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e2e: node: devicemanager: update tests
Fix e2e device manager tests. Most notably, the workload pods needs to survive a kubelet restart. Update tests to reflect that. Signed-off-by: Francesco Romani <fromani@redhat.com>
This commit is contained in:
Francesco Romani
parent
3bcf4220ec
commit
b926aba268
@ -721,11 +721,14 @@ func hasFailed(hasFailed bool) types.GomegaMatcher {
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}).WithTemplate("expected Pod failed {{.To}} be in {{format .Data}}\nGot instead:\n{{.FormattedActual}}").WithTemplateData(hasFailed)
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}
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func getPod(ctx context.Context, f *framework.Framework, podName string) (bool, error) {
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func getPodByName(ctx context.Context, f *framework.Framework, podName string) (*v1.Pod, error) {
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return e2epod.NewPodClient(f).Get(ctx, podName, metav1.GetOptions{})
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}
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pod, err := e2epod.NewPodClient(f).Get(ctx, podName, metav1.GetOptions{})
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func getPod(ctx context.Context, f *framework.Framework, podName string) (bool, error) {
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pod, err := getPodByName(ctx, f, podName)
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if err != nil {
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return false, fmt.Errorf("expected node to get pod=%q got err=%q", pod.Name, err)
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return false, err
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}
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expectedStatusReason := "UnexpectedAdmissionError"
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@ -28,11 +28,14 @@ import (
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"github.com/onsi/ginkgo/v2"
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"github.com/onsi/gomega"
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"github.com/onsi/gomega/gcustom"
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"github.com/onsi/gomega/types"
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appsv1 "k8s.io/api/apps/v1"
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v1 "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/runtime/serializer"
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k8stypes "k8s.io/apimachinery/pkg/types"
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"k8s.io/apimachinery/pkg/util/sets"
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runtimeapi "k8s.io/cri-api/pkg/apis/runtime/v1"
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"k8s.io/klog/v2"
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@ -42,6 +45,7 @@ import (
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"k8s.io/apimachinery/pkg/api/resource"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/util/uuid"
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"k8s.io/kubectl/pkg/util/podutils"
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kubeletpodresourcesv1 "k8s.io/kubelet/pkg/apis/podresources/v1"
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kubeletpodresourcesv1alpha1 "k8s.io/kubelet/pkg/apis/podresources/v1alpha1"
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"k8s.io/kubernetes/test/e2e/framework"
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@ -239,7 +243,7 @@ func testDevicePlugin(f *framework.Framework, pluginSockDir string) {
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// simulate container restart, while all other involved components (kubelet, device plugin) stay stable. To do so, in the container
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// entry point we sleep for a limited and short period of time. The device assignment should be kept and be stable across the container
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// restarts. For the sake of brevity we however check just the fist restart.
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ginkgo.It("Keeps device plugin assignments across pod restarts (no kubelet restart, device plugin re-registration)", func(ctx context.Context) {
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ginkgo.It("Keeps device plugin assignments across pod restarts (no kubelet restart, no device plugin restart)", func(ctx context.Context) {
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podRECMD := fmt.Sprintf("devs=$(ls /tmp/ | egrep '^Dev-[0-9]+$') && echo stub devices: $devs && sleep %s", sleepIntervalWithRestart)
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pod1 := e2epod.NewPodClient(f).CreateSync(ctx, makeBusyboxPod(SampleDeviceResourceName, podRECMD))
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deviceIDRE := "stub devices: (Dev-[0-9]+)"
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@ -291,10 +295,11 @@ func testDevicePlugin(f *framework.Framework, pluginSockDir string) {
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framework.ExpectNoError(err, "inconsistent device assignment after extra container restart - pod2")
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})
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// simulate kubelet restart, *but not* device plugin re-registration, while the pod and the container stays running.
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// simulate kubelet restart. A compliant device plugin is expected to re-register, while the pod and the container stays running.
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// The flow with buggy or slow device plugin is deferred to another test.
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// The device assignment should be kept and be stable across the kubelet restart, because it's the kubelet which performs the device allocation,
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// and both the device plugin and the actual consumer (container) are stable.
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ginkgo.It("Keeps device plugin assignments across kubelet restarts (no pod restart, no device plugin re-registration)", func(ctx context.Context) {
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ginkgo.It("Keeps device plugin assignments across kubelet restarts (no pod restart, no device plugin restart)", func(ctx context.Context) {
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podRECMD := fmt.Sprintf("devs=$(ls /tmp/ | egrep '^Dev-[0-9]+$') && echo stub devices: $devs && sleep %s", sleepIntervalForever)
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pod1 := e2epod.NewPodClient(f).CreateSync(ctx, makeBusyboxPod(SampleDeviceResourceName, podRECMD))
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deviceIDRE := "stub devices: (Dev-[0-9]+)"
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@ -304,6 +309,7 @@ func testDevicePlugin(f *framework.Framework, pluginSockDir string) {
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pod1, err = e2epod.NewPodClient(f).Get(ctx, pod1.Name, metav1.GetOptions{})
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framework.ExpectNoError(err)
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framework.Logf("testing pod: UID=%s namespace=%s name=%s ready=%v", pod1.UID, pod1.Namespace, pod1.Name, podutils.IsPodReady(pod1))
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ginkgo.By("Restarting Kubelet")
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restartKubelet(true)
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@ -319,12 +325,16 @@ func testDevicePlugin(f *framework.Framework, pluginSockDir string) {
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CountSampleDeviceAllocatable(node) == expectedSampleDevsAmount
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}, 30*time.Second, framework.Poll).Should(gomega.BeTrue())
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ginkgo.By("Waiting for the pod to fail with admission error as device plugin hasn't re-registered yet")
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gomega.Eventually(ctx, getPod).
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ginkgo.By("Checking the same instance of the pod is still running")
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gomega.Eventually(ctx, getPodByName).
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WithArguments(f, pod1.Name).
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WithTimeout(time.Minute).
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Should(HaveFailedWithAdmissionError(),
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"the pod succeeded to start, when it should fail with the admission error")
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Should(BeTheSamePodStillRunning(pod1),
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"the same pod instance not running across kubelet restarts, workload should not be perturbed by kubelet restarts")
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pod1, err = e2epod.NewPodClient(f).Get(ctx, pod1.Name, metav1.GetOptions{})
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framework.ExpectNoError(err)
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framework.Logf("testing pod: UID=%s namespace=%s name=%s ready=%v", pod1.UID, pod1.Namespace, pod1.Name, podutils.IsPodReady(pod1))
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// crosscheck from the device assignment is preserved and stable from perspective of the kubelet.
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// note we don't check again the logs of the container: the check is done at startup, the container
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@ -340,10 +350,10 @@ func testDevicePlugin(f *framework.Framework, pluginSockDir string) {
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framework.ExpectNoError(err, "inconsistent device assignment after pod restart")
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})
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// simulate kubelet and container restart, *but not* device plugin re-registration.
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// simulate kubelet and container restart, *but not* device plugin restart.
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// The device assignment should be kept and be stable across the kubelet and container restart, because it's the kubelet which
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// performs the device allocation, and both the device plugin is stable.
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ginkgo.It("Keeps device plugin assignments across pod and kubelet restarts (no device plugin re-registration)", func(ctx context.Context) {
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ginkgo.It("Keeps device plugin assignments across pod and kubelet restarts (no device plugin restart)", func(ctx context.Context) {
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podRECMD := fmt.Sprintf("devs=$(ls /tmp/ | egrep '^Dev-[0-9]+$') && echo stub devices: $devs && sleep %s", sleepIntervalWithRestart)
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pod1 := e2epod.NewPodClient(f).CreateSync(ctx, makeBusyboxPod(SampleDeviceResourceName, podRECMD))
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deviceIDRE := "stub devices: (Dev-[0-9]+)"
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@ -372,18 +382,28 @@ func testDevicePlugin(f *framework.Framework, pluginSockDir string) {
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ginkgo.By("Wait for node to be ready again")
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e2enode.WaitForAllNodesSchedulable(ctx, f.ClientSet, 5*time.Minute)
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ginkgo.By("Waiting for the pod to fail with admission error as device plugin hasn't re-registered yet")
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gomega.Eventually(ctx, getPod).
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ginkgo.By("Checking an instance of the pod is running")
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gomega.Eventually(ctx, getPodByName).
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WithArguments(f, pod1.Name).
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WithTimeout(time.Minute).
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Should(HaveFailedWithAdmissionError(),
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"the pod succeeded to start, when it should fail with the admission error")
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Should(gomega.And(
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BeAPodInPhase(v1.PodRunning),
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BeAPodReady(),
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),
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"the pod should still be running, the workload should not be perturbed by kubelet restarts")
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// crosscheck from the device assignment is preserved and stable from perspective of the kubelet.
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// note we don't check again the logs of the container: the check is done at startup, the container
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// never restarted (runs "forever" from this test timescale perspective) hence re-doing this check
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// is useless.
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ginkgo.By("Verifying the device assignment after kubelet restart using podresources API")
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ginkgo.By("Verifying the device assignment after pod and kubelet restart using container logs")
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var devID1Restarted string
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gomega.Eventually(ctx, func() string {
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devID1Restarted, err = parseLog(ctx, f, pod1.Name, pod1.Name, deviceIDRE)
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if err != nil {
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framework.Logf("error getting logds for pod %q: %v", pod1.Name, err)
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return ""
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}
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return devID1Restarted
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}, 30*time.Second, framework.Poll).Should(gomega.Equal(devID1), "pod %s reports a different device after restarts: %s (expected %s)", pod1.Name, devID1Restarted, devID1)
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ginkgo.By("Verifying the device assignment after pod and kubelet restart using podresources API")
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gomega.Eventually(ctx, func() error {
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v1PodResources, err = getV1NodeDevices(ctx)
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return err
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@ -397,8 +417,7 @@ func testDevicePlugin(f *framework.Framework, pluginSockDir string) {
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// After the device plugin has re-registered, the list healthy devices is repopulated based on the devices discovered.
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// Once Pod2 is running we determine the device that was allocated it. As long as the device allocation succeeds the
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// test should pass.
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ginkgo.It("Keeps device plugin assignments after the device plugin has been re-registered (no kubelet, pod restart)", func(ctx context.Context) {
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ginkgo.It("Keeps device plugin assignments after the device plugin has restarted (no kubelet restart, pod restart)", func(ctx context.Context) {
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podRECMD := fmt.Sprintf("devs=$(ls /tmp/ | egrep '^Dev-[0-9]+$') && echo stub devices: $devs && sleep %s", sleepIntervalForever)
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pod1 := e2epod.NewPodClient(f).CreateSync(ctx, makeBusyboxPod(SampleDeviceResourceName, podRECMD))
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deviceIDRE := "stub devices: (Dev-[0-9]+)"
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@ -433,12 +452,12 @@ func testDevicePlugin(f *framework.Framework, pluginSockDir string) {
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CountSampleDeviceAllocatable(node) == expectedSampleDevsAmount
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}, 30*time.Second, framework.Poll).Should(gomega.BeTrue())
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// crosscheck that after device plugin re-registration the device assignment is preserved and
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// crosscheck that after device plugin restart the device assignment is preserved and
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// stable from the kubelet's perspective.
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// note we don't check again the logs of the container: the check is done at startup, the container
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// never restarted (runs "forever" from this test timescale perspective) hence re-doing this check
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// is useless.
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ginkgo.By("Verifying the device assignment after device plugin re-registration using podresources API")
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ginkgo.By("Verifying the device assignment after device plugin restart using podresources API")
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gomega.Eventually(ctx, func() error {
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v1PodResources, err = getV1NodeDevices(ctx)
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return err
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@ -446,30 +465,19 @@ func testDevicePlugin(f *framework.Framework, pluginSockDir string) {
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err = checkPodResourcesAssignment(v1PodResources, pod1.Namespace, pod1.Name, pod1.Spec.Containers[0].Name, SampleDeviceResourceName, []string{devID1})
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framework.ExpectNoError(err, "inconsistent device assignment after pod restart")
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ginkgo.By("Creating another pod")
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pod2 := e2epod.NewPodClient(f).CreateSync(ctx, makeBusyboxPod(SampleDeviceResourceName, podRECMD))
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err = e2epod.WaitTimeoutForPodRunningInNamespace(ctx, f.ClientSet, pod2.Name, f.Namespace.Name, 1*time.Minute)
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framework.ExpectNoError(err)
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ginkgo.By("Checking that pod got a fake device")
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devID2, err := parseLog(ctx, f, pod2.Name, pod2.Name, deviceIDRE)
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framework.ExpectNoError(err, "getting logs for pod %q", pod2.Name)
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gomega.Expect(devID2).To(gomega.Not(gomega.Equal("")), "pod2 requested a device but started successfully without")
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})
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// simulate kubelet restart *and* device plugin re-registration, while the pod and the container stays running.
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// simulate kubelet restart *and* device plugin restart, while the pod and the container stays running.
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// The device assignment should be kept and be stable across the kubelet/device plugin restart, as both the aforementioned components
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// orchestrate the device allocation: the actual consumer (container) is stable.
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ginkgo.It("Keeps device plugin assignments after kubelet restart and device plugin has been re-registered (no pod restart)", func(ctx context.Context) {
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ginkgo.It("Keeps device plugin assignments after kubelet restart and device plugin restart (no pod restart)", func(ctx context.Context) {
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podRECMD := fmt.Sprintf("devs=$(ls /tmp/ | egrep '^Dev-[0-9]+$') && echo stub devices: $devs && sleep %s", sleepIntervalForever) // the pod has to run "forever" in the timescale of this test
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pod1 := e2epod.NewPodClient(f).CreateSync(ctx, makeBusyboxPod(SampleDeviceResourceName, podRECMD))
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deviceIDRE := "stub devices: (Dev-[0-9]+)"
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devID1, err := parseLog(ctx, f, pod1.Name, pod1.Name, deviceIDRE)
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framework.ExpectNoError(err, "getting logs for pod %q", pod1.Name)
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gomega.Expect(devID1).To(gomega.Not(gomega.Equal("")), "pod1 requested a device but started successfully without")
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gomega.Expect(devID1).To(gomega.Not(gomega.BeEmpty()), "pod1 requested a device but started successfully without")
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pod1, err = e2epod.NewPodClient(f).Get(ctx, pod1.Name, metav1.GetOptions{})
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framework.ExpectNoError(err)
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@ -480,12 +488,12 @@ func testDevicePlugin(f *framework.Framework, pluginSockDir string) {
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ginkgo.By("Wait for node to be ready again")
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e2enode.WaitForAllNodesSchedulable(ctx, f.ClientSet, 5*time.Minute)
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ginkgo.By("Waiting for the pod to fail with admission error as device plugin hasn't re-registered yet")
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gomega.Eventually(ctx, getPod).
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ginkgo.By("Checking the same instance of the pod is still running after kubelet restart")
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gomega.Eventually(ctx, getPodByName).
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WithArguments(f, pod1.Name).
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WithTimeout(time.Minute).
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Should(HaveFailedWithAdmissionError(),
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"the pod succeeded to start, when it should fail with the admission error")
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Should(BeTheSamePodStillRunning(pod1),
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"the same pod instance not running across kubelet restarts, workload should not be perturbed by kubelet restarts")
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// crosscheck from the device assignment is preserved and stable from perspective of the kubelet.
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// note we don't check again the logs of the container: the check is done at startup, the container
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@ -511,7 +519,7 @@ func testDevicePlugin(f *framework.Framework, pluginSockDir string) {
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ginkgo.By("Recreating the plugin pod")
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devicePluginPod = e2epod.NewPodClient(f).CreateSync(ctx, dptemplate)
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ginkgo.By("Waiting for resource to become available on the local node after re-registration")
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ginkgo.By("Waiting for resource to become available on the local node after restart")
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gomega.Eventually(ctx, func() bool {
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node, ready := getLocalTestNode(ctx, f)
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return ready &&
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@ -519,22 +527,12 @@ func testDevicePlugin(f *framework.Framework, pluginSockDir string) {
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CountSampleDeviceAllocatable(node) == expectedSampleDevsAmount
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}, 30*time.Second, framework.Poll).Should(gomega.BeTrue())
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ginkgo.By("Creating another pod")
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pod2 := e2epod.NewPodClient(f).CreateSync(ctx, makeBusyboxPod(SampleDeviceResourceName, podRECMD))
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ginkgo.By("Checking that pod got a fake device")
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devID2, err := parseLog(ctx, f, pod2.Name, pod2.Name, deviceIDRE)
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framework.ExpectNoError(err, "getting logs for pod %q", pod2.Name)
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ginkgo.By("Verifying the device assignment after kubelet restart and device plugin re-registration using podresources API")
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// note we don't use eventually: the kubelet is supposed to be running and stable by now, so the call should just succeed
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v1PodResources, err = getV1NodeDevices(ctx)
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if err != nil {
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framework.ExpectNoError(err, "getting pod resources assignment after pod restart")
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}
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err = checkPodResourcesAssignment(v1PodResources, pod2.Namespace, pod2.Name, pod2.Spec.Containers[0].Name, SampleDeviceResourceName, []string{devID2})
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framework.ExpectNoError(err, "inconsistent device assignment after extra container restart - pod2")
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ginkgo.By("Checking the same instance of the pod is still running after the device plugin restart")
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gomega.Eventually(ctx, getPodByName).
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WithArguments(f, pod1.Name).
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WithTimeout(time.Minute).
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Should(BeTheSamePodStillRunning(pod1),
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"the same pod instance not running across kubelet restarts, workload should not be perturbed by device plugins restarts")
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})
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})
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}
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@ -542,10 +540,10 @@ func testDevicePlugin(f *framework.Framework, pluginSockDir string) {
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func testDevicePluginNodeReboot(f *framework.Framework, pluginSockDir string) {
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ginkgo.Context("DevicePlugin [Serial] [Disruptive]", func() {
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var devicePluginPod *v1.Pod
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var v1alphaPodResources *kubeletpodresourcesv1alpha1.ListPodResourcesResponse
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var v1PodResources *kubeletpodresourcesv1.ListPodResourcesResponse
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var triggerPathFile, triggerPathDir string
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var err error
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ginkgo.BeforeEach(func(ctx context.Context) {
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ginkgo.By("Wait for node to be ready")
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gomega.Eventually(ctx, func(ctx context.Context) bool {
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@ -560,25 +558,16 @@ func testDevicePluginNodeReboot(f *framework.Framework, pluginSockDir string) {
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// This is done in a gomega.Eventually with retries since a prior test in a different test suite could've run and the deletion of it's resources may still be in progress.
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// xref: https://issue.k8s.io/115381
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gomega.Eventually(ctx, func(ctx context.Context) error {
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v1alphaPodResources, err = getV1alpha1NodeDevices(ctx)
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if err != nil {
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return fmt.Errorf("failed to get node local podresources by accessing the (v1alpha) podresources API endpoint: %v", err)
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}
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v1PodResources, err = getV1NodeDevices(ctx)
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if err != nil {
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return fmt.Errorf("failed to get node local podresources by accessing the (v1) podresources API endpoint: %v", err)
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}
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if len(v1alphaPodResources.PodResources) > 0 {
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return fmt.Errorf("expected v1alpha pod resources to be empty, but got non-empty resources: %+v", v1alphaPodResources.PodResources)
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}
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if len(v1PodResources.PodResources) > 0 {
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return fmt.Errorf("expected v1 pod resources to be empty, but got non-empty resources: %+v", v1PodResources.PodResources)
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}
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return nil
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}, f.Timeouts.PodDelete, f.Timeouts.Poll).Should(gomega.Succeed())
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}, f.Timeouts.SystemDaemonsetStartup, f.Timeouts.Poll).Should(gomega.Succeed())
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ginkgo.By("Setting up the directory and file for controlling registration")
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triggerPathDir = filepath.Join(devicePluginDir, "sample")
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@ -675,8 +664,7 @@ func testDevicePluginNodeReboot(f *framework.Framework, pluginSockDir string) {
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// simulate node reboot scenario by removing pods using CRI before kubelet is started. In addition to that,
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// intentionally a scenario is created where after node reboot, application pods requesting devices appear before the device plugin pod
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// exposing those devices as resource has re-registers itself to Kubelet. The expected behavior is that the application pod fails at
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// admission time.
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// exposing those devices as resource has restarted. The expected behavior is that the application pod fails at admission time.
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ginkgo.It("Keeps device plugin assignments across node reboots (no pod restart, no device plugin re-registration)", func(ctx context.Context) {
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podRECMD := fmt.Sprintf("devs=$(ls /tmp/ | egrep '^Dev-[0-9]+$') && echo stub devices: $devs && sleep %s", sleepIntervalForever)
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pod1 := e2epod.NewPodClient(f).CreateSync(ctx, makeBusyboxPod(SampleDeviceResourceName, podRECMD))
|
||||
@ -851,3 +839,32 @@ func getSampleDevicePluginPod(pluginSockDir string) *v1.Pod {
|
||||
|
||||
return dp
|
||||
}
|
||||
|
||||
func BeTheSamePodStillRunning(expected *v1.Pod) types.GomegaMatcher {
|
||||
return gomega.And(
|
||||
BeTheSamePodAs(expected.UID),
|
||||
BeAPodInPhase(v1.PodRunning),
|
||||
BeAPodReady(),
|
||||
)
|
||||
}
|
||||
|
||||
// BeReady matches if the pod is reported ready
|
||||
func BeAPodReady() types.GomegaMatcher {
|
||||
return gcustom.MakeMatcher(func(actual *v1.Pod) (bool, error) {
|
||||
return podutils.IsPodReady(actual), nil
|
||||
}).WithTemplate("Pod {{.Actual.Namespace}}/{{.Actual.Name}} UID {{.Actual.UID}} not ready yet")
|
||||
}
|
||||
|
||||
// BeAPodInPhase matches if the pod is running
|
||||
func BeAPodInPhase(phase v1.PodPhase) types.GomegaMatcher {
|
||||
return gcustom.MakeMatcher(func(actual *v1.Pod) (bool, error) {
|
||||
return actual.Status.Phase == phase, nil
|
||||
}).WithTemplate("Pod {{.Actual.Namespace}}/{{.Actual.Name}} failed {{.To}} be in phase {{.Data}} instead is in phase {{.Actual.Status.Phase}}").WithTemplateData(phase)
|
||||
}
|
||||
|
||||
// BeTheSamePodAs matches if the pod has the given UID
|
||||
func BeTheSamePodAs(podUID k8stypes.UID) types.GomegaMatcher {
|
||||
return gcustom.MakeMatcher(func(actual *v1.Pod) (bool, error) {
|
||||
return actual.UID == podUID, nil
|
||||
}).WithTemplate("Pod {{.Actual.Namespace}}/{{.Actual.Name}} expected UID {{.Data}} has UID instead {{.Actual.UID}}").WithTemplateData(podUID)
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user