plugin

Documentation

Overview

Package plugin is the package that defines the eviction strategy, and those strategies must implement EvictPlugin interface, supporting both embedded plugin and external registered plugin.

Index

• Constants
• type DummyEvictionPlugin
  • func (_ DummyEvictionPlugin) GetEvictPods(_ context.Context, _ *pluginapi.GetEvictPodsRequest) (*pluginapi.GetEvictPodsResponse, error)
  • func (_ DummyEvictionPlugin) GetTopEvictionPods(_ context.Context, _ *pluginapi.GetTopEvictionPodsRequest) (*pluginapi.GetTopEvictionPodsResponse, error)
  • func (_ DummyEvictionPlugin) Name() string
  • func (_ DummyEvictionPlugin) Start()
  • func (_ DummyEvictionPlugin) ThresholdMet(_ context.Context) (*pluginapi.ThresholdMetResponse, error)
• type EvictionPlugin
  • func NewReclaimedResourcesEvictionPlugin(_ *client.GenericClientSet, _ events.EventRecorder, ...) EvictionPlugin
• type GracePeriodGetter
• type InitFunc
• type ResourcesEvictionPlugin
  • func NewResourcesEvictionPlugin(pluginName string, metaServer *metaserver.MetaServer, ...) *ResourcesEvictionPlugin
  • func (b *ResourcesEvictionPlugin) GetEvictPods(_ context.Context, request *pluginapi.GetEvictPodsRequest) (*pluginapi.GetEvictPodsResponse, error)
  • func (b *ResourcesEvictionPlugin) GetTopEvictionPods(_ context.Context, request *pluginapi.GetTopEvictionPodsRequest) (*pluginapi.GetTopEvictionPodsResponse, error)
  • func (b *ResourcesEvictionPlugin) Name() string
  • func (b *ResourcesEvictionPlugin) Start()
  • func (b *ResourcesEvictionPlugin) ThresholdMet(ctx context.Context) (*pluginapi.ThresholdMetResponse, error)
• type ResourcesGetter
• type ThresholdGetter

Constants

const (
	MetricsNamePodCount         = "pod_count"
	MetricsNamePodResource      = "pod_resource"
	MetricsNameGetResourceEmpty = "get_resource_empty"
)

const ReclaimedResourcesEvictionPluginName = "reclaimed-resource-pressure-eviction-plugin"

Types

type DummyEvictionPlugin

type DummyEvictionPlugin struct {
	*util.StopControl
}

func (DummyEvictionPlugin) GetEvictPods

func (_ DummyEvictionPlugin) GetEvictPods(_ context.Context, _ *pluginapi.GetEvictPodsRequest) (*pluginapi.GetEvictPodsResponse, error)

func (DummyEvictionPlugin) GetTopEvictionPods

func (_ DummyEvictionPlugin) GetTopEvictionPods(_ context.Context, _ *pluginapi.GetTopEvictionPodsRequest) (*pluginapi.GetTopEvictionPodsResponse, error)

func (DummyEvictionPlugin) Name

func (_ DummyEvictionPlugin) Name() string

func (DummyEvictionPlugin) Start

func (_ DummyEvictionPlugin) Start()

func (DummyEvictionPlugin) ThresholdMet

func (_ DummyEvictionPlugin) ThresholdMet(_ context.Context) (*pluginapi.ThresholdMetResponse, error)

type EvictionPlugin

type EvictionPlugin interface {
	Name() string
	endpointpkg.Endpoint
}

EvictionPlugin performs eviction actions based on agent resources.

func NewReclaimedResourcesEvictionPlugin

func NewReclaimedResourcesEvictionPlugin(_ *client.GenericClientSet, _ events.EventRecorder,
	metaServer *metaserver.MetaServer, emitter metrics.MetricEmitter, conf *config.Configuration) EvictionPlugin

type GracePeriodGetter

type GracePeriodGetter func() int64

type InitFunc

type InitFunc func(genericClient *client.GenericClientSet, recorder events.EventRecorder, metaServer *metaserver.MetaServer,
	emitter metrics.MetricEmitter, conf *config.Configuration) EvictionPlugin

InitFunc is used to initialize a particular innter eviction plugin.

type ResourcesEvictionPlugin

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

ResourcesEvictionPlugin implements EvictPlugin interface it trigger pod eviction logic based on the tolerance of resources.

func NewResourcesEvictionPlugin

func NewResourcesEvictionPlugin(pluginName string, metaServer *metaserver.MetaServer,
	emitter metrics.MetricEmitter, resourcesGetter ResourcesGetter, thresholdGetter ThresholdGetter,
	gracePeriodGetter GracePeriodGetter, skipZeroQuantityResourceNames sets.String,
	podFilter func(pod *v1.Pod) (bool, error)) *ResourcesEvictionPlugin

func (*ResourcesEvictionPlugin) GetEvictPods

func (b *ResourcesEvictionPlugin) GetEvictPods(_ context.Context, request *pluginapi.GetEvictPodsRequest) (*pluginapi.GetEvictPodsResponse, error)

func (*ResourcesEvictionPlugin) GetTopEvictionPods

func (b *ResourcesEvictionPlugin) GetTopEvictionPods(_ context.Context, request *pluginapi.GetTopEvictionPodsRequest) (*pluginapi.GetTopEvictionPodsResponse, error)

func (*ResourcesEvictionPlugin) Name

func (b *ResourcesEvictionPlugin) Name() string

func (*ResourcesEvictionPlugin) Start

func (b *ResourcesEvictionPlugin) Start()

func (*ResourcesEvictionPlugin) ThresholdMet

func (b *ResourcesEvictionPlugin) ThresholdMet(ctx context.Context) (*pluginapi.ThresholdMetResponse, error)

ThresholdMet evict pods when the beset effort resources usage is greater than the supply (after considering toleration).

type ResourcesGetter

type ResourcesGetter func(ctx context.Context) (v1.ResourceList, error)

type ThresholdGetter

type ThresholdGetter func(resourceName v1.ResourceName) float64