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https://github.com/k3s-io/kubernetes.git
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Merge pull request #102915 from wzshiming/feat/graceful-shutdown-based-on-pod-priority
Graceful Node Shutdown Based On Pod Priority
This commit is contained in:
commit
91b7fb4dc9
@ -381,6 +381,7 @@ API rule violation: list_type_missing,k8s.io/kubelet/config/v1beta1,KubeletConfi
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API rule violation: list_type_missing,k8s.io/kubelet/config/v1beta1,KubeletConfiguration,EnforceNodeAllocatable
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API rule violation: list_type_missing,k8s.io/kubelet/config/v1beta1,KubeletConfiguration,RegisterWithTaints
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API rule violation: list_type_missing,k8s.io/kubelet/config/v1beta1,KubeletConfiguration,ReservedMemory
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API rule violation: list_type_missing,k8s.io/kubelet/config/v1beta1,KubeletConfiguration,ShutdownGracePeriodByPodPriority
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API rule violation: list_type_missing,k8s.io/kubelet/config/v1beta1,KubeletConfiguration,TLSCipherSuites
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API rule violation: list_type_missing,k8s.io/metrics/pkg/apis/metrics/v1alpha1,PodMetrics,Containers
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API rule violation: list_type_missing,k8s.io/metrics/pkg/apis/metrics/v1beta1,PodMetrics,Containers
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@ -585,6 +585,12 @@ const (
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// Adds support for kubelet to detect node shutdown and gracefully terminate pods prior to the node being shutdown.
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GracefulNodeShutdown featuregate.Feature = "GracefulNodeShutdown"
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// owner: @wzshiming
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// alpha: v1.23
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//
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// Make the kubelet use shutdown configuration based on pod priority values for graceful shutdown.
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GracefulNodeShutdownBasedOnPodPriority featuregate.Feature = "GracefulNodeShutdownBasedOnPodPriority"
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// owner: @andrewsykim @uablrek
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// kep: http://kep.k8s.io/1864
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// alpha: v1.20
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@ -927,6 +933,7 @@ var defaultKubernetesFeatureGates = map[featuregate.Feature]featuregate.FeatureS
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ExecProbeTimeout: {Default: true, PreRelease: featuregate.GA}, // lock to default and remove after v1.22 based on KEP #1972 update
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KubeletCredentialProviders: {Default: false, PreRelease: featuregate.Alpha},
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GracefulNodeShutdown: {Default: true, PreRelease: featuregate.Beta},
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GracefulNodeShutdownBasedOnPodPriority: {Default: false, PreRelease: featuregate.Alpha},
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ServiceLBNodePortControl: {Default: true, PreRelease: featuregate.Beta},
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MixedProtocolLBService: {Default: false, PreRelease: featuregate.Alpha},
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VolumeCapacityPriority: {Default: false, PreRelease: featuregate.Alpha},
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@ -267,6 +267,8 @@ var (
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"SeccompDefault",
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"SerializeImagePulls",
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"ShowHiddenMetricsForVersion",
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"ShutdownGracePeriodByPodPriority[*].Priority",
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"ShutdownGracePeriodByPodPriority[*].ShutdownGracePeriodSeconds",
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"StreamingConnectionIdleTimeout.Duration",
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"SyncFrequency.Duration",
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"SystemCgroups",
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@ -397,6 +397,15 @@ type KubeletConfiguration struct {
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// +featureGate=GracefulNodeShutdown
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// +optional
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ShutdownGracePeriodCriticalPods metav1.Duration
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// ShutdownGracePeriodByPodPriority specifies the shutdown grace period for Pods based
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// on their associated priority class value.
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// When a shutdown request is received, the Kubelet will initiate shutdown on all pods
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// running on the node with a grace period that depends on the priority of the pod,
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// and then wait for all pods to exit.
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// Each entry in the array represents the graceful shutdown time a pod with a priority
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// class value that lies in the range of that value and the next higher entry in the
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// list when the node is shutting down.
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ShutdownGracePeriodByPodPriority []ShutdownGracePeriodByPodPriority
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// ReservedMemory specifies a comma-separated list of memory reservations for NUMA nodes.
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// The parameter makes sense only in the context of the memory manager feature. The memory manager will not allocate reserved memory for container workloads.
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// For example, if you have a NUMA0 with 10Gi of memory and the ReservedMemory was specified to reserve 1Gi of memory at NUMA0,
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@ -595,6 +604,14 @@ type MemoryReservation struct {
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Limits v1.ResourceList
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}
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// ShutdownGracePeriodByPodPriority specifies the shutdown grace period for Pods based on their associated priority class value
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type ShutdownGracePeriodByPodPriority struct {
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// priority is the priority value associated with the shutdown grace period
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Priority int32
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// shutdownGracePeriodSeconds is the shutdown grace period in seconds
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ShutdownGracePeriodSeconds int64
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}
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type MemorySwapConfiguration struct {
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// swapBehavior configures swap memory available to container workloads. May be one of
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// "", "LimitedSwap": workload combined memory and swap usage cannot exceed pod memory limit
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@ -140,6 +140,16 @@ func RegisterConversions(s *runtime.Scheme) error {
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}); err != nil {
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return err
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}
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if err := s.AddGeneratedConversionFunc((*v1beta1.ShutdownGracePeriodByPodPriority)(nil), (*config.ShutdownGracePeriodByPodPriority)(nil), func(a, b interface{}, scope conversion.Scope) error {
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return Convert_v1beta1_ShutdownGracePeriodByPodPriority_To_config_ShutdownGracePeriodByPodPriority(a.(*v1beta1.ShutdownGracePeriodByPodPriority), b.(*config.ShutdownGracePeriodByPodPriority), scope)
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}); err != nil {
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return err
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}
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if err := s.AddGeneratedConversionFunc((*config.ShutdownGracePeriodByPodPriority)(nil), (*v1beta1.ShutdownGracePeriodByPodPriority)(nil), func(a, b interface{}, scope conversion.Scope) error {
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return Convert_config_ShutdownGracePeriodByPodPriority_To_v1beta1_ShutdownGracePeriodByPodPriority(a.(*config.ShutdownGracePeriodByPodPriority), b.(*v1beta1.ShutdownGracePeriodByPodPriority), scope)
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}); err != nil {
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return err
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}
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return nil
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}
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@ -381,6 +391,7 @@ func autoConvert_v1beta1_KubeletConfiguration_To_config_KubeletConfiguration(in
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}
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out.ShutdownGracePeriod = in.ShutdownGracePeriod
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out.ShutdownGracePeriodCriticalPods = in.ShutdownGracePeriodCriticalPods
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out.ShutdownGracePeriodByPodPriority = *(*[]config.ShutdownGracePeriodByPodPriority)(unsafe.Pointer(&in.ShutdownGracePeriodByPodPriority))
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out.ReservedMemory = *(*[]config.MemoryReservation)(unsafe.Pointer(&in.ReservedMemory))
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if err := v1.Convert_Pointer_bool_To_bool(&in.EnableProfilingHandler, &out.EnableProfilingHandler, s); err != nil {
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return err
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@ -556,6 +567,7 @@ func autoConvert_config_KubeletConfiguration_To_v1beta1_KubeletConfiguration(in
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}
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out.ShutdownGracePeriod = in.ShutdownGracePeriod
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out.ShutdownGracePeriodCriticalPods = in.ShutdownGracePeriodCriticalPods
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out.ShutdownGracePeriodByPodPriority = *(*[]v1beta1.ShutdownGracePeriodByPodPriority)(unsafe.Pointer(&in.ShutdownGracePeriodByPodPriority))
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out.ReservedMemory = *(*[]v1beta1.MemoryReservation)(unsafe.Pointer(&in.ReservedMemory))
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if err := v1.Convert_bool_To_Pointer_bool(&in.EnableProfilingHandler, &out.EnableProfilingHandler, s); err != nil {
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return err
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@ -708,3 +720,25 @@ func autoConvert_config_SerializedNodeConfigSource_To_v1beta1_SerializedNodeConf
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func Convert_config_SerializedNodeConfigSource_To_v1beta1_SerializedNodeConfigSource(in *config.SerializedNodeConfigSource, out *v1beta1.SerializedNodeConfigSource, s conversion.Scope) error {
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return autoConvert_config_SerializedNodeConfigSource_To_v1beta1_SerializedNodeConfigSource(in, out, s)
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}
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func autoConvert_v1beta1_ShutdownGracePeriodByPodPriority_To_config_ShutdownGracePeriodByPodPriority(in *v1beta1.ShutdownGracePeriodByPodPriority, out *config.ShutdownGracePeriodByPodPriority, s conversion.Scope) error {
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out.Priority = in.Priority
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out.ShutdownGracePeriodSeconds = in.ShutdownGracePeriodSeconds
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return nil
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}
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// Convert_v1beta1_ShutdownGracePeriodByPodPriority_To_config_ShutdownGracePeriodByPodPriority is an autogenerated conversion function.
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func Convert_v1beta1_ShutdownGracePeriodByPodPriority_To_config_ShutdownGracePeriodByPodPriority(in *v1beta1.ShutdownGracePeriodByPodPriority, out *config.ShutdownGracePeriodByPodPriority, s conversion.Scope) error {
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return autoConvert_v1beta1_ShutdownGracePeriodByPodPriority_To_config_ShutdownGracePeriodByPodPriority(in, out, s)
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}
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func autoConvert_config_ShutdownGracePeriodByPodPriority_To_v1beta1_ShutdownGracePeriodByPodPriority(in *config.ShutdownGracePeriodByPodPriority, out *v1beta1.ShutdownGracePeriodByPodPriority, s conversion.Scope) error {
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out.Priority = in.Priority
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out.ShutdownGracePeriodSeconds = in.ShutdownGracePeriodSeconds
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return nil
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}
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// Convert_config_ShutdownGracePeriodByPodPriority_To_v1beta1_ShutdownGracePeriodByPodPriority is an autogenerated conversion function.
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func Convert_config_ShutdownGracePeriodByPodPriority_To_v1beta1_ShutdownGracePeriodByPodPriority(in *config.ShutdownGracePeriodByPodPriority, out *v1beta1.ShutdownGracePeriodByPodPriority, s conversion.Scope) error {
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return autoConvert_config_ShutdownGracePeriodByPodPriority_To_v1beta1_ShutdownGracePeriodByPodPriority(in, out, s)
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}
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@ -166,6 +166,16 @@ func ValidateKubeletConfiguration(kc *kubeletconfig.KubeletConfiguration) error
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if (kc.ShutdownGracePeriod.Duration > 0 || kc.ShutdownGracePeriodCriticalPods.Duration > 0) && !localFeatureGate.Enabled(features.GracefulNodeShutdown) {
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allErrors = append(allErrors, fmt.Errorf("invalid configuration: Specifying ShutdownGracePeriod or ShutdownGracePeriodCriticalPods requires feature gate GracefulNodeShutdown"))
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}
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if localFeatureGate.Enabled(features.GracefulNodeShutdownBasedOnPodPriority) {
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if len(kc.ShutdownGracePeriodByPodPriority) != 0 && (kc.ShutdownGracePeriod.Duration > 0 || kc.ShutdownGracePeriodCriticalPods.Duration > 0) {
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allErrors = append(allErrors, fmt.Errorf("invalid configuration: Cannot specify both shutdownGracePeriodByPodPriority and shutdownGracePeriod at the same time"))
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}
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}
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if !localFeatureGate.Enabled(features.GracefulNodeShutdownBasedOnPodPriority) {
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if len(kc.ShutdownGracePeriodByPodPriority) != 0 {
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allErrors = append(allErrors, fmt.Errorf("invalid configuration: Specifying shutdownGracePeriodByPodPriority requires feature gate GracefulNodeShutdownBasedOnPodPriority"))
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}
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}
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if localFeatureGate.Enabled(features.NodeSwap) {
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if kc.MemorySwap.SwapBehavior != "" && kc.MemorySwap.SwapBehavior != kubetypes.LimitedSwap && kc.MemorySwap.SwapBehavior != kubetypes.UnlimitedSwap {
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allErrors = append(allErrors, fmt.Errorf("invalid configuration: MemorySwap.SwapBehavior %v must be one of: LimitedSwap, UnlimitedSwap", kc.MemorySwap.SwapBehavior))
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@ -110,6 +110,7 @@ func TestValidateKubeletConfiguration(t *testing.T) {
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FeatureGates: map[string]bool{
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"CustomCPUCFSQuotaPeriod": true,
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"MemoryQoS": true,
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"GracefulNodeShutdownBasedOnPodPriority": true,
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},
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Logging: componentbaseconfig.LoggingConfiguration{
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Format: "text",
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@ -149,13 +150,20 @@ func TestValidateKubeletConfiguration(t *testing.T) {
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ReservedSystemCPUs: "0-3",
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TopologyManagerScope: kubeletconfig.ContainerTopologyManagerScope,
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TopologyManagerPolicy: kubeletconfig.NoneTopologyManagerPolicy,
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ShutdownGracePeriod: metav1.Duration{Duration: 10 * time.Minute},
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ShutdownGracePeriod: metav1.Duration{Duration: 0},
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ShutdownGracePeriodCriticalPods: metav1.Duration{Duration: 0},
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ShutdownGracePeriodByPodPriority: []kubeletconfig.ShutdownGracePeriodByPodPriority{
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{
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Priority: 0,
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ShutdownGracePeriodSeconds: 10,
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},
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},
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MemorySwap: kubeletconfig.MemorySwapConfiguration{SwapBehavior: kubetypes.UnlimitedSwap},
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MemoryThrottlingFactor: utilpointer.Float64Ptr(0.5),
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FeatureGates: map[string]bool{
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"CustomCPUCFSQuotaPeriod": true,
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"GracefulNodeShutdown": true,
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"GracefulNodeShutdownBasedOnPodPriority": true,
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"NodeSwap": true,
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"MemoryQoS": true,
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},
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@ -194,12 +202,18 @@ func TestValidateKubeletConfiguration(t *testing.T) {
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CPUCFSQuotaPeriod: metav1.Duration{Duration: 100 * time.Millisecond},
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ShutdownGracePeriod: metav1.Duration{Duration: 30 * time.Second},
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ShutdownGracePeriodCriticalPods: metav1.Duration{Duration: 60 * time.Second},
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ShutdownGracePeriodByPodPriority: []kubeletconfig.ShutdownGracePeriodByPodPriority{
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{
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Priority: 0,
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ShutdownGracePeriodSeconds: 10,
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},
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},
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Logging: componentbaseconfig.LoggingConfiguration{
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Format: "",
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},
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MemorySwap: kubeletconfig.MemorySwapConfiguration{SwapBehavior: kubetypes.UnlimitedSwap},
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}
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const numErrsErrorCase1 = 30
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const numErrsErrorCase1 = 31
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if allErrors := ValidateKubeletConfiguration(errorCase1); len(allErrors.(utilerrors.Aggregate).Errors()) != numErrsErrorCase1 {
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t.Errorf("expect %d errors, got %v", numErrsErrorCase1, len(allErrors.(utilerrors.Aggregate).Errors()))
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}
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|
21
pkg/kubelet/apis/config/zz_generated.deepcopy.go
generated
21
pkg/kubelet/apis/config/zz_generated.deepcopy.go
generated
@ -283,6 +283,11 @@ func (in *KubeletConfiguration) DeepCopyInto(out *KubeletConfiguration) {
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in.Logging.DeepCopyInto(&out.Logging)
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out.ShutdownGracePeriod = in.ShutdownGracePeriod
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out.ShutdownGracePeriodCriticalPods = in.ShutdownGracePeriodCriticalPods
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if in.ShutdownGracePeriodByPodPriority != nil {
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in, out := &in.ShutdownGracePeriodByPodPriority, &out.ShutdownGracePeriodByPodPriority
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*out = make([]ShutdownGracePeriodByPodPriority, len(*in))
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copy(*out, *in)
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}
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if in.ReservedMemory != nil {
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in, out := &in.ReservedMemory, &out.ReservedMemory
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*out = make([]MemoryReservation, len(*in))
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@ -438,3 +443,19 @@ func (in *SerializedNodeConfigSource) DeepCopyObject() runtime.Object {
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}
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return nil
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}
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// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
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func (in *ShutdownGracePeriodByPodPriority) DeepCopyInto(out *ShutdownGracePeriodByPodPriority) {
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*out = *in
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return
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}
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// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ShutdownGracePeriodByPodPriority.
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func (in *ShutdownGracePeriodByPodPriority) DeepCopy() *ShutdownGracePeriodByPodPriority {
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if in == nil {
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return nil
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}
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out := new(ShutdownGracePeriodByPodPriority)
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in.DeepCopyInto(out)
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return out
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}
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|
@ -875,6 +875,7 @@ func NewMainKubelet(kubeCfg *kubeletconfiginternal.KubeletConfiguration,
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SyncNodeStatusFunc: klet.syncNodeStatus,
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ShutdownGracePeriodRequested: kubeCfg.ShutdownGracePeriod.Duration,
|
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ShutdownGracePeriodCriticalPods: kubeCfg.ShutdownGracePeriodCriticalPods.Duration,
|
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ShutdownGracePeriodByPodPriority: kubeCfg.ShutdownGracePeriodByPodPriority,
|
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})
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klet.shutdownManager = shutdownManager
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klet.admitHandlers.AddPodAdmitHandler(shutdownAdmitHandler)
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|
@ -21,6 +21,7 @@ import (
|
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|
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v1 "k8s.io/api/core/v1"
|
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"k8s.io/client-go/tools/record"
|
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kubeletconfig "k8s.io/kubernetes/pkg/kubelet/apis/config"
|
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"k8s.io/kubernetes/pkg/kubelet/eviction"
|
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"k8s.io/kubernetes/pkg/kubelet/lifecycle"
|
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"k8s.io/kubernetes/pkg/kubelet/prober"
|
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@ -44,6 +45,7 @@ type Config struct {
|
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SyncNodeStatusFunc func()
|
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ShutdownGracePeriodRequested time.Duration
|
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ShutdownGracePeriodCriticalPods time.Duration
|
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ShutdownGracePeriodByPodPriority []kubeletconfig.ShutdownGracePeriodByPodPriority
|
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Clock clock.Clock
|
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}
|
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|
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|
@ -22,6 +22,7 @@ package nodeshutdown
|
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|
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import (
|
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"fmt"
|
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"sort"
|
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"sync"
|
||||
"time"
|
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|
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@ -29,13 +30,14 @@ import (
|
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utilfeature "k8s.io/apiserver/pkg/util/feature"
|
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"k8s.io/client-go/tools/record"
|
||||
"k8s.io/klog/v2"
|
||||
"k8s.io/kubernetes/pkg/apis/scheduling"
|
||||
"k8s.io/kubernetes/pkg/features"
|
||||
kubeletconfig "k8s.io/kubernetes/pkg/kubelet/apis/config"
|
||||
kubeletevents "k8s.io/kubernetes/pkg/kubelet/events"
|
||||
"k8s.io/kubernetes/pkg/kubelet/eviction"
|
||||
"k8s.io/kubernetes/pkg/kubelet/lifecycle"
|
||||
"k8s.io/kubernetes/pkg/kubelet/nodeshutdown/systemd"
|
||||
"k8s.io/kubernetes/pkg/kubelet/prober"
|
||||
kubelettypes "k8s.io/kubernetes/pkg/kubelet/types"
|
||||
"k8s.io/utils/clock"
|
||||
)
|
||||
|
||||
@ -66,8 +68,7 @@ type managerImpl struct {
|
||||
nodeRef *v1.ObjectReference
|
||||
probeManager prober.Manager
|
||||
|
||||
shutdownGracePeriodRequested time.Duration
|
||||
shutdownGracePeriodCriticalPods time.Duration
|
||||
shutdownGracePeriodByPodPriority []kubeletconfig.ShutdownGracePeriodByPodPriority
|
||||
|
||||
getPods eviction.ActivePodsFunc
|
||||
killPodFunc eviction.KillPodFunc
|
||||
@ -84,11 +85,29 @@ type managerImpl struct {
|
||||
|
||||
// NewManager returns a new node shutdown manager.
|
||||
func NewManager(conf *Config) (Manager, lifecycle.PodAdmitHandler) {
|
||||
if !utilfeature.DefaultFeatureGate.Enabled(features.GracefulNodeShutdown) ||
|
||||
(conf.ShutdownGracePeriodRequested == 0 && conf.ShutdownGracePeriodCriticalPods == 0) {
|
||||
if !utilfeature.DefaultFeatureGate.Enabled(features.GracefulNodeShutdown) {
|
||||
m := managerStub{}
|
||||
return m, m
|
||||
}
|
||||
|
||||
shutdownGracePeriodByPodPriority := conf.ShutdownGracePeriodByPodPriority
|
||||
// Migration from the original configuration
|
||||
if !utilfeature.DefaultFeatureGate.Enabled(features.GracefulNodeShutdownBasedOnPodPriority) ||
|
||||
len(shutdownGracePeriodByPodPriority) == 0 {
|
||||
shutdownGracePeriodByPodPriority = migrateConfig(conf.ShutdownGracePeriodRequested, conf.ShutdownGracePeriodCriticalPods)
|
||||
}
|
||||
|
||||
// Disable if the configuration is empty
|
||||
if len(shutdownGracePeriodByPodPriority) == 0 {
|
||||
m := managerStub{}
|
||||
return m, m
|
||||
}
|
||||
|
||||
// Sort by priority from low to high
|
||||
sort.Slice(shutdownGracePeriodByPodPriority, func(i, j int) bool {
|
||||
return shutdownGracePeriodByPodPriority[i].Priority < shutdownGracePeriodByPodPriority[j].Priority
|
||||
})
|
||||
|
||||
if conf.Clock == nil {
|
||||
conf.Clock = clock.RealClock{}
|
||||
}
|
||||
@ -99,13 +118,13 @@ func NewManager(conf *Config) (Manager, lifecycle.PodAdmitHandler) {
|
||||
getPods: conf.GetPodsFunc,
|
||||
killPodFunc: conf.KillPodFunc,
|
||||
syncNodeStatus: conf.SyncNodeStatusFunc,
|
||||
shutdownGracePeriodRequested: conf.ShutdownGracePeriodRequested,
|
||||
shutdownGracePeriodCriticalPods: conf.ShutdownGracePeriodCriticalPods,
|
||||
shutdownGracePeriodByPodPriority: shutdownGracePeriodByPodPriority,
|
||||
clock: conf.Clock,
|
||||
}
|
||||
klog.InfoS("Creating node shutdown manager",
|
||||
"shutdownGracePeriodRequested", conf.ShutdownGracePeriodRequested,
|
||||
"shutdownGracePeriodCriticalPods", conf.ShutdownGracePeriodCriticalPods,
|
||||
"shutdownGracePeriodByPodPriority", shutdownGracePeriodByPodPriority,
|
||||
)
|
||||
return manager, manager
|
||||
}
|
||||
@ -159,9 +178,9 @@ func (m *managerImpl) start() (chan struct{}, error) {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// If the logind's InhibitDelayMaxUSec as configured in (logind.conf) is less than shutdownGracePeriodRequested, attempt to update the value to shutdownGracePeriodRequested.
|
||||
if m.shutdownGracePeriodRequested > currentInhibitDelay {
|
||||
err := m.dbusCon.OverrideInhibitDelay(m.shutdownGracePeriodRequested)
|
||||
// If the logind's InhibitDelayMaxUSec as configured in (logind.conf) is less than periodRequested, attempt to update the value to periodRequested.
|
||||
if periodRequested := m.periodRequested(); periodRequested > currentInhibitDelay {
|
||||
err := m.dbusCon.OverrideInhibitDelay(periodRequested)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("unable to override inhibit delay by shutdown manager: %v", err)
|
||||
}
|
||||
@ -177,8 +196,8 @@ func (m *managerImpl) start() (chan struct{}, error) {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if m.shutdownGracePeriodRequested > updatedInhibitDelay {
|
||||
return nil, fmt.Errorf("node shutdown manager was unable to update logind InhibitDelayMaxSec to %v (ShutdownGracePeriod), current value of InhibitDelayMaxSec (%v) is less than requested ShutdownGracePeriod", m.shutdownGracePeriodRequested, updatedInhibitDelay)
|
||||
if periodRequested > updatedInhibitDelay {
|
||||
return nil, fmt.Errorf("node shutdown manager was unable to update logind InhibitDelayMaxSec to %v (ShutdownGracePeriod), current value of InhibitDelayMaxSec (%v) is less than requested ShutdownGracePeriod", periodRequested, updatedInhibitDelay)
|
||||
}
|
||||
}
|
||||
|
||||
@ -270,21 +289,21 @@ func (m *managerImpl) processShutdownEvent() error {
|
||||
klog.V(1).InfoS("Shutdown manager processing shutdown event")
|
||||
activePods := m.getPods()
|
||||
|
||||
nonCriticalPodGracePeriod := m.shutdownGracePeriodRequested - m.shutdownGracePeriodCriticalPods
|
||||
groups := groupByPriority(m.shutdownGracePeriodByPodPriority, activePods)
|
||||
for _, group := range groups {
|
||||
// If there are no pods in a particular range,
|
||||
// then do not wait for pods in that priority range.
|
||||
if len(group.Pods) == 0 {
|
||||
continue
|
||||
}
|
||||
|
||||
var wg sync.WaitGroup
|
||||
wg.Add(len(activePods))
|
||||
for _, pod := range activePods {
|
||||
go func(pod *v1.Pod) {
|
||||
wg.Add(len(group.Pods))
|
||||
for _, pod := range group.Pods {
|
||||
go func(pod *v1.Pod, group podShutdownGroup) {
|
||||
defer wg.Done()
|
||||
|
||||
var gracePeriodOverride int64
|
||||
if kubelettypes.IsCriticalPod(pod) {
|
||||
gracePeriodOverride = int64(m.shutdownGracePeriodCriticalPods.Seconds())
|
||||
m.clock.Sleep(nonCriticalPodGracePeriod)
|
||||
} else {
|
||||
gracePeriodOverride = int64(nonCriticalPodGracePeriod.Seconds())
|
||||
}
|
||||
gracePeriodOverride := group.ShutdownGracePeriodSeconds
|
||||
|
||||
// Stop probes for the pod
|
||||
m.probeManager.RemovePod(pod)
|
||||
@ -295,6 +314,7 @@ func (m *managerImpl) processShutdownEvent() error {
|
||||
}
|
||||
|
||||
klog.V(1).InfoS("Shutdown manager killing pod with gracePeriod", "pod", klog.KObj(pod), "gracePeriod", gracePeriodOverride)
|
||||
|
||||
if err := m.killPodFunc(pod, false, &gracePeriodOverride, func(status *v1.PodStatus) {
|
||||
status.Message = nodeShutdownMessage
|
||||
status.Reason = nodeShutdownReason
|
||||
@ -303,7 +323,7 @@ func (m *managerImpl) processShutdownEvent() error {
|
||||
} else {
|
||||
klog.V(1).InfoS("Shutdown manager finished killing pod", "pod", klog.KObj(pod))
|
||||
}
|
||||
}(pod)
|
||||
}(pod, group)
|
||||
}
|
||||
|
||||
c := make(chan struct{})
|
||||
@ -312,12 +332,11 @@ func (m *managerImpl) processShutdownEvent() error {
|
||||
wg.Wait()
|
||||
}()
|
||||
|
||||
// We want to ensure that inhibitLock is released, so only wait up to the shutdownGracePeriodRequested timeout.
|
||||
select {
|
||||
case <-c:
|
||||
break
|
||||
case <-time.After(m.shutdownGracePeriodRequested):
|
||||
klog.V(1).InfoS("Shutdown manager pod killing time out", "gracePeriod", m.shutdownGracePeriodRequested)
|
||||
case <-time.After(time.Duration(group.ShutdownGracePeriodSeconds) * time.Second):
|
||||
klog.V(1).InfoS("Shutdown manager pod killing time out", "gracePeriod", group.ShutdownGracePeriodSeconds, "priority", group.Priority)
|
||||
}
|
||||
}
|
||||
|
||||
m.dbusCon.ReleaseInhibitLock(m.inhibitLock)
|
||||
@ -325,3 +344,78 @@ func (m *managerImpl) processShutdownEvent() error {
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (m *managerImpl) periodRequested() time.Duration {
|
||||
var sum int64
|
||||
for _, period := range m.shutdownGracePeriodByPodPriority {
|
||||
sum += period.ShutdownGracePeriodSeconds
|
||||
}
|
||||
return time.Duration(sum) * time.Second
|
||||
}
|
||||
|
||||
func migrateConfig(shutdownGracePeriodRequested, shutdownGracePeriodCriticalPods time.Duration) []kubeletconfig.ShutdownGracePeriodByPodPriority {
|
||||
if shutdownGracePeriodRequested == 0 {
|
||||
return nil
|
||||
}
|
||||
defaultPriority := shutdownGracePeriodRequested - shutdownGracePeriodCriticalPods
|
||||
if defaultPriority < 0 {
|
||||
return nil
|
||||
}
|
||||
criticalPriority := shutdownGracePeriodRequested - defaultPriority
|
||||
if criticalPriority < 0 {
|
||||
return nil
|
||||
}
|
||||
return []kubeletconfig.ShutdownGracePeriodByPodPriority{
|
||||
{
|
||||
Priority: scheduling.DefaultPriorityWhenNoDefaultClassExists,
|
||||
ShutdownGracePeriodSeconds: int64(defaultPriority / time.Second),
|
||||
},
|
||||
{
|
||||
Priority: scheduling.SystemCriticalPriority,
|
||||
ShutdownGracePeriodSeconds: int64(criticalPriority / time.Second),
|
||||
},
|
||||
}
|
||||
}
|
||||
|
||||
func groupByPriority(shutdownGracePeriodByPodPriority []kubeletconfig.ShutdownGracePeriodByPodPriority, pods []*v1.Pod) []podShutdownGroup {
|
||||
groups := make([]podShutdownGroup, 0, len(shutdownGracePeriodByPodPriority))
|
||||
for _, period := range shutdownGracePeriodByPodPriority {
|
||||
groups = append(groups, podShutdownGroup{
|
||||
ShutdownGracePeriodByPodPriority: period,
|
||||
})
|
||||
}
|
||||
|
||||
for _, pod := range pods {
|
||||
var priority int32
|
||||
if pod.Spec.Priority != nil {
|
||||
priority = *pod.Spec.Priority
|
||||
}
|
||||
|
||||
// Find the group index according to the priority.
|
||||
index := sort.Search(len(groups), func(i int) bool {
|
||||
return groups[i].Priority >= priority
|
||||
})
|
||||
|
||||
// 1. Those higher than the highest priority default to the highest priority
|
||||
// 2. Those lower than the lowest priority default to the lowest priority
|
||||
// 3. Those boundary priority default to the lower priority
|
||||
// if priority of pod is:
|
||||
// groups[index-1].Priority <= pod priority < groups[index].Priority
|
||||
// in which case we want to pick lower one (i.e index-1)
|
||||
if index == len(groups) {
|
||||
index = len(groups) - 1
|
||||
} else if index < 0 {
|
||||
index = 0
|
||||
} else if index > 0 && groups[index].Priority > priority {
|
||||
index--
|
||||
}
|
||||
|
||||
groups[index].Pods = append(groups[index].Pods, pod)
|
||||
}
|
||||
return groups
|
||||
}
|
||||
|
||||
type podShutdownGroup struct {
|
||||
kubeletconfig.ShutdownGracePeriodByPodPriority
|
||||
Pods []*v1.Pod
|
||||
}
|
||||
|
@ -35,6 +35,7 @@ import (
|
||||
featuregatetesting "k8s.io/component-base/featuregate/testing"
|
||||
"k8s.io/kubernetes/pkg/apis/scheduling"
|
||||
pkgfeatures "k8s.io/kubernetes/pkg/features"
|
||||
kubeletconfig "k8s.io/kubernetes/pkg/kubelet/apis/config"
|
||||
"k8s.io/kubernetes/pkg/kubelet/nodeshutdown/systemd"
|
||||
probetest "k8s.io/kubernetes/pkg/kubelet/prober/testing"
|
||||
testingclock "k8s.io/utils/clock/testing"
|
||||
@ -81,12 +82,7 @@ func (f *fakeDbus) OverrideInhibitDelay(inhibitDelayMax time.Duration) error {
|
||||
return nil
|
||||
}
|
||||
|
||||
func makePod(name string, criticalPod bool, terminationGracePeriod *int64) *v1.Pod {
|
||||
var priority int32
|
||||
if criticalPod {
|
||||
priority = scheduling.SystemCriticalPriority
|
||||
}
|
||||
|
||||
func makePod(name string, priority int32, terminationGracePeriod *int64) *v1.Pod {
|
||||
return &v1.Pod{
|
||||
ObjectMeta: metav1.ObjectMeta{
|
||||
Name: name,
|
||||
@ -104,15 +100,15 @@ func TestManager(t *testing.T) {
|
||||
defer func() {
|
||||
systemDbus = systemDbusTmp
|
||||
}()
|
||||
normalPodNoGracePeriod := makePod("normal-pod-nil-grace-period", false /* criticalPod */, nil /* terminationGracePeriod */)
|
||||
criticalPodNoGracePeriod := makePod("critical-pod-nil-grace-period", true /* criticalPod */, nil /* terminationGracePeriod */)
|
||||
normalPodNoGracePeriod := makePod("normal-pod-nil-grace-period", scheduling.DefaultPriorityWhenNoDefaultClassExists, nil /* terminationGracePeriod */)
|
||||
criticalPodNoGracePeriod := makePod("critical-pod-nil-grace-period", scheduling.SystemCriticalPriority, nil /* terminationGracePeriod */)
|
||||
|
||||
shortGracePeriod := int64(2)
|
||||
normalPodGracePeriod := makePod("normal-pod-grace-period", false /* criticalPod */, &shortGracePeriod /* terminationGracePeriod */)
|
||||
criticalPodGracePeriod := makePod("critical-pod-grace-period", true /* criticalPod */, &shortGracePeriod /* terminationGracePeriod */)
|
||||
normalPodGracePeriod := makePod("normal-pod-grace-period", scheduling.DefaultPriorityWhenNoDefaultClassExists, &shortGracePeriod /* terminationGracePeriod */)
|
||||
criticalPodGracePeriod := makePod("critical-pod-grace-period", scheduling.SystemCriticalPriority, &shortGracePeriod /* terminationGracePeriod */)
|
||||
|
||||
longGracePeriod := int64(1000)
|
||||
normalPodLongGracePeriod := makePod("normal-pod-long-grace-period", false /* criticalPod */, &longGracePeriod /* terminationGracePeriod */)
|
||||
normalPodLongGracePeriod := makePod("normal-pod-long-grace-period", scheduling.DefaultPriorityWhenNoDefaultClassExists, &longGracePeriod /* terminationGracePeriod */)
|
||||
|
||||
var tests = []struct {
|
||||
desc string
|
||||
@ -256,7 +252,9 @@ func TestManager(t *testing.T) {
|
||||
lock.Unlock()
|
||||
|
||||
if tc.expectedError != nil {
|
||||
if !strings.Contains(err.Error(), tc.expectedError.Error()) {
|
||||
if err == nil {
|
||||
t.Errorf("unexpected error message. Got: <nil> want %s", tc.expectedError.Error())
|
||||
} else if !strings.Contains(err.Error(), tc.expectedError.Error()) {
|
||||
t.Errorf("unexpected error message. Got: %s want %s", err.Error(), tc.expectedError.Error())
|
||||
}
|
||||
} else {
|
||||
@ -266,7 +264,11 @@ func TestManager(t *testing.T) {
|
||||
assert.Equal(t, manager.Admit(nil).Admit, true)
|
||||
|
||||
// Send fake shutdown event
|
||||
fakeShutdownChan <- true
|
||||
select {
|
||||
case fakeShutdownChan <- true:
|
||||
case <-time.After(1 * time.Second):
|
||||
t.Fatal()
|
||||
}
|
||||
|
||||
// Wait for all the pods to be killed
|
||||
killedPodsToGracePeriods := map[string]int64{}
|
||||
@ -413,3 +415,196 @@ func TestRestart(t *testing.T) {
|
||||
shutdownChanMut.Unlock()
|
||||
}
|
||||
}
|
||||
|
||||
func Test_migrateConfig(t *testing.T) {
|
||||
type shutdownConfig struct {
|
||||
shutdownGracePeriodRequested time.Duration
|
||||
shutdownGracePeriodCriticalPods time.Duration
|
||||
}
|
||||
tests := []struct {
|
||||
name string
|
||||
args shutdownConfig
|
||||
want []kubeletconfig.ShutdownGracePeriodByPodPriority
|
||||
}{
|
||||
{
|
||||
name: "both shutdownGracePeriodRequested and shutdownGracePeriodCriticalPods",
|
||||
args: shutdownConfig{
|
||||
shutdownGracePeriodRequested: 300 * time.Second,
|
||||
shutdownGracePeriodCriticalPods: 120 * time.Second,
|
||||
},
|
||||
want: []kubeletconfig.ShutdownGracePeriodByPodPriority{
|
||||
{
|
||||
Priority: scheduling.DefaultPriorityWhenNoDefaultClassExists,
|
||||
ShutdownGracePeriodSeconds: 180,
|
||||
},
|
||||
{
|
||||
Priority: scheduling.SystemCriticalPriority,
|
||||
ShutdownGracePeriodSeconds: 120,
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
name: "only shutdownGracePeriodRequested",
|
||||
args: shutdownConfig{
|
||||
shutdownGracePeriodRequested: 100 * time.Second,
|
||||
shutdownGracePeriodCriticalPods: 0 * time.Second,
|
||||
},
|
||||
want: []kubeletconfig.ShutdownGracePeriodByPodPriority{
|
||||
{
|
||||
Priority: scheduling.DefaultPriorityWhenNoDefaultClassExists,
|
||||
ShutdownGracePeriodSeconds: 100,
|
||||
},
|
||||
{
|
||||
Priority: scheduling.SystemCriticalPriority,
|
||||
ShutdownGracePeriodSeconds: 0,
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
name: "empty configuration",
|
||||
args: shutdownConfig{
|
||||
shutdownGracePeriodRequested: 0 * time.Second,
|
||||
shutdownGracePeriodCriticalPods: 0 * time.Second,
|
||||
},
|
||||
want: nil,
|
||||
},
|
||||
{
|
||||
name: "wrong configuration",
|
||||
args: shutdownConfig{
|
||||
shutdownGracePeriodRequested: 1 * time.Second,
|
||||
shutdownGracePeriodCriticalPods: 100 * time.Second,
|
||||
},
|
||||
want: nil,
|
||||
},
|
||||
}
|
||||
for _, tt := range tests {
|
||||
t.Run(tt.name, func(t *testing.T) {
|
||||
if got := migrateConfig(tt.args.shutdownGracePeriodRequested, tt.args.shutdownGracePeriodCriticalPods); !assert.Equal(t, tt.want, got) {
|
||||
t.Errorf("migrateConfig() = %v, want %v", got, tt.want)
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
func Test_groupByPriority(t *testing.T) {
|
||||
type args struct {
|
||||
shutdownGracePeriodByPodPriority []kubeletconfig.ShutdownGracePeriodByPodPriority
|
||||
pods []*v1.Pod
|
||||
}
|
||||
tests := []struct {
|
||||
name string
|
||||
args args
|
||||
want []podShutdownGroup
|
||||
}{
|
||||
{
|
||||
name: "migrate config",
|
||||
args: args{
|
||||
shutdownGracePeriodByPodPriority: migrateConfig(300*time.Second /* shutdownGracePeriodRequested */, 120*time.Second /* shutdownGracePeriodCriticalPods */),
|
||||
pods: []*v1.Pod{
|
||||
makePod("normal-pod", scheduling.DefaultPriorityWhenNoDefaultClassExists, nil),
|
||||
makePod("highest-user-definable-pod", scheduling.HighestUserDefinablePriority, nil),
|
||||
makePod("critical-pod", scheduling.SystemCriticalPriority, nil),
|
||||
},
|
||||
},
|
||||
want: []podShutdownGroup{
|
||||
{
|
||||
ShutdownGracePeriodByPodPriority: kubeletconfig.ShutdownGracePeriodByPodPriority{
|
||||
Priority: scheduling.DefaultPriorityWhenNoDefaultClassExists,
|
||||
ShutdownGracePeriodSeconds: 180,
|
||||
},
|
||||
Pods: []*v1.Pod{
|
||||
makePod("normal-pod", scheduling.DefaultPriorityWhenNoDefaultClassExists, nil),
|
||||
makePod("highest-user-definable-pod", scheduling.HighestUserDefinablePriority, nil),
|
||||
},
|
||||
},
|
||||
{
|
||||
ShutdownGracePeriodByPodPriority: kubeletconfig.ShutdownGracePeriodByPodPriority{
|
||||
Priority: scheduling.SystemCriticalPriority,
|
||||
ShutdownGracePeriodSeconds: 120,
|
||||
},
|
||||
Pods: []*v1.Pod{
|
||||
makePod("critical-pod", scheduling.SystemCriticalPriority, nil),
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
name: "pod priority",
|
||||
args: args{
|
||||
shutdownGracePeriodByPodPriority: []kubeletconfig.ShutdownGracePeriodByPodPriority{
|
||||
{
|
||||
Priority: 1,
|
||||
ShutdownGracePeriodSeconds: 10,
|
||||
},
|
||||
{
|
||||
Priority: 2,
|
||||
ShutdownGracePeriodSeconds: 20,
|
||||
},
|
||||
{
|
||||
Priority: 3,
|
||||
ShutdownGracePeriodSeconds: 30,
|
||||
},
|
||||
{
|
||||
Priority: 4,
|
||||
ShutdownGracePeriodSeconds: 40,
|
||||
},
|
||||
},
|
||||
pods: []*v1.Pod{
|
||||
makePod("pod-0", 0, nil),
|
||||
makePod("pod-1", 1, nil),
|
||||
makePod("pod-2", 2, nil),
|
||||
makePod("pod-3", 3, nil),
|
||||
makePod("pod-4", 4, nil),
|
||||
makePod("pod-5", 5, nil),
|
||||
},
|
||||
},
|
||||
want: []podShutdownGroup{
|
||||
{
|
||||
ShutdownGracePeriodByPodPriority: kubeletconfig.ShutdownGracePeriodByPodPriority{
|
||||
Priority: 1,
|
||||
ShutdownGracePeriodSeconds: 10,
|
||||
},
|
||||
Pods: []*v1.Pod{
|
||||
makePod("pod-0", 0, nil),
|
||||
makePod("pod-1", 1, nil),
|
||||
},
|
||||
},
|
||||
{
|
||||
ShutdownGracePeriodByPodPriority: kubeletconfig.ShutdownGracePeriodByPodPriority{
|
||||
Priority: 2,
|
||||
ShutdownGracePeriodSeconds: 20,
|
||||
},
|
||||
Pods: []*v1.Pod{
|
||||
makePod("pod-2", 2, nil),
|
||||
},
|
||||
},
|
||||
{
|
||||
ShutdownGracePeriodByPodPriority: kubeletconfig.ShutdownGracePeriodByPodPriority{
|
||||
Priority: 3,
|
||||
ShutdownGracePeriodSeconds: 30,
|
||||
},
|
||||
Pods: []*v1.Pod{
|
||||
makePod("pod-3", 3, nil),
|
||||
},
|
||||
},
|
||||
{
|
||||
ShutdownGracePeriodByPodPriority: kubeletconfig.ShutdownGracePeriodByPodPriority{
|
||||
Priority: 4,
|
||||
ShutdownGracePeriodSeconds: 40,
|
||||
},
|
||||
Pods: []*v1.Pod{
|
||||
makePod("pod-4", 4, nil),
|
||||
makePod("pod-5", 5, nil),
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
}
|
||||
for _, tt := range tests {
|
||||
t.Run(tt.name, func(t *testing.T) {
|
||||
if got := groupByPriority(tt.args.shutdownGracePeriodByPodPriority, tt.args.pods); !assert.Equal(t, tt.want, got) {
|
||||
t.Errorf("groupByPriority() = %v, want %v", got, tt.want)
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
|
@ -989,6 +989,35 @@ type KubeletConfiguration struct {
|
||||
// +featureGate=GracefulNodeShutdown
|
||||
// +optional
|
||||
ShutdownGracePeriodCriticalPods metav1.Duration `json:"shutdownGracePeriodCriticalPods,omitempty"`
|
||||
// shutdownGracePeriodByPodPriority specifies the shutdown grace period for Pods based
|
||||
// on their associated priority class value.
|
||||
// When a shutdown request is received, the Kubelet will initiate shutdown on all pods
|
||||
// running on the node with a grace period that depends on the priority of the pod,
|
||||
// and then wait for all pods to exit.
|
||||
// Each entry in the array represents the graceful shutdown time a pod with a priority
|
||||
// class value that lies in the range of that value and the next higher entry in the
|
||||
// list when the node is shutting down.
|
||||
// For example, to allow critical pods 10s to shutdown, priority>=10000 pods 20s to
|
||||
// shutdown, and all remaining pods 30s to shutdown.
|
||||
//
|
||||
// shutdownGracePeriodByPodPriority:
|
||||
// - priority: 2000000000
|
||||
// shutdownGracePeriodSeconds: 10
|
||||
// - priority: 10000
|
||||
// shutdownGracePeriodSeconds: 20
|
||||
// - priority: 0
|
||||
// shutdownGracePeriodSeconds: 30
|
||||
//
|
||||
// The time the Kubelet will wait before exiting will at most be the maximum of all
|
||||
// shutdownGracePeriodSeconds for each priority class range represented on the node.
|
||||
// When all pods have exited or reached their grace periods, the Kubelet will release
|
||||
// the shutdown inhibit lock.
|
||||
// Requires the GracefulNodeShutdown feature gate to be enabled.
|
||||
// This configuration must be empty if either ShutdownGracePeriod or ShutdownGracePeriodCriticalPods is set.
|
||||
// Default: nil
|
||||
// +featureGate=GracefulNodeShutdownBasedOnPodPriority
|
||||
// +optional
|
||||
ShutdownGracePeriodByPodPriority []ShutdownGracePeriodByPodPriority `json:"shutdownGracePeriodByPodPriority,omitempty"`
|
||||
// reservedMemory specifies a comma-separated list of memory reservations for NUMA nodes.
|
||||
// The parameter makes sense only in the context of the memory manager feature.
|
||||
// The memory manager will not allocate reserved memory for container workloads.
|
||||
@ -1136,6 +1165,14 @@ type MemoryReservation struct {
|
||||
Limits v1.ResourceList `json:"limits"`
|
||||
}
|
||||
|
||||
// ShutdownGracePeriodByPodPriority specifies the shutdown grace period for Pods based on their associated priority class value
|
||||
type ShutdownGracePeriodByPodPriority struct {
|
||||
// priority is the priority value associated with the shutdown grace period
|
||||
Priority int32 `json:"priority"`
|
||||
// shutdownGracePeriodSeconds is the shutdown grace period in seconds
|
||||
ShutdownGracePeriodSeconds int64 `json:"shutdownGracePeriodSeconds"`
|
||||
}
|
||||
|
||||
type MemorySwapConfiguration struct {
|
||||
// swapBehavior configures swap memory available to container workloads. May be one of
|
||||
// "", "LimitedSwap": workload combined memory and swap usage cannot exceed pod memory limit
|
||||
|
@ -318,6 +318,11 @@ func (in *KubeletConfiguration) DeepCopyInto(out *KubeletConfiguration) {
|
||||
}
|
||||
out.ShutdownGracePeriod = in.ShutdownGracePeriod
|
||||
out.ShutdownGracePeriodCriticalPods = in.ShutdownGracePeriodCriticalPods
|
||||
if in.ShutdownGracePeriodByPodPriority != nil {
|
||||
in, out := &in.ShutdownGracePeriodByPodPriority, &out.ShutdownGracePeriodByPodPriority
|
||||
*out = make([]ShutdownGracePeriodByPodPriority, len(*in))
|
||||
copy(*out, *in)
|
||||
}
|
||||
if in.ReservedMemory != nil {
|
||||
in, out := &in.ReservedMemory, &out.ReservedMemory
|
||||
*out = make([]MemoryReservation, len(*in))
|
||||
@ -498,3 +503,19 @@ func (in *SerializedNodeConfigSource) DeepCopyObject() runtime.Object {
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
|
||||
func (in *ShutdownGracePeriodByPodPriority) DeepCopyInto(out *ShutdownGracePeriodByPodPriority) {
|
||||
*out = *in
|
||||
return
|
||||
}
|
||||
|
||||
// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ShutdownGracePeriodByPodPriority.
|
||||
func (in *ShutdownGracePeriodByPodPriority) DeepCopy() *ShutdownGracePeriodByPodPriority {
|
||||
if in == nil {
|
||||
return nil
|
||||
}
|
||||
out := new(ShutdownGracePeriodByPodPriority)
|
||||
in.DeepCopyInto(out)
|
||||
return out
|
||||
}
|
||||
|
@ -35,13 +35,15 @@ import (
|
||||
"k8s.io/kubernetes/test/e2e/framework"
|
||||
|
||||
v1 "k8s.io/api/core/v1"
|
||||
schedulingv1 "k8s.io/api/scheduling/v1"
|
||||
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
||||
"k8s.io/kubernetes/pkg/features"
|
||||
kubeletconfig "k8s.io/kubernetes/pkg/kubelet/apis/config"
|
||||
kubelettypes "k8s.io/kubernetes/pkg/kubelet/types"
|
||||
testutils "k8s.io/kubernetes/test/utils"
|
||||
)
|
||||
|
||||
var _ = SIGDescribe("GracefulNodeShutdown [Serial] [NodeFeature:GracefulNodeShutdown]", func() {
|
||||
var _ = SIGDescribe("GracefulNodeShutdown [Serial] [NodeFeature:GracefulNodeShutdown] [NodeFeature:GracefulNodeShutdownBasedOnPodPriority]", func() {
|
||||
f := framework.NewDefaultFramework("graceful-node-shutdown")
|
||||
ginkgo.Context("when gracefully shutting down", func() {
|
||||
|
||||
@ -54,6 +56,10 @@ var _ = SIGDescribe("GracefulNodeShutdown [Serial] [NodeFeature:GracefulNodeShut
|
||||
)
|
||||
|
||||
tempSetCurrentKubeletConfig(f, func(initialConfig *kubeletconfig.KubeletConfiguration) {
|
||||
initialConfig.FeatureGates = map[string]bool{
|
||||
string(features.GracefulNodeShutdown): true,
|
||||
string(features.GracefulNodeShutdownBasedOnPodPriority): false,
|
||||
}
|
||||
initialConfig.ShutdownGracePeriod = metav1.Duration{Duration: nodeShutdownGracePeriod}
|
||||
initialConfig.ShutdownGracePeriodCriticalPods = metav1.Duration{Duration: nodeShutdownGracePeriodCriticalPods}
|
||||
})
|
||||
@ -77,10 +83,10 @@ var _ = SIGDescribe("GracefulNodeShutdown [Serial] [NodeFeature:GracefulNodeShut
|
||||
|
||||
// Define test pods
|
||||
pods := []*v1.Pod{
|
||||
getGracePeriodOverrideTestPod("period-120", nodeName, 120, false),
|
||||
getGracePeriodOverrideTestPod("period-5", nodeName, 5, false),
|
||||
getGracePeriodOverrideTestPod("period-critical-120", nodeName, 120, true),
|
||||
getGracePeriodOverrideTestPod("period-critical-5", nodeName, 5, true),
|
||||
getGracePeriodOverrideTestPod("period-120", nodeName, 120, ""),
|
||||
getGracePeriodOverrideTestPod("period-5", nodeName, 5, ""),
|
||||
getGracePeriodOverrideTestPod("period-critical-120", nodeName, 120, scheduling.SystemNodeCritical),
|
||||
getGracePeriodOverrideTestPod("period-critical-5", nodeName, 5, scheduling.SystemNodeCritical),
|
||||
}
|
||||
|
||||
ginkgo.By("Creating batch pods")
|
||||
@ -117,12 +123,12 @@ var _ = SIGDescribe("GracefulNodeShutdown [Serial] [NodeFeature:GracefulNodeShut
|
||||
for _, pod := range list.Items {
|
||||
if kubelettypes.IsCriticalPod(&pod) {
|
||||
if isPodShutdown(&pod) {
|
||||
framework.Logf("Expecting critcal pod to be running, but it's not currently. Pod: %q, Pod Status %+v", pod.Name, pod.Status)
|
||||
framework.Logf("Expecting critical pod to be running, but it's not currently. Pod: %q, Pod Status %+v", pod.Name, pod.Status)
|
||||
return fmt.Errorf("critical pod should not be shutdown, phase: %s", pod.Status.Phase)
|
||||
}
|
||||
} else {
|
||||
if !isPodShutdown(&pod) {
|
||||
framework.Logf("Expecting non-critcal pod to be shutdown, but it's not currently. Pod: %q, Pod Status %+v", pod.Name, pod.Status)
|
||||
framework.Logf("Expecting non-critical pod to be shutdown, but it's not currently. Pod: %q, Pod Status %+v", pod.Name, pod.Status)
|
||||
return fmt.Errorf("pod should be shutdown, phase: %s", pod.Status.Phase)
|
||||
}
|
||||
}
|
||||
@ -207,9 +213,185 @@ var _ = SIGDescribe("GracefulNodeShutdown [Serial] [NodeFeature:GracefulNodeShut
|
||||
}, nodeStatusUpdateTimeout, pollInterval).Should(gomega.BeNil())
|
||||
})
|
||||
})
|
||||
|
||||
ginkgo.Context("when gracefully shutting down with Pod priority", func() {
|
||||
|
||||
const (
|
||||
pollInterval = 1 * time.Second
|
||||
podStatusUpdateTimeout = 10 * time.Second
|
||||
)
|
||||
|
||||
var (
|
||||
customClassA = getPriorityClass("custom-class-a", 100000)
|
||||
customClassB = getPriorityClass("custom-class-b", 10000)
|
||||
customClassC = getPriorityClass("custom-class-c", 1000)
|
||||
)
|
||||
|
||||
tempSetCurrentKubeletConfig(f, func(initialConfig *kubeletconfig.KubeletConfiguration) {
|
||||
initialConfig.FeatureGates = map[string]bool{
|
||||
string(features.GracefulNodeShutdown): true,
|
||||
string(features.GracefulNodeShutdownBasedOnPodPriority): true,
|
||||
}
|
||||
initialConfig.ShutdownGracePeriodByPodPriority = []kubeletconfig.ShutdownGracePeriodByPodPriority{
|
||||
{
|
||||
Priority: scheduling.SystemCriticalPriority,
|
||||
ShutdownGracePeriodSeconds: int64(podStatusUpdateTimeout / time.Second),
|
||||
},
|
||||
{
|
||||
Priority: customClassA.Value,
|
||||
ShutdownGracePeriodSeconds: int64(podStatusUpdateTimeout / time.Second),
|
||||
},
|
||||
{
|
||||
Priority: customClassB.Value,
|
||||
ShutdownGracePeriodSeconds: int64(podStatusUpdateTimeout / time.Second),
|
||||
},
|
||||
{
|
||||
Priority: customClassC.Value,
|
||||
ShutdownGracePeriodSeconds: int64(podStatusUpdateTimeout / time.Second),
|
||||
},
|
||||
{
|
||||
Priority: scheduling.DefaultPriorityWhenNoDefaultClassExists,
|
||||
ShutdownGracePeriodSeconds: int64(podStatusUpdateTimeout / time.Second),
|
||||
},
|
||||
}
|
||||
|
||||
})
|
||||
|
||||
func getGracePeriodOverrideTestPod(name string, node string, gracePeriod int64, critical bool) *v1.Pod {
|
||||
ginkgo.BeforeEach(func() {
|
||||
ginkgo.By("Wait for the node to be ready")
|
||||
waitForNodeReady()
|
||||
|
||||
for _, customClass := range []*schedulingv1.PriorityClass{customClassA, customClassB, customClassC} {
|
||||
_, err := f.ClientSet.SchedulingV1().PriorityClasses().Create(context.Background(), customClass, metav1.CreateOptions{})
|
||||
framework.ExpectNoError(err)
|
||||
}
|
||||
})
|
||||
|
||||
ginkgo.AfterEach(func() {
|
||||
ginkgo.By("Emitting Shutdown false signal; cancelling the shutdown")
|
||||
err := emitSignalPrepareForShutdown(false)
|
||||
framework.ExpectNoError(err)
|
||||
})
|
||||
|
||||
ginkgo.It("should be able to gracefully shutdown pods with various grace periods", func() {
|
||||
nodeName := getNodeName(f)
|
||||
nodeSelector := fields.Set{
|
||||
"spec.nodeName": nodeName,
|
||||
}.AsSelector().String()
|
||||
|
||||
// Define test pods
|
||||
pods := []*v1.Pod{
|
||||
getGracePeriodOverrideTestPod("period-5", nodeName, 5, ""),
|
||||
getGracePeriodOverrideTestPod("period-c-5", nodeName, 5, customClassC.Name),
|
||||
getGracePeriodOverrideTestPod("period-b-5", nodeName, 5, customClassB.Name),
|
||||
getGracePeriodOverrideTestPod("period-a-5", nodeName, 5, customClassA.Name),
|
||||
getGracePeriodOverrideTestPod("period-critical-5", nodeName, 5, scheduling.SystemNodeCritical),
|
||||
}
|
||||
|
||||
// Expected down steps
|
||||
downSteps := [][]string{
|
||||
{
|
||||
"period-5",
|
||||
},
|
||||
{
|
||||
"period-5",
|
||||
"period-c-5",
|
||||
},
|
||||
{
|
||||
"period-5",
|
||||
"period-c-5",
|
||||
"period-b-5",
|
||||
},
|
||||
{
|
||||
"period-5",
|
||||
"period-c-5",
|
||||
"period-b-5",
|
||||
"period-a-5",
|
||||
},
|
||||
{
|
||||
"period-5",
|
||||
"period-c-5",
|
||||
"period-b-5",
|
||||
"period-a-5",
|
||||
"period-critical-5",
|
||||
},
|
||||
}
|
||||
|
||||
ginkgo.By("Creating batch pods")
|
||||
f.PodClient().CreateBatch(pods)
|
||||
|
||||
list, err := f.PodClient().List(context.TODO(), metav1.ListOptions{
|
||||
FieldSelector: nodeSelector,
|
||||
})
|
||||
framework.ExpectNoError(err)
|
||||
framework.ExpectEqual(len(list.Items), len(pods), "the number of pods is not as expected")
|
||||
|
||||
ginkgo.By("Verifying batch pods are running")
|
||||
for _, pod := range list.Items {
|
||||
if podReady, err := testutils.PodRunningReady(&pod); err != nil || !podReady {
|
||||
framework.Failf("Failed to start batch pod: %v", pod.Name)
|
||||
}
|
||||
}
|
||||
|
||||
ginkgo.By("Emitting shutdown signal")
|
||||
err = emitSignalPrepareForShutdown(true)
|
||||
framework.ExpectNoError(err)
|
||||
|
||||
ginkgo.By("Verifying that pods are shutdown")
|
||||
|
||||
for _, step := range downSteps {
|
||||
gomega.Eventually(func() error {
|
||||
list, err = f.PodClient().List(context.TODO(), metav1.ListOptions{
|
||||
FieldSelector: nodeSelector,
|
||||
})
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
framework.ExpectEqual(len(list.Items), len(pods), "the number of pods is not as expected")
|
||||
for _, pod := range list.Items {
|
||||
shouldShutdown := false
|
||||
for _, podName := range step {
|
||||
if podName == pod.Name {
|
||||
shouldShutdown = true
|
||||
break
|
||||
}
|
||||
}
|
||||
if !shouldShutdown {
|
||||
if pod.Status.Phase != v1.PodRunning {
|
||||
framework.Logf("Expecting pod to be running, but it's not currently. Pod: %q, Pod Status Phase: %q, Pod Status Reason: %q", pod.Name, pod.Status.Phase, pod.Status.Reason)
|
||||
return fmt.Errorf("pod should not be shutdown, phase: %s, reason: %s", pod.Status.Phase, pod.Status.Reason)
|
||||
}
|
||||
} else {
|
||||
if pod.Status.Reason != podShutdownReason {
|
||||
framework.Logf("Expecting pod to be shutdown, but it's not currently. Pod: %q, Pod Status Phase: %q, Pod Status Reason: %q", pod.Name, pod.Status.Phase, pod.Status.Reason)
|
||||
for _, item := range list.Items {
|
||||
framework.Logf("DEBUG %s, %s, %s", item.Name, item.Status.Phase, pod.Status.Reason)
|
||||
}
|
||||
return fmt.Errorf("pod should be shutdown, reason: %s", pod.Status.Reason)
|
||||
}
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}, podStatusUpdateTimeout, pollInterval).Should(gomega.BeNil())
|
||||
}
|
||||
})
|
||||
})
|
||||
})
|
||||
|
||||
func getPriorityClass(name string, value int32) *schedulingv1.PriorityClass {
|
||||
priority := &schedulingv1.PriorityClass{
|
||||
TypeMeta: metav1.TypeMeta{
|
||||
Kind: "PriorityClass",
|
||||
APIVersion: "scheduling.k8s.io/v1",
|
||||
},
|
||||
ObjectMeta: metav1.ObjectMeta{
|
||||
Name: name,
|
||||
},
|
||||
Value: value,
|
||||
}
|
||||
return priority
|
||||
}
|
||||
func getGracePeriodOverrideTestPod(name string, node string, gracePeriod int64, priorityClassName string) *v1.Pod {
|
||||
pod := &v1.Pod{
|
||||
TypeMeta: metav1.TypeMeta{
|
||||
Kind: "Pod",
|
||||
@ -238,14 +420,14 @@ while true; do sleep 5; done
|
||||
NodeName: node,
|
||||
},
|
||||
}
|
||||
if critical {
|
||||
if priorityClassName == scheduling.SystemNodeCritical {
|
||||
pod.ObjectMeta.Annotations = map[string]string{
|
||||
kubelettypes.ConfigSourceAnnotationKey: kubelettypes.FileSource,
|
||||
}
|
||||
pod.Spec.PriorityClassName = scheduling.SystemNodeCritical
|
||||
|
||||
pod.Spec.PriorityClassName = priorityClassName
|
||||
framework.ExpectEqual(kubelettypes.IsCriticalPod(pod), true, "pod should be a critical pod")
|
||||
} else {
|
||||
pod.Spec.PriorityClassName = priorityClassName
|
||||
framework.ExpectEqual(kubelettypes.IsCriticalPod(pod), false, "pod should not be a critical pod")
|
||||
}
|
||||
return pod
|
||||
|
Loading…
Reference in New Issue
Block a user