podautoscaler

package
Version: v1.14.9 Latest Latest
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Published: Nov 9, 2019 License: Apache-2.0 Imports: 33 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

NewDefaultHPARateLimiter creates a rate limiter 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

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
}

HorizontalController is responsible for the synchronizing HPA objects stored in the system with the actual deployments/replication controllers they control.

func NewHorizontalController

func NewHorizontalController(
	evtNamespacer v1core.EventsGetter,
	scaleNamespacer scaleclient.ScalesGetter,
	hpaNamespacer autoscalingclient.HorizontalPodAutoscalersGetter,
	mapper apimeta.RESTMapper,
	metricsClient metricsclient.MetricsClient,
	hpaInformer autoscalinginformers.HorizontalPodAutoscalerInformer,
	podInformer coreinformers.PodInformer,
	resyncPeriod time.Duration,
	downscaleStabilisationWindow time.Duration,
	tolerance float64,
	cpuInitializationPeriod,
	delayOfInitialReadinessStatus time.Duration,

) *HorizontalController

NewHorizontalController creates a new HorizontalController.

func (*HorizontalController) Run

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

Run begins watching and syncing.

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, podLister corelisters.PodLister, tolerance float64, cpuInitializationPeriod, delayOfInitialReadinessStatus time.Duration) *ReplicaCalculator

func (*ReplicaCalculator) GetExternalMetricReplicas added in v1.10.0

func (c *ReplicaCalculator) GetExternalMetricReplicas(currentReplicas int32, targetUtilization int64, metricName, namespace string, metricSelector *metav1.LabelSelector, podSelector labels.Selector) (replicaCount int32, utilization int64, timestamp time.Time, err error)

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

func (*ReplicaCalculator) GetExternalPerPodMetricReplicas added in v1.10.0

func (c *ReplicaCalculator) GetExternalPerPodMetricReplicas(statusReplicas int32, targetUtilizationPerPod int64, metricName, namespace string, metricSelector *metav1.LabelSelector) (replicaCount int32, utilization int64, timestamp time.Time, err error)

GetExternalPerPodMetricReplicas calculates the desired replica count based on a target metric value per pod (as a milli-value) for the external metric in the given namespace, and the current replica count.

func (*ReplicaCalculator) GetMetricReplicas added in v1.5.0

func (c *ReplicaCalculator) GetMetricReplicas(currentReplicas int32, targetUtilization int64, metricName string, namespace string, selector labels.Selector, metricSelector 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, selector labels.Selector, metricSelector labels.Selector) (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) GetObjectPerPodMetricReplicas added in v1.14.0

func (c *ReplicaCalculator) GetObjectPerPodMetricReplicas(currentReplicas int32, targetAverageUtilization int64, metricName string, namespace string, objectRef *autoscaling.CrossVersionObjectReference, metricSelector labels.Selector) (replicaCount int32, utilization int64, timestamp time.Time, err error)

GetObjectPerPodMetricReplicas 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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