podautoscaler

package
v1.7.12 Latest Latest
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Published: Dec 28, 2017 License: Apache-2.0 Imports: 32 Imported by: 0

Documentation

Overview

Package podautoscaler contains logic for autoscaling number of pods based on metrics observed.

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func NewDefaultHPARateLimiter added in v1.6.0

func NewDefaultHPARateLimiter(interval time.Duration) workqueue.RateLimiter

NewDefaultHPARateLimitter creates a rate limitter which limits overall (as per the default controller rate limiter), as well as per the resync interval

func NewFixedItemIntervalRateLimiter added in v1.6.0

func NewFixedItemIntervalRateLimiter(interval time.Duration) workqueue.RateLimiter

func UnsafeConvertToVersionVia added in v1.6.0

func UnsafeConvertToVersionVia(obj runtime.Object, externalVersion schema.GroupVersion) (runtime.Object, error)

UnsafeConvertToVersionVia is like api.Scheme.UnsafeConvertToVersion, but it does so via an internal version first. We use it since working with v2alpha1 is convenient here, but we want to use the v1 client (and can't just use the internal version). Note that conversion mutates the object, so you need to deepcopy *before* you call this if the input object came out of a shared cache.

Types

type FixedItemIntervalRateLimiter added in v1.6.0

type FixedItemIntervalRateLimiter struct {
	// contains filtered or unexported fields
}

FixedItemIntervalRateLimiter limits items to a fixed-rate interval

func (*FixedItemIntervalRateLimiter) Forget added in v1.6.0

func (r *FixedItemIntervalRateLimiter) Forget(item interface{})

func (*FixedItemIntervalRateLimiter) NumRequeues added in v1.6.0

func (r *FixedItemIntervalRateLimiter) NumRequeues(item interface{}) int

func (*FixedItemIntervalRateLimiter) When added in v1.6.0

func (r *FixedItemIntervalRateLimiter) When(item interface{}) time.Duration

type HorizontalController

type HorizontalController struct {
	// contains filtered or unexported fields
}

func NewHorizontalController

func NewHorizontalController(
	evtNamespacer v1core.EventsGetter,
	scaleNamespacer extensionsclient.ScalesGetter,
	hpaNamespacer autoscalingclient.HorizontalPodAutoscalersGetter,
	replicaCalc *ReplicaCalculator,
	hpaInformer autoscalinginformers.HorizontalPodAutoscalerInformer,
	resyncPeriod time.Duration,
	upscaleForbiddenWindow time.Duration,
	downscaleForbiddenWindow time.Duration,

) *HorizontalController

func (*HorizontalController) Run

func (a *HorizontalController) Run(stopCh <-chan struct{})

type ReplicaCalculator added in v1.5.0

type ReplicaCalculator struct {
	// contains filtered or unexported fields
}

func NewReplicaCalculator added in v1.5.0

func NewReplicaCalculator(metricsClient metricsclient.MetricsClient, podsGetter v1coreclient.PodsGetter) *ReplicaCalculator

func (*ReplicaCalculator) GetMetricReplicas added in v1.5.0

func (c *ReplicaCalculator) GetMetricReplicas(currentReplicas int32, targetUtilization int64, metricName string, namespace string, selector labels.Selector) (replicaCount int32, utilization int64, timestamp time.Time, err error)

GetMetricReplicas calculates the desired replica count based on a target metric utilization (as a milli-value) for pods matching the given selector in the given namespace, and the current replica count

func (*ReplicaCalculator) GetObjectMetricReplicas added in v1.6.0

func (c *ReplicaCalculator) GetObjectMetricReplicas(currentReplicas int32, targetUtilization int64, metricName string, namespace string, objectRef *autoscaling.CrossVersionObjectReference) (replicaCount int32, utilization int64, timestamp time.Time, err error)

GetObjectMetricReplicas calculates the desired replica count based on a target metric utilization (as a milli-value) for the given object in the given namespace, and the current replica count.

func (*ReplicaCalculator) GetRawResourceReplicas added in v1.6.0

func (c *ReplicaCalculator) GetRawResourceReplicas(currentReplicas int32, targetUtilization int64, resource v1.ResourceName, namespace string, selector labels.Selector) (replicaCount int32, utilization int64, timestamp time.Time, err error)

GetRawResourceReplicas calculates the desired replica count based on a target resource utilization (as a raw milli-value) for pods matching the given selector in the given namespace, and the current replica count

func (*ReplicaCalculator) GetResourceReplicas added in v1.5.0

func (c *ReplicaCalculator) GetResourceReplicas(currentReplicas int32, targetUtilization int32, resource v1.ResourceName, namespace string, selector labels.Selector) (replicaCount int32, utilization int32, rawUtilization int64, timestamp time.Time, err error)

GetResourceReplicas calculates the desired replica count based on a target resource utilization percentage of the given resource for pods matching the given selector in the given namespace, and the current replica count

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