api

package
v1.7.7 Latest Latest
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Published: Sep 28, 2017 License: Apache-2.0 Imports: 7 Imported by: 0

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Index

Constants

View Source
const (
	MaxUint          = ^uint(0)
	MaxInt           = int(MaxUint >> 1)
	MaxTotalPriority = MaxInt
	MaxPriority      = 10
	MaxWeight        = MaxInt / MaxPriority
)

Variables

View Source
var (
	SchemeBuilder = runtime.NewSchemeBuilder(addKnownTypes)
	AddToScheme   = SchemeBuilder.AddToScheme
)
View Source
var Scheme = runtime.NewScheme()

Scheme is the default instance of runtime.Scheme to which types in the Kubernetes API are already registered. TODO: remove this, scheduler should not have its own scheme.

View Source
var SchemeGroupVersion = schema.GroupVersion{Group: "", Version: runtime.APIVersionInternal}

SchemeGroupVersion is group version used to register these objects TODO this should be in the "scheduler" group

Functions

This section is empty.

Types

type ExtenderArgs added in v1.2.0

type ExtenderArgs struct {
	// Pod being scheduled
	Pod v1.Pod
	// List of candidate nodes where the pod can be scheduled; to be populated
	// only if ExtenderConfig.NodeCacheCapable == false
	Nodes *v1.NodeList
	// List of candidate node names where the pod can be scheduled; to be
	// populated only if ExtenderConfig.NodeCacheCapable == true
	NodeNames *[]string
}

ExtenderArgs represents the arguments needed by the extender to filter/prioritize nodes for a pod.

type ExtenderBindingArgs added in v1.7.0

type ExtenderBindingArgs struct {
	// PodName is the name of the pod being bound
	PodName string
	// PodNamespace is the namespace of the pod being bound
	PodNamespace string
	// PodUID is the UID of the pod being bound
	PodUID types.UID
	// Node selected by the scheduler
	Node string
}

ExtenderBindingArgs represents the arguments to an extender for binding a pod to a node.

type ExtenderBindingResult added in v1.7.0

type ExtenderBindingResult struct {
	// Error message indicating failure
	Error string
}

ExtenderBindingResult represents the result of binding of a pod to a node from an extender.

type ExtenderConfig added in v1.2.0

type ExtenderConfig struct {
	// URLPrefix at which the extender is available
	URLPrefix string
	// Verb for the filter call, empty if not supported. This verb is appended to the URLPrefix when issuing the filter call to extender.
	FilterVerb string
	// Verb for the prioritize call, empty if not supported. This verb is appended to the URLPrefix when issuing the prioritize call to extender.
	PrioritizeVerb string
	// The numeric multiplier for the node scores that the prioritize call generates.
	// The weight should be a positive integer
	Weight int
	// Verb for the bind call, empty if not supported. This verb is appended to the URLPrefix when issuing the bind call to extender.
	// If this method is implemented by the extender, it is the extender's responsibility to bind the pod to apiserver. Only one extender
	// can implement this function.
	BindVerb string
	// EnableHttps specifies whether https should be used to communicate with the extender
	EnableHttps bool
	// TLSConfig specifies the transport layer security config
	TLSConfig *restclient.TLSClientConfig
	// HTTPTimeout specifies the timeout duration for a call to the extender. Filter timeout fails the scheduling of the pod. Prioritize
	// timeout is ignored, k8s/other extenders priorities are used to select the node.
	HTTPTimeout time.Duration
	// NodeCacheCapable specifies that the extender is capable of caching node information,
	// so the scheduler should only send minimal information about the eligible nodes
	// assuming that the extender already cached full details of all nodes in the cluster
	NodeCacheCapable bool
}

Holds the parameters used to communicate with the extender. If a verb is unspecified/empty, it is assumed that the extender chose not to provide that extension.

type ExtenderFilterResult added in v1.2.0

type ExtenderFilterResult struct {
	// Filtered set of nodes where the pod can be scheduled; to be populated
	// only if ExtenderConfig.NodeCacheCapable == false
	Nodes *v1.NodeList
	// Filtered set of nodes where the pod can be scheduled; to be populated
	// only if ExtenderConfig.NodeCacheCapable == true
	NodeNames *[]string
	// Filtered out nodes where the pod can't be scheduled and the failure messages
	FailedNodes FailedNodesMap
	// Error message indicating failure
	Error string
}

ExtenderFilterResult represents the results of a filter call to an extender

type FailedNodesMap added in v1.4.0

type FailedNodesMap map[string]string

FailedNodesMap represents the filtered out nodes, with node names and failure messages

type HostPriority added in v1.2.0

type HostPriority struct {
	// Name of the host
	Host string
	// Score associated with the host
	Score int
}

HostPriority represents the priority of scheduling to a particular host, higher priority is better.

type HostPriorityList added in v1.2.0

type HostPriorityList []HostPriority

func (HostPriorityList) Len added in v1.2.0

func (h HostPriorityList) Len() int

func (HostPriorityList) Less added in v1.2.0

func (h HostPriorityList) Less(i, j int) bool

func (HostPriorityList) Swap added in v1.2.0

func (h HostPriorityList) Swap(i, j int)

type LabelPreference

type LabelPreference struct {
	// Used to identify node "groups"
	Label string
	// This is a boolean flag
	// If true, higher priority is given to nodes that have the label
	// If false, higher priority is given to nodes that do not have the label
	Presence bool
}

Holds the parameters that are used to configure the corresponding priority function

type LabelsPresence

type LabelsPresence struct {
	// The list of labels that identify node "groups"
	// All of the labels should be either present (or absent) for the node to be considered a fit for hosting the pod
	Labels []string
	// The boolean flag that indicates whether the labels should be present or absent from the node
	Presence bool
}

Holds the parameters that are used to configure the corresponding predicate

type Policy

type Policy struct {
	metav1.TypeMeta
	// Holds the information to configure the fit predicate functions
	Predicates []PredicatePolicy
	// Holds the information to configure the priority functions
	Priorities []PriorityPolicy
	// Holds the information to communicate with the extender(s)
	ExtenderConfigs []ExtenderConfig
	// RequiredDuringScheduling affinity is not symmetric, but there is an implicit PreferredDuringScheduling affinity rule
	// corresponding to every RequiredDuringScheduling affinity rule.
	// HardPodAffinitySymmetricWeight represents the weight of implicit PreferredDuringScheduling affinity rule, in the range 1-100.
	HardPodAffinitySymmetricWeight int
}

type PredicateArgument

type PredicateArgument struct {
	// The predicate that provides affinity for pods belonging to a service
	// It uses a label to identify nodes that belong to the same "group"
	ServiceAffinity *ServiceAffinity
	// The predicate that checks whether a particular node has a certain label
	// defined or not, regardless of value
	LabelsPresence *LabelsPresence
}

Represents the arguments that the different types of predicates take Only one of its members may be specified

type PredicatePolicy

type PredicatePolicy struct {
	// Identifier of the predicate policy
	// For a custom predicate, the name can be user-defined
	// For the Kubernetes provided predicates, the name is the identifier of the pre-defined predicate
	Name string
	// Holds the parameters to configure the given predicate
	Argument *PredicateArgument
}

type PriorityArgument

type PriorityArgument struct {
	// The priority function that ensures a good spread (anti-affinity) for pods belonging to a service
	// It uses a label to identify nodes that belong to the same "group"
	ServiceAntiAffinity *ServiceAntiAffinity
	// The priority function that checks whether a particular node has a certain label
	// defined or not, regardless of value
	LabelPreference *LabelPreference
}

Represents the arguments that the different types of priorities take. Only one of its members may be specified

type PriorityPolicy

type PriorityPolicy struct {
	// Identifier of the priority policy
	// For a custom priority, the name can be user-defined
	// For the Kubernetes provided priority functions, the name is the identifier of the pre-defined priority function
	Name string
	// The numeric multiplier for the node scores that the priority function generates
	// The weight should be a positive integer
	Weight int
	// Holds the parameters to configure the given priority function
	Argument *PriorityArgument
}

type ServiceAffinity

type ServiceAffinity struct {
	// The list of labels that identify node "groups"
	// All of the labels should match for the node to be considered a fit for hosting the pod
	Labels []string
}

Holds the parameters that are used to configure the corresponding predicate

type ServiceAntiAffinity

type ServiceAntiAffinity struct {
	// Used to identify node "groups"
	Label string
}

Holds the parameters that are used to configure the corresponding priority function

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