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node: e2e: add test for the checkpoint recovery
Add a e2e test to exercise the checkpoint recovery flow. This means we need to actually create a old (V1, pre-1.20) checkpoint, but if we do it only in the e2e test, it's still fine. Signed-off-by: Francesco Romani <fromani@redhat.com>
This commit is contained in:
parent
2f426fdba6
commit
b382b6cd0a
370
test/e2e_node/device_manager_test.go
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370
test/e2e_node/device_manager_test.go
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@ -0,0 +1,370 @@
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/*
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Copyright 2021 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package e2enode
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import (
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"context"
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"fmt"
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"io/ioutil"
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"os"
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"path/filepath"
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"regexp"
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"sort"
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"strings"
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"time"
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v1 "k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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kubeletpodresourcesv1 "k8s.io/kubelet/pkg/apis/podresources/v1"
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"k8s.io/kubernetes/pkg/kubelet/apis/podresources"
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"k8s.io/kubernetes/pkg/kubelet/checkpointmanager"
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"k8s.io/kubernetes/pkg/kubelet/cm/devicemanager/checkpoint"
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"k8s.io/kubernetes/pkg/kubelet/util"
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"k8s.io/kubernetes/test/e2e/framework"
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e2enode "k8s.io/kubernetes/test/e2e/framework/node"
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e2epod "k8s.io/kubernetes/test/e2e/framework/pod"
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e2eskipper "k8s.io/kubernetes/test/e2e/framework/skipper"
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"github.com/onsi/ginkgo"
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"github.com/onsi/gomega"
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)
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const (
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devicePluginDir = "/var/lib/kubelet/device-plugins"
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checkpointName = "kubelet_internal_checkpoint"
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)
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// Serial because the test updates kubelet configuration.
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var _ = SIGDescribe("Device Manager [Serial] [Feature:DeviceManager][NodeFeature:DeviceManager]", func() {
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checkpointFullPath := filepath.Join(devicePluginDir, checkpointName)
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f := framework.NewDefaultFramework("devicemanager-test")
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ginkgo.Context("With SRIOV devices in the system", func() {
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// this test wants to reproduce what happened in https://github.com/kubernetes/kubernetes/issues/102880
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ginkgo.It("should be able to recover V1 (aka pre-1.20) checkpoint data and reject pods before device re-registration", func() {
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if sriovdevCount, err := countSRIOVDevices(); err != nil || sriovdevCount == 0 {
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e2eskipper.Skipf("this test is meant to run on a system with at least one configured VF from SRIOV device")
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}
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oldCfg := enablePodResourcesFeatureGateInKubelet(f)
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defer func() {
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// restore kubelet config
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setOldKubeletConfig(f, oldCfg)
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// Delete state file to allow repeated runs
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deleteStateFile()
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}()
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configMap := getSRIOVDevicePluginConfigMap(framework.TestContext.SriovdpConfigMapFile)
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sd := setupSRIOVConfigOrFail(f, configMap)
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waitForSRIOVResources(f, sd)
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cntName := "gu-container"
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// we create and delete a pod to make sure the internal device manager state contains a pod allocation
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ginkgo.By(fmt.Sprintf("Successfully admit one guaranteed pod with 1 core, 1 %s device", sd.resourceName))
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var initCtnAttrs []tmCtnAttribute
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ctnAttrs := []tmCtnAttribute{
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{
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ctnName: cntName,
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cpuRequest: "1000m",
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cpuLimit: "1000m",
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deviceName: sd.resourceName,
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deviceRequest: "1",
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deviceLimit: "1",
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},
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}
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podName := "gu-pod-rec-pre-1"
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framework.Logf("creating pod %s attrs %v", podName, ctnAttrs)
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pod := makeTopologyManagerTestPod(podName, ctnAttrs, initCtnAttrs)
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pod = f.PodClient().CreateSync(pod)
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// now we need to simulate a node drain, so we remove all the pods, including the sriov device plugin.
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ginkgo.By("deleting the pod")
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// note we delete right now because we know the current implementation of devicemanager will NOT
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// clean up on pod deletion. When this changes, the deletion needs to be done after the test is done.
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deletePodSyncByName(f, pod.Name)
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waitForAllContainerRemoval(pod.Name, pod.Namespace)
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ginkgo.By("teardown the sriov device plugin")
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// since we will NOT be recreating the plugin, we clean up everything now
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teardownSRIOVConfigOrFail(f, sd)
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ginkgo.By("stopping the kubelet")
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killKubelet("SIGSTOP")
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ginkgo.By("rewriting the kubelet checkpoint file as v1")
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err := rewriteCheckpointAsV1(devicePluginDir, checkpointName)
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// make sure we remove any leftovers
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defer os.Remove(checkpointFullPath)
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framework.ExpectNoError(err)
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// this mimics a kubelet restart after the upgrade
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// TODO: is SIGTERM (less brutal) good enough?
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ginkgo.By("killing the kubelet")
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killKubelet("SIGKILL")
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ginkgo.By("waiting for the kubelet to be ready again")
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// Wait for the Kubelet to be ready.
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gomega.Eventually(func() bool {
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nodes, err := e2enode.TotalReady(f.ClientSet)
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framework.ExpectNoError(err)
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return nodes == 1
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}, time.Minute, time.Second).Should(gomega.BeTrue())
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// note we DO NOT start the sriov device plugin. This is intentional.
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// issue#102880 reproduces because of a race on startup caused by corrupted device manager
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// state which leads to v1.Node object not updated on apiserver.
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// So to hit the issue we need to receive the pod *before* the device plugin registers itself.
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// The simplest and safest way to reproduce is just avoid to run the device plugin again
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podName = "gu-pod-rec-post-2"
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framework.Logf("creating pod %s attrs %v", podName, ctnAttrs)
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pod = makeTopologyManagerTestPod(podName, ctnAttrs, initCtnAttrs)
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pod = f.PodClient().Create(pod)
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err = e2epod.WaitForPodCondition(f.ClientSet, f.Namespace.Name, pod.Name, "Failed", 30*time.Second, func(pod *v1.Pod) (bool, error) {
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if pod.Status.Phase != v1.PodPending {
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return true, nil
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}
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return false, nil
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})
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framework.ExpectNoError(err)
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pod, err = f.PodClient().Get(context.TODO(), pod.Name, metav1.GetOptions{})
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framework.ExpectNoError(err)
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if pod.Status.Phase != v1.PodFailed {
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framework.Failf("pod %s not failed: %v", pod.Name, pod.Status)
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}
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framework.Logf("checking pod %s status reason (%s)", pod.Name, pod.Status.Reason)
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if !isUnexpectedAdmissionError(pod) {
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framework.Failf("pod %s failed for wrong reason: %q", pod.Name, pod.Status.Reason)
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}
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deletePodSyncByName(f, pod.Name)
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})
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ginkgo.It("should be able to recover V1 (aka pre-1.20) checkpoint data and update topology info on device re-registration", func() {
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if sriovdevCount, err := countSRIOVDevices(); err != nil || sriovdevCount == 0 {
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e2eskipper.Skipf("this test is meant to run on a system with at least one configured VF from SRIOV device")
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}
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oldCfg := enablePodResourcesFeatureGateInKubelet(f)
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defer func() {
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// restore kubelet config
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setOldKubeletConfig(f, oldCfg)
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// Delete state file to allow repeated runs
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deleteStateFile()
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}()
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endpoint, err := util.LocalEndpoint(defaultPodResourcesPath, podresources.Socket)
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framework.ExpectNoError(err)
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configMap := getSRIOVDevicePluginConfigMap(framework.TestContext.SriovdpConfigMapFile)
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sd := setupSRIOVConfigOrFail(f, configMap)
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waitForSRIOVResources(f, sd)
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cli, conn, err := podresources.GetV1Client(endpoint, defaultPodResourcesTimeout, defaultPodResourcesMaxSize)
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framework.ExpectNoError(err)
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resp, err := cli.GetAllocatableResources(context.TODO(), &kubeletpodresourcesv1.AllocatableResourcesRequest{})
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conn.Close()
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framework.ExpectNoError(err)
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suitableDevs := 0
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for _, dev := range resp.GetDevices() {
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for _, node := range dev.GetTopology().GetNodes() {
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if node.GetID() != 0 {
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suitableDevs++
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}
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}
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}
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if suitableDevs == 0 {
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teardownSRIOVConfigOrFail(f, sd)
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e2eskipper.Skipf("no devices found on NUMA Cell other than 0")
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}
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cntName := "gu-container"
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// we create and delete a pod to make sure the internal device manager state contains a pod allocation
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ginkgo.By(fmt.Sprintf("Successfully admit one guaranteed pod with 1 core, 1 %s device", sd.resourceName))
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var initCtnAttrs []tmCtnAttribute
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ctnAttrs := []tmCtnAttribute{
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{
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ctnName: cntName,
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cpuRequest: "1000m",
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cpuLimit: "1000m",
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deviceName: sd.resourceName,
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deviceRequest: "1",
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deviceLimit: "1",
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},
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}
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podName := "gu-pod-rec-pre-1"
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framework.Logf("creating pod %s attrs %v", podName, ctnAttrs)
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pod := makeTopologyManagerTestPod(podName, ctnAttrs, initCtnAttrs)
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pod = f.PodClient().CreateSync(pod)
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// now we need to simulate a node drain, so we remove all the pods, including the sriov device plugin.
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ginkgo.By("deleting the pod")
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// note we delete right now because we know the current implementation of devicemanager will NOT
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// clean up on pod deletion. When this changes, the deletion needs to be done after the test is done.
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deletePodSyncByName(f, pod.Name)
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waitForAllContainerRemoval(pod.Name, pod.Namespace)
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ginkgo.By("teardown the sriov device plugin")
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// no need to delete the config now (speed up later)
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deleteSRIOVPodOrFail(f, sd)
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ginkgo.By("stopping the kubelet")
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killKubelet("SIGSTOP")
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ginkgo.By("rewriting the kubelet checkpoint file as v1")
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err = rewriteCheckpointAsV1(devicePluginDir, checkpointName)
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// make sure we remove any leftovers
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defer os.Remove(checkpointFullPath)
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framework.ExpectNoError(err)
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// this mimics a kubelet restart after the upgrade
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// TODO: is SIGTERM (less brutal) good enough?
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ginkgo.By("killing the kubelet")
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killKubelet("SIGKILL")
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ginkgo.By("waiting for the kubelet to be ready again")
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// Wait for the Kubelet to be ready.
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gomega.Eventually(func() bool {
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nodes, err := e2enode.TotalReady(f.ClientSet)
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framework.ExpectNoError(err)
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return nodes == 1
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}, time.Minute, time.Second).Should(gomega.BeTrue())
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sd2 := &sriovData{
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configMap: sd.configMap,
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serviceAccount: sd.serviceAccount,
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}
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sd2.pod = createSRIOVPodOrFail(f)
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defer teardownSRIOVConfigOrFail(f, sd2)
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waitForSRIOVResources(f, sd2)
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compareSRIOVResources(sd, sd2)
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cli, conn, err = podresources.GetV1Client(endpoint, defaultPodResourcesTimeout, defaultPodResourcesMaxSize)
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framework.ExpectNoError(err)
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defer conn.Close()
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resp2, err := cli.GetAllocatableResources(context.TODO(), &kubeletpodresourcesv1.AllocatableResourcesRequest{})
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framework.ExpectNoError(err)
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cntDevs := stringifyContainerDevices(resp.GetDevices())
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cntDevs2 := stringifyContainerDevices(resp2.GetDevices())
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if cntDevs != cntDevs2 {
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framework.Failf("different allocatable resources expected %v got %v", cntDevs, cntDevs2)
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}
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})
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})
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})
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func compareSRIOVResources(expected, got *sriovData) {
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if expected.resourceName != got.resourceName {
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framework.Failf("different SRIOV resource name: expected %q got %q", expected.resourceName, got.resourceName)
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}
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if expected.resourceAmount != got.resourceAmount {
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framework.Failf("different SRIOV resource amount: expected %d got %d", expected.resourceAmount, got.resourceAmount)
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}
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}
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func isUnexpectedAdmissionError(pod *v1.Pod) bool {
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re := regexp.MustCompile(`Unexpected.*Admission.*Error`)
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return re.MatchString(pod.Status.Reason)
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}
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func rewriteCheckpointAsV1(dir, name string) error {
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ginkgo.By(fmt.Sprintf("Creating temporary checkpoint manager (dir=%q)", dir))
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checkpointManager, err := checkpointmanager.NewCheckpointManager(dir)
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if err != nil {
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return err
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}
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cp := checkpoint.New(make([]checkpoint.PodDevicesEntry, 0), make(map[string][]string))
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err = checkpointManager.GetCheckpoint(name, cp)
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if err != nil {
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return err
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}
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ginkgo.By(fmt.Sprintf("Read checkpoint %q %#v", name, cp))
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podDevices, registeredDevs := cp.GetDataInLatestFormat()
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podDevicesV1 := convertPodDeviceEntriesToV1(podDevices)
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cpV1 := checkpoint.NewV1(podDevicesV1, registeredDevs)
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blob, err := cpV1.MarshalCheckpoint()
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if err != nil {
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return err
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}
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// TODO: why `checkpointManager.CreateCheckpoint(name, cpV1)` doesn't seem to work?
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ckPath := filepath.Join(dir, name)
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ioutil.WriteFile(filepath.Join("/tmp", name), blob, 0600)
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return ioutil.WriteFile(ckPath, blob, 0600)
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}
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func convertPodDeviceEntriesToV1(entries []checkpoint.PodDevicesEntry) []checkpoint.PodDevicesEntryV1 {
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entriesv1 := []checkpoint.PodDevicesEntryV1{}
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for _, entry := range entries {
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deviceIDs := []string{}
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for _, perNUMANodeDevIDs := range entry.DeviceIDs {
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deviceIDs = append(deviceIDs, perNUMANodeDevIDs...)
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}
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entriesv1 = append(entriesv1, checkpoint.PodDevicesEntryV1{
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PodUID: entry.PodUID,
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ContainerName: entry.ContainerName,
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ResourceName: entry.ResourceName,
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DeviceIDs: deviceIDs,
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AllocResp: entry.AllocResp,
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})
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}
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return entriesv1
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}
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func stringifyContainerDevices(devs []*kubeletpodresourcesv1.ContainerDevices) string {
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entries := []string{}
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for _, dev := range devs {
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devIDs := dev.GetDeviceIds()
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if devIDs != nil {
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for _, devID := range dev.DeviceIds {
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nodes := dev.GetTopology().GetNodes()
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if nodes != nil {
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for _, node := range nodes {
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entries = append(entries, fmt.Sprintf("%s[%s]@NUMA=%d", dev.ResourceName, devID, node.GetID()))
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}
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} else {
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entries = append(entries, fmt.Sprintf("%s[%s]@NUMA=none", dev.ResourceName, devID))
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}
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}
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} else {
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entries = append(entries, dev.ResourceName)
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}
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}
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sort.Strings(entries)
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return strings.Join(entries, ", ")
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}
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@ -505,6 +505,15 @@ type sriovData struct {
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}
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func setupSRIOVConfigOrFail(f *framework.Framework, configMap *v1.ConfigMap) *sriovData {
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sd := createSRIOVConfigOrFail(f, configMap)
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e2enode.WaitForNodeToBeReady(f.ClientSet, framework.TestContext.NodeName, 5*time.Minute)
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sd.pod = createSRIOVPodOrFail(f)
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return sd
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}
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func createSRIOVConfigOrFail(f *framework.Framework, configMap *v1.ConfigMap) *sriovData {
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var err error
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ginkgo.By(fmt.Sprintf("Creating configMap %v/%v", metav1.NamespaceSystem, configMap.Name))
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@ -522,8 +531,13 @@ func setupSRIOVConfigOrFail(f *framework.Framework, configMap *v1.ConfigMap) *sr
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framework.Failf("unable to create test serviceAccount %s: %v", serviceAccount.Name, err)
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}
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e2enode.WaitForNodeToBeReady(f.ClientSet, framework.TestContext.NodeName, 5*time.Minute)
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return &sriovData{
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configMap: configMap,
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serviceAccount: serviceAccount,
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}
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}
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func createSRIOVPodOrFail(f *framework.Framework) *v1.Pod {
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dp := getSRIOVDevicePluginPod()
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dp.Spec.NodeName = framework.TestContext.NodeName
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@ -536,11 +550,7 @@ func setupSRIOVConfigOrFail(f *framework.Framework, configMap *v1.ConfigMap) *sr
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}
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framework.ExpectNoError(err)
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return &sriovData{
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configMap: configMap,
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serviceAccount: serviceAccount,
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pod: dpPod,
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}
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return dpPod
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}
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// waitForSRIOVResources waits until enough SRIOV resources are avaailable, expecting to complete within the timeout.
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@ -560,7 +570,7 @@ func waitForSRIOVResources(f *framework.Framework, sd *sriovData) {
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framework.Logf("Detected SRIOV allocatable devices name=%q amount=%d", sd.resourceName, sd.resourceAmount)
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}
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func teardownSRIOVConfigOrFail(f *framework.Framework, sd *sriovData) {
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func deleteSRIOVPodOrFail(f *framework.Framework, sd *sriovData) {
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var err error
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gp := int64(0)
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deleteOptions := metav1.DeleteOptions{
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@ -571,6 +581,14 @@ func teardownSRIOVConfigOrFail(f *framework.Framework, sd *sriovData) {
|
||||
err = f.ClientSet.CoreV1().Pods(sd.pod.Namespace).Delete(context.TODO(), sd.pod.Name, deleteOptions)
|
||||
framework.ExpectNoError(err)
|
||||
waitForAllContainerRemoval(sd.pod.Name, sd.pod.Namespace)
|
||||
}
|
||||
|
||||
func removeSRIOVConfigOrFail(f *framework.Framework, sd *sriovData) {
|
||||
var err error
|
||||
gp := int64(0)
|
||||
deleteOptions := metav1.DeleteOptions{
|
||||
GracePeriodSeconds: &gp,
|
||||
}
|
||||
|
||||
ginkgo.By(fmt.Sprintf("Deleting configMap %v/%v", metav1.NamespaceSystem, sd.configMap.Name))
|
||||
err = f.ClientSet.CoreV1().ConfigMaps(metav1.NamespaceSystem).Delete(context.TODO(), sd.configMap.Name, deleteOptions)
|
||||
@ -581,6 +599,11 @@ func teardownSRIOVConfigOrFail(f *framework.Framework, sd *sriovData) {
|
||||
framework.ExpectNoError(err)
|
||||
}
|
||||
|
||||
func teardownSRIOVConfigOrFail(f *framework.Framework, sd *sriovData) {
|
||||
deleteSRIOVPodOrFail(f, sd)
|
||||
removeSRIOVConfigOrFail(f, sd)
|
||||
}
|
||||
|
||||
func runTMScopeResourceAlignmentTestSuite(f *framework.Framework, configMap *v1.ConfigMap, reservedSystemCPUs, policy string, numaNodes, coreCount int) {
|
||||
threadsPerCore := getSMTLevel()
|
||||
sd := setupSRIOVConfigOrFail(f, configMap)
|
||||
|
@ -452,6 +452,18 @@ func stopKubelet() func() {
|
||||
}
|
||||
}
|
||||
|
||||
// killKubelet sends a signal (SIGINT, SIGSTOP, SIGTERM...) to the running kubelet
|
||||
func killKubelet(sig string) {
|
||||
kubeletServiceName := findKubeletServiceName(true)
|
||||
|
||||
// reset the kubelet service start-limit-hit
|
||||
stdout, err := exec.Command("sudo", "systemctl", "reset-failed", kubeletServiceName).CombinedOutput()
|
||||
framework.ExpectNoError(err, "Failed to reset kubelet start-limit-hit with systemctl: %v, %v", err, stdout)
|
||||
|
||||
stdout, err = exec.Command("sudo", "systemctl", "kill", "-s", sig, kubeletServiceName).CombinedOutput()
|
||||
framework.ExpectNoError(err, "Failed to stop kubelet with systemctl: %v, %v", err, stdout)
|
||||
}
|
||||
|
||||
func kubeletHealthCheck(url string) bool {
|
||||
insecureTransport := http.DefaultTransport.(*http.Transport).Clone()
|
||||
insecureTransport.TLSClientConfig = &tls.Config{InsecureSkipVerify: true}
|
||||
|
Loading…
Reference in New Issue
Block a user