priority

Documentation

Index

• type PodEvictionAdmission
  • func NewDefaultPodEvictionAdmission() PodEvictionAdmission
  • func NewSequentialPodEvictionAdmission(admissions []PodEvictionAdmission) PodEvictionAdmission
• type UpdateConfig
• type UpdatePriorityCalculator
  • func NewUpdatePriorityCalculator(policy *vpa_types.PodResourcePolicy, ...) UpdatePriorityCalculator
  • func (calc *UpdatePriorityCalculator) AddPod(pod *apiv1.Pod, recommendation *vpa_types.RecommendedPodResources, ...)
  • func (calc *UpdatePriorityCalculator) GetSortedPods(admission PodEvictionAdmission) []*apiv1.Pod

Types

type PodEvictionAdmission

type PodEvictionAdmission interface {
	// LoopInit initializes PodEvictionAdmission for next Updater loop with the live pods and
	// pods currently controlled by VPA in this cluster.
	LoopInit(allLivePods []*apiv1.Pod, vpaControlledPods map[*vpa_types.VerticalPodAutoscaler][]*apiv1.Pod)
	// Admit returns true if PodEvictionAdmission decides that pod can be evicted with given recommendation.
	Admit(pod *apiv1.Pod, recommendation *vpa_types.RecommendedPodResources) bool
	// CleanUp cleans up any state that PodEvictionAdmission may keep. Called
	// when no VPA objects are present in the cluster.
	CleanUp()
}

PodEvictionAdmission controls evictions of pods.

func NewDefaultPodEvictionAdmission

func NewDefaultPodEvictionAdmission() PodEvictionAdmission

NewDefaultPodEvictionAdmission constructs new PodEvictionAdmission that admits all pods.

func NewSequentialPodEvictionAdmission

func NewSequentialPodEvictionAdmission(admissions []PodEvictionAdmission) PodEvictionAdmission

NewSequentialPodEvictionAdmission constructs PodEvictionAdmission that will chain provided PodEvictionAdmission objects

type UpdateConfig

type UpdateConfig struct {
	// MinChangePriority is the minimum change priority that will trigger a update.
	// TODO: should have separate for Mem and CPU?
	MinChangePriority float64
}

UpdateConfig holds configuration for UpdatePriorityCalculator

type UpdatePriorityCalculator

type UpdatePriorityCalculator struct {
	// contains filtered or unexported fields
}

UpdatePriorityCalculator is responsible for prioritizing updates on pods. It can returns a sorted list of pods in order of update priority. Update priority is proportional to fraction by which resources should be increased / decreased. i.e. pod with 10M current memory and recommendation 20M will have higher update priority than pod with 100M current memory and 150M recommendation (100% increase vs 50% increase)

func NewUpdatePriorityCalculator

func NewUpdatePriorityCalculator(policy *vpa_types.PodResourcePolicy,
	conditions []vpa_types.VerticalPodAutoscalerCondition,
	config *UpdateConfig,
	processor vpa_api_util.RecommendationProcessor) UpdatePriorityCalculator

NewUpdatePriorityCalculator creates new UpdatePriorityCalculator for the given resources policy and configuration. If the given policy is nil, there will be no policy restriction on update. If the given config is nil, default values are used.

func (*UpdatePriorityCalculator) AddPod

func (calc *UpdatePriorityCalculator) AddPod(pod *apiv1.Pod, recommendation *vpa_types.RecommendedPodResources, now time.Time)

AddPod adds pod to the UpdatePriorityCalculator.

func (*UpdatePriorityCalculator) GetSortedPods

func (calc *UpdatePriorityCalculator) GetSortedPods(admission PodEvictionAdmission) []*apiv1.Pod

GetSortedPods returns a list of pods ordered by update priority (highest update priority first)