Documentation ¶
Index ¶
- Constants
- Variables
- type ExtenderArgs
- type ExtenderBindingArgs
- type ExtenderBindingResult
- type ExtenderConfig
- type ExtenderFilterResult
- type FailedNodesMap
- type HostPriority
- type HostPriorityList
- type LabelPreference
- type LabelsPresence
- type Policy
- type PredicateArgument
- type PredicatePolicy
- type PriorityArgument
- type PriorityPolicy
- type ServiceAffinity
- type ServiceAntiAffinity
Constants ¶
const ( MaxUint = ^uint(0) MaxInt = int(MaxUint >> 1) MaxTotalPriority = MaxInt MaxPriority = 10 MaxWeight = MaxInt / MaxPriority )
Variables ¶
var ( SchemeBuilder = runtime.NewSchemeBuilder(addKnownTypes) AddToScheme = SchemeBuilder.AddToScheme )
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.
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
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