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6515e3573e
Automatic merge from submit-queue Cleanup kubelet eviction manager tests It cleans up kubelet eviction manager tests Extracted parts of tests that were similar to each other to functions
1087 lines
40 KiB
Go
1087 lines
40 KiB
Go
/*
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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 eviction
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import (
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"testing"
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"time"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/api/resource"
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"k8s.io/kubernetes/pkg/client/record"
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statsapi "k8s.io/kubernetes/pkg/kubelet/api/v1alpha1/stats"
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"k8s.io/kubernetes/pkg/kubelet/lifecycle"
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"k8s.io/kubernetes/pkg/types"
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"k8s.io/kubernetes/pkg/util/clock"
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)
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// mockPodKiller is used to testing which pod is killed
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type mockPodKiller struct {
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pod *api.Pod
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status api.PodStatus
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gracePeriodOverride *int64
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}
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// killPodNow records the pod that was killed
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func (m *mockPodKiller) killPodNow(pod *api.Pod, status api.PodStatus, gracePeriodOverride *int64) error {
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m.pod = pod
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m.status = status
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m.gracePeriodOverride = gracePeriodOverride
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return nil
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}
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// mockDiskInfoProvider is used to simulate testing.
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type mockDiskInfoProvider struct {
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dedicatedImageFs bool
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}
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// HasDedicatedImageFs returns the mocked value
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func (m *mockDiskInfoProvider) HasDedicatedImageFs() (bool, error) {
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return m.dedicatedImageFs, nil
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}
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// mockImageGC is used to simulate invoking image garbage collection.
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type mockImageGC struct {
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err error
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freed int64
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invoked bool
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}
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// DeleteUnusedImages returns the mocked values.
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func (m *mockImageGC) DeleteUnusedImages() (int64, error) {
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m.invoked = true
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return m.freed, m.err
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}
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func makePodWithMemoryStats(name string, requests api.ResourceList, limits api.ResourceList, memoryWorkingSet string) (*api.Pod, statsapi.PodStats) {
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pod := newPod(name, []api.Container{
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newContainer(name, requests, limits),
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}, nil)
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podStats := newPodMemoryStats(pod, resource.MustParse(memoryWorkingSet))
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return pod, podStats
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}
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func makePodWithDiskStats(name string, requests api.ResourceList, limits api.ResourceList, rootFsUsed, logsUsed, perLocalVolumeUsed string) (*api.Pod, statsapi.PodStats) {
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pod := newPod(name, []api.Container{
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newContainer(name, requests, limits),
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}, nil)
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podStats := newPodDiskStats(pod, parseQuantity(rootFsUsed), parseQuantity(logsUsed), parseQuantity(perLocalVolumeUsed))
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return pod, podStats
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}
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func makeMemoryStats(nodeAvailableBytes string, podStats map[*api.Pod]statsapi.PodStats) *statsapi.Summary {
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val := resource.MustParse(nodeAvailableBytes)
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availableBytes := uint64(val.Value())
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WorkingSetBytes := uint64(val.Value())
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result := &statsapi.Summary{
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Node: statsapi.NodeStats{
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Memory: &statsapi.MemoryStats{
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AvailableBytes: &availableBytes,
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WorkingSetBytes: &WorkingSetBytes,
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},
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},
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Pods: []statsapi.PodStats{},
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}
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for _, podStat := range podStats {
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result.Pods = append(result.Pods, podStat)
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}
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return result
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}
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func makeDiskStats(rootFsAvailableBytes, imageFsAvailableBytes string, podStats map[*api.Pod]statsapi.PodStats) *statsapi.Summary {
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rootFsVal := resource.MustParse(rootFsAvailableBytes)
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rootFsBytes := uint64(rootFsVal.Value())
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rootFsCapacityBytes := uint64(rootFsVal.Value() * 2)
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imageFsVal := resource.MustParse(imageFsAvailableBytes)
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imageFsBytes := uint64(imageFsVal.Value())
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imageFsCapacityBytes := uint64(imageFsVal.Value() * 2)
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result := &statsapi.Summary{
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Node: statsapi.NodeStats{
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Fs: &statsapi.FsStats{
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AvailableBytes: &rootFsBytes,
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CapacityBytes: &rootFsCapacityBytes,
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},
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Runtime: &statsapi.RuntimeStats{
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ImageFs: &statsapi.FsStats{
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AvailableBytes: &imageFsBytes,
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CapacityBytes: &imageFsCapacityBytes,
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},
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},
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},
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Pods: []statsapi.PodStats{},
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}
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for _, podStat := range podStats {
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result.Pods = append(result.Pods, podStat)
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}
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return result
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}
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type podToMake struct {
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name string
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requests api.ResourceList
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limits api.ResourceList
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memoryWorkingSet string
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rootFsUsed string
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logsFsUsed string
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logsFsInodesUsed string
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rootFsInodesUsed string
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perLocalVolumeUsed string
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perLocalVolumeInodesUsed string
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}
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// TestMemoryPressure
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func TestMemoryPressure(t *testing.T) {
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podMaker := makePodWithMemoryStats
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summaryStatsMaker := makeMemoryStats
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podsToMake := []podToMake{
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{name: "guaranteed-low", requests: newResourceList("100m", "1Gi"), limits: newResourceList("100m", "1Gi"), memoryWorkingSet: "200Mi"},
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{name: "guaranteed-high", requests: newResourceList("100m", "1Gi"), limits: newResourceList("100m", "1Gi"), memoryWorkingSet: "800Mi"},
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{name: "burstable-low", requests: newResourceList("100m", "100Mi"), limits: newResourceList("200m", "1Gi"), memoryWorkingSet: "300Mi"},
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{name: "burstable-high", requests: newResourceList("100m", "100Mi"), limits: newResourceList("200m", "1Gi"), memoryWorkingSet: "800Mi"},
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{name: "best-effort-low", requests: newResourceList("", ""), limits: newResourceList("", ""), memoryWorkingSet: "300Mi"},
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{name: "best-effort-high", requests: newResourceList("", ""), limits: newResourceList("", ""), memoryWorkingSet: "500Mi"},
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}
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pods := []*api.Pod{}
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podStats := map[*api.Pod]statsapi.PodStats{}
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for _, podToMake := range podsToMake {
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pod, podStat := podMaker(podToMake.name, podToMake.requests, podToMake.limits, podToMake.memoryWorkingSet)
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pods = append(pods, pod)
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podStats[pod] = podStat
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}
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podToEvict := pods[5]
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activePodsFunc := func() []*api.Pod {
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return pods
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}
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fakeClock := clock.NewFakeClock(time.Now())
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podKiller := &mockPodKiller{}
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diskInfoProvider := &mockDiskInfoProvider{dedicatedImageFs: false}
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imageGC := &mockImageGC{freed: int64(0), err: nil}
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nodeRef := &api.ObjectReference{Kind: "Node", Name: "test", UID: types.UID("test"), Namespace: ""}
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config := Config{
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MaxPodGracePeriodSeconds: 5,
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PressureTransitionPeriod: time.Minute * 5,
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Thresholds: []Threshold{
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{
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Signal: SignalMemoryAvailable,
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Operator: OpLessThan,
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Value: ThresholdValue{
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Quantity: quantityMustParse("1Gi"),
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},
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},
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{
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Signal: SignalMemoryAvailable,
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Operator: OpLessThan,
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Value: ThresholdValue{
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Quantity: quantityMustParse("2Gi"),
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},
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GracePeriod: time.Minute * 2,
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},
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},
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}
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summaryProvider := &fakeSummaryProvider{result: summaryStatsMaker("2Gi", podStats)}
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manager := &managerImpl{
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clock: fakeClock,
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killPodFunc: podKiller.killPodNow,
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imageGC: imageGC,
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config: config,
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recorder: &record.FakeRecorder{},
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summaryProvider: summaryProvider,
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nodeRef: nodeRef,
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nodeConditionsLastObservedAt: nodeConditionsObservedAt{},
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thresholdsFirstObservedAt: thresholdsObservedAt{},
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}
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// create a best effort pod to test admission
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bestEffortPodToAdmit, _ := podMaker("best-admit", newResourceList("", ""), newResourceList("", ""), "0Gi")
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burstablePodToAdmit, _ := podMaker("burst-admit", newResourceList("100m", "100Mi"), newResourceList("200m", "200Mi"), "0Gi")
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// synchronize
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manager.synchronize(diskInfoProvider, activePodsFunc)
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// we should not have memory pressure
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if manager.IsUnderMemoryPressure() {
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t.Errorf("Manager should not report memory pressure")
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}
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// try to admit our pods (they should succeed)
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expected := []bool{true, true}
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for i, pod := range []*api.Pod{bestEffortPodToAdmit, burstablePodToAdmit} {
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if result := manager.Admit(&lifecycle.PodAdmitAttributes{Pod: pod}); expected[i] != result.Admit {
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t.Errorf("Admit pod: %v, expected: %v, actual: %v", pod, expected[i], result.Admit)
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}
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}
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// induce soft threshold
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fakeClock.Step(1 * time.Minute)
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summaryProvider.result = summaryStatsMaker("1500Mi", podStats)
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manager.synchronize(diskInfoProvider, activePodsFunc)
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// we should have memory pressure
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if !manager.IsUnderMemoryPressure() {
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t.Errorf("Manager should report memory pressure since soft threshold was met")
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}
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// verify no pod was yet killed because there has not yet been enough time passed.
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if podKiller.pod != nil {
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t.Errorf("Manager should not have killed a pod yet, but killed: %v", podKiller.pod.Name)
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}
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// step forward in time pass the grace period
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fakeClock.Step(3 * time.Minute)
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summaryProvider.result = summaryStatsMaker("1500Mi", podStats)
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manager.synchronize(diskInfoProvider, activePodsFunc)
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// we should have memory pressure
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if !manager.IsUnderMemoryPressure() {
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t.Errorf("Manager should report memory pressure since soft threshold was met")
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}
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// verify the right pod was killed with the right grace period.
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if podKiller.pod != podToEvict {
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t.Errorf("Manager chose to kill pod: %v, but should have chosen %v", podKiller.pod.Name, podToEvict.Name)
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}
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if podKiller.gracePeriodOverride == nil {
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t.Errorf("Manager chose to kill pod but should have had a grace period override.")
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}
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observedGracePeriod := *podKiller.gracePeriodOverride
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if observedGracePeriod != manager.config.MaxPodGracePeriodSeconds {
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t.Errorf("Manager chose to kill pod with incorrect grace period. Expected: %d, actual: %d", manager.config.MaxPodGracePeriodSeconds, observedGracePeriod)
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}
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// reset state
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podKiller.pod = nil
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podKiller.gracePeriodOverride = nil
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// remove memory pressure
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fakeClock.Step(20 * time.Minute)
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summaryProvider.result = summaryStatsMaker("3Gi", podStats)
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manager.synchronize(diskInfoProvider, activePodsFunc)
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// we should not have memory pressure
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if manager.IsUnderMemoryPressure() {
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t.Errorf("Manager should not report memory pressure")
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}
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// induce memory pressure!
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fakeClock.Step(1 * time.Minute)
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summaryProvider.result = summaryStatsMaker("500Mi", podStats)
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manager.synchronize(diskInfoProvider, activePodsFunc)
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// we should have memory pressure
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if !manager.IsUnderMemoryPressure() {
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t.Errorf("Manager should report memory pressure")
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}
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// check the right pod was killed
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if podKiller.pod != podToEvict {
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t.Errorf("Manager chose to kill pod: %v, but should have chosen %v", podKiller.pod.Name, podToEvict.Name)
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}
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observedGracePeriod = *podKiller.gracePeriodOverride
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if observedGracePeriod != int64(0) {
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t.Errorf("Manager chose to kill pod with incorrect grace period. Expected: %d, actual: %d", 0, observedGracePeriod)
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}
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// the best-effort pod should not admit, burstable should
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expected = []bool{false, true}
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for i, pod := range []*api.Pod{bestEffortPodToAdmit, burstablePodToAdmit} {
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if result := manager.Admit(&lifecycle.PodAdmitAttributes{Pod: pod}); expected[i] != result.Admit {
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t.Errorf("Admit pod: %v, expected: %v, actual: %v", pod, expected[i], result.Admit)
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}
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}
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// reduce memory pressure
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fakeClock.Step(1 * time.Minute)
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summaryProvider.result = summaryStatsMaker("2Gi", podStats)
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podKiller.pod = nil // reset state
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manager.synchronize(diskInfoProvider, activePodsFunc)
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// we should have memory pressure (because transition period not yet met)
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if !manager.IsUnderMemoryPressure() {
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t.Errorf("Manager should report memory pressure")
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}
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// no pod should have been killed
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if podKiller.pod != nil {
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t.Errorf("Manager chose to kill pod: %v when no pod should have been killed", podKiller.pod.Name)
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}
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// the best-effort pod should not admit, burstable should
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expected = []bool{false, true}
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for i, pod := range []*api.Pod{bestEffortPodToAdmit, burstablePodToAdmit} {
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if result := manager.Admit(&lifecycle.PodAdmitAttributes{Pod: pod}); expected[i] != result.Admit {
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t.Errorf("Admit pod: %v, expected: %v, actual: %v", pod, expected[i], result.Admit)
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}
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}
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// move the clock past transition period to ensure that we stop reporting pressure
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fakeClock.Step(5 * time.Minute)
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summaryProvider.result = summaryStatsMaker("2Gi", podStats)
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podKiller.pod = nil // reset state
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manager.synchronize(diskInfoProvider, activePodsFunc)
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// we should not have memory pressure (because transition period met)
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if manager.IsUnderMemoryPressure() {
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t.Errorf("Manager should not report memory pressure")
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}
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// no pod should have been killed
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if podKiller.pod != nil {
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t.Errorf("Manager chose to kill pod: %v when no pod should have been killed", podKiller.pod.Name)
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}
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// all pods should admit now
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expected = []bool{true, true}
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for i, pod := range []*api.Pod{bestEffortPodToAdmit, burstablePodToAdmit} {
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if result := manager.Admit(&lifecycle.PodAdmitAttributes{Pod: pod}); expected[i] != result.Admit {
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t.Errorf("Admit pod: %v, expected: %v, actual: %v", pod, expected[i], result.Admit)
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}
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}
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}
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// parseQuantity parses the specified value (if provided) otherwise returns 0 value
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func parseQuantity(value string) resource.Quantity {
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if len(value) == 0 {
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return resource.MustParse("0")
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}
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return resource.MustParse(value)
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}
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func TestDiskPressureNodeFs(t *testing.T) {
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podMaker := makePodWithDiskStats
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summaryStatsMaker := makeDiskStats
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podsToMake := []podToMake{
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{name: "guaranteed-low", requests: newResourceList("100m", "1Gi"), limits: newResourceList("100m", "1Gi"), rootFsUsed: "200Mi"},
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{name: "guaranteed-high", requests: newResourceList("100m", "1Gi"), limits: newResourceList("100m", "1Gi"), rootFsUsed: "800Mi"},
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{name: "burstable-low", requests: newResourceList("100m", "100Mi"), limits: newResourceList("200m", "1Gi"), logsFsUsed: "300Mi"},
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{name: "burstable-high", requests: newResourceList("100m", "100Mi"), limits: newResourceList("200m", "1Gi"), rootFsUsed: "800Mi"},
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{name: "best-effort-low", requests: newResourceList("", ""), limits: newResourceList("", ""), perLocalVolumeUsed: "300Mi"},
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{name: "best-effort-high", requests: newResourceList("", ""), limits: newResourceList("", ""), rootFsUsed: "500Mi"},
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}
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pods := []*api.Pod{}
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podStats := map[*api.Pod]statsapi.PodStats{}
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for _, podToMake := range podsToMake {
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pod, podStat := podMaker(podToMake.name, podToMake.requests, podToMake.limits, podToMake.rootFsUsed, podToMake.logsFsUsed, podToMake.perLocalVolumeUsed)
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pods = append(pods, pod)
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podStats[pod] = podStat
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}
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podToEvict := pods[5]
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activePodsFunc := func() []*api.Pod {
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return pods
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}
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fakeClock := clock.NewFakeClock(time.Now())
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podKiller := &mockPodKiller{}
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diskInfoProvider := &mockDiskInfoProvider{dedicatedImageFs: false}
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imageGC := &mockImageGC{freed: int64(0), err: nil}
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nodeRef := &api.ObjectReference{Kind: "Node", Name: "test", UID: types.UID("test"), Namespace: ""}
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config := Config{
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MaxPodGracePeriodSeconds: 5,
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PressureTransitionPeriod: time.Minute * 5,
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Thresholds: []Threshold{
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{
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Signal: SignalNodeFsAvailable,
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Operator: OpLessThan,
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Value: ThresholdValue{
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Quantity: quantityMustParse("1Gi"),
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},
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},
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{
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Signal: SignalNodeFsAvailable,
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Operator: OpLessThan,
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Value: ThresholdValue{
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Quantity: quantityMustParse("2Gi"),
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},
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GracePeriod: time.Minute * 2,
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},
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},
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}
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summaryProvider := &fakeSummaryProvider{result: summaryStatsMaker("16Gi", "200Gi", podStats)}
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manager := &managerImpl{
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clock: fakeClock,
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killPodFunc: podKiller.killPodNow,
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imageGC: imageGC,
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config: config,
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recorder: &record.FakeRecorder{},
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summaryProvider: summaryProvider,
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nodeRef: nodeRef,
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nodeConditionsLastObservedAt: nodeConditionsObservedAt{},
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thresholdsFirstObservedAt: thresholdsObservedAt{},
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}
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// create a best effort pod to test admission
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podToAdmit, _ := podMaker("pod-to-admit", newResourceList("", ""), newResourceList("", ""), "0Gi", "0Gi", "0Gi")
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// synchronize
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manager.synchronize(diskInfoProvider, activePodsFunc)
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|
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// we should not have disk pressure
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if manager.IsUnderDiskPressure() {
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t.Errorf("Manager should not report disk pressure")
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}
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// try to admit our pod (should succeed)
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if result := manager.Admit(&lifecycle.PodAdmitAttributes{Pod: podToAdmit}); !result.Admit {
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t.Errorf("Admit pod: %v, expected: %v, actual: %v", podToAdmit, true, result.Admit)
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}
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// induce soft threshold
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fakeClock.Step(1 * time.Minute)
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summaryProvider.result = summaryStatsMaker("1.5Gi", "200Gi", podStats)
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manager.synchronize(diskInfoProvider, activePodsFunc)
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// we should have disk pressure
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if !manager.IsUnderDiskPressure() {
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t.Errorf("Manager should report disk pressure since soft threshold was met")
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}
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|
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// verify no pod was yet killed because there has not yet been enough time passed.
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if podKiller.pod != nil {
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t.Errorf("Manager should not have killed a pod yet, but killed: %v", podKiller.pod.Name)
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}
|
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|
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// step forward in time pass the grace period
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fakeClock.Step(3 * time.Minute)
|
|
summaryProvider.result = summaryStatsMaker("1.5Gi", "200Gi", podStats)
|
|
manager.synchronize(diskInfoProvider, activePodsFunc)
|
|
|
|
// we should have disk pressure
|
|
if !manager.IsUnderDiskPressure() {
|
|
t.Errorf("Manager should report disk pressure since soft threshold was met")
|
|
}
|
|
|
|
// verify the right pod was killed with the right grace period.
|
|
if podKiller.pod != podToEvict {
|
|
t.Errorf("Manager chose to kill pod: %v, but should have chosen %v", podKiller.pod.Name, podToEvict.Name)
|
|
}
|
|
if podKiller.gracePeriodOverride == nil {
|
|
t.Errorf("Manager chose to kill pod but should have had a grace period override.")
|
|
}
|
|
observedGracePeriod := *podKiller.gracePeriodOverride
|
|
if observedGracePeriod != manager.config.MaxPodGracePeriodSeconds {
|
|
t.Errorf("Manager chose to kill pod with incorrect grace period. Expected: %d, actual: %d", manager.config.MaxPodGracePeriodSeconds, observedGracePeriod)
|
|
}
|
|
// reset state
|
|
podKiller.pod = nil
|
|
podKiller.gracePeriodOverride = nil
|
|
|
|
// remove disk pressure
|
|
fakeClock.Step(20 * time.Minute)
|
|
summaryProvider.result = summaryStatsMaker("16Gi", "200Gi", podStats)
|
|
manager.synchronize(diskInfoProvider, activePodsFunc)
|
|
|
|
// we should not have disk pressure
|
|
if manager.IsUnderDiskPressure() {
|
|
t.Errorf("Manager should not report disk pressure")
|
|
}
|
|
|
|
// induce disk pressure!
|
|
fakeClock.Step(1 * time.Minute)
|
|
summaryProvider.result = summaryStatsMaker("500Mi", "200Gi", podStats)
|
|
manager.synchronize(diskInfoProvider, activePodsFunc)
|
|
|
|
// we should have disk pressure
|
|
if !manager.IsUnderDiskPressure() {
|
|
t.Errorf("Manager should report disk pressure")
|
|
}
|
|
|
|
// check the right pod was killed
|
|
if podKiller.pod != podToEvict {
|
|
t.Errorf("Manager chose to kill pod: %v, but should have chosen %v", podKiller.pod.Name, podToEvict.Name)
|
|
}
|
|
observedGracePeriod = *podKiller.gracePeriodOverride
|
|
if observedGracePeriod != int64(0) {
|
|
t.Errorf("Manager chose to kill pod with incorrect grace period. Expected: %d, actual: %d", 0, observedGracePeriod)
|
|
}
|
|
|
|
// try to admit our pod (should fail)
|
|
if result := manager.Admit(&lifecycle.PodAdmitAttributes{Pod: podToAdmit}); result.Admit {
|
|
t.Errorf("Admit pod: %v, expected: %v, actual: %v", podToAdmit, false, result.Admit)
|
|
}
|
|
|
|
// reduce disk pressure
|
|
fakeClock.Step(1 * time.Minute)
|
|
summaryProvider.result = summaryStatsMaker("16Gi", "200Gi", podStats)
|
|
podKiller.pod = nil // reset state
|
|
manager.synchronize(diskInfoProvider, activePodsFunc)
|
|
|
|
// we should have disk pressure (because transition period not yet met)
|
|
if !manager.IsUnderDiskPressure() {
|
|
t.Errorf("Manager should report disk pressure")
|
|
}
|
|
|
|
// no pod should have been killed
|
|
if podKiller.pod != nil {
|
|
t.Errorf("Manager chose to kill pod: %v when no pod should have been killed", podKiller.pod.Name)
|
|
}
|
|
|
|
// try to admit our pod (should fail)
|
|
if result := manager.Admit(&lifecycle.PodAdmitAttributes{Pod: podToAdmit}); result.Admit {
|
|
t.Errorf("Admit pod: %v, expected: %v, actual: %v", podToAdmit, false, result.Admit)
|
|
}
|
|
|
|
// move the clock past transition period to ensure that we stop reporting pressure
|
|
fakeClock.Step(5 * time.Minute)
|
|
summaryProvider.result = summaryStatsMaker("16Gi", "200Gi", podStats)
|
|
podKiller.pod = nil // reset state
|
|
manager.synchronize(diskInfoProvider, activePodsFunc)
|
|
|
|
// we should not have disk pressure (because transition period met)
|
|
if manager.IsUnderDiskPressure() {
|
|
t.Errorf("Manager should not report disk pressure")
|
|
}
|
|
|
|
// no pod should have been killed
|
|
if podKiller.pod != nil {
|
|
t.Errorf("Manager chose to kill pod: %v when no pod should have been killed", podKiller.pod.Name)
|
|
}
|
|
|
|
// try to admit our pod (should succeed)
|
|
if result := manager.Admit(&lifecycle.PodAdmitAttributes{Pod: podToAdmit}); !result.Admit {
|
|
t.Errorf("Admit pod: %v, expected: %v, actual: %v", podToAdmit, true, result.Admit)
|
|
}
|
|
}
|
|
|
|
// TestMinReclaim verifies that min-reclaim works as desired.
|
|
func TestMinReclaim(t *testing.T) {
|
|
podMaker := makePodWithMemoryStats
|
|
summaryStatsMaker := makeMemoryStats
|
|
podsToMake := []podToMake{
|
|
{name: "guaranteed-low", requests: newResourceList("100m", "1Gi"), limits: newResourceList("100m", "1Gi"), memoryWorkingSet: "200Mi"},
|
|
{name: "guaranteed-high", requests: newResourceList("100m", "1Gi"), limits: newResourceList("100m", "1Gi"), memoryWorkingSet: "800Mi"},
|
|
{name: "burstable-low", requests: newResourceList("100m", "100Mi"), limits: newResourceList("200m", "1Gi"), memoryWorkingSet: "300Mi"},
|
|
{name: "burstable-high", requests: newResourceList("100m", "100Mi"), limits: newResourceList("200m", "1Gi"), memoryWorkingSet: "800Mi"},
|
|
{name: "best-effort-low", requests: newResourceList("", ""), limits: newResourceList("", ""), memoryWorkingSet: "300Mi"},
|
|
{name: "best-effort-high", requests: newResourceList("", ""), limits: newResourceList("", ""), memoryWorkingSet: "500Mi"},
|
|
}
|
|
pods := []*api.Pod{}
|
|
podStats := map[*api.Pod]statsapi.PodStats{}
|
|
for _, podToMake := range podsToMake {
|
|
pod, podStat := podMaker(podToMake.name, podToMake.requests, podToMake.limits, podToMake.memoryWorkingSet)
|
|
pods = append(pods, pod)
|
|
podStats[pod] = podStat
|
|
}
|
|
podToEvict := pods[5]
|
|
activePodsFunc := func() []*api.Pod {
|
|
return pods
|
|
}
|
|
|
|
fakeClock := clock.NewFakeClock(time.Now())
|
|
podKiller := &mockPodKiller{}
|
|
diskInfoProvider := &mockDiskInfoProvider{dedicatedImageFs: false}
|
|
imageGC := &mockImageGC{freed: int64(0), err: nil}
|
|
nodeRef := &api.ObjectReference{Kind: "Node", Name: "test", UID: types.UID("test"), Namespace: ""}
|
|
|
|
config := Config{
|
|
MaxPodGracePeriodSeconds: 5,
|
|
PressureTransitionPeriod: time.Minute * 5,
|
|
Thresholds: []Threshold{
|
|
{
|
|
Signal: SignalMemoryAvailable,
|
|
Operator: OpLessThan,
|
|
Value: ThresholdValue{
|
|
Quantity: quantityMustParse("1Gi"),
|
|
},
|
|
MinReclaim: &ThresholdValue{
|
|
Quantity: quantityMustParse("500Mi"),
|
|
},
|
|
},
|
|
},
|
|
}
|
|
summaryProvider := &fakeSummaryProvider{result: summaryStatsMaker("2Gi", podStats)}
|
|
manager := &managerImpl{
|
|
clock: fakeClock,
|
|
killPodFunc: podKiller.killPodNow,
|
|
imageGC: imageGC,
|
|
config: config,
|
|
recorder: &record.FakeRecorder{},
|
|
summaryProvider: summaryProvider,
|
|
nodeRef: nodeRef,
|
|
nodeConditionsLastObservedAt: nodeConditionsObservedAt{},
|
|
thresholdsFirstObservedAt: thresholdsObservedAt{},
|
|
}
|
|
|
|
// synchronize
|
|
manager.synchronize(diskInfoProvider, activePodsFunc)
|
|
|
|
// we should not have memory pressure
|
|
if manager.IsUnderMemoryPressure() {
|
|
t.Errorf("Manager should not report memory pressure")
|
|
}
|
|
|
|
// induce memory pressure!
|
|
fakeClock.Step(1 * time.Minute)
|
|
summaryProvider.result = summaryStatsMaker("500Mi", podStats)
|
|
manager.synchronize(diskInfoProvider, activePodsFunc)
|
|
|
|
// we should have memory pressure
|
|
if !manager.IsUnderMemoryPressure() {
|
|
t.Errorf("Manager should report memory pressure")
|
|
}
|
|
|
|
// check the right pod was killed
|
|
if podKiller.pod != podToEvict {
|
|
t.Errorf("Manager chose to kill pod: %v, but should have chosen %v", podKiller.pod.Name, podToEvict.Name)
|
|
}
|
|
observedGracePeriod := *podKiller.gracePeriodOverride
|
|
if observedGracePeriod != int64(0) {
|
|
t.Errorf("Manager chose to kill pod with incorrect grace period. Expected: %d, actual: %d", 0, observedGracePeriod)
|
|
}
|
|
|
|
// reduce memory pressure, but not below the min-reclaim amount
|
|
fakeClock.Step(1 * time.Minute)
|
|
summaryProvider.result = summaryStatsMaker("1.2Gi", podStats)
|
|
podKiller.pod = nil // reset state
|
|
manager.synchronize(diskInfoProvider, activePodsFunc)
|
|
|
|
// we should have memory pressure (because transition period not yet met)
|
|
if !manager.IsUnderMemoryPressure() {
|
|
t.Errorf("Manager should report memory pressure")
|
|
}
|
|
|
|
// check the right pod was killed
|
|
if podKiller.pod != podToEvict {
|
|
t.Errorf("Manager chose to kill pod: %v, but should have chosen %v", podKiller.pod.Name, podToEvict.Name)
|
|
}
|
|
observedGracePeriod = *podKiller.gracePeriodOverride
|
|
if observedGracePeriod != int64(0) {
|
|
t.Errorf("Manager chose to kill pod with incorrect grace period. Expected: %d, actual: %d", 0, observedGracePeriod)
|
|
}
|
|
|
|
// reduce memory pressure and ensure the min-reclaim amount
|
|
fakeClock.Step(1 * time.Minute)
|
|
summaryProvider.result = summaryStatsMaker("2Gi", podStats)
|
|
podKiller.pod = nil // reset state
|
|
manager.synchronize(diskInfoProvider, activePodsFunc)
|
|
|
|
// we should have memory pressure (because transition period not yet met)
|
|
if !manager.IsUnderMemoryPressure() {
|
|
t.Errorf("Manager should report memory pressure")
|
|
}
|
|
|
|
// no pod should have been killed
|
|
if podKiller.pod != nil {
|
|
t.Errorf("Manager chose to kill pod: %v when no pod should have been killed", podKiller.pod.Name)
|
|
}
|
|
|
|
// move the clock past transition period to ensure that we stop reporting pressure
|
|
fakeClock.Step(5 * time.Minute)
|
|
summaryProvider.result = summaryStatsMaker("2Gi", podStats)
|
|
podKiller.pod = nil // reset state
|
|
manager.synchronize(diskInfoProvider, activePodsFunc)
|
|
|
|
// we should not have memory pressure (because transition period met)
|
|
if manager.IsUnderMemoryPressure() {
|
|
t.Errorf("Manager should not report memory pressure")
|
|
}
|
|
|
|
// no pod should have been killed
|
|
if podKiller.pod != nil {
|
|
t.Errorf("Manager chose to kill pod: %v when no pod should have been killed", podKiller.pod.Name)
|
|
}
|
|
}
|
|
|
|
func TestNodeReclaimFuncs(t *testing.T) {
|
|
podMaker := makePodWithDiskStats
|
|
summaryStatsMaker := makeDiskStats
|
|
podsToMake := []podToMake{
|
|
{name: "guaranteed-low", requests: newResourceList("100m", "1Gi"), limits: newResourceList("100m", "1Gi"), rootFsUsed: "200Mi"},
|
|
{name: "guaranteed-high", requests: newResourceList("100m", "1Gi"), limits: newResourceList("100m", "1Gi"), rootFsUsed: "800Mi"},
|
|
{name: "burstable-low", requests: newResourceList("100m", "100Mi"), limits: newResourceList("200m", "1Gi"), rootFsUsed: "300Mi"},
|
|
{name: "burstable-high", requests: newResourceList("100m", "100Mi"), limits: newResourceList("200m", "1Gi"), rootFsUsed: "800Mi"},
|
|
{name: "best-effort-low", requests: newResourceList("", ""), limits: newResourceList("", ""), rootFsUsed: "300Mi"},
|
|
{name: "best-effort-high", requests: newResourceList("", ""), limits: newResourceList("", ""), rootFsUsed: "500Mi"},
|
|
}
|
|
pods := []*api.Pod{}
|
|
podStats := map[*api.Pod]statsapi.PodStats{}
|
|
for _, podToMake := range podsToMake {
|
|
pod, podStat := podMaker(podToMake.name, podToMake.requests, podToMake.limits, podToMake.rootFsUsed, podToMake.logsFsUsed, podToMake.perLocalVolumeUsed)
|
|
pods = append(pods, pod)
|
|
podStats[pod] = podStat
|
|
}
|
|
podToEvict := pods[5]
|
|
activePodsFunc := func() []*api.Pod {
|
|
return pods
|
|
}
|
|
|
|
fakeClock := clock.NewFakeClock(time.Now())
|
|
podKiller := &mockPodKiller{}
|
|
diskInfoProvider := &mockDiskInfoProvider{dedicatedImageFs: false}
|
|
imageGcFree := resource.MustParse("700Mi")
|
|
imageGC := &mockImageGC{freed: imageGcFree.Value(), err: nil}
|
|
nodeRef := &api.ObjectReference{Kind: "Node", Name: "test", UID: types.UID("test"), Namespace: ""}
|
|
|
|
config := Config{
|
|
MaxPodGracePeriodSeconds: 5,
|
|
PressureTransitionPeriod: time.Minute * 5,
|
|
Thresholds: []Threshold{
|
|
{
|
|
Signal: SignalNodeFsAvailable,
|
|
Operator: OpLessThan,
|
|
Value: ThresholdValue{
|
|
Quantity: quantityMustParse("1Gi"),
|
|
},
|
|
MinReclaim: &ThresholdValue{
|
|
Quantity: quantityMustParse("500Mi"),
|
|
},
|
|
},
|
|
},
|
|
}
|
|
summaryProvider := &fakeSummaryProvider{result: summaryStatsMaker("16Gi", "200Gi", podStats)}
|
|
manager := &managerImpl{
|
|
clock: fakeClock,
|
|
killPodFunc: podKiller.killPodNow,
|
|
imageGC: imageGC,
|
|
config: config,
|
|
recorder: &record.FakeRecorder{},
|
|
summaryProvider: summaryProvider,
|
|
nodeRef: nodeRef,
|
|
nodeConditionsLastObservedAt: nodeConditionsObservedAt{},
|
|
thresholdsFirstObservedAt: thresholdsObservedAt{},
|
|
}
|
|
|
|
// synchronize
|
|
manager.synchronize(diskInfoProvider, activePodsFunc)
|
|
|
|
// we should not have disk pressure
|
|
if manager.IsUnderDiskPressure() {
|
|
t.Errorf("Manager should not report disk pressure")
|
|
}
|
|
|
|
// induce hard threshold
|
|
fakeClock.Step(1 * time.Minute)
|
|
summaryProvider.result = summaryStatsMaker(".9Gi", "200Gi", podStats)
|
|
manager.synchronize(diskInfoProvider, activePodsFunc)
|
|
|
|
// we should have disk pressure
|
|
if !manager.IsUnderDiskPressure() {
|
|
t.Errorf("Manager should report disk pressure since soft threshold was met")
|
|
}
|
|
|
|
// verify image gc was invoked
|
|
if !imageGC.invoked {
|
|
t.Errorf("Manager should have invoked image gc")
|
|
}
|
|
|
|
// verify no pod was killed because image gc was sufficient
|
|
if podKiller.pod != nil {
|
|
t.Errorf("Manager should not have killed a pod, but killed: %v", podKiller.pod.Name)
|
|
}
|
|
|
|
// reset state
|
|
imageGC.invoked = false
|
|
|
|
// remove disk pressure
|
|
fakeClock.Step(20 * time.Minute)
|
|
summaryProvider.result = summaryStatsMaker("16Gi", "200Gi", podStats)
|
|
manager.synchronize(diskInfoProvider, activePodsFunc)
|
|
|
|
// we should not have disk pressure
|
|
if manager.IsUnderDiskPressure() {
|
|
t.Errorf("Manager should not report disk pressure")
|
|
}
|
|
|
|
// induce disk pressure!
|
|
fakeClock.Step(1 * time.Minute)
|
|
summaryProvider.result = summaryStatsMaker("400Mi", "200Gi", podStats)
|
|
manager.synchronize(diskInfoProvider, activePodsFunc)
|
|
|
|
// we should have disk pressure
|
|
if !manager.IsUnderDiskPressure() {
|
|
t.Errorf("Manager should report disk pressure")
|
|
}
|
|
|
|
// ensure image gc was invoked
|
|
if !imageGC.invoked {
|
|
t.Errorf("Manager should have invoked image gc")
|
|
}
|
|
|
|
// check the right pod was killed
|
|
if podKiller.pod != podToEvict {
|
|
t.Errorf("Manager chose to kill pod: %v, but should have chosen %v", podKiller.pod.Name, podToEvict.Name)
|
|
}
|
|
observedGracePeriod := *podKiller.gracePeriodOverride
|
|
if observedGracePeriod != int64(0) {
|
|
t.Errorf("Manager chose to kill pod with incorrect grace period. Expected: %d, actual: %d", 0, observedGracePeriod)
|
|
}
|
|
|
|
// reduce disk pressure
|
|
fakeClock.Step(1 * time.Minute)
|
|
summaryProvider.result = summaryStatsMaker("16Gi", "200Gi", podStats)
|
|
imageGC.invoked = false // reset state
|
|
podKiller.pod = nil // reset state
|
|
manager.synchronize(diskInfoProvider, activePodsFunc)
|
|
|
|
// we should have disk pressure (because transition period not yet met)
|
|
if !manager.IsUnderDiskPressure() {
|
|
t.Errorf("Manager should report disk pressure")
|
|
}
|
|
|
|
// no image gc should have occurred
|
|
if imageGC.invoked {
|
|
t.Errorf("Manager chose to perform image gc when it was not neeed")
|
|
}
|
|
|
|
// no pod should have been killed
|
|
if podKiller.pod != nil {
|
|
t.Errorf("Manager chose to kill pod: %v when no pod should have been killed", podKiller.pod.Name)
|
|
}
|
|
|
|
// move the clock past transition period to ensure that we stop reporting pressure
|
|
fakeClock.Step(5 * time.Minute)
|
|
summaryProvider.result = summaryStatsMaker("16Gi", "200Gi", podStats)
|
|
imageGC.invoked = false // reset state
|
|
podKiller.pod = nil // reset state
|
|
manager.synchronize(diskInfoProvider, activePodsFunc)
|
|
|
|
// we should not have disk pressure (because transition period met)
|
|
if manager.IsUnderDiskPressure() {
|
|
t.Errorf("Manager should not report disk pressure")
|
|
}
|
|
|
|
// no image gc should have occurred
|
|
if imageGC.invoked {
|
|
t.Errorf("Manager chose to perform image gc when it was not neeed")
|
|
}
|
|
|
|
// no pod should have been killed
|
|
if podKiller.pod != nil {
|
|
t.Errorf("Manager chose to kill pod: %v when no pod should have been killed", podKiller.pod.Name)
|
|
}
|
|
}
|
|
|
|
func TestInodePressureNodeFsInodes(t *testing.T) {
|
|
podMaker := func(name string, requests api.ResourceList, limits api.ResourceList, rootInodes, logInodes, volumeInodes string) (*api.Pod, statsapi.PodStats) {
|
|
pod := newPod(name, []api.Container{
|
|
newContainer(name, requests, limits),
|
|
}, nil)
|
|
podStats := newPodInodeStats(pod, parseQuantity(rootInodes), parseQuantity(logInodes), parseQuantity(volumeInodes))
|
|
return pod, podStats
|
|
}
|
|
summaryStatsMaker := func(rootFsInodesFree, rootFsInodes string, podStats map[*api.Pod]statsapi.PodStats) *statsapi.Summary {
|
|
rootFsInodesFreeVal := resource.MustParse(rootFsInodesFree)
|
|
internalRootFsInodesFree := uint64(rootFsInodesFreeVal.Value())
|
|
rootFsInodesVal := resource.MustParse(rootFsInodes)
|
|
internalRootFsInodes := uint64(rootFsInodesVal.Value())
|
|
result := &statsapi.Summary{
|
|
Node: statsapi.NodeStats{
|
|
Fs: &statsapi.FsStats{
|
|
InodesFree: &internalRootFsInodesFree,
|
|
Inodes: &internalRootFsInodes,
|
|
},
|
|
},
|
|
Pods: []statsapi.PodStats{},
|
|
}
|
|
for _, podStat := range podStats {
|
|
result.Pods = append(result.Pods, podStat)
|
|
}
|
|
return result
|
|
}
|
|
podsToMake := []podToMake{
|
|
{name: "guaranteed-low", requests: newResourceList("100m", "1Gi"), limits: newResourceList("100m", "1Gi"), rootFsInodesUsed: "200Mi"},
|
|
{name: "guaranteed-high", requests: newResourceList("100m", "1Gi"), limits: newResourceList("100m", "1Gi"), rootFsInodesUsed: "800Mi"},
|
|
{name: "burstable-low", requests: newResourceList("100m", "100Mi"), limits: newResourceList("200m", "1Gi"), rootFsInodesUsed: "300Mi"},
|
|
{name: "burstable-high", requests: newResourceList("100m", "100Mi"), limits: newResourceList("200m", "1Gi"), rootFsInodesUsed: "800Mi"},
|
|
{name: "best-effort-low", requests: newResourceList("", ""), limits: newResourceList("", ""), rootFsInodesUsed: "300Mi"},
|
|
{name: "best-effort-high", requests: newResourceList("", ""), limits: newResourceList("", ""), rootFsInodesUsed: "800Mi"},
|
|
}
|
|
pods := []*api.Pod{}
|
|
podStats := map[*api.Pod]statsapi.PodStats{}
|
|
for _, podToMake := range podsToMake {
|
|
pod, podStat := podMaker(podToMake.name, podToMake.requests, podToMake.limits, podToMake.rootFsInodesUsed, podToMake.logsFsInodesUsed, podToMake.perLocalVolumeInodesUsed)
|
|
pods = append(pods, pod)
|
|
podStats[pod] = podStat
|
|
}
|
|
podToEvict := pods[5]
|
|
activePodsFunc := func() []*api.Pod {
|
|
return pods
|
|
}
|
|
|
|
fakeClock := clock.NewFakeClock(time.Now())
|
|
podKiller := &mockPodKiller{}
|
|
diskInfoProvider := &mockDiskInfoProvider{dedicatedImageFs: false}
|
|
imageGC := &mockImageGC{freed: int64(0), err: nil}
|
|
nodeRef := &api.ObjectReference{Kind: "Node", Name: "test", UID: types.UID("test"), Namespace: ""}
|
|
|
|
config := Config{
|
|
MaxPodGracePeriodSeconds: 5,
|
|
PressureTransitionPeriod: time.Minute * 5,
|
|
Thresholds: []Threshold{
|
|
{
|
|
Signal: SignalNodeFsInodesFree,
|
|
Operator: OpLessThan,
|
|
Value: ThresholdValue{
|
|
Quantity: quantityMustParse("1Mi"),
|
|
},
|
|
},
|
|
{
|
|
Signal: SignalNodeFsInodesFree,
|
|
Operator: OpLessThan,
|
|
Value: ThresholdValue{
|
|
Quantity: quantityMustParse("2Mi"),
|
|
},
|
|
GracePeriod: time.Minute * 2,
|
|
},
|
|
},
|
|
}
|
|
summaryProvider := &fakeSummaryProvider{result: summaryStatsMaker("3Mi", "4Mi", podStats)}
|
|
manager := &managerImpl{
|
|
clock: fakeClock,
|
|
killPodFunc: podKiller.killPodNow,
|
|
imageGC: imageGC,
|
|
config: config,
|
|
recorder: &record.FakeRecorder{},
|
|
summaryProvider: summaryProvider,
|
|
nodeRef: nodeRef,
|
|
nodeConditionsLastObservedAt: nodeConditionsObservedAt{},
|
|
thresholdsFirstObservedAt: thresholdsObservedAt{},
|
|
}
|
|
|
|
// create a best effort pod to test admission
|
|
podToAdmit, _ := podMaker("pod-to-admit", newResourceList("", ""), newResourceList("", ""), "0", "0", "0")
|
|
|
|
// synchronize
|
|
manager.synchronize(diskInfoProvider, activePodsFunc)
|
|
|
|
// we should not have disk pressure
|
|
if manager.IsUnderDiskPressure() {
|
|
t.Errorf("Manager should not report inode pressure")
|
|
}
|
|
|
|
// try to admit our pod (should succeed)
|
|
if result := manager.Admit(&lifecycle.PodAdmitAttributes{Pod: podToAdmit}); !result.Admit {
|
|
t.Errorf("Admit pod: %v, expected: %v, actual: %v", podToAdmit, true, result.Admit)
|
|
}
|
|
|
|
// induce soft threshold
|
|
fakeClock.Step(1 * time.Minute)
|
|
summaryProvider.result = summaryStatsMaker("1.5Mi", "4Mi", podStats)
|
|
manager.synchronize(diskInfoProvider, activePodsFunc)
|
|
|
|
// we should have disk pressure
|
|
if !manager.IsUnderDiskPressure() {
|
|
t.Errorf("Manager should report inode pressure since soft threshold was met")
|
|
}
|
|
|
|
// verify no pod was yet killed because there has not yet been enough time passed.
|
|
if podKiller.pod != nil {
|
|
t.Errorf("Manager should not have killed a pod yet, but killed: %v", podKiller.pod.Name)
|
|
}
|
|
|
|
// step forward in time pass the grace period
|
|
fakeClock.Step(3 * time.Minute)
|
|
summaryProvider.result = summaryStatsMaker("1.5Mi", "4Mi", podStats)
|
|
manager.synchronize(diskInfoProvider, activePodsFunc)
|
|
|
|
// we should have disk pressure
|
|
if !manager.IsUnderDiskPressure() {
|
|
t.Errorf("Manager should report inode pressure since soft threshold was met")
|
|
}
|
|
|
|
// verify the right pod was killed with the right grace period.
|
|
if podKiller.pod != podToEvict {
|
|
t.Errorf("Manager chose to kill pod: %v, but should have chosen %v", podKiller.pod.Name, podToEvict.Name)
|
|
}
|
|
if podKiller.gracePeriodOverride == nil {
|
|
t.Errorf("Manager chose to kill pod but should have had a grace period override.")
|
|
}
|
|
observedGracePeriod := *podKiller.gracePeriodOverride
|
|
if observedGracePeriod != manager.config.MaxPodGracePeriodSeconds {
|
|
t.Errorf("Manager chose to kill pod with incorrect grace period. Expected: %d, actual: %d", manager.config.MaxPodGracePeriodSeconds, observedGracePeriod)
|
|
}
|
|
// reset state
|
|
podKiller.pod = nil
|
|
podKiller.gracePeriodOverride = nil
|
|
|
|
// remove inode pressure
|
|
fakeClock.Step(20 * time.Minute)
|
|
summaryProvider.result = summaryStatsMaker("3Mi", "4Mi", podStats)
|
|
manager.synchronize(diskInfoProvider, activePodsFunc)
|
|
|
|
// we should not have disk pressure
|
|
if manager.IsUnderDiskPressure() {
|
|
t.Errorf("Manager should not report inode pressure")
|
|
}
|
|
|
|
// induce inode pressure!
|
|
fakeClock.Step(1 * time.Minute)
|
|
summaryProvider.result = summaryStatsMaker("0.5Mi", "4Mi", podStats)
|
|
manager.synchronize(diskInfoProvider, activePodsFunc)
|
|
|
|
// we should have disk pressure
|
|
if !manager.IsUnderDiskPressure() {
|
|
t.Errorf("Manager should report inode pressure")
|
|
}
|
|
|
|
// check the right pod was killed
|
|
if podKiller.pod != podToEvict {
|
|
t.Errorf("Manager chose to kill pod: %v, but should have chosen %v", podKiller.pod.Name, podToEvict.Name)
|
|
}
|
|
observedGracePeriod = *podKiller.gracePeriodOverride
|
|
if observedGracePeriod != int64(0) {
|
|
t.Errorf("Manager chose to kill pod with incorrect grace period. Expected: %d, actual: %d", 0, observedGracePeriod)
|
|
}
|
|
|
|
// try to admit our pod (should fail)
|
|
if result := manager.Admit(&lifecycle.PodAdmitAttributes{Pod: podToAdmit}); result.Admit {
|
|
t.Errorf("Admit pod: %v, expected: %v, actual: %v", podToAdmit, false, result.Admit)
|
|
}
|
|
|
|
// reduce inode pressure
|
|
fakeClock.Step(1 * time.Minute)
|
|
summaryProvider.result = summaryStatsMaker("3Mi", "4Mi", podStats)
|
|
podKiller.pod = nil // reset state
|
|
manager.synchronize(diskInfoProvider, activePodsFunc)
|
|
|
|
// we should have disk pressure (because transition period not yet met)
|
|
if !manager.IsUnderDiskPressure() {
|
|
t.Errorf("Manager should report inode pressure")
|
|
}
|
|
|
|
// no pod should have been killed
|
|
if podKiller.pod != nil {
|
|
t.Errorf("Manager chose to kill pod: %v when no pod should have been killed", podKiller.pod.Name)
|
|
}
|
|
|
|
// try to admit our pod (should fail)
|
|
if result := manager.Admit(&lifecycle.PodAdmitAttributes{Pod: podToAdmit}); result.Admit {
|
|
t.Errorf("Admit pod: %v, expected: %v, actual: %v", podToAdmit, false, result.Admit)
|
|
}
|
|
|
|
// move the clock past transition period to ensure that we stop reporting pressure
|
|
fakeClock.Step(5 * time.Minute)
|
|
summaryProvider.result = summaryStatsMaker("3Mi", "4Mi", podStats)
|
|
podKiller.pod = nil // reset state
|
|
manager.synchronize(diskInfoProvider, activePodsFunc)
|
|
|
|
// we should not have disk pressure (because transition period met)
|
|
if manager.IsUnderDiskPressure() {
|
|
t.Errorf("Manager should not report inode pressure")
|
|
}
|
|
|
|
// no pod should have been killed
|
|
if podKiller.pod != nil {
|
|
t.Errorf("Manager chose to kill pod: %v when no pod should have been killed", podKiller.pod.Name)
|
|
}
|
|
|
|
// try to admit our pod (should succeed)
|
|
if result := manager.Admit(&lifecycle.PodAdmitAttributes{Pod: podToAdmit}); !result.Admit {
|
|
t.Errorf("Admit pod: %v, expected: %v, actual: %v", podToAdmit, true, result.Admit)
|
|
}
|
|
}
|