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513 lines
17 KiB
Go
513 lines
17 KiB
Go
//go:build cgo && linux
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// +build cgo,linux
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/*
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Copyright 2016 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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"os"
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"path"
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"time"
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"github.com/onsi/ginkgo"
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"github.com/onsi/gomega"
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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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"k8s.io/apimachinery/pkg/fields"
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"k8s.io/apimachinery/pkg/labels"
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"k8s.io/apimachinery/pkg/types"
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"k8s.io/apimachinery/pkg/util/uuid"
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clientset "k8s.io/client-go/kubernetes"
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coreclientset "k8s.io/client-go/kubernetes/typed/core/v1"
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"k8s.io/kubernetes/pkg/kubelet/util"
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"k8s.io/kubernetes/test/e2e/framework"
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e2epod "k8s.io/kubernetes/test/e2e/framework/pod"
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testutils "k8s.io/kubernetes/test/utils"
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)
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var _ = SIGDescribe("NodeProblemDetector [NodeFeature:NodeProblemDetector] [Serial]", func() {
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const (
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pollInterval = 1 * time.Second
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pollConsistent = 5 * time.Second
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pollTimeout = 1 * time.Minute
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)
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f := framework.NewDefaultFramework("node-problem-detector")
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var c clientset.Interface
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var uid string
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var ns, name, configName, eventNamespace string
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var bootTime, nodeTime time.Time
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var image string
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ginkgo.BeforeEach(func() {
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c = f.ClientSet
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ns = f.Namespace.Name
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uid = string(uuid.NewUUID())
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name = "node-problem-detector-" + uid
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configName = "node-problem-detector-config-" + uid
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// There is no namespace for Node, event recorder will set default namespace for node events.
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eventNamespace = metav1.NamespaceDefault
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image = getNodeProblemDetectorImage()
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ginkgo.By(fmt.Sprintf("Using node-problem-detector image: %s", image))
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})
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// Test system log monitor. We may add other tests if we have more problem daemons in the future.
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ginkgo.Describe("SystemLogMonitor", func() {
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const (
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// Use test condition to avoid changing the real node condition in use.
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// TODO(random-liu): Now node condition could be arbitrary string, consider whether we need to
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// add TestCondition when switching to predefined condition list.
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condition = v1.NodeConditionType("TestCondition")
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// File paths used in the test.
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logFile = "/log/test.log"
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configFile = "/config/testconfig.json"
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kubeConfigFile = "/config/kubeconfig"
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etcLocaltime = "/etc/localtime"
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// Volumes used in the test.
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configVolume = "config"
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logVolume = "log"
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localtimeVolume = "localtime"
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// Reasons and messages used in the test.
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defaultReason = "Default"
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defaultMessage = "default message"
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tempReason = "Temporary"
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tempMessage = "temporary error"
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permReason1 = "Permanent1"
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permMessage1 = "permanent error 1"
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permReason2 = "Permanent2"
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permMessage2 = "permanent error 2"
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)
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var source, config, hostLogFile string
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var lookback time.Duration
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var eventListOptions metav1.ListOptions
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ginkgo.BeforeEach(func() {
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ginkgo.By("Calculate Lookback duration")
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var err error
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nodeTime = time.Now()
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bootTime, err = util.GetBootTime()
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framework.ExpectNoError(err)
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// Set lookback duration longer than node up time.
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// Assume the test won't take more than 1 hour, in fact it usually only takes 90 seconds.
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lookback = nodeTime.Sub(bootTime) + time.Hour
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// Randomize the source name
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source = "kernel-monitor-" + uid
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config = `
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{
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"plugin": "filelog",
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"pluginConfig": {
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"timestamp": "^.{15}",
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"message": "kernel: \\[.*\\] (.*)",
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"timestampFormat": "` + time.Stamp + `"
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},
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"logPath": "` + logFile + `",
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"lookback": "` + lookback.String() + `",
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"bufferSize": 10,
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"source": "` + source + `",
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"conditions": [
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{
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"type": "` + string(condition) + `",
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"reason": "` + defaultReason + `",
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"message": "` + defaultMessage + `"
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}
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],
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"rules": [
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{
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"type": "temporary",
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"reason": "` + tempReason + `",
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"pattern": "` + tempMessage + `"
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},
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{
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"type": "permanent",
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"condition": "` + string(condition) + `",
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"reason": "` + permReason1 + `",
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"pattern": "` + permMessage1 + ".*" + `"
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},
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{
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"type": "permanent",
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"condition": "` + string(condition) + `",
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"reason": "` + permReason2 + `",
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"pattern": "` + permMessage2 + ".*" + `"
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}
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]
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}`
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// This token is known to apiserver and its group is `system:masters`.
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// See also the function `generateTokenFile` in `test/e2e_node/services/apiserver.go`.
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kubeConfig := fmt.Sprintf(`
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apiVersion: v1
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kind: Config
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users:
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- name: node-problem-detector
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user:
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token: %s
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clusters:
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- cluster:
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server: %s
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insecure-skip-tls-verify: true
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name: local
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contexts:
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- context:
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cluster: local
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user: node-problem-detector
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name: local-context
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current-context: local-context
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`, framework.TestContext.BearerToken, framework.TestContext.Host)
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ginkgo.By("Generate event list options")
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selector := fields.Set{
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"involvedObject.kind": "Node",
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"involvedObject.name": framework.TestContext.NodeName,
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"involvedObject.namespace": metav1.NamespaceAll,
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"source": source,
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}.AsSelector().String()
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eventListOptions = metav1.ListOptions{FieldSelector: selector}
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ginkgo.By("Create config map for the node problem detector")
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_, err = c.CoreV1().ConfigMaps(ns).Create(context.TODO(), &v1.ConfigMap{
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ObjectMeta: metav1.ObjectMeta{Name: configName},
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Data: map[string]string{
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path.Base(configFile): config,
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path.Base(kubeConfigFile): kubeConfig,
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},
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}, metav1.CreateOptions{})
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framework.ExpectNoError(err)
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ginkgo.By("Create the node problem detector")
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hostPathType := new(v1.HostPathType)
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*hostPathType = v1.HostPathFileOrCreate
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pod := f.PodClient().CreateSync(&v1.Pod{
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ObjectMeta: metav1.ObjectMeta{
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Name: name,
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},
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Spec: v1.PodSpec{
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HostNetwork: true,
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SecurityContext: &v1.PodSecurityContext{},
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ServiceAccountName: name,
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Volumes: []v1.Volume{
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{
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Name: configVolume,
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VolumeSource: v1.VolumeSource{
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ConfigMap: &v1.ConfigMapVolumeSource{
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LocalObjectReference: v1.LocalObjectReference{Name: configName},
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},
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},
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},
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{
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Name: logVolume,
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VolumeSource: v1.VolumeSource{
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EmptyDir: &v1.EmptyDirVolumeSource{},
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},
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},
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{
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Name: localtimeVolume,
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VolumeSource: v1.VolumeSource{
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HostPath: &v1.HostPathVolumeSource{
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Path: etcLocaltime,
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Type: hostPathType,
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},
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},
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},
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},
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InitContainers: []v1.Container{
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{
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Name: "init-log-file",
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Image: "debian",
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Command: []string{"/bin/sh"},
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Args: []string{
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"-c",
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fmt.Sprintf("touch %s", logFile),
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},
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VolumeMounts: []v1.VolumeMount{
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{
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Name: logVolume,
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MountPath: path.Dir(logFile),
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},
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{
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Name: localtimeVolume,
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MountPath: etcLocaltime,
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},
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},
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},
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},
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Containers: []v1.Container{
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{
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Name: name,
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Image: image,
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Command: []string{"/node-problem-detector"},
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Args: []string{
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"--logtostderr",
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fmt.Sprintf("--system-log-monitors=%s", configFile),
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// `ServiceAccount` admission controller is disabled in node e2e tests, so we could not use
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// inClusterConfig here.
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fmt.Sprintf("--apiserver-override=%s?inClusterConfig=false&auth=%s", framework.TestContext.Host, kubeConfigFile),
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},
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Env: []v1.EnvVar{
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{
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Name: "NODE_NAME",
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ValueFrom: &v1.EnvVarSource{
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FieldRef: &v1.ObjectFieldSelector{
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APIVersion: "v1",
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FieldPath: "spec.nodeName",
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},
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},
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},
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},
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VolumeMounts: []v1.VolumeMount{
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{
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Name: logVolume,
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MountPath: path.Dir(logFile),
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},
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{
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Name: localtimeVolume,
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MountPath: etcLocaltime,
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},
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{
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Name: configVolume,
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MountPath: path.Dir(configFile),
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},
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},
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},
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},
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},
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})
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// TODO: remove hardcoded kubelet volume directory path
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// framework.TestContext.KubeVolumeDir is currently not populated for node e2e
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hostLogFile = "/var/lib/kubelet/pods/" + string(pod.UID) + "/volumes/kubernetes.io~empty-dir" + logFile
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})
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ginkgo.It("should generate node condition and events for corresponding errors", func() {
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for _, test := range []struct {
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description string
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timestamp time.Time
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message string
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messageNum int
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tempEvents int // Events for temp errors
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totalEvents int // Events for both temp errors and condition changes
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conditionReason string
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conditionMessage string
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conditionType v1.ConditionStatus
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}{
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{
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description: "should generate default node condition",
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conditionReason: defaultReason,
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conditionMessage: defaultMessage,
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conditionType: v1.ConditionFalse,
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},
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{
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description: "should not generate events for too old log",
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timestamp: bootTime.Add(-1 * time.Minute),
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message: tempMessage,
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messageNum: 3,
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conditionReason: defaultReason,
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conditionMessage: defaultMessage,
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conditionType: v1.ConditionFalse,
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},
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{
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description: "should not change node condition for too old log",
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timestamp: bootTime.Add(-1 * time.Minute),
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message: permMessage1,
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messageNum: 1,
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conditionReason: defaultReason,
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conditionMessage: defaultMessage,
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conditionType: v1.ConditionFalse,
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},
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{
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description: "should generate event for old log within lookback duration",
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timestamp: nodeTime,
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message: tempMessage,
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messageNum: 3,
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tempEvents: 3,
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totalEvents: 3,
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conditionReason: defaultReason,
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conditionMessage: defaultMessage,
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conditionType: v1.ConditionFalse,
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},
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{
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description: "should change node condition for old log within lookback duration",
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timestamp: nodeTime,
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message: permMessage1,
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messageNum: 1,
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tempEvents: 3, // event number for temp errors should not change
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totalEvents: 4, // add 1 event for condition change
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conditionReason: permReason1,
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conditionMessage: permMessage1,
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conditionType: v1.ConditionTrue,
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},
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{
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description: "should generate event for new log",
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timestamp: nodeTime.Add(5 * time.Minute),
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message: tempMessage,
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messageNum: 3,
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tempEvents: 6, // add 3 events for temp errors
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totalEvents: 7, // add 3 events for temp errors
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conditionReason: permReason1,
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conditionMessage: permMessage1,
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conditionType: v1.ConditionTrue,
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},
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{
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description: "should not update node condition with the same reason",
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timestamp: nodeTime.Add(5 * time.Minute),
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message: permMessage1 + "different message",
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messageNum: 1,
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tempEvents: 6, // event number should not change
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totalEvents: 7, // event number should not change
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conditionReason: permReason1,
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conditionMessage: permMessage1,
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conditionType: v1.ConditionTrue,
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},
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{
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description: "should change node condition for new log",
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timestamp: nodeTime.Add(5 * time.Minute),
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message: permMessage2,
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messageNum: 1,
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tempEvents: 6, // event number for temp errors should not change
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totalEvents: 8, // add 1 event for condition change
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conditionReason: permReason2,
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conditionMessage: permMessage2,
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conditionType: v1.ConditionTrue,
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},
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} {
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ginkgo.By(test.description)
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if test.messageNum > 0 {
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ginkgo.By(fmt.Sprintf("Inject %d logs: %q", test.messageNum, test.message))
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err := injectLog(hostLogFile, test.timestamp, test.message, test.messageNum)
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framework.ExpectNoError(err)
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}
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ginkgo.By(fmt.Sprintf("Wait for %d temp events generated", test.tempEvents))
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gomega.Eventually(func() error {
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return verifyEvents(c.CoreV1().Events(eventNamespace), eventListOptions, test.tempEvents, tempReason, tempMessage)
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}, pollTimeout, pollInterval).Should(gomega.Succeed())
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ginkgo.By(fmt.Sprintf("Wait for %d total events generated", test.totalEvents))
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gomega.Eventually(func() error {
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return verifyTotalEvents(c.CoreV1().Events(eventNamespace), eventListOptions, test.totalEvents)
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}, pollTimeout, pollInterval).Should(gomega.Succeed())
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ginkgo.By(fmt.Sprintf("Make sure only %d total events generated", test.totalEvents))
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gomega.Consistently(func() error {
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return verifyTotalEvents(c.CoreV1().Events(eventNamespace), eventListOptions, test.totalEvents)
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}, pollConsistent, pollInterval).Should(gomega.Succeed())
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ginkgo.By(fmt.Sprintf("Make sure node condition %q is set", condition))
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gomega.Eventually(func() error {
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return verifyNodeCondition(c.CoreV1().Nodes(), condition, test.conditionType, test.conditionReason, test.conditionMessage)
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}, pollTimeout, pollInterval).Should(gomega.Succeed())
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ginkgo.By(fmt.Sprintf("Make sure node condition %q is stable", condition))
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gomega.Consistently(func() error {
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return verifyNodeCondition(c.CoreV1().Nodes(), condition, test.conditionType, test.conditionReason, test.conditionMessage)
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}, pollConsistent, pollInterval).Should(gomega.Succeed())
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}
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})
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ginkgo.AfterEach(func() {
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if ginkgo.CurrentGinkgoTestDescription().Failed && framework.TestContext.DumpLogsOnFailure {
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ginkgo.By("Get node problem detector log")
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log, err := e2epod.GetPodLogs(c, ns, name, name)
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gomega.Expect(err).ShouldNot(gomega.HaveOccurred())
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framework.Logf("Node Problem Detector logs:\n %s", log)
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}
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ginkgo.By("Delete the node problem detector")
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f.PodClient().Delete(context.TODO(), name, *metav1.NewDeleteOptions(0))
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ginkgo.By("Wait for the node problem detector to disappear")
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gomega.Expect(e2epod.WaitForPodToDisappear(c, ns, name, labels.Everything(), pollInterval, pollTimeout)).To(gomega.Succeed())
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ginkgo.By("Delete the config map")
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c.CoreV1().ConfigMaps(ns).Delete(context.TODO(), configName, metav1.DeleteOptions{})
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ginkgo.By("Clean up the events")
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gomega.Expect(c.CoreV1().Events(eventNamespace).DeleteCollection(context.TODO(), *metav1.NewDeleteOptions(0), eventListOptions)).To(gomega.Succeed())
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ginkgo.By("Clean up the node condition")
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patch := []byte(fmt.Sprintf(`{"status":{"conditions":[{"$patch":"delete","type":"%s"}]}}`, condition))
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c.CoreV1().RESTClient().Patch(types.StrategicMergePatchType).Resource("nodes").Name(framework.TestContext.NodeName).SubResource("status").Body(patch).Do(context.TODO())
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})
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})
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})
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// injectLog injects kernel log into specified file.
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func injectLog(file string, timestamp time.Time, log string, num int) error {
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f, err := os.OpenFile(file, os.O_RDWR|os.O_APPEND, 0666)
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if err != nil {
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return err
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}
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defer f.Close()
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for i := 0; i < num; i++ {
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_, err := f.WriteString(fmt.Sprintf("%s kernel: [0.000000] %s\n", timestamp.Format(time.Stamp), log))
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if err != nil {
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return err
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}
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}
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return nil
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}
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// verifyEvents verifies there are num specific events generated with given reason and message.
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func verifyEvents(e coreclientset.EventInterface, options metav1.ListOptions, num int, reason, message string) error {
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events, err := e.List(context.TODO(), options)
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if err != nil {
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return err
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}
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count := 0
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for _, event := range events.Items {
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if event.Reason != reason || event.Message != message {
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continue
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}
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count += int(event.Count)
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}
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if count != num {
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return fmt.Errorf("expected %d events with reason set to %s and message set to %s\nbut %d actual events occurred. Events : %v", num, reason, message, count, events.Items)
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}
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return nil
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}
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// verifyTotalEvents verifies there are num events in total.
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func verifyTotalEvents(e coreclientset.EventInterface, options metav1.ListOptions, num int) error {
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events, err := e.List(context.TODO(), options)
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if err != nil {
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return err
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}
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count := 0
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for _, event := range events.Items {
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count += int(event.Count)
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}
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if count != num {
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return fmt.Errorf("expected total number of events was %d, actual events counted was %d\nEvents : %v", num, count, events.Items)
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}
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return nil
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}
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// verifyNodeCondition verifies specific node condition is generated, if reason and message are empty, they will not be checked
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func verifyNodeCondition(n coreclientset.NodeInterface, condition v1.NodeConditionType, status v1.ConditionStatus, reason, message string) error {
|
|
node, err := n.Get(context.TODO(), framework.TestContext.NodeName, metav1.GetOptions{})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
_, c := testutils.GetNodeCondition(&node.Status, condition)
|
|
if c == nil {
|
|
return fmt.Errorf("node condition %q not found", condition)
|
|
}
|
|
if c.Status != status || c.Reason != reason || c.Message != message {
|
|
return fmt.Errorf("unexpected node condition %q: %+v", condition, c)
|
|
}
|
|
return nil
|
|
}
|