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Merge pull request #124205 from mkarrmann/wait-for-pods-e2e-cleanup-111092

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chore/refactor(e2e tests): Solidify Contract for and Cleanup WaitForPodsRunningReady
This commit is contained in:
Kubernetes Prow Robot 2024-04-22 01:24:24 -07:00 committed by GitHub
commit cb3bd5bc41
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10 changed files with 114 additions and 44 deletions
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6
test/e2e/cloud/gcp/node_lease.go
View File

@ -38,7 +38,7 @@ import (
var _ = SIGDescribe(framework.WithDisruptive(), "NodeLease", func() {
f := framework.NewDefaultFramework("node-lease-test")
f.NamespacePodSecurityLevel = admissionapi.LevelPrivileged
var systemPodsNo int32
var systemPodsNo int
var c clientset.Interface
var ns string
var group string
@ -49,7 +49,7 @@ var _ = SIGDescribe(framework.WithDisruptive(), "NodeLease", func() {
ns = f.Namespace.Name
systemPods, err := e2epod.GetPodsInNamespace(ctx, c, ns, map[string]string{})
framework.ExpectNoError(err)
systemPodsNo = int32(len(systemPods))
systemPodsNo = len(systemPods)
if strings.Contains(framework.TestContext.CloudConfig.NodeInstanceGroup, ",") {
framework.Failf("Test dose not support cluster setup with more than one MIG: %s", framework.TestContext.CloudConfig.NodeInstanceGroup)
} else {
@ -98,7 +98,7 @@ var _ = SIGDescribe(framework.WithDisruptive(), "NodeLease", func() {
// Many e2e tests assume that the cluster is fully healthy before they start. Wait until
// the cluster is restored to health.
ginkgo.By("waiting for system pods to successfully restart")
err := e2epod.WaitForPodsRunningReady(ctx, c, metav1.NamespaceSystem, systemPodsNo, 0, framework.PodReadyBeforeTimeout)
err := e2epod.WaitForPodsRunningReady(ctx, c, metav1.NamespaceSystem, systemPodsNo, framework.PodReadyBeforeTimeout)
framework.ExpectNoError(err)
})

6
test/e2e/cloud/gcp/resize_nodes.go
View File

@ -47,7 +47,7 @@ func resizeRC(ctx context.Context, c clientset.Interface, ns, name string, repli
var _ = SIGDescribe("Nodes", framework.WithDisruptive(), func() {
f := framework.NewDefaultFramework("resize-nodes")
f.NamespacePodSecurityLevel = admissionapi.LevelPrivileged
var systemPodsNo int32
var systemPodsNo int
var c clientset.Interface
var ns string
var group string
@ -57,7 +57,7 @@ var _ = SIGDescribe("Nodes", framework.WithDisruptive(), func() {
ns = f.Namespace.Name
systemPods, err := e2epod.GetPodsInNamespace(ctx, c, ns, map[string]string{})
framework.ExpectNoError(err)
systemPodsNo = int32(len(systemPods))
systemPodsNo = len(systemPods)
if strings.Contains(framework.TestContext.CloudConfig.NodeInstanceGroup, ",") {
framework.Failf("Test dose not support cluster setup with more than one MIG: %s", framework.TestContext.CloudConfig.NodeInstanceGroup)
} else {
@ -99,7 +99,7 @@ var _ = SIGDescribe("Nodes", framework.WithDisruptive(), func() {
// Many e2e tests assume that the cluster is fully healthy before they start. Wait until
// the cluster is restored to health.
ginkgo.By("waiting for system pods to successfully restart")
err := e2epod.WaitForPodsRunningReady(ctx, c, metav1.NamespaceSystem, systemPodsNo, 0, framework.PodReadyBeforeTimeout)
err := e2epod.WaitForPodsRunningReady(ctx, c, metav1.NamespaceSystem, systemPodsNo, framework.PodReadyBeforeTimeout)
framework.ExpectNoError(err)
})
})

8
test/e2e/common/node/container_probe.go
View File

@ -612,7 +612,7 @@ done
})
// verify pods are running and ready
err := e2epod.WaitForPodsRunningReady(ctx, f.ClientSet, f.Namespace.Name, 1, 0, f.Timeouts.PodStart)
err := e2epod.WaitForPodsRunningReady(ctx, f.ClientSet, f.Namespace.Name, 1, f.Timeouts.PodStart)
framework.ExpectNoError(err)
// Shutdown pod. Readiness should change to false
@ -694,7 +694,7 @@ done
})
// verify pods are running and ready
err := e2epod.WaitForPodsRunningReady(ctx, f.ClientSet, f.Namespace.Name, 1, 0, f.Timeouts.PodStart)
err := e2epod.WaitForPodsRunningReady(ctx, f.ClientSet, f.Namespace.Name, 1, f.Timeouts.PodStart)
framework.ExpectNoError(err)
// Shutdown pod. Readiness should change to false
@ -1359,7 +1359,7 @@ done
})
// verify pods are running and ready
err := e2epod.WaitForPodsRunningReady(ctx, f.ClientSet, f.Namespace.Name, 1, 0, f.Timeouts.PodStart)
err := e2epod.WaitForPodsRunningReady(ctx, f.ClientSet, f.Namespace.Name, 1, f.Timeouts.PodStart)
framework.ExpectNoError(err)
// Shutdown pod. Readiness should change to false
@ -1452,7 +1452,7 @@ done
})
// verify pods are running and ready
err := e2epod.WaitForPodsRunningReady(ctx, f.ClientSet, f.Namespace.Name, 1, 0, f.Timeouts.PodStart)
err := e2epod.WaitForPodsRunningReady(ctx, f.ClientSet, f.Namespace.Name, 1, f.Timeouts.PodStart)
framework.ExpectNoError(err)
// Shutdown pod. Readiness should change to false

2
test/e2e/common/node/pods.go
View File

@ -873,7 +873,7 @@ var _ = SIGDescribe("Pods", func() {
// wait as required for all 3 pods to be running
ginkgo.By("waiting for all 3 pods to be running")
err := e2epod.WaitForPodsRunningReady(ctx, f.ClientSet, f.Namespace.Name, 3, 0, f.Timeouts.PodStart)
err := e2epod.WaitForPodsRunningReady(ctx, f.ClientSet, f.Namespace.Name, 3, f.Timeouts.PodStart)
framework.ExpectNoError(err, "3 pods not found running.")
// delete Collection of pods with a label in the current namespace

2
test/e2e/e2e.go
View File

@ -226,7 +226,7 @@ func setupSuite(ctx context.Context) {
// #41007. To avoid those pods preventing the whole test runs (and just
// wasting the whole run), we allow for some not-ready pods (with the
// number equal to the number of allowed not-ready nodes).
if err := e2epod.WaitForPodsRunningReady(ctx, c, metav1.NamespaceSystem, int32(framework.TestContext.MinStartupPods), int32(framework.TestContext.AllowedNotReadyNodes), timeouts.SystemPodsStartup); err != nil {
if err := e2epod.WaitForAlmostAllPodsReady(ctx, c, metav1.NamespaceSystem, framework.TestContext.MinStartupPods, framework.TestContext.AllowedNotReadyNodes, timeouts.SystemPodsStartup); err != nil {
e2edebug.DumpAllNamespaceInfo(ctx, c, metav1.NamespaceSystem)
e2ekubectl.LogFailedContainers(ctx, c, metav1.NamespaceSystem, framework.Logf)
framework.Failf("Error waiting for all pods to be running and ready: %v", err)

119
test/e2e/framework/pod/wait.go
View File

@ -99,17 +99,22 @@ func BeInPhase(phase v1.PodPhase) types.GomegaMatcher {
}).WithTemplate("Expected Pod {{.To}} be in {{format .Data}}\nGot instead:\n{{.FormattedActual}}").WithTemplateData(phase)
}
// WaitForPodsRunningReady waits up to timeout to ensure that all pods in
// namespace ns are either running and ready, or failed but controlled by a
// controller. Also, it ensures that at least minPods are running and
// ready. It has separate behavior from other 'wait for' pods functions in
// that it requests the list of pods on every iteration. This is useful, for
// example, in cluster startup, because the number of pods increases while
// waiting. All pods that are in SUCCESS state are not counted.
// WaitForAlmostAllReady waits up to timeout for the following conditions:
// 1. At least minPods Pods in Namespace ns are Running and Ready
// 2. All Pods in Namespace ns are either Ready or Succeeded
// 3. All Pods part of a ReplicaSet or ReplicationController in Namespace ns are Ready
//
// After the timeout has elapsed, an error is returned if the number of Pods in a Pending Phase
// is greater than allowedNotReadyPods.
//
// It is generally recommended to use WaitForPodsRunningReady instead of this function
// whenever possible, because its behavior is more intuitive. Similar to WaitForPodsRunningReady,
// this function requests the list of pods on every iteration, making it useful for situations
// where the set of Pods is likely changing, such as during cluster startup.
//
// If minPods or allowedNotReadyPods are -1, this method returns immediately
// without waiting.
func WaitForPodsRunningReady(ctx context.Context, c clientset.Interface, ns string, minPods, allowedNotReadyPods int32, timeout time.Duration) error {
func WaitForAlmostAllPodsReady(ctx context.Context, c clientset.Interface, ns string, minPods, allowedNotReadyPods int, timeout time.Duration) error {
if minPods == -1 || allowedNotReadyPods == -1 {
return nil
}
@ -126,14 +131,12 @@ func WaitForPodsRunningReady(ctx context.Context, c clientset.Interface, ns stri
Pods []v1.Pod
}
// notReady is -1 for any failure other than a timeout.
// Otherwise it is the number of pods that we were still
// waiting for.
notReady := int32(-1)
nOk := 0
badPods := []v1.Pod{}
otherPods := []v1.Pod{}
succeededPods := []string{}
err := framework.Gomega().Eventually(ctx, framework.HandleRetry(func(ctx context.Context) (*state, error) {
// Reset notReady at the start of a poll attempt.
notReady = -1
rcList, err := c.CoreV1().ReplicationControllers(ns).List(ctx, metav1.ListOptions{})
if err != nil {
@ -163,11 +166,10 @@ func WaitForPodsRunningReady(ctx context.Context, c clientset.Interface, ns stri
replicaOk += rs.Status.ReadyReplicas
}
nOk := int32(0)
notReady = int32(0)
failedPods := []v1.Pod{}
otherPods := []v1.Pod{}
succeededPods := []string{}
nOk = 0
badPods = []v1.Pod{}
otherPods = []v1.Pod{}
succeededPods = []string{}
for _, pod := range s.Pods {
res, err := testutils.PodRunningReady(&pod)
switch {
@ -179,14 +181,13 @@ func WaitForPodsRunningReady(ctx context.Context, c clientset.Interface, ns stri
case pod.Status.Phase == v1.PodFailed:
// ignore failed pods that are controlled by some controller
if metav1.GetControllerOf(&pod) == nil {
failedPods = append(failedPods, pod)
badPods = append(badPods, pod)
}
default:
notReady++
otherPods = append(otherPods, pod)
}
}
done := replicaOk == replicas && nOk >= minPods && (len(failedPods)+len(otherPods)) == 0
done := replicaOk == replicas && nOk >= minPods && (len(badPods)+len(otherPods)) == 0
if done {
return nil, nil
}
@ -200,8 +201,8 @@ func WaitForPodsRunningReady(ctx context.Context, c clientset.Interface, ns stri
if len(succeededPods) > 0 {
buffer.WriteString(fmt.Sprintf("Pods that completed successfully:\n%s", format.Object(succeededPods, 1)))
}
if len(failedPods) > 0 {
buffer.WriteString(fmt.Sprintf("Pods that failed and were not controlled by some controller:\n%s", format.Object(failedPods, 1)))
if len(badPods) > 0 {
buffer.WriteString(fmt.Sprintf("Pods that failed and were not controlled by some controller:\n%s", format.Object(badPods, 1)))
}
if len(otherPods) > 0 {
buffer.WriteString(fmt.Sprintf("Pods that were neither completed nor running:\n%s", format.Object(otherPods, 1)))
@ -211,13 +212,79 @@ func WaitForPodsRunningReady(ctx context.Context, c clientset.Interface, ns stri
}))
// An error might not be fatal.
if err != nil && notReady >= 0 && notReady <= allowedNotReadyPods {
framework.Logf("Number of not-ready pods (%d) is below the allowed threshold (%d).", notReady, allowedNotReadyPods)
if len(otherPods) <= allowedNotReadyPods {
return nil
}
return err
}
// WaitForPodsRunningReady waits up to timeout for the following conditions:
// 1. At least minPods Pods in Namespace ns are Running and Ready
// 2. No Pods in Namespace ns are Failed and not owned by a controller or Pending
//
// An error is returned if either of these conditions are not met within the timeout.
//
// It has separate behavior from other 'wait for' pods functions in
// that it requests the list of pods on every iteration. This is useful, for
// example, in cluster startup, because the number of pods increases while
// waiting. All pods that are in SUCCESS state are not counted.
func WaitForPodsRunningReady(ctx context.Context, c clientset.Interface, ns string, minPods int, timeout time.Duration) error {
return framework.Gomega().Eventually(ctx, framework.HandleRetry(func(ctx context.Context) ([]v1.Pod, error) {
podList, err := c.CoreV1().Pods(ns).List(ctx, metav1.ListOptions{})
if err != nil {
return nil, fmt.Errorf("listing pods in namespace %s: %w", ns, err)
}
return podList.Items, nil
})).WithTimeout(timeout).Should(framework.MakeMatcher(func(pods []v1.Pod) (func() string, error) {
nOk := 0
badPods := []v1.Pod{}
otherPods := []v1.Pod{}
succeededPods := []string{}
for _, pod := range pods {
res, err := testutils.PodRunningReady(&pod)
switch {
case res && err == nil:
nOk++
case pod.Status.Phase == v1.PodSucceeded:
// ignore succeeded pods
succeededPods = append(succeededPods, pod.Name)
case pod.Status.Phase == v1.PodFailed:
// ignore failed pods that are controlled by some controller
if metav1.GetControllerOf(&pod) == nil {
badPods = append(badPods, pod)
}
default:
otherPods = append(otherPods, pod)
}
}
if nOk >= minPods && len(badPods)+len(otherPods) == 0 {
return nil, nil
}
// Delayed formatting of a failure message.
return func() string {
var buffer strings.Builder
buffer.WriteString(fmt.Sprintf("Expected all pods (need at least %d) in namespace %q to be running and ready \n", minPods, ns))
buffer.WriteString(fmt.Sprintf("%d / %d pods were running and ready.\n", nOk, len(pods)))
if len(succeededPods) > 0 {
buffer.WriteString(fmt.Sprintf("Pods that completed successfully:\n%s", format.Object(succeededPods, 1)))
}
if len(badPods) > 0 {
buffer.WriteString(fmt.Sprintf("Pods that failed and were not controlled by some controller:\n%s", format.Object(badPods, 1)))
}
if len(otherPods) > 0 {
buffer.WriteString(fmt.Sprintf("Pods that were neither completed nor running:\n%s", format.Object(otherPods, 1)))
}
return buffer.String()
}, nil
}))
}
// WaitForPodCondition waits a pods to be matched to the given condition.
// The condition callback may use gomega.StopTrying to abort early.
func WaitForPodCondition(ctx context.Context, c clientset.Interface, ns, podName, conditionDesc string, timeout time.Duration, condition podCondition) error {

2
test/e2e/scheduling/priorities.go
View File

@ -109,7 +109,7 @@ var _ = SIGDescribe("SchedulerPriorities", framework.WithSerial(), func() {
err = framework.CheckTestingNSDeletedExcept(ctx, cs, ns)
framework.ExpectNoError(err)
err = e2epod.WaitForPodsRunningReady(ctx, cs, metav1.NamespaceSystem, int32(systemPodsNo), 0, framework.PodReadyBeforeTimeout)
err = e2epod.WaitForPodsRunningReady(ctx, cs, metav1.NamespaceSystem, systemPodsNo, framework.PodReadyBeforeTimeout)
framework.ExpectNoError(err)
// skip if the most utilized node has less than the cri-o minMemLimit available

6
test/e2e/windows/host_process.go
View File

@ -657,7 +657,8 @@ var _ = sigDescribe(feature.WindowsHostProcessContainers, "[MinimumKubeletVersio
ginkgo.By("Waiting for the pod to start running")
timeout := 3 * time.Minute
e2epod.WaitForPodsRunningReady(ctx, f.ClientSet, f.Namespace.Name, 1, 0, timeout)
err = e2epod.WaitForPodsRunningReady(ctx, f.ClientSet, f.Namespace.Name, 1, timeout)
framework.ExpectNoError(err)
ginkgo.By("Getting container stats for pod")
statsChecked := false
@ -711,7 +712,8 @@ var _ = sigDescribe(feature.WindowsHostProcessContainers, "[MinimumKubeletVersio
pc.Create(ctx, pod)
ginkgo.By("Waiting for pod to run")
e2epod.WaitForPodsRunningReady(ctx, f.ClientSet, f.Namespace.Name, 1, 0, 3*time.Minute)
err := e2epod.WaitForPodsRunningReady(ctx, f.ClientSet, f.Namespace.Name, 1, 3*time.Minute)
framework.ExpectNoError(err)
ginkgo.By("Waiting for 60 seconds")
// We wait an additional 60 seconds after the pod is Running because the

3
test/e2e/windows/hyperv.go
View File

@ -95,7 +95,8 @@ var _ = sigDescribe(feature.WindowsHyperVContainers, "HyperV containers", skipUn
pc.Create(ctx, hypervPod)
ginkgo.By("waiting for the pod to be running")
timeout := 3 * time.Minute
e2epod.WaitForPodsRunningReady(ctx, f.ClientSet, f.Namespace.Name, 1, 0, timeout)
err = e2epod.WaitForPodsRunningReady(ctx, f.ClientSet, f.Namespace.Name, 1, timeout)
framework.ExpectNoError(err)
ginkgo.By("creating a host process container in another pod to verify the pod is running hyperv isolated containers")

4
test/e2e/windows/kubelet_stats.go
View File

@ -60,7 +60,7 @@ var _ = sigDescribe(feature.Windows, "Kubelet-Stats", framework.WithSerial(), sk
ginkgo.By("Waiting up to 3 minutes for pods to be running")
timeout := 3 * time.Minute
err = e2epod.WaitForPodsRunningReady(ctx, f.ClientSet, f.Namespace.Name, 10, 0, timeout)
err = e2epod.WaitForPodsRunningReady(ctx, f.ClientSet, f.Namespace.Name, 10, timeout)
framework.ExpectNoError(err)
ginkgo.By("Getting kubelet stats 5 times and checking average duration")
@ -152,7 +152,7 @@ var _ = sigDescribe(feature.Windows, "Kubelet-Stats", skipUnlessWindows(func() {
ginkgo.By("Waiting up to 3 minutes for pods to be running")
timeout := 3 * time.Minute
err = e2epod.WaitForPodsRunningReady(ctx, f.ClientSet, f.Namespace.Name, 3, 0, timeout)
err = e2epod.WaitForPodsRunningReady(ctx, f.ClientSet, f.Namespace.Name, 3, timeout)
framework.ExpectNoError(err)
ginkgo.By("Getting kubelet stats 1 time")