autoscaling

package
v1.31.3 Latest Latest
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 Go to latest Published: Nov 19, 2024 License: Apache-2.0 Imports: 5 Imported by: 1,910

Documentation

Index

Constants

View Source 
const BehaviorSpecsAnnotation = "autoscaling.alpha.kubernetes.io/behavior"

BehaviorSpecsAnnotation is the annotation which holds the HPA constraints specs when converting the `Behavior` field from autoscaling/v2beta2

View Source 
const DefaultCPUUtilization = 80

DefaultCPUUtilization is the default value for CPU utilization, provided no other metrics are present. This is here because it's used by both the v2beta1 defaulting logic, and the pseudo-defaulting done in v1 conversion.

View Source 
const GroupName = "autoscaling"

GroupName is the group name use in this package

View Source 
const HorizontalPodAutoscalerConditionsAnnotation = "autoscaling.alpha.kubernetes.io/conditions"

HorizontalPodAutoscalerConditionsAnnotation is the annotation which holds the conditions of an HPA when converting the `Conditions` field from autoscaling/v2beta1

View Source 
const MetricSpecsAnnotation = "autoscaling.alpha.kubernetes.io/metrics"

MetricSpecsAnnotation is the annotation which holds non-CPU-utilization HPA metric specs when converting the `Metrics` field from autoscaling/v2beta1

View Source 
const MetricStatusesAnnotation = "autoscaling.alpha.kubernetes.io/current-metrics"

MetricStatusesAnnotation is the annotation which holds non-CPU-utilization HPA metric statuses when converting the `CurrentMetrics` field from autoscaling/v2beta1

Variables

View Source 
var (
	// SchemeBuilder points to a list of functions added to Scheme.
	SchemeBuilder = runtime.NewSchemeBuilder(addKnownTypes)
	// AddToScheme applies all the stored functions to the scheme.
	AddToScheme = SchemeBuilder.AddToScheme
)
View Source 
var SchemeGroupVersion = schema.GroupVersion{Group: GroupName, Version: runtime.APIVersionInternal}

SchemeGroupVersion is group version used to register these objects

Functions

func DeepCopyStringMap added in v1.15.12 

func DeepCopyStringMap(in map[string]string) map[string]string

DeepCopyStringMap returns a copy of the input map. If input is nil, an empty map is returned.

func DropRoundTripHorizontalPodAutoscalerAnnotations added in v1.15.12 

func DropRoundTripHorizontalPodAutoscalerAnnotations(in map[string]string) (out map[string]string, copied bool)

DropRoundTripHorizontalPodAutoscalerAnnotations removes any annotations used to serialize round-tripped fields from later API versions, and returns false if no changes were made and the original input object was returned. It should always be called when converting internal -> external versions, prior to setting any of the custom annotations: 

annotations, copiedAnnotations := DropRoundTripHorizontalPodAutoscalerAnnotations(externalObj.Annotations)
externalObj.Annotations = annotations

if internal.SomeField != nil {
  if !copiedAnnotations {
    externalObj.Annotations = DeepCopyStringMap(externalObj.Annotations)
    copiedAnnotations = true
  }
  externalObj.Annotations[...] = json.Marshal(...)
}

func Kind 

func Kind(kind string) schema.GroupKind

Kind takes an unqualified kind and returns a Group qualified GroupKind

func Resource 

func Resource(resource string) schema.GroupResource

Resource takes an unqualified resource and returns a Group qualified GroupResource

Types

type ConditionStatus added in v1.7.0 

type ConditionStatus string

ConditionStatus indicates the status of a condition (true, false, or unknown). 

const (
	ConditionTrue    ConditionStatus = "True"
	ConditionFalse   ConditionStatus = "False"
	ConditionUnknown ConditionStatus = "Unknown"
)

These are valid condition statuses. "ConditionTrue" means a resource is in the condition; "ConditionFalse" means a resource is not in the condition; "ConditionUnknown" means kubernetes can't decide if a resource is in the condition or not. In the future, we could add other intermediate conditions, e.g. ConditionDegraded.

type ContainerResourceMetricSource added in v1.20.0 

type ContainerResourceMetricSource struct {
	// name is the name of the of the resource
	Name api.ResourceName
	// container is the name of the container in the pods of the scaling target.
	Container string
	// target specifies the target value for the given metric
	Target MetricTarget
}

ContainerResourceMetricSource indicates how to scale on a resource metric known to Kubernetes, as specified in the requests and limits, describing a single container in each of the pods of the current scale target(e.g. CPU or memory). The values will be averaged together before being compared to the target. Such metrics are built into Kubernetes, and have special scaling options on top of those available to normal per-pod metrics using the "pods" source. Only one "target" type should be set.

func (*ContainerResourceMetricSource) DeepCopy added in v1.20.0 

func (in *ContainerResourceMetricSource) DeepCopy() *ContainerResourceMetricSource

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ContainerResourceMetricSource.

func (*ContainerResourceMetricSource) DeepCopyInto added in v1.20.0 

func (in *ContainerResourceMetricSource) DeepCopyInto(out *ContainerResourceMetricSource)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type ContainerResourceMetricStatus added in v1.20.0 

type ContainerResourceMetricStatus struct {
	// name is the name of the resource in question.
	Name      api.ResourceName
	Container string
	Current   MetricValueStatus
}

ContainerResourceMetricStatus indicates the current value of a resource metric known to Kubernetes, as specified in requests and limits, describing each pod in the current scale target (e.g. CPU or memory). Such metrics are built in to Kubernetes, and have special scaling options on top of those available to normal per-pod metrics using the "pods" source.

func (*ContainerResourceMetricStatus) DeepCopy added in v1.20.0 

func (in *ContainerResourceMetricStatus) DeepCopy() *ContainerResourceMetricStatus

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ContainerResourceMetricStatus.

func (*ContainerResourceMetricStatus) DeepCopyInto added in v1.20.0 

func (in *ContainerResourceMetricStatus) DeepCopyInto(out *ContainerResourceMetricStatus)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type CrossVersionObjectReference added in v1.3.0 

type CrossVersionObjectReference struct {
	// kind is the kind of the referent; More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds"
	Kind string

	// name is the name of the referent; More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/names/#names
	Name string

	// apiVersion is the API version of the referent
	// +optional
	APIVersion string
}

CrossVersionObjectReference contains enough information to let you identify the referred resource.

func (*CrossVersionObjectReference) DeepCopy added in v1.8.0 

func (in *CrossVersionObjectReference) DeepCopy() *CrossVersionObjectReference

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new CrossVersionObjectReference.

func (*CrossVersionObjectReference) DeepCopyInto added in v1.8.0 

func (in *CrossVersionObjectReference) DeepCopyInto(out *CrossVersionObjectReference)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type ExternalMetricSource added in v1.10.0 

type ExternalMetricSource struct {
	// Metric identifies the target metric by name and selector
	Metric MetricIdentifier
	// Target specifies the target value for the given metric
	Target MetricTarget
}

ExternalMetricSource indicates how to scale on a metric not associated with any Kubernetes object (for example length of queue in cloud messaging service, or QPS from loadbalancer running outside of cluster).

func (*ExternalMetricSource) DeepCopy added in v1.10.0 

func (in *ExternalMetricSource) DeepCopy() *ExternalMetricSource

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ExternalMetricSource.

func (*ExternalMetricSource) DeepCopyInto added in v1.10.0 

func (in *ExternalMetricSource) DeepCopyInto(out *ExternalMetricSource)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type ExternalMetricStatus added in v1.10.0 

type ExternalMetricStatus struct {
	Metric  MetricIdentifier
	Current MetricValueStatus
}

ExternalMetricStatus indicates the current value of a global metric not associated with any Kubernetes object.

func (*ExternalMetricStatus) DeepCopy added in v1.10.0 

func (in *ExternalMetricStatus) DeepCopy() *ExternalMetricStatus

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ExternalMetricStatus.

func (*ExternalMetricStatus) DeepCopyInto added in v1.10.0 

func (in *ExternalMetricStatus) DeepCopyInto(out *ExternalMetricStatus)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type HPAScalingPolicy added in v1.18.0 

type HPAScalingPolicy struct {
	// Type is used to specify the scaling policy.
	Type HPAScalingPolicyType
	// Value contains the amount of change which is permitted by the policy.
	// It must be greater than zero
	Value int32
	// PeriodSeconds specifies the window of time for which the policy should hold true.
	// PeriodSeconds must be greater than zero and less than or equal to 1800 (30 min).
	PeriodSeconds int32
}

HPAScalingPolicy is a single policy which must hold true for a specified past interval.

func (*HPAScalingPolicy) DeepCopy added in v1.18.0 

func (in *HPAScalingPolicy) DeepCopy() *HPAScalingPolicy

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new HPAScalingPolicy.

func (*HPAScalingPolicy) DeepCopyInto added in v1.18.0 

func (in *HPAScalingPolicy) DeepCopyInto(out *HPAScalingPolicy)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type HPAScalingPolicyType added in v1.18.0 

type HPAScalingPolicyType string

HPAScalingPolicyType is the type of the policy which could be used while making scaling decisions. 

const (
	// PodsScalingPolicy is a policy used to specify a change in absolute number of pods.
	PodsScalingPolicy HPAScalingPolicyType = "Pods"
	// PercentScalingPolicy is a policy used to specify a relative amount of change with respect to
	// the current number of pods.
	PercentScalingPolicy HPAScalingPolicyType = "Percent"
)

type HPAScalingRules added in v1.18.0 

type HPAScalingRules struct {
	// StabilizationWindowSeconds is the number of seconds for which past recommendations should be
	// considered while scaling up or scaling down.
	// StabilizationWindowSeconds must be greater than or equal to zero and less than or equal to 3600 (one hour).
	// If not set, use the default values:
	// - For scale up: 0 (i.e. no stabilization is done).
	// - For scale down: 300 (i.e. the stabilization window is 300 seconds long).
	// +optional
	StabilizationWindowSeconds *int32
	// selectPolicy is used to specify which policy should be used.
	// If not set, the default value MaxPolicySelect is used.
	// +optional
	SelectPolicy *ScalingPolicySelect
	// policies is a list of potential scaling polices which can used during scaling.
	// At least one policy must be specified, otherwise the HPAScalingRules will be discarded as invalid
	// +optional
	Policies []HPAScalingPolicy
}

HPAScalingRules configures the scaling behavior for one direction. These Rules are applied after calculating DesiredReplicas from metrics for the HPA. They can limit the scaling velocity by specifying scaling policies. They can prevent flapping by specifying the stabilization window, so that the number of replicas is not set instantly, instead, the safest value from the stabilization window is chosen.

func (*HPAScalingRules) DeepCopy added in v1.18.0 

func (in *HPAScalingRules) DeepCopy() *HPAScalingRules

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new HPAScalingRules.

func (*HPAScalingRules) DeepCopyInto added in v1.18.0 

func (in *HPAScalingRules) DeepCopyInto(out *HPAScalingRules)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type HorizontalPodAutoscaler added in v1.3.0 

type HorizontalPodAutoscaler struct {
	metav1.TypeMeta
	// Metadata is the standard object metadata.
	// More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata
	// +optional
	metav1.ObjectMeta

	// spec is the specification for the behaviour of the autoscaler.
	// More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#spec-and-status.
	// +optional
	Spec HorizontalPodAutoscalerSpec

	// status is the current information about the autoscaler.
	// +optional
	Status HorizontalPodAutoscalerStatus
}

HorizontalPodAutoscaler is the configuration for a horizontal pod autoscaler, which automatically manages the replica count of any resource implementing the scale subresource based on the metrics specified.

func (*HorizontalPodAutoscaler) DeepCopy added in v1.8.0 

func (in *HorizontalPodAutoscaler) DeepCopy() *HorizontalPodAutoscaler

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new HorizontalPodAutoscaler.

func (*HorizontalPodAutoscaler) DeepCopyInto added in v1.8.0 

func (in *HorizontalPodAutoscaler) DeepCopyInto(out *HorizontalPodAutoscaler)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

func (*HorizontalPodAutoscaler) DeepCopyObject added in v1.8.0 

func (in *HorizontalPodAutoscaler) DeepCopyObject() runtime.Object

DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object.

type HorizontalPodAutoscalerBehavior added in v1.18.0 

type HorizontalPodAutoscalerBehavior struct {
	// scaleUp is scaling policy for scaling Up.
	// If not set, the default value is the higher of:
	//   * increase no more than 4 pods per 60 seconds
	//   * double the number of pods per 60 seconds
	// No stabilization is used.
	// +optional
	ScaleUp *HPAScalingRules
	// scaleDown is scaling policy for scaling Down.
	// If not set, the default value is to allow to scale down to minReplicas pods, with a
	// 300 second stabilization window (i.e., the highest recommendation for
	// the last 300sec is used).
	// +optional
	ScaleDown *HPAScalingRules
}

HorizontalPodAutoscalerBehavior configures a scaling behavior for Up and Down direction (scaleUp and scaleDown fields respectively).

func (*HorizontalPodAutoscalerBehavior) DeepCopy added in v1.18.0 

func (in *HorizontalPodAutoscalerBehavior) DeepCopy() *HorizontalPodAutoscalerBehavior

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new HorizontalPodAutoscalerBehavior.

func (*HorizontalPodAutoscalerBehavior) DeepCopyInto added in v1.18.0 

func (in *HorizontalPodAutoscalerBehavior) DeepCopyInto(out *HorizontalPodAutoscalerBehavior)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type HorizontalPodAutoscalerCondition added in v1.7.0 

type HorizontalPodAutoscalerCondition struct {
	// Type describes the current condition
	Type HorizontalPodAutoscalerConditionType
	// Status is the status of the condition (True, False, Unknown)
	Status ConditionStatus
	// LastTransitionTime is the last time the condition transitioned from
	// one status to another
	// +optional
	LastTransitionTime metav1.Time
	// Reason is the reason for the condition's last transition.
	// +optional
	Reason string
	// Message is a human-readable explanation containing details about
	// the transition
	// +optional
	Message string
}

HorizontalPodAutoscalerCondition describes the state of a HorizontalPodAutoscaler at a certain point.

func (*HorizontalPodAutoscalerCondition) DeepCopy added in v1.8.0 

func (in *HorizontalPodAutoscalerCondition) DeepCopy() *HorizontalPodAutoscalerCondition

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new HorizontalPodAutoscalerCondition.

func (*HorizontalPodAutoscalerCondition) DeepCopyInto added in v1.8.0 

func (in *HorizontalPodAutoscalerCondition) DeepCopyInto(out *HorizontalPodAutoscalerCondition)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type HorizontalPodAutoscalerConditionType added in v1.7.0 

type HorizontalPodAutoscalerConditionType string

HorizontalPodAutoscalerConditionType are the valid conditions of a HorizontalPodAutoscaler. 

const (
	// ScalingActive indicates that the HPA controller is able to scale if necessary:
	// it's correctly configured, can fetch the desired metrics, and isn't disabled.
	ScalingActive HorizontalPodAutoscalerConditionType = "ScalingActive"
	// AbleToScale indicates a lack of transient issues which prevent scaling from occurring,
	// such as being in a backoff window, or being unable to access/update the target scale.
	AbleToScale HorizontalPodAutoscalerConditionType = "AbleToScale"
	// ScalingLimited indicates that the calculated scale based on metrics would be above or
	// below the range for the HPA, and has thus been capped.
	ScalingLimited HorizontalPodAutoscalerConditionType = "ScalingLimited"
)

type HorizontalPodAutoscalerList added in v1.3.0 

type HorizontalPodAutoscalerList struct {
	metav1.TypeMeta
	// Metadata is the standard list metadata.
	// +optional
	metav1.ListMeta

	// items is the list of horizontal pod autoscaler objects.
	Items []HorizontalPodAutoscaler
}

HorizontalPodAutoscalerList is a list of horizontal pod autoscaler objects.

func (*HorizontalPodAutoscalerList) DeepCopy added in v1.8.0 

func (in *HorizontalPodAutoscalerList) DeepCopy() *HorizontalPodAutoscalerList

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new HorizontalPodAutoscalerList.

func (*HorizontalPodAutoscalerList) DeepCopyInto added in v1.8.0 

func (in *HorizontalPodAutoscalerList) DeepCopyInto(out *HorizontalPodAutoscalerList)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

func (*HorizontalPodAutoscalerList) DeepCopyObject added in v1.8.0 

func (in *HorizontalPodAutoscalerList) DeepCopyObject() runtime.Object

DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object.

type HorizontalPodAutoscalerSpec added in v1.3.0 

type HorizontalPodAutoscalerSpec struct {
	// scaleTargetRef points to the target resource to scale, and is used to the pods for which metrics
	// should be collected, as well as to actually change the replica count.
	ScaleTargetRef CrossVersionObjectReference

	// minReplicas is the lower limit for the number of replicas to which the autoscaler
	// can scale down.  It defaults to 1 pod.  minReplicas is allowed to be 0 if the
	// alpha feature gate HPAScaleToZero is enabled and at least one Object or External
	// metric is configured.  Scaling is active as long as at least one metric value is
	// available.
	// +optional
	MinReplicas *int32

	// maxReplicas is the upper limit for the number of replicas to which the autoscaler can scale up.
	// It cannot be less that minReplicas.
	MaxReplicas int32

	// metrics contains the specifications for which to use to calculate the
	// desired replica count (the maximum replica count across all metrics will
	// be used).  The desired replica count is calculated multiplying the
	// ratio between the target value and the current value by the current
	// number of pods.  Ergo, metrics used must decrease as the pod count is
	// increased, and vice-versa.  See the individual metric source types for
	// more information about how each type of metric must respond.
	// +optional
	Metrics []MetricSpec

	// behavior configures the scaling behavior of the target
	// in both Up and Down directions (scaleUp and scaleDown fields respectively).
	// If not set, the default HPAScalingRules for scale up and scale down are used.
	// +optional
	Behavior *HorizontalPodAutoscalerBehavior
}

HorizontalPodAutoscalerSpec describes the desired functionality of the HorizontalPodAutoscaler.

func (*HorizontalPodAutoscalerSpec) DeepCopy added in v1.8.0 

func (in *HorizontalPodAutoscalerSpec) DeepCopy() *HorizontalPodAutoscalerSpec

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new HorizontalPodAutoscalerSpec.

func (*HorizontalPodAutoscalerSpec) DeepCopyInto added in v1.8.0 

func (in *HorizontalPodAutoscalerSpec) DeepCopyInto(out *HorizontalPodAutoscalerSpec)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type HorizontalPodAutoscalerStatus added in v1.3.0 

type HorizontalPodAutoscalerStatus struct {
	// ObservedGeneration is the most recent generation observed by this autoscaler.
	// +optional
	ObservedGeneration *int64

	// LastScaleTime is the last time the HorizontalPodAutoscaler scaled the number of pods,
	// used by the autoscaler to control how often the number of pods is changed.
	// +optional
	LastScaleTime *metav1.Time

	// CurrentReplicas is current number of replicas of pods managed by this autoscaler,
	// as last seen by the autoscaler.
	CurrentReplicas int32

	// DesiredReplicas is the desired number of replicas of pods managed by this autoscaler,
	// as last calculated by the autoscaler.
	DesiredReplicas int32

	// CurrentMetrics is the last read state of the metrics used by this autoscaler.
	// +optional
	CurrentMetrics []MetricStatus

	// Conditions is the set of conditions required for this autoscaler to scale its target,
	// and indicates whether or not those conditions are met.
	Conditions []HorizontalPodAutoscalerCondition
}

HorizontalPodAutoscalerStatus describes the current status of a horizontal pod autoscaler.

func (*HorizontalPodAutoscalerStatus) DeepCopy added in v1.8.0 

func (in *HorizontalPodAutoscalerStatus) DeepCopy() *HorizontalPodAutoscalerStatus

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new HorizontalPodAutoscalerStatus.

func (*HorizontalPodAutoscalerStatus) DeepCopyInto added in v1.8.0 

func (in *HorizontalPodAutoscalerStatus) DeepCopyInto(out *HorizontalPodAutoscalerStatus)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type MetricIdentifier added in v1.12.0 

type MetricIdentifier struct {
	// Name is the name of the given metric
	Name string
	// Selector is the selector for the given metric
	// it is the string-encoded form of a standard kubernetes label selector
	// +optional
	Selector *metav1.LabelSelector
}

MetricIdentifier defines the name and optionally selector for a metric

func (*MetricIdentifier) DeepCopy added in v1.12.0 

func (in *MetricIdentifier) DeepCopy() *MetricIdentifier

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new MetricIdentifier.

func (*MetricIdentifier) DeepCopyInto added in v1.12.0 

func (in *MetricIdentifier) DeepCopyInto(out *MetricIdentifier)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type MetricSourceType added in v1.6.0 

type MetricSourceType string

MetricSourceType indicates the type of metric. 

const (
	// ObjectMetricSourceType is a metric describing a kubernetes object
	// (for example, hits-per-second on an Ingress object).
	ObjectMetricSourceType MetricSourceType = "Object"
	// PodsMetricSourceType is a metric describing each pod in the current scale
	// target (for example, transactions-processed-per-second).  The values
	// will be averaged together before being compared to the target value.
	PodsMetricSourceType MetricSourceType = "Pods"
	// ResourceMetricSourceType is a resource metric known to Kubernetes, as
	// specified in requests and limits, describing each pod in the current
	// scale target (e.g. CPU or memory).  Such metrics are built in to
	// Kubernetes, and have special scaling options on top of those available
	// to normal per-pod metrics (the "pods" source).
	ResourceMetricSourceType MetricSourceType = "Resource"
	// ExternalMetricSourceType is a global metric that is not associated
	// with any Kubernetes object. It allows autoscaling based on information
	// coming from components running outside of cluster
	// (for example length of queue in cloud messaging service, or
	// QPS from loadbalancer running outside of cluster).
	ExternalMetricSourceType MetricSourceType = "External"
	// ContainerResourceMetricSourceType is a resource metric known to Kubernetes, as
	// specified in requests and limits, describing a single container in each pod in the current
	// scale target (e.g. CPU or memory).  Such metrics are built in to
	// Kubernetes, and have special scaling options on top of those available
	// to normal per-pod metrics (the "pods" source).
	ContainerResourceMetricSourceType MetricSourceType = "ContainerResource"
)

type MetricSpec added in v1.6.0 

type MetricSpec struct {
	// Type is the type of metric source.  It should be one of "Object",
	// "Pods" or "Resource", each mapping to a matching field in the object.
	Type MetricSourceType

	// Object refers to a metric describing a single kubernetes object
	// (for example, hits-per-second on an Ingress object).
	// +optional
	Object *ObjectMetricSource
	// Pods refers to a metric describing each pod in the current scale target
	// (for example, transactions-processed-per-second).  The values will be
	// averaged together before being compared to the target value.
	// +optional
	Pods *PodsMetricSource
	// Resource refers to a resource metric (such as those specified in
	// requests and limits) known to Kubernetes describing each pod in the
	// current scale target (e.g. CPU or memory). Such metrics are built in to
	// Kubernetes, and have special scaling options on top of those available
	// to normal per-pod metrics using the "pods" source.
	// +optional
	Resource *ResourceMetricSource
	// ContainerResource refers to a resource metric (such as those specified in
	// requests and limits) known to Kubernetes describing a single container in each pod of the
	// current scale target (e.g. CPU or memory). Such metrics are built in to
	// Kubernetes, and have special scaling options on top of those available
	// to normal per-pod metrics using the "pods" source.
	// +optional
	ContainerResource *ContainerResourceMetricSource
	// External refers to a global metric that is not associated
	// with any Kubernetes object. It allows autoscaling based on information
	// coming from components running outside of cluster
	// (for example length of queue in cloud messaging service, or
	// QPS from loadbalancer running outside of cluster).
	// +optional
	External *ExternalMetricSource
}

MetricSpec specifies how to scale based on a single metric (only `type` and one other matching field should be set at once).

func (*MetricSpec) DeepCopy added in v1.8.0 

func (in *MetricSpec) DeepCopy() *MetricSpec

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new MetricSpec.

func (*MetricSpec) DeepCopyInto added in v1.8.0 

func (in *MetricSpec) DeepCopyInto(out *MetricSpec)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type MetricStatus added in v1.6.0 

type MetricStatus struct {
	// Type is the type of metric source.  It will be one of "Object",
	// "Pods" or "Resource", each corresponds to a matching field in the object.
	Type MetricSourceType

	// Object refers to a metric describing a single kubernetes object
	// (for example, hits-per-second on an Ingress object).
	// +optional
	Object *ObjectMetricStatus
	// Pods refers to a metric describing each pod in the current scale target
	// (for example, transactions-processed-per-second).  The values will be
	// averaged together before being compared to the target value.
	// +optional
	Pods *PodsMetricStatus
	// Resource refers to a resource metric (such as those specified in
	// requests and limits) known to Kubernetes describing each pod in the
	// current scale target (e.g. CPU or memory). Such metrics are built in to
	// Kubernetes, and have special scaling options on top of those available
	// to normal per-pod metrics using the "pods" source.
	// +optional
	Resource *ResourceMetricStatus
	// ContainerResource refers to a resource metric (such as those specified in
	// requests and limits) known to Kubernetes describing a single container in each pod in the
	// current scale target (e.g. CPU or memory). Such metrics are built in to
	// Kubernetes, and have special scaling options on top of those available
	// to normal per-pod metrics using the "pods" source.
	// +optional
	ContainerResource *ContainerResourceMetricStatus
	// External refers to a global metric that is not associated
	// with any Kubernetes object. It allows autoscaling based on information
	// coming from components running outside of cluster
	// (for example length of queue in cloud messaging service, or
	// QPS from loadbalancer running outside of cluster).
	// +optional
	External *ExternalMetricStatus
}

MetricStatus describes the last-read state of a single metric.

func (*MetricStatus) DeepCopy added in v1.8.0 

func (in *MetricStatus) DeepCopy() *MetricStatus

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new MetricStatus.

func (*MetricStatus) DeepCopyInto added in v1.8.0 

func (in *MetricStatus) DeepCopyInto(out *MetricStatus)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type MetricTarget added in v1.12.0 

type MetricTarget struct {
	// Type represents whether the metric type is Utilization, Value, or AverageValue
	Type MetricTargetType
	// Value is the target value of the metric (as a quantity).
	Value *resource.Quantity
	// TargetAverageValue is the target value of the average of the
	// metric across all relevant pods (as a quantity)
	AverageValue *resource.Quantity

	// AverageUtilization is the target value of the average of the
	// resource metric across all relevant pods, represented as a percentage of
	// the requested value of the resource for the pods.
	// Currently only valid for Resource metric source type
	AverageUtilization *int32
}

MetricTarget defines the target value, average value, or average utilization of a specific metric

func (*MetricTarget) DeepCopy added in v1.12.0 

func (in *MetricTarget) DeepCopy() *MetricTarget

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new MetricTarget.

func (*MetricTarget) DeepCopyInto added in v1.12.0 

func (in *MetricTarget) DeepCopyInto(out *MetricTarget)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type MetricTargetType added in v1.12.0 

type MetricTargetType string

MetricTargetType specifies the type of metric being targeted, and should be either "Value", "AverageValue", or "Utilization" 

const (
	// UtilizationMetricType is a possible value for MetricTarget.Type.
	UtilizationMetricType MetricTargetType = "Utilization"
	// ValueMetricType is a possible value for MetricTarget.Type.
	ValueMetricType MetricTargetType = "Value"
	// AverageValueMetricType is a possible value for MetricTarget.Type.
	AverageValueMetricType MetricTargetType = "AverageValue"
)

type MetricValueStatus added in v1.12.0 

type MetricValueStatus struct {
	Value              *resource.Quantity
	AverageValue       *resource.Quantity
	AverageUtilization *int32
}

MetricValueStatus indicates the current value of a metric.

func (*MetricValueStatus) DeepCopy added in v1.12.0 

func (in *MetricValueStatus) DeepCopy() *MetricValueStatus

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new MetricValueStatus.

func (*MetricValueStatus) DeepCopyInto added in v1.12.0 

func (in *MetricValueStatus) DeepCopyInto(out *MetricValueStatus)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type ObjectMetricSource added in v1.6.0 

type ObjectMetricSource struct {
	DescribedObject CrossVersionObjectReference
	Target          MetricTarget
	Metric          MetricIdentifier
}

ObjectMetricSource indicates how to scale on a metric describing a kubernetes object (for example, hits-per-second on an Ingress object).

func (*ObjectMetricSource) DeepCopy added in v1.8.0 

func (in *ObjectMetricSource) DeepCopy() *ObjectMetricSource

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ObjectMetricSource.

func (*ObjectMetricSource) DeepCopyInto added in v1.8.0 

func (in *ObjectMetricSource) DeepCopyInto(out *ObjectMetricSource)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type ObjectMetricStatus added in v1.6.0 

type ObjectMetricStatus struct {
	Metric  MetricIdentifier
	Current MetricValueStatus

	DescribedObject CrossVersionObjectReference
}

ObjectMetricStatus indicates the current value of a metric describing a kubernetes object (for example, hits-per-second on an Ingress object).

func (*ObjectMetricStatus) DeepCopy added in v1.8.0 

func (in *ObjectMetricStatus) DeepCopy() *ObjectMetricStatus

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ObjectMetricStatus.

func (*ObjectMetricStatus) DeepCopyInto added in v1.8.0 

func (in *ObjectMetricStatus) DeepCopyInto(out *ObjectMetricStatus)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type PodsMetricSource added in v1.6.0 

type PodsMetricSource struct {
	// metric identifies the target metric by name and selector
	Metric MetricIdentifier
	// target specifies the target value for the given metric
	Target MetricTarget
}

PodsMetricSource indicates how to scale on a metric describing each pod in the current scale target (for example, transactions-processed-per-second). The values will be averaged together before being compared to the target value.

func (*PodsMetricSource) DeepCopy added in v1.8.0 

func (in *PodsMetricSource) DeepCopy() *PodsMetricSource

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new PodsMetricSource.

func (*PodsMetricSource) DeepCopyInto added in v1.8.0 

func (in *PodsMetricSource) DeepCopyInto(out *PodsMetricSource)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type PodsMetricStatus added in v1.6.0 

type PodsMetricStatus struct {
	Metric  MetricIdentifier
	Current MetricValueStatus
}

PodsMetricStatus indicates the current value of a metric describing each pod in the current scale target (for example, transactions-processed-per-second).

func (*PodsMetricStatus) DeepCopy added in v1.8.0 

func (in *PodsMetricStatus) DeepCopy() *PodsMetricStatus

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new PodsMetricStatus.

func (*PodsMetricStatus) DeepCopyInto added in v1.8.0 

func (in *PodsMetricStatus) DeepCopyInto(out *PodsMetricStatus)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type ResourceMetricSource added in v1.6.0 

type ResourceMetricSource struct {
	// Name is the name of the resource in question.
	Name api.ResourceName
	// Target specifies the target value for the given metric
	Target MetricTarget
}

ResourceMetricSource indicates how to scale on a resource metric known to Kubernetes, as specified in requests and limits, describing each pod in the current scale target (e.g. CPU or memory). The values will be averaged together before being compared to the target. Such metrics are built in to Kubernetes, and have special scaling options on top of those available to normal per-pod metrics using the "pods" source. Only one "target" type should be set.

func (*ResourceMetricSource) DeepCopy added in v1.8.0 

func (in *ResourceMetricSource) DeepCopy() *ResourceMetricSource

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ResourceMetricSource.

func (*ResourceMetricSource) DeepCopyInto added in v1.8.0 

func (in *ResourceMetricSource) DeepCopyInto(out *ResourceMetricSource)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type ResourceMetricStatus added in v1.6.0 

type ResourceMetricStatus struct {
	// name is the name of the resource in question.
	Name    api.ResourceName
	Current MetricValueStatus
}

ResourceMetricStatus indicates the current value of a resource metric known to Kubernetes, as specified in requests and limits, describing each pod in the current scale target (e.g. CPU or memory). Such metrics are built in to Kubernetes, and have special scaling options on top of those available to normal per-pod metrics using the "pods" source.

func (*ResourceMetricStatus) DeepCopy added in v1.8.0 

func (in *ResourceMetricStatus) DeepCopy() *ResourceMetricStatus

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ResourceMetricStatus.

func (*ResourceMetricStatus) DeepCopyInto added in v1.8.0 

func (in *ResourceMetricStatus) DeepCopyInto(out *ResourceMetricStatus)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type Scale 

type Scale struct {
	metav1.TypeMeta
	// Standard object metadata; More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata.
	// +optional
	metav1.ObjectMeta

	// spec defines the behavior of the scale. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#spec-and-status.
	// +optional
	Spec ScaleSpec

	// status represents the current status of the scale. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#spec-and-status. Read-only.
	// +optional
	Status ScaleStatus
}

Scale represents a scaling request for a resource.

func (*Scale) DeepCopy added in v1.8.0 

func (in *Scale) DeepCopy() *Scale

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new Scale.

func (*Scale) DeepCopyInto added in v1.8.0 

func (in *Scale) DeepCopyInto(out *Scale)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

func (*Scale) DeepCopyObject added in v1.8.0 

func (in *Scale) DeepCopyObject() runtime.Object

DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object.

type ScaleSpec 

type ScaleSpec struct {
	// replicas is the desired number of instances for the scaled object.
	// +optional
	Replicas int32
}

ScaleSpec describes the attributes of a scale subresource.

func (*ScaleSpec) DeepCopy added in v1.8.0 

func (in *ScaleSpec) DeepCopy() *ScaleSpec

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ScaleSpec.

func (*ScaleSpec) DeepCopyInto added in v1.8.0 

func (in *ScaleSpec) DeepCopyInto(out *ScaleSpec)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type ScaleStatus 

type ScaleStatus struct {
	// replicas is the actual number of observed instances of the scaled object.
	Replicas int32

	// label query over pods that should match the replicas count. This is same
	// as the label selector but in the string format to avoid introspection
	// by clients. The string will be in the same format as the query-param syntax.
	// More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/#label-selectors
	// +optional
	Selector string
}

ScaleStatus represents the current status of a scale subresource.

func (*ScaleStatus) DeepCopy added in v1.8.0 

func (in *ScaleStatus) DeepCopy() *ScaleStatus

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ScaleStatus.

func (*ScaleStatus) DeepCopyInto added in v1.8.0 

func (in *ScaleStatus) DeepCopyInto(out *ScaleStatus)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type ScalingPolicySelect added in v1.18.0 

type ScalingPolicySelect string

ScalingPolicySelect is used to specify which policy should be used while scaling in a certain direction 

const (
	// MaxPolicySelect selects the policy with the highest possible change.
	MaxPolicySelect ScalingPolicySelect = "Max"
	// MinPolicySelect selects the policy with the lowest possible change.
	MinPolicySelect ScalingPolicySelect = "Min"
	// DisabledPolicySelect disables the scaling in this direction.
	DisabledPolicySelect ScalingPolicySelect = "Disabled"
)

Source Files

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Directories

Path Synopsis
Package install installs the experimental API group, making it available as an option to all of the API encoding/decoding machinery.
 Package install installs the experimental API group, making it available as an option to all of the API encoding/decoding machinery.

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