package scheduler

import "k8s.io/kubernetes/pkg/scheduler"

Index ¶

• Constants
• func AddAllEventHandlers( sched *Scheduler, schedulerName string, informerFactory informers.SharedInformerFactory, podInformer coreinformers.PodInformer, )
• func GetPodDisruptionBudgetLister(informerFactory informers.SharedInformerFactory) policylisters.PodDisruptionBudgetLister
• func MakeDefaultErrorFunc(client clientset.Interface, podQueue internalqueue.SchedulingQueue, schedulerCache internalcache.Cache) func(*framework.PodInfo, error)
• func NewPodInformer(client clientset.Interface, resyncPeriod time.Duration) coreinformers.PodInformer
• type Binder
• type Configurator
• type Option
• func WithAlgorithmSource(source schedulerapi.SchedulerAlgorithmSource) Option
• func WithBindTimeoutSeconds(bindTimeoutSeconds int64) Option
• func WithFrameworkOutOfTreeRegistry(registry framework.Registry) Option
• func WithFrameworkPluginConfig(pluginConfig []schedulerapi.PluginConfig) Option
• func WithFrameworkPlugins(plugins *schedulerapi.Plugins) Option
• func WithName(schedulerName string) Option
• func WithPercentageOfNodesToScore(percentageOfNodesToScore int32) Option
• func WithPodInitialBackoffSeconds(podInitialBackoffSeconds int64) Option
• func WithPodMaxBackoffSeconds(podMaxBackoffSeconds int64) Option
• func WithPreemptionDisabled(disablePreemption bool) Option
• type Scheduler
• func New(client clientset.Interface, informerFactory informers.SharedInformerFactory, podInformer coreinformers.PodInformer, recorder events.EventRecorder, stopCh <-chan struct{}, opts ...Option) (*Scheduler, error)
• func (sched *Scheduler) Cache() internalcache.Cache
• func (sched *Scheduler) Run(ctx context.Context)

Constants ¶

const (
	// BindTimeoutSeconds defines the default bind timeout
	BindTimeoutSeconds = 100
	// SchedulerError is the reason recorded for events when an error occurs during scheduling a pod.
	SchedulerError = "SchedulerError"
)

Functions ¶

func AddAllEventHandlers ¶

func AddAllEventHandlers(
	sched *Scheduler,
	schedulerName string,
	informerFactory informers.SharedInformerFactory,
	podInformer coreinformers.PodInformer,
)

AddAllEventHandlers is a helper function used in tests and in Scheduler to add event handlers for various informers.

func GetPodDisruptionBudgetLister ¶

func GetPodDisruptionBudgetLister(informerFactory informers.SharedInformerFactory) policylisters.PodDisruptionBudgetLister

GetPodDisruptionBudgetLister returns pdb lister from the given informer factory. Returns nil if PodDisruptionBudget feature is disabled.

func MakeDefaultErrorFunc ¶

func MakeDefaultErrorFunc(client clientset.Interface, podQueue internalqueue.SchedulingQueue, schedulerCache internalcache.Cache) func(*framework.PodInfo, error)

MakeDefaultErrorFunc construct a function to handle pod scheduler error

func NewPodInformer ¶

func NewPodInformer(client clientset.Interface, resyncPeriod time.Duration) coreinformers.PodInformer

NewPodInformer creates a shared index informer that returns only non-terminal pods.

Types ¶

type Binder ¶

type Binder interface {
	Bind(binding *v1.Binding) error
}

Binder knows how to write a binding.

type Configurator ¶

type Configurator struct {

	// Close this to stop all reflectors
	StopEverything <-chan struct{}
	// contains filtered or unexported fields
}

Configurator defines I/O, caching, and other functionality needed to construct a new scheduler.

type Option ¶

type Option func(*schedulerOptions)

Option configures a Scheduler

func WithAlgorithmSource ¶

func WithAlgorithmSource(source schedulerapi.SchedulerAlgorithmSource) Option

WithAlgorithmSource sets schedulerAlgorithmSource for Scheduler, the default is a source with DefaultProvider.

func WithBindTimeoutSeconds ¶

func WithBindTimeoutSeconds(bindTimeoutSeconds int64) Option

WithBindTimeoutSeconds sets bindTimeoutSeconds for Scheduler, the default value is 100

func WithFrameworkOutOfTreeRegistry ¶

func WithFrameworkOutOfTreeRegistry(registry framework.Registry) Option

WithFrameworkOutOfTreeRegistry sets the registry for out-of-tree plugins. Those plugins will be appended to the default registry.

func WithFrameworkPluginConfig ¶

func WithFrameworkPluginConfig(pluginConfig []schedulerapi.PluginConfig) Option

WithFrameworkPluginConfig sets the PluginConfig slice that the framework should be configured with.

func WithFrameworkPlugins ¶

func WithFrameworkPlugins(plugins *schedulerapi.Plugins) Option

WithFrameworkPlugins sets the plugins that the framework should be configured with.

func WithName ¶

func WithName(schedulerName string) Option

WithName sets schedulerName for Scheduler, the default schedulerName is default-scheduler

func WithPercentageOfNodesToScore ¶

func WithPercentageOfNodesToScore(percentageOfNodesToScore int32) Option

WithPercentageOfNodesToScore sets percentageOfNodesToScore for Scheduler, the default value is 50

func WithPodInitialBackoffSeconds ¶

func WithPodInitialBackoffSeconds(podInitialBackoffSeconds int64) Option

WithPodInitialBackoffSeconds sets podInitialBackoffSeconds for Scheduler, the default value is 1

func WithPodMaxBackoffSeconds ¶

func WithPodMaxBackoffSeconds(podMaxBackoffSeconds int64) Option

WithPodMaxBackoffSeconds sets podMaxBackoffSeconds for Scheduler, the default value is 10

func WithPreemptionDisabled ¶

func WithPreemptionDisabled(disablePreemption bool) Option

WithPreemptionDisabled sets disablePreemption for Scheduler, the default value is false

type Scheduler ¶

type Scheduler struct {
	// It is expected that changes made via SchedulerCache will be observed
	// by NodeLister and Algorithm.
	SchedulerCache internalcache.Cache

	Algorithm core.ScheduleAlgorithm

	// Framework runs scheduler plugins at configured extension points.
	Framework framework.Framework

	// NextPod should be a function that blocks until the next pod
	// is available. We don't use a channel for this, because scheduling
	// a pod may take some amount of time and we don't want pods to get
	// stale while they sit in a channel.
	NextPod func() *framework.PodInfo

	// Error is called if there is an error. It is passed the pod in
	// question, and the error
	Error func(*framework.PodInfo, error)

	// Recorder is the EventRecorder to use
	Recorder events.EventRecorder

	// Close this to shut down the scheduler.
	StopEverything <-chan struct{}

	// VolumeBinder handles PVC/PV binding for the pod.
	VolumeBinder *volumebinder.VolumeBinder

	// Disable pod preemption or not.
	DisablePreemption bool

	// SchedulingQueue holds pods to be scheduled
	SchedulingQueue internalqueue.SchedulingQueue
	// contains filtered or unexported fields
}

Scheduler watches for new unscheduled pods. It attempts to find nodes that they fit on and writes bindings back to the api server.

func New ¶

func New(client clientset.Interface,
	informerFactory informers.SharedInformerFactory,
	podInformer coreinformers.PodInformer,
	recorder events.EventRecorder,
	stopCh <-chan struct{},
	opts ...Option) (*Scheduler, error)

New returns a Scheduler

func (*Scheduler) Cache ¶

func (sched *Scheduler) Cache() internalcache.Cache

Cache returns the cache in scheduler for test to check the data in scheduler.

func (*Scheduler) Run ¶

func (sched *Scheduler) Run(ctx context.Context)

Run begins watching and scheduling. It waits for cache to be synced, then starts scheduling and blocked until the context is done.

Source Files ¶

eventhandlers.go factory.go scheduler.go

Directories ¶