daemon

Documentation

Overview

Package daemon contains logic for watching and synchronizing daemons.

Index

• Constants
• func DecodeHistory(history *apps.ControllerRevision) (*v1.PodTemplateSpec, error)
• func Match(template *v1.PodTemplateSpec, history *apps.ControllerRevision) (bool, error)
• func NewPod(ds *extensions.DaemonSet, nodeName string) *v1.Pod
• func Predicates(pod *v1.Pod, nodeInfo *schedulercache.NodeInfo) (bool, []algorithm.PredicateFailureReason, error)
• type DaemonSetsController
  • func NewDaemonSetsController(daemonSetInformer extensionsinformers.DaemonSetInformer, ...) *DaemonSetsController
  • func (dsc *DaemonSetsController) Run(workers int, stopCh <-chan struct{})

Constants

const (
	// The value of 250 is chosen b/c values that are too high can cause registry DoS issues
	BurstReplicas = 250

	// If sending a status upate to API server fails, we retry a finite number of times.
	StatusUpdateRetries = 1

	// Reasons for DaemonSet events
	// SelectingAllReason is added to an event when a DaemonSet selects all Pods.
	SelectingAllReason = "SelectingAll"
	// FailedPlacementReason is added to an event when a DaemonSet can't schedule a Pod to a specified node.
	FailedPlacementReason = "FailedPlacement"
	// FailedDaemonPodReason is added to an event when the status of a Pod of a DaemonSet is 'Failed'.
	FailedDaemonPodReason = "FailedDaemonPod"
)

Functions

func DecodeHistory

func DecodeHistory(history *apps.ControllerRevision) (*v1.PodTemplateSpec, error)

func Match

func Match(template *v1.PodTemplateSpec, history *apps.ControllerRevision) (bool, error)

Match check if ds template is semantically equal to the template stored in history

func NewPod

func NewPod(ds *extensions.DaemonSet, nodeName string) *v1.Pod

func Predicates

func Predicates(pod *v1.Pod, nodeInfo *schedulercache.NodeInfo) (bool, []algorithm.PredicateFailureReason, error)

Predicates checks if a DaemonSet's pod can be scheduled on a node using GeneralPredicates and PodToleratesNodeTaints predicate

Types

type DaemonSetsController

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

DaemonSetsController is responsible for synchronizing DaemonSet objects stored in the system with actual running pods.

func NewDaemonSetsController

func NewDaemonSetsController(daemonSetInformer extensionsinformers.DaemonSetInformer, historyInformer appsinformers.ControllerRevisionInformer, podInformer coreinformers.PodInformer, nodeInformer coreinformers.NodeInformer, kubeClient clientset.Interface) *DaemonSetsController

func (*DaemonSetsController) Run

func (dsc *DaemonSetsController) Run(workers int, stopCh <-chan struct{})

Run begins watching and syncing daemon sets.