util

Documentation

Index

• Constants
• func GetControllerRef(pod *v1.Pod) *metav1.OwnerReference
• func GetNamespacesFromPodAffinityTerm(pod *v1.Pod, podAffinityTerm *v1.PodAffinityTerm) sets.String
• func GetNonzeroRequests(requests *v1.ResourceList) (int64, int64)
• func NodesHaveSameTopologyKey(nodeA, nodeB *v1.Node, topologyKey string) bool
• func PodMatchesTermsNamespaceAndSelector(pod *v1.Pod, namespaces sets.String, selector labels.Selector) bool
• type Topologies
  • func (tps *Topologies) NodesHaveSameTopologyKey(nodeA, nodeB *v1.Node, topologyKey string) bool

Constants

const DefaultMemoryRequest int64 = 200 * 1024 * 1024 // 200 MB

const DefaultMilliCpuRequest int64 = 100 // 0.1 core

For each of these resources, a pod that doesn't request the resource explicitly will be treated as having requested the amount indicated below, for the purpose of computing priority only. This ensures that when scheduling zero-request pods, such pods will not all be scheduled to the machine with the smallest in-use request, and that when scheduling regular pods, such pods will not see zero-request pods as consuming no resources whatsoever. We chose these values to be similar to the resources that we give to cluster addon pods (#10653). But they are pretty arbitrary. As described in #11713, we use request instead of limit to deal with resource requirements.

Functions

func GetControllerRef

func GetControllerRef(pod *v1.Pod) *metav1.OwnerReference

func GetNamespacesFromPodAffinityTerm

func GetNamespacesFromPodAffinityTerm(pod *v1.Pod, podAffinityTerm *v1.PodAffinityTerm) sets.String

GetNamespacesFromPodAffinityTerm returns a set of names according to the namespaces indicated in podAffinityTerm. If namespaces is empty it considers the given pod's namespace.

func GetNonzeroRequests

func GetNonzeroRequests(requests *v1.ResourceList) (int64, int64)

GetNonzeroRequests returns the default resource request if none is found or what is provided on the request TODO: Consider setting default as a fixed fraction of machine capacity (take "capacity v1.ResourceList" as an additional argument here) rather than using constants

func NodesHaveSameTopologyKey

func NodesHaveSameTopologyKey(nodeA, nodeB *v1.Node, topologyKey string) bool

NodesHaveSameTopologyKey checks if nodeA and nodeB have same label value with given topologyKey as label key. Returns false if topologyKey is empty.

func PodMatchesTermsNamespaceAndSelector

func PodMatchesTermsNamespaceAndSelector(pod *v1.Pod, namespaces sets.String, selector labels.Selector) bool

PodMatchesTermsNamespaceAndSelector returns true if the given <pod> matches the namespace and selector defined by <affinityPod>`s <term>.

Types

type Topologies

type Topologies struct {
	DefaultKeys []string
}

func (*Topologies) NodesHaveSameTopologyKey

func (tps *Topologies) NodesHaveSameTopologyKey(nodeA, nodeB *v1.Node, topologyKey string) bool

NodesHaveSameTopologyKey checks if nodeA and nodeB have same label value with given topologyKey as label key. If the topologyKey is empty, check if the two nodes have any of the default topologyKeys, and have same corresponding label value.