healthcheck

Documentation

Overview

Package healthcheck provides tools for serving kube-proxy healthchecks.

Index

• Constants
• type FakeServiceHealthServer
  • func (fake FakeServiceHealthServer) SyncEndpoints(_ map[types.NamespacedName]int) error
  • func (fake FakeServiceHealthServer) SyncServices(_ map[types.NamespacedName]uint16) error
• type ProxierHealthUpdater
  • func NewProxierHealthServer(addr string, healthTimeout time.Duration, recorder events.EventRecorder, ...) ProxierHealthUpdater
• type ServiceHealthServer
  • func NewFakeServiceHealthServer() ServiceHealthServer
  • func NewServiceHealthServer(hostname string, recorder events.EventRecorder, ...) ServiceHealthServer

Constants

const (
	// ToBeDeletedTaint is a taint used by the CLuster Autoscaler before marking a node for deletion. Defined in
	// https://github.com/kubernetes/autoscaler/blob/e80ab518340f88f364fe3ef063f8303755125971/cluster-autoscaler/utils/deletetaint/delete.go#L36
	ToBeDeletedTaint = "ToBeDeletedByClusterAutoscaler"
)

Types

type FakeServiceHealthServer

type FakeServiceHealthServer struct{}

FakeServiceHealthServer is a fake ServiceHealthServer for test programs

func (FakeServiceHealthServer) SyncEndpoints

func (fake FakeServiceHealthServer) SyncEndpoints(_ map[types.NamespacedName]int) error

SyncEndpoints is part of ServiceHealthServer

func (FakeServiceHealthServer) SyncServices

func (fake FakeServiceHealthServer) SyncServices(_ map[types.NamespacedName]uint16) error

SyncServices is part of ServiceHealthServer

type ProxierHealthUpdater

type ProxierHealthUpdater interface {
	// QueuedUpdate should be called when the proxier receives a Service or Endpoints
	// event containing information that requires updating service rules.
	QueuedUpdate()

	// Updated should be called when the proxier has successfully updated the service
	// rules to reflect the current state.
	Updated()

	// Run starts the healthz HTTP server and blocks until it exits.
	Run() error

	// Sync the node and determine if its eligible or not. Eligible is
	// defined as being: not tainted by ToBeDeletedTaint and not deleted.
	SyncNode(node *v1.Node)
	// contains filtered or unexported methods
}

ProxierHealthUpdater allows callers to update healthz timestamp only.

func NewProxierHealthServer

func NewProxierHealthServer(addr string, healthTimeout time.Duration, recorder events.EventRecorder, nodeRef *v1.ObjectReference) ProxierHealthUpdater

NewProxierHealthServer returns a proxier health http server.

type ServiceHealthServer

type ServiceHealthServer interface {
	// Make the new set of services be active.  Services that were open before
	// will be closed.  Services that are new will be opened.  Service that
	// existed and are in the new set will be left alone.  The value of the map
	// is the healthcheck-port to listen on.
	SyncServices(newServices map[types.NamespacedName]uint16) error
	// Make the new set of endpoints be active.  Endpoints for services that do
	// not exist will be dropped.  The value of the map is the number of
	// endpoints the service has on this node.
	SyncEndpoints(newEndpoints map[types.NamespacedName]int) error
}

ServiceHealthServer serves HTTP endpoints for each service name, with results based on the endpoints. If there are 0 endpoints for a service, it returns a 503 "Service Unavailable" error (telling LBs not to use this node). If there are 1 or more endpoints, it returns a 200 "OK".

func NewFakeServiceHealthServer

func NewFakeServiceHealthServer() ServiceHealthServer

NewFakeServiceHealthServer allocates a new fake service healthcheck server manager

func NewServiceHealthServer

func NewServiceHealthServer(hostname string, recorder events.EventRecorder, nodePortAddresses *proxyutil.NodePortAddresses, healthzServer proxierHealthChecker) ServiceHealthServer

NewServiceHealthServer allocates a new service healthcheck server manager