemainingPods(c, namespace)
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}
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// a timeout waiting for namespace deletion happened!
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if err != nil {
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// namespaces now have conditions that are useful for debugging generic resources and finalizers
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Logf("namespace did not cleanup: %s", spew.Sdump(lastNamespace))
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// some content remains in the namespace
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if remainingContent {
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// pods remain
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if remainingPods > 0 {
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if missingTimestamp != 0 {
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// pods remained, but were not undergoing deletion (namespace controller is probably culprit)
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return fmt.Errorf("namespace %v was not deleted with limit: %v, pods remaining: %v, pods missing deletion timestamp: %v", namespace, err, remainingPods, missingTimestamp)
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}
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// but they were all undergoing deletion (kubelet is probably culprit, check NodeLost)
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return fmt.Errorf("namespace %v was not deleted with limit: %v, pods remaining: %v", namespace, err, remainingPods)
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}
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// other content remains (namespace controller is probably screwed up)
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return fmt.Errorf("namespace %v was not deleted with limit: %v, namespaced content other than pods remain", namespace, err)
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}
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// no remaining content, but namespace was not deleted (namespace controller is probably wedged)
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return fmt.Errorf("namespace %v was not deleted with limit: %v, namespace is empty but is not yet removed", namespace, err)
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}
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Logf("namespace %v deletion completed in %s", namespace, time.Since(startTime))
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return nil
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}
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// logNamespaces logs the number of namespaces by phase
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// namespace is the namespace the test was operating against that failed to delete so it can be grepped in logs
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func logNamespaces(c clientset.Interface, namespace string) {
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namespaceList, err := c.CoreV1().Namespaces().List(metav1.ListOptions{})
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if err != nil {
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Logf("namespace: %v, unable to list namespaces: %v", namespace, err)
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return
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}
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numActive := 0
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numTerminating := 0
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for _, namespace := range namespaceList.Items {
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if namespace.Status.Phase == v1.NamespaceActive {
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numActive++
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} else {
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numTerminating++
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}
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}
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Logf("namespace: %v, total namespaces: %v, active: %v, terminating: %v", namespace, len(namespaceList.Items), numActive, numTerminating)
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}
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// logNamespace logs detail about a namespace
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func logNamespace(c clientset.Interface, namespace string) {
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ns, err := c.CoreV1().Namespaces().Get(namespace, metav1.GetOptions{})
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if err != nil {
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if apierrs.IsNotFound(err) {
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Logf("namespace: %v no longer exists", namespace)
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return
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}
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Logf("namespace: %v, unable to get namespace due to error: %v", namespace, err)
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return
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}
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Logf("namespace: %v, DeletionTimetamp: %v, Finalizers: %v, Phase: %v", ns.Name, ns.DeletionTimestamp, ns.Spec.Finalizers, ns.Status.Phase)
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}
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// isDynamicDiscoveryError returns true if the error is a group discovery error
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// only for groups expected to be created/deleted dynamically during e2e tests
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func isDynamicDiscoveryError(err error) bool {
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if !discovery.IsGroupDiscoveryFailedError(err) {
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return false
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}
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discoveryErr := err.(*discovery.ErrGroupDiscoveryFailed)
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for gv := range discoveryErr.Groups {
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switch gv.Group {
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case "mygroup.example.com":
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// custom_resource_definition
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// garbage_collector
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case "wardle.k8s.io":
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// aggregator
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case "metrics.k8s.io":
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// aggregated metrics server add-on, no persisted resources
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default:
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Logf("discovery error for unexpected group: %#v", gv)
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return false
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}
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}
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return true
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}
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// hasRemainingContent checks if there is remaining content in the namespace via API discovery
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func hasRemainingContent(c clientset.Interface, dynamicClient dynamic.Interface, namespace string) (bool, error) {
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// some tests generate their own framework.Client rather than the default
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// TODO: ensure every test call has a configured dynamicClient
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if dynamicClient == nil {
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return false, nil
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}
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// find out what content is supported on the server
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// Since extension apiserver is not always available, e.g. metrics server sometimes goes down,
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// add retry here.
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resources, err := waitForServerPreferredNamespacedResources(c.Discovery(), 30*time.Second)
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if err != nil {
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return false, err
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}
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resources = discovery.FilteredBy(discovery.SupportsAllVerbs{Verbs: []string{"list", "delete"}}, resources)
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groupVersionResources, err := discovery.GroupVersionResources(resources)
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if err != nil {
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return false, err
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}
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// TODO: temporary hack for https://github.com/kubernetes/kubernetes/issues/31798
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ignoredResources := sets.NewString("bindings")
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contentRemaining := false
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// dump how many of resource type is on the server in a log.
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for gvr := range groupVersionResources {
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// get a client for this group version...
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dynamicClient := dynamicClient.Resource(gvr).Namespace(namespace)
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if err != nil {
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// not all resource types support list, so some errors here are normal depending on the resource type.
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Logf("namespace: %s, unable to get client - gvr: %v, error: %v", namespace, gvr, err)
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continue
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}
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// get the api resource
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apiResource := metav1.APIResource{Name: gvr.Resource, Namespaced: true}
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if ignoredResources.Has(gvr.Resource) {
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Logf("namespace: %s, resource: %s, ignored listing per whitelist", namespace, apiResource.Name)
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continue
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}
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unstructuredList, err := dynamicClient.List(metav1.ListOptions{})
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if err != nil {
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// not all resources support list, so we ignore those
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if apierrs.IsMethodNotSupported(err) || apierrs.IsNotFound(err) || apierrs.IsForbidden(err) {
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continue
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}
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// skip unavailable servers
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if apierrs.IsServiceUnavailable(err) {
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continue
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}
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return false, err
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}
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if len(unstructuredList.Items) > 0 {
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Logf("namespace: %s, resource: %s, items remaining: %v", namespace, apiResource.Name, len(unstructuredList.Items))
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contentRemaining = true
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}
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}
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return contentRemaining, nil
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}
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// ContainerInitInvariant checks for an init containers are initialized and invariant on both older and newer.
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func ContainerInitInvariant(older, newer runtime.Object) error {
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oldPod := older.(*v1.Pod)
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@ -3051,28 +2863,6 @@ func DsFromManifest(url string) (*appsv1.DaemonSet, error) {
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return &ds, nil
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}
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// waitForServerPreferredNamespacedResources waits until server preferred namespaced resources could be successfully discovered.
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// TODO: Fix https://github.com/kubernetes/kubernetes/issues/55768 and remove the following retry.
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func waitForServerPreferredNamespacedResources(d discovery.DiscoveryInterface, timeout time.Duration) ([]*metav1.APIResourceList, error) {
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Logf("Waiting up to %v for server preferred namespaced resources to be successfully discovered", timeout)
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var resources []*metav1.APIResourceList
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if err := wait.PollImmediate(Poll, timeout, func() (bool, error) {
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var err error
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resources, err = d.ServerPreferredNamespacedResources()
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if err == nil || isDynamicDiscoveryError(err) {
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return true, nil
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}
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if !discovery.IsGroupDiscoveryFailedError(err) {
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return false, err
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}
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Logf("Error discoverying server preferred namespaced resources: %v, retrying in %v.", err, Poll)
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return false, nil
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}); err != nil {
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return nil, err
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}
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return resources, nil
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}
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// WaitForPersistentVolumeClaimDeleted waits for a PersistentVolumeClaim to be removed from the system until timeout occurs, whichever comes first.
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func WaitForPersistentVolumeClaimDeleted(c clientset.Interface, ns string, pvcName string, Poll, timeout time.Duration) error {
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Logf("Waiting up to %v for PersistentVolumeClaim %s to be removed", timeout, pvcName)
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