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Merge pull request #42204 from dashpole/allocatable_eviction
Automatic merge from submit-queue Eviction Manager Enforces Allocatable Thresholds This PR modifies the eviction manager to enforce node allocatable thresholds for memory as described in kubernetes/community#348. This PR should be merged after #41234. cc @kubernetes/sig-node-pr-reviews @kubernetes/sig-node-feature-requests @vishh ** Why is this a bug/regression** Kubelet uses `oom_score_adj` to enforce QoS policies. But the `oom_score_adj` is based on overall memory requested, which means that a Burstable pod that requested a lot of memory can lead to OOM kills for Guaranteed pods, which violates QoS. Even worse, we have observed system daemons like kubelet or kube-proxy being killed by the OOM killer. Without this PR, v1.6 will have node stability issues and regressions in an existing GA feature `out of Resource` handling.
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commit
2d319bd406
@ -520,7 +520,7 @@ func run(s *options.KubeletServer, kubeDeps *kubelet.KubeletDeps) (err error) {
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var hardEvictionThresholds []evictionapi.Threshold
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// If the user requested to ignore eviction thresholds, then do not set valid values for hardEvictionThresholds here.
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if !s.ExperimentalNodeAllocatableIgnoreEvictionThreshold {
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hardEvictionThresholds, err = eviction.ParseThresholdConfig(s.EvictionHard, "", "", "")
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hardEvictionThresholds, err = eviction.ParseThresholdConfig([]string{}, s.EvictionHard, "", "", "")
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if err != nil {
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return err
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}
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@ -33,6 +33,7 @@ go_test(
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"//pkg/api:go_default_library",
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"//pkg/api/v1:go_default_library",
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"//pkg/kubelet/api/v1alpha1/stats:go_default_library",
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"//pkg/kubelet/cm:go_default_library",
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"//pkg/kubelet/eviction/api:go_default_library",
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"//pkg/kubelet/lifecycle:go_default_library",
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"//pkg/kubelet/types:go_default_library",
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@ -36,6 +36,8 @@ const (
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SignalImageFsAvailable Signal = "imagefs.available"
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// SignalImageFsInodesFree is amount of inodes available on filesystem that container runtime uses for storing images and container writeable layers.
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SignalImageFsInodesFree Signal = "imagefs.inodesFree"
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// SignalAllocatableMemoryAvailable is amount of memory available for pod allocation (i.e. allocatable - workingSet (of pods), in bytes.
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SignalAllocatableMemoryAvailable Signal = "allocatableMemory.available"
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)
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// ThresholdOperator is the operator used to express a Threshold.
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@ -134,9 +134,9 @@ func (m *managerImpl) Admit(attrs *lifecycle.PodAdmitAttributes) lifecycle.PodAd
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}
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// Start starts the control loop to observe and response to low compute resources.
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func (m *managerImpl) Start(diskInfoProvider DiskInfoProvider, podFunc ActivePodsFunc, monitoringInterval time.Duration) {
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func (m *managerImpl) Start(diskInfoProvider DiskInfoProvider, podFunc ActivePodsFunc, nodeProvider NodeProvider, monitoringInterval time.Duration) {
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// start the eviction manager monitoring
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go wait.Until(func() { m.synchronize(diskInfoProvider, podFunc) }, monitoringInterval, wait.NeverStop)
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go wait.Until(func() { m.synchronize(diskInfoProvider, podFunc, nodeProvider) }, monitoringInterval, wait.NeverStop)
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}
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// IsUnderMemoryPressure returns true if the node is under memory pressure.
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@ -187,7 +187,7 @@ func startMemoryThresholdNotifier(thresholds []evictionapi.Threshold, observatio
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}
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// synchronize is the main control loop that enforces eviction thresholds.
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func (m *managerImpl) synchronize(diskInfoProvider DiskInfoProvider, podFunc ActivePodsFunc) {
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func (m *managerImpl) synchronize(diskInfoProvider DiskInfoProvider, podFunc ActivePodsFunc, nodeProvider NodeProvider) {
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// if we have nothing to do, just return
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thresholds := m.config.Thresholds
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if len(thresholds) == 0 {
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@ -209,7 +209,7 @@ func (m *managerImpl) synchronize(diskInfoProvider DiskInfoProvider, podFunc Act
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}
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// make observations and get a function to derive pod usage stats relative to those observations.
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observations, statsFunc, err := makeSignalObservations(m.summaryProvider)
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observations, statsFunc, err := makeSignalObservations(m.summaryProvider, nodeProvider)
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if err != nil {
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glog.Errorf("eviction manager: unexpected err: %v", err)
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return
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@ -224,7 +224,7 @@ func (m *managerImpl) synchronize(diskInfoProvider DiskInfoProvider, podFunc Act
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err = startMemoryThresholdNotifier(m.config.Thresholds, observations, false, func(desc string) {
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glog.Infof("soft memory eviction threshold crossed at %s", desc)
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// TODO wait grace period for soft memory limit
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m.synchronize(diskInfoProvider, podFunc)
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m.synchronize(diskInfoProvider, podFunc, nodeProvider)
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})
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if err != nil {
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glog.Warningf("eviction manager: failed to create hard memory threshold notifier: %v", err)
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@ -232,7 +232,7 @@ func (m *managerImpl) synchronize(diskInfoProvider DiskInfoProvider, podFunc Act
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// start hard memory notification
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err = startMemoryThresholdNotifier(m.config.Thresholds, observations, true, func(desc string) {
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glog.Infof("hard memory eviction threshold crossed at %s", desc)
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m.synchronize(diskInfoProvider, podFunc)
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m.synchronize(diskInfoProvider, podFunc, nodeProvider)
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})
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if err != nil {
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glog.Warningf("eviction manager: failed to create soft memory threshold notifier: %v", err)
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@ -59,6 +59,24 @@ func (m *mockDiskInfoProvider) HasDedicatedImageFs() (bool, error) {
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return m.dedicatedImageFs, nil
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}
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func newMockNodeProvider(allocatableCapacity v1.ResourceList) *mockNodeProvider {
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return &mockNodeProvider{
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node: v1.Node{
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Status: v1.NodeStatus{
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Allocatable: allocatableCapacity,
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},
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},
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}
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}
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type mockNodeProvider struct {
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node v1.Node
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}
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func (m *mockNodeProvider) GetNode() (*v1.Node, error) {
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return &m.node, 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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@ -175,6 +193,7 @@ func TestMemoryPressure(t *testing.T) {
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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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nodeProvider := newMockNodeProvider(v1.ResourceList{v1.ResourceMemory: *quantityMustParse("2Gi")})
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imageGC := &mockImageGC{freed: int64(0), err: nil}
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nodeRef := &clientv1.ObjectReference{Kind: "Node", Name: "test", UID: types.UID("test"), Namespace: ""}
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@ -217,7 +236,7 @@ func TestMemoryPressure(t *testing.T) {
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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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manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
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// we should not have memory pressure
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if manager.IsUnderMemoryPressure() {
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@ -235,7 +254,7 @@ func TestMemoryPressure(t *testing.T) {
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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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manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
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// we should have memory pressure
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if !manager.IsUnderMemoryPressure() {
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@ -250,7 +269,7 @@ func TestMemoryPressure(t *testing.T) {
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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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manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
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// we should have memory pressure
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if !manager.IsUnderMemoryPressure() {
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@ -275,7 +294,7 @@ func TestMemoryPressure(t *testing.T) {
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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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manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
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// we should not have memory pressure
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if manager.IsUnderMemoryPressure() {
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@ -285,7 +304,7 @@ func TestMemoryPressure(t *testing.T) {
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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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manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
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// we should have memory pressure
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if !manager.IsUnderMemoryPressure() {
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@ -313,7 +332,7 @@ func TestMemoryPressure(t *testing.T) {
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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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manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
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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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@ -337,7 +356,7 @@ func TestMemoryPressure(t *testing.T) {
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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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manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
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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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@ -392,6 +411,7 @@ func TestDiskPressureNodeFs(t *testing.T) {
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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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nodeProvider := newMockNodeProvider(v1.ResourceList{v1.ResourceMemory: *quantityMustParse("2Gi")})
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imageGC := &mockImageGC{freed: int64(0), err: nil}
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nodeRef := &clientv1.ObjectReference{Kind: "Node", Name: "test", UID: types.UID("test"), Namespace: ""}
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@ -433,7 +453,7 @@ func TestDiskPressureNodeFs(t *testing.T) {
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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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manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
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// we should not have disk pressure
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if manager.IsUnderDiskPressure() {
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@ -448,7 +468,7 @@ func TestDiskPressureNodeFs(t *testing.T) {
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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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manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
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// we should have disk pressure
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if !manager.IsUnderDiskPressure() {
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@ -463,7 +483,7 @@ func TestDiskPressureNodeFs(t *testing.T) {
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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("1.5Gi", "200Gi", podStats)
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manager.synchronize(diskInfoProvider, activePodsFunc)
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manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
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// we should have disk pressure
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if !manager.IsUnderDiskPressure() {
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@ -488,7 +508,7 @@ func TestDiskPressureNodeFs(t *testing.T) {
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// remove disk pressure
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fakeClock.Step(20 * time.Minute)
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summaryProvider.result = summaryStatsMaker("16Gi", "200Gi", podStats)
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manager.synchronize(diskInfoProvider, activePodsFunc)
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manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
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// we should not have disk pressure
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if manager.IsUnderDiskPressure() {
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@ -498,7 +518,7 @@ func TestDiskPressureNodeFs(t *testing.T) {
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// induce disk pressure!
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fakeClock.Step(1 * time.Minute)
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summaryProvider.result = summaryStatsMaker("500Mi", "200Gi", podStats)
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manager.synchronize(diskInfoProvider, activePodsFunc)
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manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
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// we should have disk pressure
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if !manager.IsUnderDiskPressure() {
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@ -523,7 +543,7 @@ func TestDiskPressureNodeFs(t *testing.T) {
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fakeClock.Step(1 * time.Minute)
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summaryProvider.result = summaryStatsMaker("16Gi", "200Gi", podStats)
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podKiller.pod = nil // reset state
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manager.synchronize(diskInfoProvider, activePodsFunc)
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manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
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// we should have disk pressure (because transition period not yet met)
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if !manager.IsUnderDiskPressure() {
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@ -544,7 +564,7 @@ func TestDiskPressureNodeFs(t *testing.T) {
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fakeClock.Step(5 * time.Minute)
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summaryProvider.result = summaryStatsMaker("16Gi", "200Gi", podStats)
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podKiller.pod = nil // reset state
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manager.synchronize(diskInfoProvider, activePodsFunc)
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manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
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// we should not have disk pressure (because transition period met)
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if manager.IsUnderDiskPressure() {
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@ -589,6 +609,7 @@ func TestMinReclaim(t *testing.T) {
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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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nodeProvider := newMockNodeProvider(v1.ResourceList{v1.ResourceMemory: *quantityMustParse("2Gi")})
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imageGC := &mockImageGC{freed: int64(0), err: nil}
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nodeRef := &clientv1.ObjectReference{Kind: "Node", Name: "test", UID: types.UID("test"), Namespace: ""}
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@ -622,7 +643,7 @@ func TestMinReclaim(t *testing.T) {
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}
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// synchronize
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manager.synchronize(diskInfoProvider, activePodsFunc)
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manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
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// we should not have memory pressure
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if manager.IsUnderMemoryPressure() {
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@ -632,7 +653,7 @@ func TestMinReclaim(t *testing.T) {
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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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manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
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// we should have memory pressure
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if !manager.IsUnderMemoryPressure() {
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@ -652,7 +673,7 @@ func TestMinReclaim(t *testing.T) {
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fakeClock.Step(1 * time.Minute)
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summaryProvider.result = summaryStatsMaker("1.2Gi", podStats)
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podKiller.pod = nil // reset state
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manager.synchronize(diskInfoProvider, activePodsFunc)
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manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
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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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@ -672,7 +693,7 @@ func TestMinReclaim(t *testing.T) {
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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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manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
|
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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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@ -688,7 +709,7 @@ func TestMinReclaim(t *testing.T) {
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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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manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
|
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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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@ -727,6 +748,7 @@ func TestNodeReclaimFuncs(t *testing.T) {
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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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nodeProvider := newMockNodeProvider(v1.ResourceList{v1.ResourceMemory: *quantityMustParse("2Gi")})
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imageGcFree := resource.MustParse("700Mi")
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imageGC := &mockImageGC{freed: imageGcFree.Value(), err: nil}
|
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nodeRef := &clientv1.ObjectReference{Kind: "Node", Name: "test", UID: types.UID("test"), Namespace: ""}
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@ -761,7 +783,7 @@ func TestNodeReclaimFuncs(t *testing.T) {
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}
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// synchronize
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manager.synchronize(diskInfoProvider, activePodsFunc)
|
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manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
|
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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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@ -771,7 +793,7 @@ func TestNodeReclaimFuncs(t *testing.T) {
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// induce hard threshold
|
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fakeClock.Step(1 * time.Minute)
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summaryProvider.result = summaryStatsMaker(".9Gi", "200Gi", podStats)
|
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manager.synchronize(diskInfoProvider, activePodsFunc)
|
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manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
|
||||
|
||||
// we should have disk pressure
|
||||
if !manager.IsUnderDiskPressure() {
|
||||
@ -794,7 +816,7 @@ func TestNodeReclaimFuncs(t *testing.T) {
|
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// remove disk pressure
|
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fakeClock.Step(20 * time.Minute)
|
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summaryProvider.result = summaryStatsMaker("16Gi", "200Gi", podStats)
|
||||
manager.synchronize(diskInfoProvider, activePodsFunc)
|
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manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
|
||||
|
||||
// we should not have disk pressure
|
||||
if manager.IsUnderDiskPressure() {
|
||||
@ -804,7 +826,7 @@ func TestNodeReclaimFuncs(t *testing.T) {
|
||||
// induce disk pressure!
|
||||
fakeClock.Step(1 * time.Minute)
|
||||
summaryProvider.result = summaryStatsMaker("400Mi", "200Gi", podStats)
|
||||
manager.synchronize(diskInfoProvider, activePodsFunc)
|
||||
manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
|
||||
|
||||
// we should have disk pressure
|
||||
if !manager.IsUnderDiskPressure() {
|
||||
@ -830,7 +852,7 @@ func TestNodeReclaimFuncs(t *testing.T) {
|
||||
summaryProvider.result = summaryStatsMaker("16Gi", "200Gi", podStats)
|
||||
imageGC.invoked = false // reset state
|
||||
podKiller.pod = nil // reset state
|
||||
manager.synchronize(diskInfoProvider, activePodsFunc)
|
||||
manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
|
||||
|
||||
// we should have disk pressure (because transition period not yet met)
|
||||
if !manager.IsUnderDiskPressure() {
|
||||
@ -852,7 +874,7 @@ func TestNodeReclaimFuncs(t *testing.T) {
|
||||
summaryProvider.result = summaryStatsMaker("16Gi", "200Gi", podStats)
|
||||
imageGC.invoked = false // reset state
|
||||
podKiller.pod = nil // reset state
|
||||
manager.synchronize(diskInfoProvider, activePodsFunc)
|
||||
manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
|
||||
|
||||
// we should not have disk pressure (because transition period met)
|
||||
if manager.IsUnderDiskPressure() {
|
||||
@ -920,6 +942,7 @@ func TestInodePressureNodeFsInodes(t *testing.T) {
|
||||
fakeClock := clock.NewFakeClock(time.Now())
|
||||
podKiller := &mockPodKiller{}
|
||||
diskInfoProvider := &mockDiskInfoProvider{dedicatedImageFs: false}
|
||||
nodeProvider := newMockNodeProvider(v1.ResourceList{v1.ResourceMemory: *quantityMustParse("2Gi")})
|
||||
imageGC := &mockImageGC{freed: int64(0), err: nil}
|
||||
nodeRef := &clientv1.ObjectReference{Kind: "Node", Name: "test", UID: types.UID("test"), Namespace: ""}
|
||||
|
||||
@ -961,7 +984,7 @@ func TestInodePressureNodeFsInodes(t *testing.T) {
|
||||
podToAdmit, _ := podMaker("pod-to-admit", newResourceList("", ""), newResourceList("", ""), "0", "0", "0")
|
||||
|
||||
// synchronize
|
||||
manager.synchronize(diskInfoProvider, activePodsFunc)
|
||||
manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
|
||||
|
||||
// we should not have disk pressure
|
||||
if manager.IsUnderDiskPressure() {
|
||||
@ -976,7 +999,7 @@ func TestInodePressureNodeFsInodes(t *testing.T) {
|
||||
// induce soft threshold
|
||||
fakeClock.Step(1 * time.Minute)
|
||||
summaryProvider.result = summaryStatsMaker("1.5Mi", "4Mi", podStats)
|
||||
manager.synchronize(diskInfoProvider, activePodsFunc)
|
||||
manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
|
||||
|
||||
// we should have disk pressure
|
||||
if !manager.IsUnderDiskPressure() {
|
||||
@ -991,7 +1014,7 @@ func TestInodePressureNodeFsInodes(t *testing.T) {
|
||||
// step forward in time pass the grace period
|
||||
fakeClock.Step(3 * time.Minute)
|
||||
summaryProvider.result = summaryStatsMaker("1.5Mi", "4Mi", podStats)
|
||||
manager.synchronize(diskInfoProvider, activePodsFunc)
|
||||
manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
|
||||
|
||||
// we should have disk pressure
|
||||
if !manager.IsUnderDiskPressure() {
|
||||
@ -1016,7 +1039,7 @@ func TestInodePressureNodeFsInodes(t *testing.T) {
|
||||
// remove inode pressure
|
||||
fakeClock.Step(20 * time.Minute)
|
||||
summaryProvider.result = summaryStatsMaker("3Mi", "4Mi", podStats)
|
||||
manager.synchronize(diskInfoProvider, activePodsFunc)
|
||||
manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
|
||||
|
||||
// we should not have disk pressure
|
||||
if manager.IsUnderDiskPressure() {
|
||||
@ -1026,7 +1049,7 @@ func TestInodePressureNodeFsInodes(t *testing.T) {
|
||||
// induce inode pressure!
|
||||
fakeClock.Step(1 * time.Minute)
|
||||
summaryProvider.result = summaryStatsMaker("0.5Mi", "4Mi", podStats)
|
||||
manager.synchronize(diskInfoProvider, activePodsFunc)
|
||||
manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
|
||||
|
||||
// we should have disk pressure
|
||||
if !manager.IsUnderDiskPressure() {
|
||||
@ -1051,7 +1074,7 @@ func TestInodePressureNodeFsInodes(t *testing.T) {
|
||||
fakeClock.Step(1 * time.Minute)
|
||||
summaryProvider.result = summaryStatsMaker("3Mi", "4Mi", podStats)
|
||||
podKiller.pod = nil // reset state
|
||||
manager.synchronize(diskInfoProvider, activePodsFunc)
|
||||
manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
|
||||
|
||||
// we should have disk pressure (because transition period not yet met)
|
||||
if !manager.IsUnderDiskPressure() {
|
||||
@ -1072,7 +1095,7 @@ func TestInodePressureNodeFsInodes(t *testing.T) {
|
||||
fakeClock.Step(5 * time.Minute)
|
||||
summaryProvider.result = summaryStatsMaker("3Mi", "4Mi", podStats)
|
||||
podKiller.pod = nil // reset state
|
||||
manager.synchronize(diskInfoProvider, activePodsFunc)
|
||||
manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
|
||||
|
||||
// we should not have disk pressure (because transition period met)
|
||||
if manager.IsUnderDiskPressure() {
|
||||
@ -1120,6 +1143,7 @@ func TestCriticalPodsAreNotEvicted(t *testing.T) {
|
||||
fakeClock := clock.NewFakeClock(time.Now())
|
||||
podKiller := &mockPodKiller{}
|
||||
diskInfoProvider := &mockDiskInfoProvider{dedicatedImageFs: false}
|
||||
nodeProvider := newMockNodeProvider(v1.ResourceList{v1.ResourceMemory: *quantityMustParse("2Gi")})
|
||||
imageGC := &mockImageGC{freed: int64(0), err: nil}
|
||||
nodeRef := &clientv1.ObjectReference{
|
||||
Kind: "Node", Name: "test", UID: types.UID("test"), Namespace: "",
|
||||
@ -1164,7 +1188,7 @@ func TestCriticalPodsAreNotEvicted(t *testing.T) {
|
||||
// induce soft threshold
|
||||
fakeClock.Step(1 * time.Minute)
|
||||
summaryProvider.result = summaryStatsMaker("1500Mi", podStats)
|
||||
manager.synchronize(diskInfoProvider, activePodsFunc)
|
||||
manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
|
||||
|
||||
// we should have memory pressure
|
||||
if !manager.IsUnderMemoryPressure() {
|
||||
@ -1179,7 +1203,7 @@ func TestCriticalPodsAreNotEvicted(t *testing.T) {
|
||||
// step forward in time pass the grace period
|
||||
fakeClock.Step(3 * time.Minute)
|
||||
summaryProvider.result = summaryStatsMaker("1500Mi", podStats)
|
||||
manager.synchronize(diskInfoProvider, activePodsFunc)
|
||||
manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
|
||||
|
||||
// we should have memory pressure
|
||||
if !manager.IsUnderMemoryPressure() {
|
||||
@ -1197,7 +1221,7 @@ func TestCriticalPodsAreNotEvicted(t *testing.T) {
|
||||
// remove memory pressure
|
||||
fakeClock.Step(20 * time.Minute)
|
||||
summaryProvider.result = summaryStatsMaker("3Gi", podStats)
|
||||
manager.synchronize(diskInfoProvider, activePodsFunc)
|
||||
manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
|
||||
|
||||
// we should not have memory pressure
|
||||
if manager.IsUnderMemoryPressure() {
|
||||
@ -1210,7 +1234,7 @@ func TestCriticalPodsAreNotEvicted(t *testing.T) {
|
||||
// induce memory pressure!
|
||||
fakeClock.Step(1 * time.Minute)
|
||||
summaryProvider.result = summaryStatsMaker("500Mi", podStats)
|
||||
manager.synchronize(diskInfoProvider, activePodsFunc)
|
||||
manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
|
||||
|
||||
// we should have memory pressure
|
||||
if !manager.IsUnderMemoryPressure() {
|
||||
@ -1222,3 +1246,167 @@ func TestCriticalPodsAreNotEvicted(t *testing.T) {
|
||||
t.Errorf("Manager chose to kill pod: %v, but should have chosen %v", podKiller.pod.Name, podToEvict.Name)
|
||||
}
|
||||
}
|
||||
|
||||
// TestAllocatableMemoryPressure
|
||||
func TestAllocatableMemoryPressure(t *testing.T) {
|
||||
podMaker := makePodWithMemoryStats
|
||||
summaryStatsMaker := makeMemoryStats
|
||||
constantCapacity := "4Gi"
|
||||
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: "400Mi"},
|
||||
{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: "500Mi"},
|
||||
{name: "best-effort-low", requests: newResourceList("", ""), limits: newResourceList("", ""), memoryWorkingSet: "100Mi"},
|
||||
{name: "best-effort-high", requests: newResourceList("", ""), limits: newResourceList("", ""), memoryWorkingSet: "200Mi"},
|
||||
}
|
||||
pods := []*v1.Pod{}
|
||||
podStats := map[*v1.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() []*v1.Pod {
|
||||
return pods
|
||||
}
|
||||
|
||||
fakeClock := clock.NewFakeClock(time.Now())
|
||||
podKiller := &mockPodKiller{}
|
||||
diskInfoProvider := &mockDiskInfoProvider{dedicatedImageFs: false}
|
||||
nodeProvider := newMockNodeProvider(v1.ResourceList{v1.ResourceMemory: *quantityMustParse("2Gi")})
|
||||
imageGC := &mockImageGC{freed: int64(0), err: nil}
|
||||
nodeRef := &clientv1.ObjectReference{Kind: "Node", Name: "test", UID: types.UID("test"), Namespace: ""}
|
||||
|
||||
config := Config{
|
||||
MaxPodGracePeriodSeconds: 5,
|
||||
PressureTransitionPeriod: time.Minute * 5,
|
||||
Thresholds: []evictionapi.Threshold{
|
||||
{
|
||||
Signal: evictionapi.SignalAllocatableMemoryAvailable,
|
||||
Operator: evictionapi.OpLessThan,
|
||||
Value: evictionapi.ThresholdValue{
|
||||
Quantity: quantityMustParse("1Ki"),
|
||||
},
|
||||
},
|
||||
},
|
||||
}
|
||||
summaryProvider := &fakeSummaryProvider{result: summaryStatsMaker(constantCapacity, 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
|
||||
bestEffortPodToAdmit, _ := podMaker("best-admit", newResourceList("", ""), newResourceList("", ""), "0Gi")
|
||||
burstablePodToAdmit, _ := podMaker("burst-admit", newResourceList("100m", "100Mi"), newResourceList("200m", "200Mi"), "0Gi")
|
||||
|
||||
// synchronize
|
||||
manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
|
||||
|
||||
// we should not have memory pressure
|
||||
if manager.IsUnderMemoryPressure() {
|
||||
t.Errorf("Manager should not report memory pressure")
|
||||
}
|
||||
|
||||
// try to admit our pods (they should succeed)
|
||||
expected := []bool{true, true}
|
||||
for i, pod := range []*v1.Pod{bestEffortPodToAdmit, burstablePodToAdmit} {
|
||||
if result := manager.Admit(&lifecycle.PodAdmitAttributes{Pod: pod}); expected[i] != result.Admit {
|
||||
t.Errorf("Admit pod: %v, expected: %v, actual: %v", pod, expected[i], result.Admit)
|
||||
}
|
||||
}
|
||||
|
||||
// induce memory pressure!
|
||||
fakeClock.Step(1 * time.Minute)
|
||||
pod, podStat := podMaker("guaranteed-high-2", newResourceList("100m", "1Gi"), newResourceList("100m", "1Gi"), "1Gi")
|
||||
podStats[pod] = podStat
|
||||
summaryProvider.result = summaryStatsMaker(constantCapacity, podStats)
|
||||
manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
|
||||
|
||||
// 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)
|
||||
}
|
||||
// reset state
|
||||
podKiller.pod = nil
|
||||
podKiller.gracePeriodOverride = nil
|
||||
|
||||
// the best-effort pod should not admit, burstable should
|
||||
expected = []bool{false, true}
|
||||
for i, pod := range []*v1.Pod{bestEffortPodToAdmit, burstablePodToAdmit} {
|
||||
if result := manager.Admit(&lifecycle.PodAdmitAttributes{Pod: pod}); expected[i] != result.Admit {
|
||||
t.Errorf("Admit pod: %v, expected: %v, actual: %v", pod, expected[i], result.Admit)
|
||||
}
|
||||
}
|
||||
|
||||
// reduce memory pressure
|
||||
fakeClock.Step(1 * time.Minute)
|
||||
for pod := range podStats {
|
||||
if pod.Name == "guaranteed-high-2" {
|
||||
delete(podStats, pod)
|
||||
}
|
||||
}
|
||||
summaryProvider.result = summaryStatsMaker(constantCapacity, podStats)
|
||||
podKiller.pod = nil // reset state
|
||||
manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
|
||||
|
||||
// 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)
|
||||
}
|
||||
|
||||
// the best-effort pod should not admit, burstable should
|
||||
expected = []bool{false, true}
|
||||
for i, pod := range []*v1.Pod{bestEffortPodToAdmit, burstablePodToAdmit} {
|
||||
if result := manager.Admit(&lifecycle.PodAdmitAttributes{Pod: pod}); expected[i] != result.Admit {
|
||||
t.Errorf("Admit pod: %v, expected: %v, actual: %v", pod, expected[i], result.Admit)
|
||||
}
|
||||
}
|
||||
|
||||
// move the clock past transition period to ensure that we stop reporting pressure
|
||||
fakeClock.Step(5 * time.Minute)
|
||||
summaryProvider.result = summaryStatsMaker(constantCapacity, podStats)
|
||||
podKiller.pod = nil // reset state
|
||||
manager.synchronize(diskInfoProvider, activePodsFunc, nodeProvider)
|
||||
|
||||
// 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)
|
||||
}
|
||||
|
||||
// all pods should admit now
|
||||
expected = []bool{true, true}
|
||||
for i, pod := range []*v1.Pod{bestEffortPodToAdmit, burstablePodToAdmit} {
|
||||
if result := manager.Admit(&lifecycle.PodAdmitAttributes{Pod: pod}); expected[i] != result.Admit {
|
||||
t.Errorf("Admit pod: %v, expected: %v, actual: %v", pod, expected[i], result.Admit)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
@ -29,6 +29,7 @@ import (
|
||||
"k8s.io/kubernetes/pkg/api"
|
||||
"k8s.io/kubernetes/pkg/api/v1"
|
||||
statsapi "k8s.io/kubernetes/pkg/kubelet/api/v1alpha1/stats"
|
||||
"k8s.io/kubernetes/pkg/kubelet/cm"
|
||||
evictionapi "k8s.io/kubernetes/pkg/kubelet/eviction/api"
|
||||
"k8s.io/kubernetes/pkg/kubelet/qos"
|
||||
"k8s.io/kubernetes/pkg/kubelet/server/stats"
|
||||
@ -68,6 +69,7 @@ func init() {
|
||||
// map eviction signals to node conditions
|
||||
signalToNodeCondition = map[evictionapi.Signal]v1.NodeConditionType{}
|
||||
signalToNodeCondition[evictionapi.SignalMemoryAvailable] = v1.NodeMemoryPressure
|
||||
signalToNodeCondition[evictionapi.SignalAllocatableMemoryAvailable] = v1.NodeMemoryPressure
|
||||
signalToNodeCondition[evictionapi.SignalImageFsAvailable] = v1.NodeDiskPressure
|
||||
signalToNodeCondition[evictionapi.SignalNodeFsAvailable] = v1.NodeDiskPressure
|
||||
signalToNodeCondition[evictionapi.SignalImageFsInodesFree] = v1.NodeDiskPressure
|
||||
@ -76,6 +78,7 @@ func init() {
|
||||
// map signals to resources (and vice-versa)
|
||||
signalToResource = map[evictionapi.Signal]v1.ResourceName{}
|
||||
signalToResource[evictionapi.SignalMemoryAvailable] = v1.ResourceMemory
|
||||
signalToResource[evictionapi.SignalAllocatableMemoryAvailable] = v1.ResourceMemory
|
||||
signalToResource[evictionapi.SignalImageFsAvailable] = resourceImageFs
|
||||
signalToResource[evictionapi.SignalImageFsInodesFree] = resourceImageFsInodes
|
||||
signalToResource[evictionapi.SignalNodeFsAvailable] = resourceNodeFs
|
||||
@ -93,8 +96,10 @@ func validSignal(signal evictionapi.Signal) bool {
|
||||
}
|
||||
|
||||
// ParseThresholdConfig parses the flags for thresholds.
|
||||
func ParseThresholdConfig(evictionHard, evictionSoft, evictionSoftGracePeriod, evictionMinimumReclaim string) ([]evictionapi.Threshold, error) {
|
||||
func ParseThresholdConfig(allocatableConfig []string, evictionHard, evictionSoft, evictionSoftGracePeriod, evictionMinimumReclaim string) ([]evictionapi.Threshold, error) {
|
||||
results := []evictionapi.Threshold{}
|
||||
allocatableThresholds := getAllocatableThreshold(allocatableConfig)
|
||||
results = append(results, allocatableThresholds...)
|
||||
|
||||
hardThresholds, err := parseThresholdStatements(evictionHard)
|
||||
if err != nil {
|
||||
@ -214,6 +219,27 @@ func parseThresholdStatement(statement string) (evictionapi.Threshold, error) {
|
||||
}, nil
|
||||
}
|
||||
|
||||
// getAllocatableThreshold returns the thresholds applicable for the allocatable configuration
|
||||
func getAllocatableThreshold(allocatableConfig []string) []evictionapi.Threshold {
|
||||
for _, key := range allocatableConfig {
|
||||
if key == cm.NodeAllocatableEnforcementKey {
|
||||
return []evictionapi.Threshold{
|
||||
{
|
||||
Signal: evictionapi.SignalAllocatableMemoryAvailable,
|
||||
Operator: evictionapi.OpLessThan,
|
||||
Value: evictionapi.ThresholdValue{
|
||||
Quantity: resource.NewQuantity(int64(0), resource.BinarySI),
|
||||
},
|
||||
MinReclaim: &evictionapi.ThresholdValue{
|
||||
Quantity: resource.NewQuantity(int64(0), resource.BinarySI),
|
||||
},
|
||||
},
|
||||
}
|
||||
}
|
||||
}
|
||||
return []evictionapi.Threshold{}
|
||||
}
|
||||
|
||||
// parsePercentage parses a string representing a percentage value
|
||||
func parsePercentage(input string) (float32, error) {
|
||||
value, err := strconv.ParseFloat(strings.TrimRight(input, "%"), 32)
|
||||
@ -611,11 +637,15 @@ func (a byEvictionPriority) Less(i, j int) bool {
|
||||
}
|
||||
|
||||
// makeSignalObservations derives observations using the specified summary provider.
|
||||
func makeSignalObservations(summaryProvider stats.SummaryProvider) (signalObservations, statsFunc, error) {
|
||||
func makeSignalObservations(summaryProvider stats.SummaryProvider, nodeProvider NodeProvider) (signalObservations, statsFunc, error) {
|
||||
summary, err := summaryProvider.Get()
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
node, err := nodeProvider.GetNode()
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
// build the function to work against for pod stats
|
||||
statsFunc := cachedStatsFunc(summary.Pods)
|
||||
@ -663,6 +693,19 @@ func makeSignalObservations(summaryProvider stats.SummaryProvider) (signalObserv
|
||||
}
|
||||
}
|
||||
}
|
||||
if memoryAllocatableCapacity, ok := node.Status.Allocatable[v1.ResourceMemory]; ok {
|
||||
memoryAllocatableAvailable := memoryAllocatableCapacity.Copy()
|
||||
for _, pod := range summary.Pods {
|
||||
mu, err := podMemoryUsage(pod)
|
||||
if err == nil {
|
||||
memoryAllocatableAvailable.Sub(mu[v1.ResourceMemory])
|
||||
}
|
||||
}
|
||||
result[evictionapi.SignalAllocatableMemoryAvailable] = signalObservation{
|
||||
available: memoryAllocatableAvailable,
|
||||
capacity: memoryAllocatableCapacity.Copy(),
|
||||
}
|
||||
}
|
||||
return result, statsFunc, nil
|
||||
}
|
||||
|
||||
|
||||
@ -28,6 +28,7 @@ import (
|
||||
"k8s.io/kubernetes/pkg/api"
|
||||
"k8s.io/kubernetes/pkg/api/v1"
|
||||
statsapi "k8s.io/kubernetes/pkg/kubelet/api/v1alpha1/stats"
|
||||
"k8s.io/kubernetes/pkg/kubelet/cm"
|
||||
evictionapi "k8s.io/kubernetes/pkg/kubelet/eviction/api"
|
||||
"k8s.io/kubernetes/pkg/quota"
|
||||
)
|
||||
@ -40,6 +41,7 @@ func quantityMustParse(value string) *resource.Quantity {
|
||||
func TestParseThresholdConfig(t *testing.T) {
|
||||
gracePeriod, _ := time.ParseDuration("30s")
|
||||
testCases := map[string]struct {
|
||||
allocatableConfig []string
|
||||
evictionHard string
|
||||
evictionSoft string
|
||||
evictionSoftGracePeriod string
|
||||
@ -48,6 +50,7 @@ func TestParseThresholdConfig(t *testing.T) {
|
||||
expectThresholds []evictionapi.Threshold
|
||||
}{
|
||||
"no values": {
|
||||
allocatableConfig: []string{},
|
||||
evictionHard: "",
|
||||
evictionSoft: "",
|
||||
evictionSoftGracePeriod: "",
|
||||
@ -56,12 +59,23 @@ func TestParseThresholdConfig(t *testing.T) {
|
||||
expectThresholds: []evictionapi.Threshold{},
|
||||
},
|
||||
"all flag values": {
|
||||
allocatableConfig: []string{cm.NodeAllocatableEnforcementKey},
|
||||
evictionHard: "memory.available<150Mi",
|
||||
evictionSoft: "memory.available<300Mi",
|
||||
evictionSoftGracePeriod: "memory.available=30s",
|
||||
evictionMinReclaim: "memory.available=0",
|
||||
expectErr: false,
|
||||
expectThresholds: []evictionapi.Threshold{
|
||||
{
|
||||
Signal: evictionapi.SignalAllocatableMemoryAvailable,
|
||||
Operator: evictionapi.OpLessThan,
|
||||
Value: evictionapi.ThresholdValue{
|
||||
Quantity: quantityMustParse("0"),
|
||||
},
|
||||
MinReclaim: &evictionapi.ThresholdValue{
|
||||
Quantity: quantityMustParse("0"),
|
||||
},
|
||||
},
|
||||
{
|
||||
Signal: evictionapi.SignalMemoryAvailable,
|
||||
Operator: evictionapi.OpLessThan,
|
||||
@ -86,6 +100,7 @@ func TestParseThresholdConfig(t *testing.T) {
|
||||
},
|
||||
},
|
||||
"all flag values in percentages": {
|
||||
allocatableConfig: []string{},
|
||||
evictionHard: "memory.available<10%",
|
||||
evictionSoft: "memory.available<30%",
|
||||
evictionSoftGracePeriod: "memory.available=30s",
|
||||
@ -116,6 +131,7 @@ func TestParseThresholdConfig(t *testing.T) {
|
||||
},
|
||||
},
|
||||
"disk flag values": {
|
||||
allocatableConfig: []string{},
|
||||
evictionHard: "imagefs.available<150Mi,nodefs.available<100Mi",
|
||||
evictionSoft: "imagefs.available<300Mi,nodefs.available<200Mi",
|
||||
evictionSoftGracePeriod: "imagefs.available=30s,nodefs.available=30s",
|
||||
@ -167,6 +183,7 @@ func TestParseThresholdConfig(t *testing.T) {
|
||||
},
|
||||
},
|
||||
"disk flag values in percentages": {
|
||||
allocatableConfig: []string{},
|
||||
evictionHard: "imagefs.available<15%,nodefs.available<10.5%",
|
||||
evictionSoft: "imagefs.available<30%,nodefs.available<20.5%",
|
||||
evictionSoftGracePeriod: "imagefs.available=30s,nodefs.available=30s",
|
||||
@ -218,6 +235,7 @@ func TestParseThresholdConfig(t *testing.T) {
|
||||
},
|
||||
},
|
||||
"inode flag values": {
|
||||
allocatableConfig: []string{},
|
||||
evictionHard: "imagefs.inodesFree<150Mi,nodefs.inodesFree<100Mi",
|
||||
evictionSoft: "imagefs.inodesFree<300Mi,nodefs.inodesFree<200Mi",
|
||||
evictionSoftGracePeriod: "imagefs.inodesFree=30s,nodefs.inodesFree=30s",
|
||||
@ -269,6 +287,7 @@ func TestParseThresholdConfig(t *testing.T) {
|
||||
},
|
||||
},
|
||||
"invalid-signal": {
|
||||
allocatableConfig: []string{},
|
||||
evictionHard: "mem.available<150Mi",
|
||||
evictionSoft: "",
|
||||
evictionSoftGracePeriod: "",
|
||||
@ -277,6 +296,7 @@ func TestParseThresholdConfig(t *testing.T) {
|
||||
expectThresholds: []evictionapi.Threshold{},
|
||||
},
|
||||
"hard-signal-negative": {
|
||||
allocatableConfig: []string{},
|
||||
evictionHard: "memory.available<-150Mi",
|
||||
evictionSoft: "",
|
||||
evictionSoftGracePeriod: "",
|
||||
@ -285,6 +305,7 @@ func TestParseThresholdConfig(t *testing.T) {
|
||||
expectThresholds: []evictionapi.Threshold{},
|
||||
},
|
||||
"hard-signal-negative-percentage": {
|
||||
allocatableConfig: []string{},
|
||||
evictionHard: "memory.available<-15%",
|
||||
evictionSoft: "",
|
||||
evictionSoftGracePeriod: "",
|
||||
@ -293,6 +314,7 @@ func TestParseThresholdConfig(t *testing.T) {
|
||||
expectThresholds: []evictionapi.Threshold{},
|
||||
},
|
||||
"soft-signal-negative": {
|
||||
allocatableConfig: []string{},
|
||||
evictionHard: "",
|
||||
evictionSoft: "memory.available<-150Mi",
|
||||
evictionSoftGracePeriod: "",
|
||||
@ -301,6 +323,7 @@ func TestParseThresholdConfig(t *testing.T) {
|
||||
expectThresholds: []evictionapi.Threshold{},
|
||||
},
|
||||
"duplicate-signal": {
|
||||
allocatableConfig: []string{},
|
||||
evictionHard: "memory.available<150Mi,memory.available<100Mi",
|
||||
evictionSoft: "",
|
||||
evictionSoftGracePeriod: "",
|
||||
@ -309,6 +332,7 @@ func TestParseThresholdConfig(t *testing.T) {
|
||||
expectThresholds: []evictionapi.Threshold{},
|
||||
},
|
||||
"valid-and-invalid-signal": {
|
||||
allocatableConfig: []string{},
|
||||
evictionHard: "memory.available<150Mi,invalid.foo<150Mi",
|
||||
evictionSoft: "",
|
||||
evictionSoftGracePeriod: "",
|
||||
@ -317,6 +341,7 @@ func TestParseThresholdConfig(t *testing.T) {
|
||||
expectThresholds: []evictionapi.Threshold{},
|
||||
},
|
||||
"soft-no-grace-period": {
|
||||
allocatableConfig: []string{},
|
||||
evictionHard: "",
|
||||
evictionSoft: "memory.available<150Mi",
|
||||
evictionSoftGracePeriod: "",
|
||||
@ -325,6 +350,7 @@ func TestParseThresholdConfig(t *testing.T) {
|
||||
expectThresholds: []evictionapi.Threshold{},
|
||||
},
|
||||
"soft-neg-grace-period": {
|
||||
allocatableConfig: []string{},
|
||||
evictionHard: "",
|
||||
evictionSoft: "memory.available<150Mi",
|
||||
evictionSoftGracePeriod: "memory.available=-30s",
|
||||
@ -333,6 +359,7 @@ func TestParseThresholdConfig(t *testing.T) {
|
||||
expectThresholds: []evictionapi.Threshold{},
|
||||
},
|
||||
"neg-reclaim": {
|
||||
allocatableConfig: []string{},
|
||||
evictionHard: "",
|
||||
evictionSoft: "",
|
||||
evictionSoftGracePeriod: "",
|
||||
@ -341,6 +368,7 @@ func TestParseThresholdConfig(t *testing.T) {
|
||||
expectThresholds: []evictionapi.Threshold{},
|
||||
},
|
||||
"duplicate-reclaim": {
|
||||
allocatableConfig: []string{},
|
||||
evictionHard: "",
|
||||
evictionSoft: "",
|
||||
evictionSoftGracePeriod: "",
|
||||
@ -350,7 +378,7 @@ func TestParseThresholdConfig(t *testing.T) {
|
||||
},
|
||||
}
|
||||
for testName, testCase := range testCases {
|
||||
thresholds, err := ParseThresholdConfig(testCase.evictionHard, testCase.evictionSoft, testCase.evictionSoftGracePeriod, testCase.evictionMinReclaim)
|
||||
thresholds, err := ParseThresholdConfig(testCase.allocatableConfig, testCase.evictionHard, testCase.evictionSoft, testCase.evictionSoftGracePeriod, testCase.evictionMinReclaim)
|
||||
if testCase.expectErr != (err != nil) {
|
||||
t.Errorf("Err not as expected, test: %v, error expected: %v, actual: %v", testName, testCase.expectErr, err)
|
||||
}
|
||||
@ -699,6 +727,7 @@ func TestMakeSignalObservations(t *testing.T) {
|
||||
}
|
||||
nodeAvailableBytes := uint64(1024 * 1024 * 1024)
|
||||
nodeWorkingSetBytes := uint64(1024 * 1024 * 1024)
|
||||
allocatableMemoryCapacity := uint64(5 * 1024 * 1024 * 1024)
|
||||
imageFsAvailableBytes := uint64(1024 * 1024)
|
||||
imageFsCapacityBytes := uint64(1024 * 1024 * 2)
|
||||
nodeFsAvailableBytes := uint64(1024)
|
||||
@ -738,15 +767,31 @@ func TestMakeSignalObservations(t *testing.T) {
|
||||
podMaker("pod1", "ns2", "uuid2", 1),
|
||||
podMaker("pod3", "ns3", "uuid3", 1),
|
||||
}
|
||||
containerWorkingSetBytes := int64(1024 * 1024)
|
||||
containerWorkingSetBytes := int64(1024 * 1024 * 1024)
|
||||
for _, pod := range pods {
|
||||
fakeStats.Pods = append(fakeStats.Pods, newPodStats(pod, containerWorkingSetBytes))
|
||||
}
|
||||
actualObservations, statsFunc, err := makeSignalObservations(provider)
|
||||
res := quantityMustParse("5Gi")
|
||||
nodeProvider := newMockNodeProvider(v1.ResourceList{v1.ResourceMemory: *res})
|
||||
// Allocatable thresholds are always 100%. Verify that Threshold == Capacity.
|
||||
if res.CmpInt64(int64(allocatableMemoryCapacity)) != 0 {
|
||||
t.Errorf("Expected Threshold %v to be equal to value %v", res.Value(), allocatableMemoryCapacity)
|
||||
}
|
||||
actualObservations, statsFunc, err := makeSignalObservations(provider, nodeProvider)
|
||||
|
||||
if err != nil {
|
||||
t.Errorf("Unexpected err: %v", err)
|
||||
}
|
||||
allocatableMemQuantity, found := actualObservations[evictionapi.SignalAllocatableMemoryAvailable]
|
||||
if !found {
|
||||
t.Errorf("Expected allocatable memory observation, but didnt find one")
|
||||
}
|
||||
if allocatableMemQuantity.available.Value() != 2*containerWorkingSetBytes {
|
||||
t.Errorf("Expected %v, actual: %v", containerWorkingSetBytes, allocatableMemQuantity.available.Value())
|
||||
}
|
||||
if expectedBytes := int64(allocatableMemoryCapacity); allocatableMemQuantity.capacity.Value() != expectedBytes {
|
||||
t.Errorf("Expected %v, actual: %v", expectedBytes, allocatableMemQuantity.capacity.Value())
|
||||
}
|
||||
memQuantity, found := actualObservations[evictionapi.SignalMemoryAvailable]
|
||||
if !found {
|
||||
t.Errorf("Expected available memory observation: %v", err)
|
||||
|
||||
@ -53,7 +53,7 @@ type Config struct {
|
||||
// Manager evaluates when an eviction threshold for node stability has been met on the node.
|
||||
type Manager interface {
|
||||
// Start starts the control loop to monitor eviction thresholds at specified interval.
|
||||
Start(diskInfoProvider DiskInfoProvider, podFunc ActivePodsFunc, monitoringInterval time.Duration)
|
||||
Start(diskInfoProvider DiskInfoProvider, podFunc ActivePodsFunc, nodeProvider NodeProvider, monitoringInterval time.Duration)
|
||||
|
||||
// IsUnderMemoryPressure returns true if the node is under memory pressure.
|
||||
IsUnderMemoryPressure() bool
|
||||
@ -68,6 +68,12 @@ type DiskInfoProvider interface {
|
||||
HasDedicatedImageFs() (bool, error)
|
||||
}
|
||||
|
||||
// NodeProvider is responsible for providing the node api object describing this node
|
||||
type NodeProvider interface {
|
||||
// GetNode returns the node info for this node
|
||||
GetNode() (*v1.Node, error)
|
||||
}
|
||||
|
||||
// ImageGC is responsible for performing garbage collection of unused images.
|
||||
type ImageGC interface {
|
||||
// DeleteUnusedImages deletes unused images and returns the number of bytes freed, or an error.
|
||||
|
||||
@ -349,7 +349,12 @@ func NewMainKubelet(kubeCfg *componentconfig.KubeletConfiguration, kubeDeps *Kub
|
||||
RootFreeDiskMB: int(kubeCfg.LowDiskSpaceThresholdMB),
|
||||
}
|
||||
|
||||
thresholds, err := eviction.ParseThresholdConfig(kubeCfg.EvictionHard, kubeCfg.EvictionSoft, kubeCfg.EvictionSoftGracePeriod, kubeCfg.EvictionMinimumReclaim)
|
||||
enforceNodeAllocatable := kubeCfg.EnforceNodeAllocatable
|
||||
if kubeCfg.ExperimentalNodeAllocatableIgnoreEvictionThreshold {
|
||||
// Do not provide kubeCfg.EnforceNodeAllocatable to eviction threshold parsing if we are not enforcing Evictions
|
||||
enforceNodeAllocatable = []string{}
|
||||
}
|
||||
thresholds, err := eviction.ParseThresholdConfig(enforceNodeAllocatable, kubeCfg.EvictionHard, kubeCfg.EvictionSoft, kubeCfg.EvictionSoftGracePeriod, kubeCfg.EvictionMinimumReclaim)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
@ -1222,7 +1227,7 @@ func (kl *Kubelet) initializeRuntimeDependentModules() {
|
||||
glog.Fatalf("Failed to start cAdvisor %v", err)
|
||||
}
|
||||
// eviction manager must start after cadvisor because it needs to know if the container runtime has a dedicated imagefs
|
||||
kl.evictionManager.Start(kl, kl.getActivePods, evictionMonitoringPeriod)
|
||||
kl.evictionManager.Start(kl, kl.getActivePods, kl, evictionMonitoringPeriod)
|
||||
}
|
||||
|
||||
// Run starts the kubelet reacting to config updates
|
||||
|
||||
@ -57,6 +57,7 @@ go_library(
|
||||
go_test(
|
||||
name = "go_default_test",
|
||||
srcs = [
|
||||
"allocatable_eviction_test.go",
|
||||
"apparmor_test.go",
|
||||
"container_manager_test.go",
|
||||
"critical_pod_test.go",
|
||||
|
||||
104
test/e2e_node/allocatable_eviction_test.go
Normal file
104
test/e2e_node/allocatable_eviction_test.go
Normal file
@ -0,0 +1,104 @@
|
||||
/*
|
||||
Copyright 2017 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 e2e_node
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"time"
|
||||
|
||||
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
||||
"k8s.io/kubernetes/pkg/api/v1"
|
||||
"k8s.io/kubernetes/pkg/apis/componentconfig"
|
||||
"k8s.io/kubernetes/pkg/kubelet/cm"
|
||||
"k8s.io/kubernetes/test/e2e/framework"
|
||||
|
||||
. "github.com/onsi/ginkgo"
|
||||
. "github.com/onsi/gomega"
|
||||
)
|
||||
|
||||
// Eviction Policy is described here:
|
||||
// https://github.com/kubernetes/kubernetes/blob/master/docs/proposals/kubelet-eviction.md
|
||||
|
||||
var _ = framework.KubeDescribe("AllocatableEviction [Slow] [Serial] [Disruptive] [Flaky]", func() {
|
||||
f := framework.NewDefaultFramework("allocatable-eviction-test")
|
||||
|
||||
podTestSpecs := []podTestSpec{
|
||||
{
|
||||
evictionPriority: 1, // This pod should be evicted before the innocent pod
|
||||
pod: *getMemhogPod("memory-hog-pod", "memory-hog", v1.ResourceRequirements{}),
|
||||
},
|
||||
{
|
||||
evictionPriority: 0, // This pod should never be evicted
|
||||
pod: v1.Pod{
|
||||
ObjectMeta: metav1.ObjectMeta{Name: "innocent-pod"},
|
||||
Spec: v1.PodSpec{
|
||||
RestartPolicy: v1.RestartPolicyNever,
|
||||
Containers: []v1.Container{
|
||||
{
|
||||
Image: "gcr.io/google_containers/busybox:1.24",
|
||||
Name: "normal-memory-usage-container",
|
||||
Command: []string{
|
||||
"sh",
|
||||
"-c", //make one big (5 Gb) file
|
||||
"dd if=/dev/urandom of=largefile bs=5000000000 count=1; while true; do sleep 5; done",
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
}
|
||||
evictionTestTimeout := 40 * time.Minute
|
||||
testCondition := "Memory Pressure"
|
||||
kubeletConfigUpdate := func(initialConfig *componentconfig.KubeletConfiguration) {
|
||||
initialConfig.EvictionHard = "memory.available<10%"
|
||||
// Set large system and kube reserved values to trigger allocatable thresholds far before hard eviction thresholds.
|
||||
initialConfig.SystemReserved = componentconfig.ConfigurationMap(map[string]string{"memory": "1Gi"})
|
||||
initialConfig.KubeReserved = componentconfig.ConfigurationMap(map[string]string{"memory": "1Gi"})
|
||||
initialConfig.EnforceNodeAllocatable = []string{cm.NodeAllocatableEnforcementKey}
|
||||
initialConfig.ExperimentalNodeAllocatableIgnoreEvictionThreshold = false
|
||||
initialConfig.CgroupsPerQOS = true
|
||||
}
|
||||
runEvictionTest(f, testCondition, podTestSpecs, evictionTestTimeout, hasMemoryPressure, kubeletConfigUpdate)
|
||||
})
|
||||
|
||||
// Returns TRUE if the node has Memory Pressure, FALSE otherwise
|
||||
func hasMemoryPressure(f *framework.Framework, testCondition string) (bool, error) {
|
||||
localNodeStatus := getLocalNode(f).Status
|
||||
_, pressure := v1.GetNodeCondition(&localNodeStatus, v1.NodeMemoryPressure)
|
||||
Expect(pressure).NotTo(BeNil())
|
||||
hasPressure := pressure.Status == v1.ConditionTrue
|
||||
By(fmt.Sprintf("checking if pod has %s: %v", testCondition, hasPressure))
|
||||
|
||||
// Additional Logging relating to Memory
|
||||
summary, err := getNodeSummary()
|
||||
if err != nil {
|
||||
return false, err
|
||||
}
|
||||
if summary.Node.Memory != nil && summary.Node.Memory.WorkingSetBytes != nil && summary.Node.Memory.AvailableBytes != nil {
|
||||
framework.Logf("Node.Memory.WorkingSetBytes: %d, summary.Node.Memory.AvailableBytes: %d", *summary.Node.Memory.WorkingSetBytes, *summary.Node.Memory.AvailableBytes)
|
||||
}
|
||||
for _, pod := range summary.Pods {
|
||||
framework.Logf("Pod: %s", pod.PodRef.Name)
|
||||
for _, container := range pod.Containers {
|
||||
if container.Memory != nil && container.Memory.WorkingSetBytes != nil {
|
||||
framework.Logf("--- summary Container: %s WorkingSetBytes: %d", container.Name, *container.Memory.WorkingSetBytes)
|
||||
}
|
||||
}
|
||||
}
|
||||
return hasPressure, nil
|
||||
}
|
||||
@ -22,6 +22,7 @@ import (
|
||||
|
||||
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
||||
"k8s.io/kubernetes/pkg/api/v1"
|
||||
"k8s.io/kubernetes/pkg/apis/componentconfig"
|
||||
"k8s.io/kubernetes/test/e2e/framework"
|
||||
|
||||
. "github.com/onsi/ginkgo"
|
||||
@ -112,10 +113,11 @@ var _ = framework.KubeDescribe("InodeEviction [Slow] [Serial] [Disruptive] [Flak
|
||||
}
|
||||
evictionTestTimeout := 30 * time.Minute
|
||||
testCondition := "Disk Pressure due to Inodes"
|
||||
// Set the EvictionHard threshold lower to decrease test time
|
||||
evictionHardLimit := "nodefs.inodesFree<50%"
|
||||
kubeletConfigUpdate := func(initialConfig *componentconfig.KubeletConfiguration) {
|
||||
initialConfig.EvictionHard = "nodefs.inodesFree<50%"
|
||||
}
|
||||
|
||||
runEvictionTest(f, testCondition, podTestSpecs, evictionHardLimit, evictionTestTimeout, hasInodePressure)
|
||||
runEvictionTest(f, testCondition, podTestSpecs, evictionTestTimeout, hasInodePressure, kubeletConfigUpdate)
|
||||
})
|
||||
|
||||
// Struct used by runEvictionTest that specifies the pod, and when that pod should be evicted, relative to other pods
|
||||
@ -133,12 +135,12 @@ type podTestSpec struct {
|
||||
// It ensures that lower evictionPriority pods are always evicted before higher evictionPriority pods (2 evicted before 1, etc.)
|
||||
// It ensures that all lower evictionPriority pods are eventually evicted.
|
||||
// runEvictionTest then cleans up the testing environment by deleting provided nodes, and ensures that testCondition no longer exists
|
||||
func runEvictionTest(f *framework.Framework, testCondition string, podTestSpecs []podTestSpec, evictionHard string,
|
||||
evictionTestTimeout time.Duration, hasPressureCondition func(*framework.Framework, string) (bool, error)) {
|
||||
func runEvictionTest(f *framework.Framework, testCondition string, podTestSpecs []podTestSpec, evictionTestTimeout time.Duration,
|
||||
hasPressureCondition func(*framework.Framework, string) (bool, error), updateFunction func(initialConfig *componentconfig.KubeletConfiguration)) {
|
||||
|
||||
Context(fmt.Sprintf("when we run containers that should cause %s", testCondition), func() {
|
||||
|
||||
tempSetEvictionHard(f, evictionHard)
|
||||
tempSetCurrentKubeletConfig(f, updateFunction)
|
||||
BeforeEach(func() {
|
||||
By("seting up pods to be used by tests")
|
||||
for _, spec := range podTestSpecs {
|
||||
@ -148,6 +150,11 @@ func runEvictionTest(f *framework.Framework, testCondition string, podTestSpecs
|
||||
})
|
||||
|
||||
It(fmt.Sprintf("should eventually see %s, and then evict all of the correct pods", testCondition), func() {
|
||||
configEnabled, err := isKubeletConfigEnabled(f)
|
||||
framework.ExpectNoError(err)
|
||||
if !configEnabled {
|
||||
framework.Skipf("Dynamic kubelet config must be enabled for this test to run.")
|
||||
}
|
||||
Eventually(func() error {
|
||||
hasPressure, err := hasPressureCondition(f, testCondition)
|
||||
if err != nil {
|
||||
@ -299,14 +306,8 @@ func runEvictionTest(f *framework.Framework, testCondition string, podTestSpecs
|
||||
|
||||
// Returns TRUE if the node has disk pressure due to inodes exists on the node, FALSE otherwise
|
||||
func hasInodePressure(f *framework.Framework, testCondition string) (bool, error) {
|
||||
|
||||
nodeList, err := f.ClientSet.Core().Nodes().List(metav1.ListOptions{})
|
||||
framework.ExpectNoError(err, "getting node list")
|
||||
if len(nodeList.Items) != 1 {
|
||||
return false, fmt.Errorf("expected 1 node, but see %d. List: %v", len(nodeList.Items), nodeList.Items)
|
||||
}
|
||||
|
||||
_, pressure := v1.GetNodeCondition(&nodeList.Items[0].Status, v1.NodeDiskPressure)
|
||||
localNodeStatus := getLocalNode(f).Status
|
||||
_, pressure := v1.GetNodeCondition(&localNodeStatus, v1.NodeDiskPressure)
|
||||
Expect(pressure).NotTo(BeNil())
|
||||
hasPressure := pressure.Status == v1.ConditionTrue
|
||||
By(fmt.Sprintf("checking if pod has %s: %v", testCondition, hasPressure))
|
||||
|
||||
@ -136,7 +136,7 @@ var _ = framework.KubeDescribe("MemoryEviction [Slow] [Serial] [Disruptive]", fu
|
||||
By("creating a guaranteed pod, a burstable pod, and a besteffort pod.")
|
||||
|
||||
// A pod is guaranteed only when requests and limits are specified for all the containers and they are equal.
|
||||
guaranteed := createMemhogPod(f, "guaranteed-", "guaranteed", v1.ResourceRequirements{
|
||||
guaranteed := getMemhogPod("guaranteed-pod", "guaranteed", v1.ResourceRequirements{
|
||||
Requests: v1.ResourceList{
|
||||
"cpu": resource.MustParse("100m"),
|
||||
"memory": resource.MustParse("100Mi"),
|
||||
@ -145,16 +145,22 @@ var _ = framework.KubeDescribe("MemoryEviction [Slow] [Serial] [Disruptive]", fu
|
||||
"cpu": resource.MustParse("100m"),
|
||||
"memory": resource.MustParse("100Mi"),
|
||||
}})
|
||||
guaranteed = f.PodClient().CreateSync(guaranteed)
|
||||
glog.Infof("pod created with name: %s", guaranteed.Name)
|
||||
|
||||
// A pod is burstable if limits and requests do not match across all containers.
|
||||
burstable := createMemhogPod(f, "burstable-", "burstable", v1.ResourceRequirements{
|
||||
burstable := getMemhogPod("burstable-pod", "burstable", v1.ResourceRequirements{
|
||||
Requests: v1.ResourceList{
|
||||
"cpu": resource.MustParse("100m"),
|
||||
"memory": resource.MustParse("100Mi"),
|
||||
}})
|
||||
burstable = f.PodClient().CreateSync(burstable)
|
||||
glog.Infof("pod created with name: %s", burstable.Name)
|
||||
|
||||
// A pod is besteffort if none of its containers have specified any requests or limits.
|
||||
besteffort := createMemhogPod(f, "besteffort-", "besteffort", v1.ResourceRequirements{})
|
||||
// A pod is besteffort if none of its containers have specified any requests or limits .
|
||||
besteffort := getMemhogPod("besteffort-pod", "besteffort", v1.ResourceRequirements{})
|
||||
besteffort = f.PodClient().CreateSync(besteffort)
|
||||
glog.Infof("pod created with name: %s", besteffort.Name)
|
||||
|
||||
// We poll until timeout or all pods are killed.
|
||||
// Inside the func, we check that all pods are in a valid phase with
|
||||
@ -232,7 +238,7 @@ var _ = framework.KubeDescribe("MemoryEviction [Slow] [Serial] [Disruptive]", fu
|
||||
|
||||
})
|
||||
|
||||
func createMemhogPod(f *framework.Framework, genName string, ctnName string, res v1.ResourceRequirements) *v1.Pod {
|
||||
func getMemhogPod(podName string, ctnName string, res v1.ResourceRequirements) *v1.Pod {
|
||||
env := []v1.EnvVar{
|
||||
{
|
||||
Name: "MEMORY_LIMIT",
|
||||
@ -256,9 +262,9 @@ func createMemhogPod(f *framework.Framework, genName string, ctnName string, res
|
||||
memLimit = "$(MEMORY_LIMIT)"
|
||||
}
|
||||
|
||||
pod := &v1.Pod{
|
||||
return &v1.Pod{
|
||||
ObjectMeta: metav1.ObjectMeta{
|
||||
GenerateName: genName,
|
||||
Name: podName,
|
||||
},
|
||||
Spec: v1.PodSpec{
|
||||
RestartPolicy: v1.RestartPolicyNever,
|
||||
@ -277,8 +283,4 @@ func createMemhogPod(f *framework.Framework, genName string, ctnName string, res
|
||||
},
|
||||
},
|
||||
}
|
||||
// The generated pod.Name will be on the pod spec returned by CreateSync
|
||||
pod = f.PodClient().CreateSync(pod)
|
||||
glog.Infof("pod created with name: %s", pod.Name)
|
||||
return pod
|
||||
}
|
||||
|
||||
@ -86,13 +86,6 @@ func getCurrentKubeletConfig() (*componentconfig.KubeletConfiguration, error) {
|
||||
return kubeCfg, nil
|
||||
}
|
||||
|
||||
// Convenience method to set the evictionHard threshold during the current context.
|
||||
func tempSetEvictionHard(f *framework.Framework, evictionHard string) {
|
||||
tempSetCurrentKubeletConfig(f, func(initialConfig *componentconfig.KubeletConfiguration) {
|
||||
initialConfig.EvictionHard = evictionHard
|
||||
})
|
||||
}
|
||||
|
||||
// Must be called within a Context. Allows the function to modify the KubeletConfiguration during the BeforeEach of the context.
|
||||
// The change is reverted in the AfterEach of the context.
|
||||
// Returns true on success.
|
||||
|
||||
Loading…
Reference in New Issue
Block a user