plugins

Documentation

Index

• Constants
• func NewInTreeRegistry() runtime.Registry
• func PredicateOrdering() []string
• type ConfigProducer
• type ConfigProducerArgs
• type LegacyRegistry
  • func NewLegacyRegistry() *LegacyRegistry
  • func (lr *LegacyRegistry) ProcessPredicatePolicy(policy config.PredicatePolicy, pluginArgs *ConfigProducerArgs) string
  • func (lr *LegacyRegistry) ProcessPriorityPolicy(policy config.PriorityPolicy, configProducerArgs *ConfigProducerArgs) string

Constants

const (
	// EqualPriority defines the name of prioritizer function that gives an equal weight of one to all nodes.
	EqualPriority = "EqualPriority"
	// MostRequestedPriority defines the name of prioritizer function that gives used nodes higher priority.
	MostRequestedPriority = "MostRequestedPriority"
	// RequestedToCapacityRatioPriority defines the name of RequestedToCapacityRatioPriority.
	RequestedToCapacityRatioPriority = "RequestedToCapacityRatioPriority"
	// SelectorSpreadPriority defines the name of prioritizer function that spreads pods by minimizing
	// the number of pods (belonging to the same service or replication controller) on the same node.
	SelectorSpreadPriority = "SelectorSpreadPriority"
	// ServiceSpreadingPriority is largely replaced by "SelectorSpreadPriority".
	ServiceSpreadingPriority = "ServiceSpreadingPriority"
	// InterPodAffinityPriority defines the name of prioritizer function that decides which pods should or
	// should not be placed in the same topological domain as some other pods.
	InterPodAffinityPriority = "InterPodAffinityPriority"
	// LeastRequestedPriority defines the name of prioritizer function that prioritize nodes by least
	// requested utilization.
	LeastRequestedPriority = "LeastRequestedPriority"
	// BalancedResourceAllocation defines the name of prioritizer function that prioritizes nodes
	// to help achieve balanced resource usage.
	BalancedResourceAllocation = "BalancedResourceAllocation"
	// NodePreferAvoidPodsPriority defines the name of prioritizer function that priorities nodes according to
	// the node annotation "scheduler.alpha.kubernetes.io/preferAvoidPods".
	NodePreferAvoidPodsPriority = "NodePreferAvoidPodsPriority"
	// NodeAffinityPriority defines the name of prioritizer function that prioritizes nodes which have labels
	// matching NodeAffinity.
	NodeAffinityPriority = "NodeAffinityPriority"
	// TaintTolerationPriority defines the name of prioritizer function that prioritizes nodes that marked
	// with taint which pod can tolerate.
	TaintTolerationPriority = "TaintTolerationPriority"
	// ImageLocalityPriority defines the name of prioritizer function that prioritizes nodes that have images
	// requested by the pod present.
	ImageLocalityPriority = "ImageLocalityPriority"
	// EvenPodsSpreadPriority defines the name of prioritizer function that prioritizes nodes
	// which have pods and labels matching the incoming pod's topologySpreadConstraints.
	EvenPodsSpreadPriority = "EvenPodsSpreadPriority"
)

const (
	// MatchInterPodAffinityPred defines the name of predicate MatchInterPodAffinity.
	MatchInterPodAffinityPred = "MatchInterPodAffinity"
	// CheckVolumeBindingPred defines the name of predicate CheckVolumeBinding.
	CheckVolumeBindingPred = "CheckVolumeBinding"
	// GeneralPred defines the name of predicate GeneralPredicates.
	GeneralPred = "GeneralPredicates"
	// HostNamePred defines the name of predicate HostName.
	HostNamePred = "HostName"
	// PodFitsHostPortsPred defines the name of predicate PodFitsHostPorts.
	PodFitsHostPortsPred = "PodFitsHostPorts"
	// MatchNodeSelectorPred defines the name of predicate MatchNodeSelector.
	MatchNodeSelectorPred = "MatchNodeSelector"
	// PodFitsResourcesPred defines the name of predicate PodFitsResources.
	PodFitsResourcesPred = "PodFitsResources"
	// NoDiskConflictPred defines the name of predicate NoDiskConflict.
	NoDiskConflictPred = "NoDiskConflict"
	// PodToleratesNodeTaintsPred defines the name of predicate PodToleratesNodeTaints.
	PodToleratesNodeTaintsPred = "PodToleratesNodeTaints"
	// CheckNodeUnschedulablePred defines the name of predicate CheckNodeUnschedulablePredicate.
	CheckNodeUnschedulablePred = "CheckNodeUnschedulable"
	// CheckNodeLabelPresencePred defines the name of predicate CheckNodeLabelPresence.
	CheckNodeLabelPresencePred = "CheckNodeLabelPresence"
	// CheckServiceAffinityPred defines the name of predicate checkServiceAffinity.
	CheckServiceAffinityPred = "CheckServiceAffinity"
	// MaxEBSVolumeCountPred defines the name of predicate MaxEBSVolumeCount.
	// DEPRECATED
	// All cloudprovider specific predicates are deprecated in favour of MaxCSIVolumeCountPred.
	MaxEBSVolumeCountPred = "MaxEBSVolumeCount"
	// MaxGCEPDVolumeCountPred defines the name of predicate MaxGCEPDVolumeCount.
	// DEPRECATED
	// All cloudprovider specific predicates are deprecated in favour of MaxCSIVolumeCountPred.
	MaxGCEPDVolumeCountPred = "MaxGCEPDVolumeCount"
	// MaxAzureDiskVolumeCountPred defines the name of predicate MaxAzureDiskVolumeCount.
	// DEPRECATED
	// All cloudprovider specific predicates are deprecated in favour of MaxCSIVolumeCountPred.
	MaxAzureDiskVolumeCountPred = "MaxAzureDiskVolumeCount"
	// MaxCinderVolumeCountPred defines the name of predicate MaxCinderDiskVolumeCount.
	// DEPRECATED
	// All cloudprovider specific predicates are deprecated in favour of MaxCSIVolumeCountPred.
	MaxCinderVolumeCountPred = "MaxCinderVolumeCount"
	// MaxCSIVolumeCountPred defines the predicate that decides how many CSI volumes should be attached.
	MaxCSIVolumeCountPred = "MaxCSIVolumeCountPred"
	// NoVolumeZoneConflictPred defines the name of predicate NoVolumeZoneConflict.
	NoVolumeZoneConflictPred = "NoVolumeZoneConflict"
	// EvenPodsSpreadPred defines the name of predicate EvenPodsSpread.
	EvenPodsSpreadPred = "EvenPodsSpread"
)

Functions

func NewInTreeRegistry

func NewInTreeRegistry() runtime.Registry

NewInTreeRegistry builds the registry with all the in-tree plugins. A scheduler that runs out of tree plugins can register additional plugins through the WithFrameworkOutOfTreeRegistry option.

func PredicateOrdering

func PredicateOrdering() []string

PredicateOrdering returns the ordering of predicate execution.

Types

type ConfigProducer

type ConfigProducer func(args ConfigProducerArgs) (config.Plugins, []config.PluginConfig)

ConfigProducer returns the set of plugins and their configuration for a predicate/priority given the args.

type ConfigProducerArgs

type ConfigProducerArgs struct {
	// Weight used for priority functions.
	Weight int32
	// NodeLabelArgs is the args for the NodeLabel plugin.
	NodeLabelArgs *config.NodeLabelArgs
	// RequestedToCapacityRatioArgs is the args for the RequestedToCapacityRatio plugin.
	RequestedToCapacityRatioArgs *config.RequestedToCapacityRatioArgs
	// ServiceAffinityArgs is the args for the ServiceAffinity plugin.
	ServiceAffinityArgs *config.ServiceAffinityArgs
	// NodeResourcesFitArgs is the args for the NodeResources fit filter.
	NodeResourcesFitArgs *config.NodeResourcesFitArgs
	// InterPodAffinityArgs is the args for InterPodAffinity plugin
	InterPodAffinityArgs *config.InterPodAffinityArgs
}

ConfigProducerArgs contains arguments that are passed to the producer. As we add more predicates/priorities to framework plugins mappings, more arguments may be added here.

type LegacyRegistry

type LegacyRegistry struct {
	// maps that associate predicates/priorities with framework plugin configurations.
	PredicateToConfigProducer map[string]ConfigProducer
	PriorityToConfigProducer  map[string]ConfigProducer
	// predicates that will always be configured.
	MandatoryPredicates sets.String
	// predicates and priorities that will be used if either was set to nil in a
	// given v1.Policy configuration.
	DefaultPredicates sets.String
	DefaultPriorities map[string]int64
}

LegacyRegistry is used to store current state of registered predicates and priorities.

func NewLegacyRegistry

func NewLegacyRegistry() *LegacyRegistry

NewLegacyRegistry returns a legacy algorithm registry of predicates and priorities.

func (*LegacyRegistry) ProcessPredicatePolicy

func (lr *LegacyRegistry) ProcessPredicatePolicy(policy config.PredicatePolicy, pluginArgs *ConfigProducerArgs) string

ProcessPredicatePolicy given a PredicatePolicy, return the plugin name implementing the predicate and update the ConfigProducerArgs if necessary.

func (*LegacyRegistry) ProcessPriorityPolicy

func (lr *LegacyRegistry) ProcessPriorityPolicy(policy config.PriorityPolicy, configProducerArgs *ConfigProducerArgs) string

ProcessPriorityPolicy given a PriorityPolicy, return the plugin name implementing the priority and update the ConfigProducerArgs if necessary.