k3s/pkg/kubelet/kubelet_node_status_test.go

1142 lines
40 KiB
Go

/*
Copyright 2016 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package kubelet
import (
"fmt"
"reflect"
goruntime "runtime"
"sort"
"strconv"
"testing"
"time"
cadvisorapi "github.com/google/cadvisor/info/v1"
cadvisorapiv2 "github.com/google/cadvisor/info/v2"
"k8s.io/kubernetes/pkg/api"
apierrors "k8s.io/kubernetes/pkg/api/errors"
"k8s.io/kubernetes/pkg/api/resource"
"k8s.io/kubernetes/pkg/api/unversioned"
"k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset/fake"
"k8s.io/kubernetes/pkg/client/testing/core"
kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
"k8s.io/kubernetes/pkg/kubelet/util/sliceutils"
"k8s.io/kubernetes/pkg/runtime"
"k8s.io/kubernetes/pkg/util/diff"
"k8s.io/kubernetes/pkg/util/rand"
"k8s.io/kubernetes/pkg/util/uuid"
"k8s.io/kubernetes/pkg/util/wait"
"k8s.io/kubernetes/pkg/version"
"k8s.io/kubernetes/pkg/volume/util/volumehelper"
)
const (
maxImageTagsForTest = 20
)
// generateTestingImageList generate randomly generated image list and corresponding expectedImageList.
func generateTestingImageList(count int) ([]kubecontainer.Image, []api.ContainerImage) {
// imageList is randomly generated image list
var imageList []kubecontainer.Image
for ; count > 0; count-- {
imageItem := kubecontainer.Image{
ID: string(uuid.NewUUID()),
RepoTags: generateImageTags(),
Size: rand.Int63nRange(minImgSize, maxImgSize+1),
}
imageList = append(imageList, imageItem)
}
// expectedImageList is generated by imageList according to size and maxImagesInNodeStatus
// 1. sort the imageList by size
sort.Sort(sliceutils.ByImageSize(imageList))
// 2. convert sorted imageList to api.ContainerImage list
var expectedImageList []api.ContainerImage
for _, kubeImage := range imageList {
apiImage := api.ContainerImage{
Names: kubeImage.RepoTags[0:maxNamesPerImageInNodeStatus],
SizeBytes: kubeImage.Size,
}
expectedImageList = append(expectedImageList, apiImage)
}
// 3. only returns the top maxImagesInNodeStatus images in expectedImageList
return imageList, expectedImageList[0:maxImagesInNodeStatus]
}
func generateImageTags() []string {
var tagList []string
// Generate > maxNamesPerImageInNodeStatus tags so that the test can verify
// that kubelet report up to maxNamesPerImageInNodeStatus tags.
count := rand.IntnRange(maxNamesPerImageInNodeStatus+1, maxImageTagsForTest+1)
for ; count > 0; count-- {
tagList = append(tagList, "gcr.io/google_containers:v"+strconv.Itoa(count))
}
return tagList
}
func TestUpdateNewNodeStatus(t *testing.T) {
// generate one more than maxImagesInNodeStatus in inputImageList
inputImageList, expectedImageList := generateTestingImageList(maxImagesInNodeStatus + 1)
testKubelet := newTestKubeletWithImageList(
t, inputImageList, false /* controllerAttachDetachEnabled */)
kubelet := testKubelet.kubelet
kubeClient := testKubelet.fakeKubeClient
kubeClient.ReactionChain = fake.NewSimpleClientset(&api.NodeList{Items: []api.Node{
{ObjectMeta: api.ObjectMeta{Name: testKubeletHostname}},
}}).ReactionChain
machineInfo := &cadvisorapi.MachineInfo{
MachineID: "123",
SystemUUID: "abc",
BootID: "1b3",
NumCores: 2,
MemoryCapacity: 10E9, // 10G
}
mockCadvisor := testKubelet.fakeCadvisor
mockCadvisor.On("Start").Return(nil)
mockCadvisor.On("MachineInfo").Return(machineInfo, nil)
versionInfo := &cadvisorapi.VersionInfo{
KernelVersion: "3.16.0-0.bpo.4-amd64",
ContainerOsVersion: "Debian GNU/Linux 7 (wheezy)",
}
mockCadvisor.On("VersionInfo").Return(versionInfo, nil)
// Make kubelet report that it has sufficient disk space.
if err := updateDiskSpacePolicy(kubelet, mockCadvisor, 500, 500, 200, 200, 100, 100); err != nil {
t.Fatalf("can't update disk space manager: %v", err)
}
expectedNode := &api.Node{
ObjectMeta: api.ObjectMeta{Name: testKubeletHostname},
Spec: api.NodeSpec{},
Status: api.NodeStatus{
Conditions: []api.NodeCondition{
{
Type: api.NodeOutOfDisk,
Status: api.ConditionFalse,
Reason: "KubeletHasSufficientDisk",
Message: fmt.Sprintf("kubelet has sufficient disk space available"),
LastHeartbeatTime: unversioned.Time{},
LastTransitionTime: unversioned.Time{},
},
{
Type: api.NodeMemoryPressure,
Status: api.ConditionFalse,
Reason: "KubeletHasSufficientMemory",
Message: fmt.Sprintf("kubelet has sufficient memory available"),
LastHeartbeatTime: unversioned.Time{},
LastTransitionTime: unversioned.Time{},
},
{
Type: api.NodeDiskPressure,
Status: api.ConditionFalse,
Reason: "KubeletHasNoDiskPressure",
Message: fmt.Sprintf("kubelet has no disk pressure"),
LastHeartbeatTime: unversioned.Time{},
LastTransitionTime: unversioned.Time{},
},
{
Type: api.NodeReady,
Status: api.ConditionTrue,
Reason: "KubeletReady",
Message: fmt.Sprintf("kubelet is posting ready status"),
LastHeartbeatTime: unversioned.Time{},
LastTransitionTime: unversioned.Time{},
},
},
NodeInfo: api.NodeSystemInfo{
MachineID: "123",
SystemUUID: "abc",
BootID: "1b3",
KernelVersion: "3.16.0-0.bpo.4-amd64",
OSImage: "Debian GNU/Linux 7 (wheezy)",
OperatingSystem: goruntime.GOOS,
Architecture: goruntime.GOARCH,
ContainerRuntimeVersion: "test://1.5.0",
KubeletVersion: version.Get().String(),
KubeProxyVersion: version.Get().String(),
},
Capacity: api.ResourceList{
api.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
api.ResourceMemory: *resource.NewQuantity(10E9, resource.BinarySI),
api.ResourcePods: *resource.NewQuantity(0, resource.DecimalSI),
api.ResourceNvidiaGPU: *resource.NewQuantity(0, resource.DecimalSI),
},
Allocatable: api.ResourceList{
api.ResourceCPU: *resource.NewMilliQuantity(1800, resource.DecimalSI),
api.ResourceMemory: *resource.NewQuantity(9900E6, resource.BinarySI),
api.ResourcePods: *resource.NewQuantity(0, resource.DecimalSI),
api.ResourceNvidiaGPU: *resource.NewQuantity(0, resource.DecimalSI),
},
Addresses: []api.NodeAddress{
{Type: api.NodeLegacyHostIP, Address: "127.0.0.1"},
{Type: api.NodeInternalIP, Address: "127.0.0.1"},
{Type: api.NodeHostName, Address: testKubeletHostname},
},
Images: expectedImageList,
},
}
kubelet.updateRuntimeUp()
if err := kubelet.updateNodeStatus(); err != nil {
t.Errorf("unexpected error: %v", err)
}
actions := kubeClient.Actions()
if len(actions) != 2 {
t.Fatalf("unexpected actions: %v", actions)
}
if !actions[1].Matches("update", "nodes") || actions[1].GetSubresource() != "status" {
t.Fatalf("unexpected actions: %v", actions)
}
updatedNode, ok := actions[1].(core.UpdateAction).GetObject().(*api.Node)
if !ok {
t.Errorf("unexpected object type")
}
for i, cond := range updatedNode.Status.Conditions {
if cond.LastHeartbeatTime.IsZero() {
t.Errorf("unexpected zero last probe timestamp for %v condition", cond.Type)
}
if cond.LastTransitionTime.IsZero() {
t.Errorf("unexpected zero last transition timestamp for %v condition", cond.Type)
}
updatedNode.Status.Conditions[i].LastHeartbeatTime = unversioned.Time{}
updatedNode.Status.Conditions[i].LastTransitionTime = unversioned.Time{}
}
// Version skew workaround. See: https://github.com/kubernetes/kubernetes/issues/16961
if updatedNode.Status.Conditions[len(updatedNode.Status.Conditions)-1].Type != api.NodeReady {
t.Errorf("unexpected node condition order. NodeReady should be last.")
}
if maxImagesInNodeStatus != len(updatedNode.Status.Images) {
t.Errorf("unexpected image list length in node status, expected: %v, got: %v", maxImagesInNodeStatus, len(updatedNode.Status.Images))
} else {
if !api.Semantic.DeepEqual(expectedNode, updatedNode) {
t.Errorf("unexpected objects: %s", diff.ObjectDiff(expectedNode, updatedNode))
}
}
}
func TestUpdateNewNodeOutOfDiskStatusWithTransitionFrequency(t *testing.T) {
testKubelet := newTestKubelet(t, false /* controllerAttachDetachEnabled */)
kubelet := testKubelet.kubelet
kubeClient := testKubelet.fakeKubeClient
kubeClient.ReactionChain = fake.NewSimpleClientset(&api.NodeList{Items: []api.Node{
{ObjectMeta: api.ObjectMeta{Name: testKubeletHostname}},
}}).ReactionChain
machineInfo := &cadvisorapi.MachineInfo{
MachineID: "123",
SystemUUID: "abc",
BootID: "1b3",
NumCores: 2,
MemoryCapacity: 1024,
}
mockCadvisor := testKubelet.fakeCadvisor
mockCadvisor.On("Start").Return(nil)
mockCadvisor.On("MachineInfo").Return(machineInfo, nil)
versionInfo := &cadvisorapi.VersionInfo{
KernelVersion: "3.16.0-0.bpo.4-amd64",
ContainerOsVersion: "Debian GNU/Linux 7 (wheezy)",
}
mockCadvisor.On("VersionInfo").Return(versionInfo, nil)
// Make Kubelet report that it has sufficient disk space.
if err := updateDiskSpacePolicy(kubelet, mockCadvisor, 500, 500, 200, 200, 100, 100); err != nil {
t.Fatalf("can't update disk space manager: %v", err)
}
kubelet.outOfDiskTransitionFrequency = 10 * time.Second
expectedNodeOutOfDiskCondition := api.NodeCondition{
Type: api.NodeOutOfDisk,
Status: api.ConditionFalse,
Reason: "KubeletHasSufficientDisk",
Message: fmt.Sprintf("kubelet has sufficient disk space available"),
LastHeartbeatTime: unversioned.Time{},
LastTransitionTime: unversioned.Time{},
}
kubelet.updateRuntimeUp()
if err := kubelet.updateNodeStatus(); err != nil {
t.Errorf("unexpected error: %v", err)
}
actions := kubeClient.Actions()
if len(actions) != 2 {
t.Fatalf("unexpected actions: %v", actions)
}
if !actions[1].Matches("update", "nodes") || actions[1].GetSubresource() != "status" {
t.Fatalf("unexpected actions: %v", actions)
}
updatedNode, ok := actions[1].(core.UpdateAction).GetObject().(*api.Node)
if !ok {
t.Errorf("unexpected object type")
}
var oodCondition api.NodeCondition
for i, cond := range updatedNode.Status.Conditions {
if cond.LastHeartbeatTime.IsZero() {
t.Errorf("unexpected zero last probe timestamp for %v condition", cond.Type)
}
if cond.LastTransitionTime.IsZero() {
t.Errorf("unexpected zero last transition timestamp for %v condition", cond.Type)
}
updatedNode.Status.Conditions[i].LastHeartbeatTime = unversioned.Time{}
updatedNode.Status.Conditions[i].LastTransitionTime = unversioned.Time{}
if cond.Type == api.NodeOutOfDisk {
oodCondition = updatedNode.Status.Conditions[i]
}
}
if !reflect.DeepEqual(expectedNodeOutOfDiskCondition, oodCondition) {
t.Errorf("unexpected objects: %s", diff.ObjectDiff(expectedNodeOutOfDiskCondition, oodCondition))
}
}
func TestUpdateExistingNodeStatus(t *testing.T) {
testKubelet := newTestKubelet(t, false /* controllerAttachDetachEnabled */)
kubelet := testKubelet.kubelet
kubeClient := testKubelet.fakeKubeClient
kubeClient.ReactionChain = fake.NewSimpleClientset(&api.NodeList{Items: []api.Node{
{
ObjectMeta: api.ObjectMeta{Name: testKubeletHostname},
Spec: api.NodeSpec{},
Status: api.NodeStatus{
Conditions: []api.NodeCondition{
{
Type: api.NodeOutOfDisk,
Status: api.ConditionTrue,
Reason: "KubeletOutOfDisk",
Message: "out of disk space",
LastHeartbeatTime: unversioned.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
LastTransitionTime: unversioned.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
},
{
Type: api.NodeMemoryPressure,
Status: api.ConditionFalse,
Reason: "KubeletHasSufficientMemory",
Message: fmt.Sprintf("kubelet has sufficient memory available"),
LastHeartbeatTime: unversioned.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
LastTransitionTime: unversioned.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
},
{
Type: api.NodeDiskPressure,
Status: api.ConditionFalse,
Reason: "KubeletHasSufficientDisk",
Message: fmt.Sprintf("kubelet has sufficient disk space available"),
LastHeartbeatTime: unversioned.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
LastTransitionTime: unversioned.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
},
{
Type: api.NodeReady,
Status: api.ConditionTrue,
Reason: "KubeletReady",
Message: fmt.Sprintf("kubelet is posting ready status"),
LastHeartbeatTime: unversioned.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
LastTransitionTime: unversioned.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
},
},
Capacity: api.ResourceList{
api.ResourceCPU: *resource.NewMilliQuantity(3000, resource.DecimalSI),
api.ResourceMemory: *resource.NewQuantity(20E9, resource.BinarySI),
api.ResourcePods: *resource.NewQuantity(0, resource.DecimalSI),
},
Allocatable: api.ResourceList{
api.ResourceCPU: *resource.NewMilliQuantity(2800, resource.DecimalSI),
api.ResourceMemory: *resource.NewQuantity(19900E6, resource.BinarySI),
api.ResourcePods: *resource.NewQuantity(0, resource.DecimalSI),
},
},
},
}}).ReactionChain
mockCadvisor := testKubelet.fakeCadvisor
mockCadvisor.On("Start").Return(nil)
machineInfo := &cadvisorapi.MachineInfo{
MachineID: "123",
SystemUUID: "abc",
BootID: "1b3",
NumCores: 2,
MemoryCapacity: 20E9,
}
mockCadvisor.On("MachineInfo").Return(machineInfo, nil)
versionInfo := &cadvisorapi.VersionInfo{
KernelVersion: "3.16.0-0.bpo.4-amd64",
ContainerOsVersion: "Debian GNU/Linux 7 (wheezy)",
}
mockCadvisor.On("VersionInfo").Return(versionInfo, nil)
// Make kubelet report that it is out of disk space.
if err := updateDiskSpacePolicy(kubelet, mockCadvisor, 500, 500, 50, 50, 100, 100); err != nil {
t.Fatalf("can't update disk space manager: %v", err)
}
expectedNode := &api.Node{
ObjectMeta: api.ObjectMeta{Name: testKubeletHostname},
Spec: api.NodeSpec{},
Status: api.NodeStatus{
Conditions: []api.NodeCondition{
{
Type: api.NodeOutOfDisk,
Status: api.ConditionTrue,
Reason: "KubeletOutOfDisk",
Message: "out of disk space",
LastHeartbeatTime: unversioned.Time{}, // placeholder
LastTransitionTime: unversioned.Time{}, // placeholder
},
{
Type: api.NodeMemoryPressure,
Status: api.ConditionFalse,
Reason: "KubeletHasSufficientMemory",
Message: fmt.Sprintf("kubelet has sufficient memory available"),
LastHeartbeatTime: unversioned.Time{},
LastTransitionTime: unversioned.Time{},
},
{
Type: api.NodeDiskPressure,
Status: api.ConditionFalse,
Reason: "KubeletHasSufficientDisk",
Message: fmt.Sprintf("kubelet has sufficient disk space available"),
LastHeartbeatTime: unversioned.Time{},
LastTransitionTime: unversioned.Time{},
},
{
Type: api.NodeReady,
Status: api.ConditionTrue,
Reason: "KubeletReady",
Message: fmt.Sprintf("kubelet is posting ready status"),
LastHeartbeatTime: unversioned.Time{}, // placeholder
LastTransitionTime: unversioned.Time{}, // placeholder
},
},
NodeInfo: api.NodeSystemInfo{
MachineID: "123",
SystemUUID: "abc",
BootID: "1b3",
KernelVersion: "3.16.0-0.bpo.4-amd64",
OSImage: "Debian GNU/Linux 7 (wheezy)",
OperatingSystem: goruntime.GOOS,
Architecture: goruntime.GOARCH,
ContainerRuntimeVersion: "test://1.5.0",
KubeletVersion: version.Get().String(),
KubeProxyVersion: version.Get().String(),
},
Capacity: api.ResourceList{
api.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
api.ResourceMemory: *resource.NewQuantity(20E9, resource.BinarySI),
api.ResourcePods: *resource.NewQuantity(0, resource.DecimalSI),
api.ResourceNvidiaGPU: *resource.NewQuantity(0, resource.DecimalSI),
},
Allocatable: api.ResourceList{
api.ResourceCPU: *resource.NewMilliQuantity(1800, resource.DecimalSI),
api.ResourceMemory: *resource.NewQuantity(19900E6, resource.BinarySI),
api.ResourcePods: *resource.NewQuantity(0, resource.DecimalSI),
api.ResourceNvidiaGPU: *resource.NewQuantity(0, resource.DecimalSI),
},
Addresses: []api.NodeAddress{
{Type: api.NodeLegacyHostIP, Address: "127.0.0.1"},
{Type: api.NodeInternalIP, Address: "127.0.0.1"},
{Type: api.NodeHostName, Address: testKubeletHostname},
},
// images will be sorted from max to min in node status.
Images: []api.ContainerImage{
{
Names: []string{"gcr.io/google_containers:v3", "gcr.io/google_containers:v4"},
SizeBytes: 456,
},
{
Names: []string{"gcr.io/google_containers:v1", "gcr.io/google_containers:v2"},
SizeBytes: 123,
},
},
},
}
kubelet.updateRuntimeUp()
if err := kubelet.updateNodeStatus(); err != nil {
t.Errorf("unexpected error: %v", err)
}
actions := kubeClient.Actions()
if len(actions) != 2 {
t.Errorf("unexpected actions: %v", actions)
}
updateAction, ok := actions[1].(core.UpdateAction)
if !ok {
t.Errorf("unexpected action type. expected UpdateAction, got %#v", actions[1])
}
updatedNode, ok := updateAction.GetObject().(*api.Node)
if !ok {
t.Errorf("unexpected object type")
}
for i, cond := range updatedNode.Status.Conditions {
// Expect LastProbeTime to be updated to Now, while LastTransitionTime to be the same.
if old := unversioned.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC).Time; reflect.DeepEqual(cond.LastHeartbeatTime.Rfc3339Copy().UTC(), old) {
t.Errorf("Condition %v LastProbeTime: expected \n%v\n, got \n%v", cond.Type, unversioned.Now(), old)
}
if got, want := cond.LastTransitionTime.Rfc3339Copy().UTC(), unversioned.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC).Time; !reflect.DeepEqual(got, want) {
t.Errorf("Condition %v LastTransitionTime: expected \n%#v\n, got \n%#v", cond.Type, want, got)
}
updatedNode.Status.Conditions[i].LastHeartbeatTime = unversioned.Time{}
updatedNode.Status.Conditions[i].LastTransitionTime = unversioned.Time{}
}
// Version skew workaround. See: https://github.com/kubernetes/kubernetes/issues/16961
if updatedNode.Status.Conditions[len(updatedNode.Status.Conditions)-1].Type != api.NodeReady {
t.Errorf("unexpected node condition order. NodeReady should be last.")
}
if !api.Semantic.DeepEqual(expectedNode, updatedNode) {
t.Errorf("unexpected objects: %s", diff.ObjectDiff(expectedNode, updatedNode))
}
}
func TestUpdateExistingNodeOutOfDiskStatusWithTransitionFrequency(t *testing.T) {
testKubelet := newTestKubelet(t, false /* controllerAttachDetachEnabled */)
kubelet := testKubelet.kubelet
clock := testKubelet.fakeClock
kubeClient := testKubelet.fakeKubeClient
kubeClient.ReactionChain = fake.NewSimpleClientset(&api.NodeList{Items: []api.Node{
{
ObjectMeta: api.ObjectMeta{Name: testKubeletHostname},
Spec: api.NodeSpec{},
Status: api.NodeStatus{
Conditions: []api.NodeCondition{
{
Type: api.NodeReady,
Status: api.ConditionTrue,
Reason: "KubeletReady",
Message: fmt.Sprintf("kubelet is posting ready status"),
LastHeartbeatTime: unversioned.NewTime(clock.Now()),
LastTransitionTime: unversioned.NewTime(clock.Now()),
},
{
Type: api.NodeOutOfDisk,
Status: api.ConditionTrue,
Reason: "KubeletOutOfDisk",
Message: "out of disk space",
LastHeartbeatTime: unversioned.NewTime(clock.Now()),
LastTransitionTime: unversioned.NewTime(clock.Now()),
},
},
},
},
}}).ReactionChain
mockCadvisor := testKubelet.fakeCadvisor
machineInfo := &cadvisorapi.MachineInfo{
MachineID: "123",
SystemUUID: "abc",
BootID: "1b3",
NumCores: 2,
MemoryCapacity: 1024,
}
fsInfo := cadvisorapiv2.FsInfo{
Device: "123",
}
mockCadvisor.On("Start").Return(nil)
mockCadvisor.On("MachineInfo").Return(machineInfo, nil)
mockCadvisor.On("ImagesFsInfo").Return(fsInfo, nil)
mockCadvisor.On("RootFsInfo").Return(fsInfo, nil)
versionInfo := &cadvisorapi.VersionInfo{
KernelVersion: "3.16.0-0.bpo.4-amd64",
ContainerOsVersion: "Debian GNU/Linux 7 (wheezy)",
DockerVersion: "1.5.0",
}
mockCadvisor.On("VersionInfo").Return(versionInfo, nil)
kubelet.outOfDiskTransitionFrequency = 5 * time.Second
ood := api.NodeCondition{
Type: api.NodeOutOfDisk,
Status: api.ConditionTrue,
Reason: "KubeletOutOfDisk",
Message: "out of disk space",
LastHeartbeatTime: unversioned.NewTime(clock.Now()), // placeholder
LastTransitionTime: unversioned.NewTime(clock.Now()), // placeholder
}
noOod := api.NodeCondition{
Type: api.NodeOutOfDisk,
Status: api.ConditionFalse,
Reason: "KubeletHasSufficientDisk",
Message: fmt.Sprintf("kubelet has sufficient disk space available"),
LastHeartbeatTime: unversioned.NewTime(clock.Now()), // placeholder
LastTransitionTime: unversioned.NewTime(clock.Now()), // placeholder
}
testCases := []struct {
rootFsAvail uint64
dockerFsAvail uint64
expected api.NodeCondition
}{
{
// NodeOutOfDisk==false
rootFsAvail: 200,
dockerFsAvail: 200,
expected: ood,
},
{
// NodeOutOfDisk==true
rootFsAvail: 50,
dockerFsAvail: 200,
expected: ood,
},
{
// NodeOutOfDisk==false
rootFsAvail: 200,
dockerFsAvail: 200,
expected: ood,
},
{
// NodeOutOfDisk==true
rootFsAvail: 200,
dockerFsAvail: 50,
expected: ood,
},
{
// NodeOutOfDisk==false
rootFsAvail: 200,
dockerFsAvail: 200,
expected: noOod,
},
}
kubelet.updateRuntimeUp()
for tcIdx, tc := range testCases {
// Step by a second
clock.Step(1 * time.Second)
// Setup expected times.
tc.expected.LastHeartbeatTime = unversioned.NewTime(clock.Now())
// In the last case, there should be a status transition for NodeOutOfDisk
if tcIdx == len(testCases)-1 {
tc.expected.LastTransitionTime = unversioned.NewTime(clock.Now())
}
// Make kubelet report that it has sufficient disk space
if err := updateDiskSpacePolicy(kubelet, mockCadvisor, 500, 500, tc.rootFsAvail, tc.dockerFsAvail, 100, 100); err != nil {
t.Fatalf("can't update disk space manager: %v", err)
}
if err := kubelet.updateNodeStatus(); err != nil {
t.Errorf("unexpected error: %v", err)
}
actions := kubeClient.Actions()
if len(actions) != 2 {
t.Errorf("%d. unexpected actions: %v", tcIdx, actions)
}
updateAction, ok := actions[1].(core.UpdateAction)
if !ok {
t.Errorf("%d. unexpected action type. expected UpdateAction, got %#v", tcIdx, actions[1])
}
updatedNode, ok := updateAction.GetObject().(*api.Node)
if !ok {
t.Errorf("%d. unexpected object type", tcIdx)
}
kubeClient.ClearActions()
var oodCondition api.NodeCondition
for i, cond := range updatedNode.Status.Conditions {
if cond.Type == api.NodeOutOfDisk {
oodCondition = updatedNode.Status.Conditions[i]
}
}
if !reflect.DeepEqual(tc.expected, oodCondition) {
t.Errorf("%d.\nunexpected objects: %s", tcIdx, diff.ObjectDiff(tc.expected, oodCondition))
}
}
}
func TestUpdateNodeStatusWithRuntimeStateError(t *testing.T) {
testKubelet := newTestKubelet(t, false /* controllerAttachDetachEnabled */)
kubelet := testKubelet.kubelet
clock := testKubelet.fakeClock
kubeClient := testKubelet.fakeKubeClient
kubeClient.ReactionChain = fake.NewSimpleClientset(&api.NodeList{Items: []api.Node{
{ObjectMeta: api.ObjectMeta{Name: testKubeletHostname}},
}}).ReactionChain
mockCadvisor := testKubelet.fakeCadvisor
mockCadvisor.On("Start").Return(nil)
machineInfo := &cadvisorapi.MachineInfo{
MachineID: "123",
SystemUUID: "abc",
BootID: "1b3",
NumCores: 2,
MemoryCapacity: 10E9,
}
mockCadvisor.On("MachineInfo").Return(machineInfo, nil)
versionInfo := &cadvisorapi.VersionInfo{
KernelVersion: "3.16.0-0.bpo.4-amd64",
ContainerOsVersion: "Debian GNU/Linux 7 (wheezy)",
}
mockCadvisor.On("VersionInfo").Return(versionInfo, nil)
// Make kubelet report that it has sufficient disk space.
if err := updateDiskSpacePolicy(kubelet, mockCadvisor, 500, 500, 200, 200, 100, 100); err != nil {
t.Fatalf("can't update disk space manager: %v", err)
}
expectedNode := &api.Node{
ObjectMeta: api.ObjectMeta{Name: testKubeletHostname},
Spec: api.NodeSpec{},
Status: api.NodeStatus{
Conditions: []api.NodeCondition{
{
Type: api.NodeOutOfDisk,
Status: api.ConditionFalse,
Reason: "KubeletHasSufficientDisk",
Message: "kubelet has sufficient disk space available",
LastHeartbeatTime: unversioned.Time{},
LastTransitionTime: unversioned.Time{},
},
{
Type: api.NodeMemoryPressure,
Status: api.ConditionFalse,
Reason: "KubeletHasSufficientMemory",
Message: fmt.Sprintf("kubelet has sufficient memory available"),
LastHeartbeatTime: unversioned.Time{},
LastTransitionTime: unversioned.Time{},
},
{
Type: api.NodeDiskPressure,
Status: api.ConditionFalse,
Reason: "KubeletHasNoDiskPressure",
Message: fmt.Sprintf("kubelet has no disk pressure"),
LastHeartbeatTime: unversioned.Time{},
LastTransitionTime: unversioned.Time{},
},
{}, //placeholder
},
NodeInfo: api.NodeSystemInfo{
MachineID: "123",
SystemUUID: "abc",
BootID: "1b3",
KernelVersion: "3.16.0-0.bpo.4-amd64",
OSImage: "Debian GNU/Linux 7 (wheezy)",
OperatingSystem: goruntime.GOOS,
Architecture: goruntime.GOARCH,
ContainerRuntimeVersion: "test://1.5.0",
KubeletVersion: version.Get().String(),
KubeProxyVersion: version.Get().String(),
},
Capacity: api.ResourceList{
api.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
api.ResourceMemory: *resource.NewQuantity(10E9, resource.BinarySI),
api.ResourcePods: *resource.NewQuantity(0, resource.DecimalSI),
api.ResourceNvidiaGPU: *resource.NewQuantity(0, resource.DecimalSI),
},
Allocatable: api.ResourceList{
api.ResourceCPU: *resource.NewMilliQuantity(1800, resource.DecimalSI),
api.ResourceMemory: *resource.NewQuantity(9900E6, resource.BinarySI),
api.ResourcePods: *resource.NewQuantity(0, resource.DecimalSI),
api.ResourceNvidiaGPU: *resource.NewQuantity(0, resource.DecimalSI),
},
Addresses: []api.NodeAddress{
{Type: api.NodeLegacyHostIP, Address: "127.0.0.1"},
{Type: api.NodeInternalIP, Address: "127.0.0.1"},
{Type: api.NodeHostName, Address: testKubeletHostname},
},
Images: []api.ContainerImage{
{
Names: []string{"gcr.io/google_containers:v3", "gcr.io/google_containers:v4"},
SizeBytes: 456,
},
{
Names: []string{"gcr.io/google_containers:v1", "gcr.io/google_containers:v2"},
SizeBytes: 123,
},
},
},
}
checkNodeStatus := func(status api.ConditionStatus, reason string) {
kubeClient.ClearActions()
if err := kubelet.updateNodeStatus(); err != nil {
t.Errorf("unexpected error: %v", err)
}
actions := kubeClient.Actions()
if len(actions) != 2 {
t.Fatalf("unexpected actions: %v", actions)
}
if !actions[1].Matches("update", "nodes") || actions[1].GetSubresource() != "status" {
t.Fatalf("unexpected actions: %v", actions)
}
updatedNode, ok := actions[1].(core.UpdateAction).GetObject().(*api.Node)
if !ok {
t.Errorf("unexpected action type. expected UpdateAction, got %#v", actions[1])
}
for i, cond := range updatedNode.Status.Conditions {
if cond.LastHeartbeatTime.IsZero() {
t.Errorf("unexpected zero last probe timestamp")
}
if cond.LastTransitionTime.IsZero() {
t.Errorf("unexpected zero last transition timestamp")
}
updatedNode.Status.Conditions[i].LastHeartbeatTime = unversioned.Time{}
updatedNode.Status.Conditions[i].LastTransitionTime = unversioned.Time{}
}
// Version skew workaround. See: https://github.com/kubernetes/kubernetes/issues/16961
lastIndex := len(updatedNode.Status.Conditions) - 1
if updatedNode.Status.Conditions[lastIndex].Type != api.NodeReady {
t.Errorf("unexpected node condition order. NodeReady should be last.")
}
if updatedNode.Status.Conditions[lastIndex].Message == "" {
t.Errorf("unexpected empty condition message")
}
updatedNode.Status.Conditions[lastIndex].Message = ""
expectedNode.Status.Conditions[lastIndex] = api.NodeCondition{
Type: api.NodeReady,
Status: status,
Reason: reason,
LastHeartbeatTime: unversioned.Time{},
LastTransitionTime: unversioned.Time{},
}
if !api.Semantic.DeepEqual(expectedNode, updatedNode) {
t.Errorf("unexpected objects: %s", diff.ObjectDiff(expectedNode, updatedNode))
}
}
// TODO(random-liu): Refactor the unit test to be table driven test.
// Should report kubelet not ready if the runtime check is out of date
clock.SetTime(time.Now().Add(-maxWaitForContainerRuntime))
kubelet.updateRuntimeUp()
checkNodeStatus(api.ConditionFalse, "KubeletNotReady")
// Should report kubelet ready if the runtime check is updated
clock.SetTime(time.Now())
kubelet.updateRuntimeUp()
checkNodeStatus(api.ConditionTrue, "KubeletReady")
// Should report kubelet not ready if the runtime check is out of date
clock.SetTime(time.Now().Add(-maxWaitForContainerRuntime))
kubelet.updateRuntimeUp()
checkNodeStatus(api.ConditionFalse, "KubeletNotReady")
// Should report kubelet not ready if the runtime check failed
fakeRuntime := testKubelet.fakeRuntime
// Inject error into fake runtime status check, node should be NotReady
fakeRuntime.StatusErr = fmt.Errorf("injected runtime status error")
clock.SetTime(time.Now())
kubelet.updateRuntimeUp()
checkNodeStatus(api.ConditionFalse, "KubeletNotReady")
// Test cri integration.
kubelet.kubeletConfiguration.ExperimentalRuntimeIntegrationType = "cri"
fakeRuntime.StatusErr = nil
// Should report node not ready if runtime status is nil.
fakeRuntime.RuntimeStatus = nil
kubelet.updateRuntimeUp()
checkNodeStatus(api.ConditionFalse, "KubeletNotReady")
// Should report node not ready if runtime status is empty.
fakeRuntime.RuntimeStatus = &kubecontainer.RuntimeStatus{}
kubelet.updateRuntimeUp()
checkNodeStatus(api.ConditionFalse, "KubeletNotReady")
// Should report node not ready if RuntimeReady is false.
fakeRuntime.RuntimeStatus = &kubecontainer.RuntimeStatus{
Conditions: []kubecontainer.RuntimeCondition{
{Type: kubecontainer.RuntimeReady, Status: false},
{Type: kubecontainer.NetworkReady, Status: true},
},
}
kubelet.updateRuntimeUp()
checkNodeStatus(api.ConditionFalse, "KubeletNotReady")
// Should report node ready if RuntimeReady is true.
fakeRuntime.RuntimeStatus = &kubecontainer.RuntimeStatus{
Conditions: []kubecontainer.RuntimeCondition{
{Type: kubecontainer.RuntimeReady, Status: true},
{Type: kubecontainer.NetworkReady, Status: true},
},
}
kubelet.updateRuntimeUp()
checkNodeStatus(api.ConditionTrue, "KubeletReady")
// Should report node not ready if NetworkReady is false.
fakeRuntime.RuntimeStatus = &kubecontainer.RuntimeStatus{
Conditions: []kubecontainer.RuntimeCondition{
{Type: kubecontainer.RuntimeReady, Status: true},
{Type: kubecontainer.NetworkReady, Status: false},
},
}
kubelet.updateRuntimeUp()
checkNodeStatus(api.ConditionFalse, "KubeletNotReady")
}
func TestUpdateNodeStatusError(t *testing.T) {
testKubelet := newTestKubelet(t, false /* controllerAttachDetachEnabled */)
kubelet := testKubelet.kubelet
// No matching node for the kubelet
testKubelet.fakeKubeClient.ReactionChain = fake.NewSimpleClientset(&api.NodeList{Items: []api.Node{}}).ReactionChain
if err := kubelet.updateNodeStatus(); err == nil {
t.Errorf("unexpected non error: %v", err)
}
if len(testKubelet.fakeKubeClient.Actions()) != nodeStatusUpdateRetry {
t.Errorf("unexpected actions: %v", testKubelet.fakeKubeClient.Actions())
}
}
func TestRegisterWithApiServer(t *testing.T) {
testKubelet := newTestKubelet(t, false /* controllerAttachDetachEnabled */)
kubelet := testKubelet.kubelet
kubeClient := testKubelet.fakeKubeClient
kubeClient.AddReactor("create", "nodes", func(action core.Action) (bool, runtime.Object, error) {
// Return an error on create.
return true, &api.Node{}, &apierrors.StatusError{
ErrStatus: unversioned.Status{Reason: unversioned.StatusReasonAlreadyExists},
}
})
kubeClient.AddReactor("get", "nodes", func(action core.Action) (bool, runtime.Object, error) {
// Return an existing (matching) node on get.
return true, &api.Node{
ObjectMeta: api.ObjectMeta{Name: testKubeletHostname},
Spec: api.NodeSpec{ExternalID: testKubeletHostname},
}, nil
})
kubeClient.AddReactor("*", "*", func(action core.Action) (bool, runtime.Object, error) {
return true, nil, fmt.Errorf("no reaction implemented for %s", action)
})
machineInfo := &cadvisorapi.MachineInfo{
MachineID: "123",
SystemUUID: "abc",
BootID: "1b3",
NumCores: 2,
MemoryCapacity: 1024,
}
mockCadvisor := testKubelet.fakeCadvisor
mockCadvisor.On("MachineInfo").Return(machineInfo, nil)
versionInfo := &cadvisorapi.VersionInfo{
KernelVersion: "3.16.0-0.bpo.4-amd64",
ContainerOsVersion: "Debian GNU/Linux 7 (wheezy)",
DockerVersion: "1.5.0",
}
mockCadvisor.On("VersionInfo").Return(versionInfo, nil)
mockCadvisor.On("ImagesFsInfo").Return(cadvisorapiv2.FsInfo{
Usage: 400 * mb,
Capacity: 1000 * mb,
Available: 600 * mb,
}, nil)
mockCadvisor.On("RootFsInfo").Return(cadvisorapiv2.FsInfo{
Usage: 9 * mb,
Capacity: 10 * mb,
}, nil)
done := make(chan struct{})
go func() {
kubelet.registerWithApiServer()
done <- struct{}{}
}()
select {
case <-time.After(wait.ForeverTestTimeout):
t.Errorf("timed out waiting for registration")
case <-done:
return
}
}
func TestTryRegisterWithApiServer(t *testing.T) {
alreadyExists := &apierrors.StatusError{
ErrStatus: unversioned.Status{Reason: unversioned.StatusReasonAlreadyExists},
}
conflict := &apierrors.StatusError{
ErrStatus: unversioned.Status{Reason: unversioned.StatusReasonConflict},
}
newNode := func(cmad bool, externalID string) *api.Node {
node := &api.Node{
ObjectMeta: api.ObjectMeta{},
Spec: api.NodeSpec{
ExternalID: externalID,
},
}
if cmad {
node.Annotations = make(map[string]string)
node.Annotations[volumehelper.ControllerManagedAttachAnnotation] = "true"
}
return node
}
cases := []struct {
name string
newNode *api.Node
existingNode *api.Node
createError error
getError error
updateError error
deleteError error
expectedResult bool
expectedActions int
testSavedNode bool
savedNodeIndex int
savedNodeCMAD bool
}{
{
name: "success case - new node",
newNode: &api.Node{},
expectedResult: true,
expectedActions: 1,
},
{
name: "success case - existing node - no change in CMAD",
newNode: newNode(true, "a"),
createError: alreadyExists,
existingNode: newNode(true, "a"),
expectedResult: true,
expectedActions: 2,
},
{
name: "success case - existing node - CMAD disabled",
newNode: newNode(false, "a"),
createError: alreadyExists,
existingNode: newNode(true, "a"),
expectedResult: true,
expectedActions: 3,
testSavedNode: true,
savedNodeIndex: 2,
savedNodeCMAD: false,
},
{
name: "success case - existing node - CMAD enabled",
newNode: newNode(true, "a"),
createError: alreadyExists,
existingNode: newNode(false, "a"),
expectedResult: true,
expectedActions: 3,
testSavedNode: true,
savedNodeIndex: 2,
savedNodeCMAD: true,
},
{
name: "success case - external ID changed",
newNode: newNode(false, "b"),
createError: alreadyExists,
existingNode: newNode(false, "a"),
expectedResult: false,
expectedActions: 3,
},
{
name: "create failed",
newNode: newNode(false, "b"),
createError: conflict,
expectedResult: false,
expectedActions: 1,
},
{
name: "get existing node failed",
newNode: newNode(false, "a"),
createError: alreadyExists,
getError: conflict,
expectedResult: false,
expectedActions: 2,
},
{
name: "update existing node failed",
newNode: newNode(false, "a"),
createError: alreadyExists,
existingNode: newNode(true, "a"),
updateError: conflict,
expectedResult: false,
expectedActions: 3,
},
{
name: "delete existing node failed",
newNode: newNode(false, "b"),
createError: alreadyExists,
existingNode: newNode(false, "a"),
deleteError: conflict,
expectedResult: false,
expectedActions: 3,
},
}
notImplemented := func(action core.Action) (bool, runtime.Object, error) {
return true, nil, fmt.Errorf("no reaction implemented for %s", action)
}
for _, tc := range cases {
testKubelet := newTestKubelet(t, false /* controllerAttachDetachEnabled is a don't-care for this test */)
kubelet := testKubelet.kubelet
kubeClient := testKubelet.fakeKubeClient
kubeClient.AddReactor("create", "nodes", func(action core.Action) (bool, runtime.Object, error) {
return true, nil, tc.createError
})
kubeClient.AddReactor("get", "nodes", func(action core.Action) (bool, runtime.Object, error) {
// Return an existing (matching) node on get.
return true, tc.existingNode, tc.getError
})
kubeClient.AddReactor("update", "nodes", func(action core.Action) (bool, runtime.Object, error) {
if action.GetSubresource() == "status" {
return true, nil, tc.updateError
}
return notImplemented(action)
})
kubeClient.AddReactor("delete", "nodes", func(action core.Action) (bool, runtime.Object, error) {
return true, nil, tc.deleteError
})
kubeClient.AddReactor("*", "*", func(action core.Action) (bool, runtime.Object, error) {
return notImplemented(action)
})
result := kubelet.tryRegisterWithApiServer(tc.newNode)
if e, a := tc.expectedResult, result; e != a {
t.Errorf("%v: unexpected result; expected %v got %v", tc.name, e, a)
continue
}
actions := kubeClient.Actions()
if e, a := tc.expectedActions, len(actions); e != a {
t.Errorf("%v: unexpected number of actions, expected %v, got %v", tc.name, e, a)
}
if tc.testSavedNode {
var savedNode *api.Node
var ok bool
t.Logf("actions: %v: %+v", len(actions), actions)
action := actions[tc.savedNodeIndex]
if action.GetVerb() == "create" {
createAction := action.(core.CreateAction)
savedNode, ok = createAction.GetObject().(*api.Node)
if !ok {
t.Errorf("%v: unexpected type; couldn't convert to *api.Node: %+v", tc.name, createAction.GetObject())
continue
}
} else if action.GetVerb() == "update" {
updateAction := action.(core.UpdateAction)
savedNode, ok = updateAction.GetObject().(*api.Node)
if !ok {
t.Errorf("%v: unexpected type; couldn't convert to *api.Node: %+v", tc.name, updateAction.GetObject())
continue
}
}
actualCMAD, _ := strconv.ParseBool(savedNode.Annotations[volumehelper.ControllerManagedAttachAnnotation])
if e, a := tc.savedNodeCMAD, actualCMAD; e != a {
t.Errorf("%v: unexpected attach-detach value on saved node; expected %v got %v", tc.name, e, a)
}
}
}
}