nodelifecycle

Documentation

Index

• Variables
• func Add(ctx context.Context, cfg *appconfig.CompletedConfig, mgr manager.Manager) error
• func GenGetPodsAssignedToNode(c client.Client) func(string) ([]*v1.Pod, error)
• func Register()
• type ReconcileNodeLifeCycle
  • func (nc *ReconcileNodeLifeCycle) ComputeZoneState(nodeReadyConditions []*v1.NodeCondition) (int, ZoneState)
  • func (nc *ReconcileNodeLifeCycle) HealthyQPSFunc(_ int) float32
  • func (nc *ReconcileNodeLifeCycle) ReducedQPSFunc(nodeNum int) float32
  • func (nc *ReconcileNodeLifeCycle) Run(ctx context.Context, waitForControllerStarted func(ctx context.Context) bool)
• type ZoneState

Variables

var (

	// UnreachableTaintTemplate is the taint for when a node becomes unreachable.
	UnreachableTaintTemplate = &v1.Taint{
		Key:    v1.TaintNodeUnreachable,
		Effect: v1.TaintEffectNoExecute,
	}

	// NotReadyTaintTemplate is the taint for when a node is not ready for
	// executing pods
	NotReadyTaintTemplate = &v1.Taint{
		Key:    v1.TaintNodeNotReady,
		Effect: v1.TaintEffectNoExecute,
	}
)

Functions

func Add

func Add(ctx context.Context, cfg *appconfig.CompletedConfig, mgr manager.Manager) error

Add creates a new CsrApprover Controller and adds it to the Manager with default RBAC. The Manager will set fields on the Controller and Start it when the Manager is Started.

func GenGetPodsAssignedToNode

func GenGetPodsAssignedToNode(c client.Client) func(string) ([]*v1.Pod, error)

func Register

func Register()

Register the metrics that are to be monitored.

Types

type ReconcileNodeLifeCycle

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

ReconcileNodeLifeCycle is the controller that manages node's life cycle.

func (*ReconcileNodeLifeCycle) ComputeZoneState

func (nc *ReconcileNodeLifeCycle) ComputeZoneState(nodeReadyConditions []*v1.NodeCondition) (int, ZoneState)

ComputeZoneState returns a slice of NodeReadyConditions for all Nodes in a given zone. The zone is considered: - fullyDisrupted if there're no Ready Nodes, - partiallyDisrupted if at least than nc.unhealthyZoneThreshold percent of Nodes are not Ready, - normal otherwise

func (*ReconcileNodeLifeCycle) HealthyQPSFunc

func (nc *ReconcileNodeLifeCycle) HealthyQPSFunc(_ int) float32

HealthyQPSFunc returns the default value for cluster eviction rate - we take nodeNum for consistency with ReducedQPSFunc.

func (*ReconcileNodeLifeCycle) ReducedQPSFunc

func (nc *ReconcileNodeLifeCycle) ReducedQPSFunc(nodeNum int) float32

ReducedQPSFunc returns the QPS for when a the cluster is large make evictions slower, if they're small stop evictions altogether.

func (*ReconcileNodeLifeCycle) Run

func (nc *ReconcileNodeLifeCycle) Run(ctx context.Context, waitForControllerStarted func(ctx context.Context) bool)

Run starts an asynchronous loop that monitors the status of cluster nodes.

type ZoneState

type ZoneState string

ZoneState is the state of a given zone.