v1.19.16 Latest Latest

This package is not in the latest version of its module.

Go to latest
Published: Oct 27, 2021 License: Apache-2.0 Imports: 123 Imported by: 0



Package master contains code for setting up and running a Kubernetes cluster master.



View Source
const (
	// DefaultEndpointReconcilerInterval is the default amount of time for how often the endpoints for
	// the kubernetes Service are reconciled.
	DefaultEndpointReconcilerInterval = 10 * time.Second
	// DefaultEndpointReconcilerTTL is the default TTL timeout for the storage layer
	DefaultEndpointReconcilerTTL = 15 * time.Second


This section is empty.


func DefaultAPIResourceConfigSource added in v1.3.0

func DefaultAPIResourceConfigSource() *serverstorage.ResourceConfig

DefaultAPIResourceConfigSource returns default configuration for an APIResource.

func ServiceIPRange added in v1.17.0

func ServiceIPRange(passedServiceClusterIPRange net.IPNet) (net.IPNet, net.IP, error)

ServiceIPRange checks if the serviceClusterIPRange flag is nil, raising a warning if so and setting service ip range to the default value in kubeoptions.DefaultServiceIPCIDR for now until the default is removed per the deprecation timeline guidelines. Returns service ip range, api server service IP, and an error


type CompletedConfig added in v1.8.0

type CompletedConfig struct {
	// contains filtered or unexported fields

CompletedConfig embeds a private pointer that cannot be instantiated outside of this package

func (CompletedConfig) New added in v1.8.0

func (c CompletedConfig) New(delegationTarget genericapiserver.DelegationTarget) (*Master, error)

New returns a new instance of Master from the given config. Certain config fields will be set to a default value if unset. Certain config fields must be specified, including:


func (CompletedConfig) NewBootstrapController added in v1.8.0

func (c CompletedConfig) NewBootstrapController(legacyRESTStorage corerest.LegacyRESTStorage, serviceClient corev1client.ServicesGetter, nsClient corev1client.NamespacesGetter, eventClient corev1client.EventsGetter, healthClient rest.Interface) *Controller

NewBootstrapController returns a controller for watching the core capabilities of the master

type Config

type Config struct {
	GenericConfig *genericapiserver.Config
	ExtraConfig   ExtraConfig

Config defines configuration for the master

func (*Config) Complete added in v1.5.0

func (c *Config) Complete() CompletedConfig

Complete fills in any fields not set that are required to have valid data. It's mutating the receiver.

type Controller added in v0.17.0

type Controller struct {
	ServiceClient   corev1client.ServicesGetter
	NamespaceClient corev1client.NamespacesGetter
	EventClient     corev1client.EventsGetter

	ServiceClusterIPRegistry          rangeallocation.RangeRegistry
	ServiceClusterIPRange             net.IPNet
	SecondaryServiceClusterIPRegistry rangeallocation.RangeRegistry
	SecondaryServiceClusterIPRange    net.IPNet

	ServiceClusterIPInterval time.Duration

	ServiceNodePortRegistry rangeallocation.RangeRegistry
	ServiceNodePortInterval time.Duration
	ServiceNodePortRange    utilnet.PortRange

	EndpointReconciler reconcilers.EndpointReconciler
	EndpointInterval   time.Duration

	SystemNamespaces         []string
	SystemNamespacesInterval time.Duration

	PublicIP net.IP

	// ServiceIP indicates where the kubernetes service will live.  It may not be nil.
	ServiceIP                 net.IP
	ServicePort               int
	ExtraServicePorts         []corev1.ServicePort
	ExtraEndpointPorts        []corev1.EndpointPort
	PublicServicePort         int
	KubernetesServiceNodePort int
	// contains filtered or unexported fields

Controller is the controller manager for the core bootstrap Kubernetes controller loops, which manage creating the "kubernetes" service, the "default", "kube-system" and "kube-public" namespaces, and provide the IP repair check on service IPs

func (*Controller) CreateOrUpdateMasterServiceIfNeeded added in v1.2.0

func (c *Controller) CreateOrUpdateMasterServiceIfNeeded(serviceName string, serviceIP net.IP, servicePorts []corev1.ServicePort, serviceType corev1.ServiceType, reconcile bool) error

CreateOrUpdateMasterServiceIfNeeded will create the specified service if it doesn't already exist.

func (*Controller) PostStartHook added in v1.5.0

func (c *Controller) PostStartHook(hookContext genericapiserver.PostStartHookContext) error

PostStartHook initiates the core controller loops that must exist for bootstrapping.

func (*Controller) PreShutdownHook added in v1.9.0

func (c *Controller) PreShutdownHook() error

PreShutdownHook triggers the actions needed to shut down the API Server cleanly.

func (*Controller) RunKubernetesNamespaces added in v1.3.0

func (c *Controller) RunKubernetesNamespaces(ch chan struct{})

RunKubernetesNamespaces periodically makes sure that all internal namespaces exist

func (*Controller) RunKubernetesService added in v0.17.0

func (c *Controller) RunKubernetesService(ch chan struct{})

RunKubernetesService periodically updates the kubernetes service

func (*Controller) Start added in v0.17.0

func (c *Controller) Start()

Start begins the core controller loops that must exist for bootstrapping a cluster.

func (*Controller) Stop added in v1.9.0

func (c *Controller) Stop()

Stop cleans up this API Servers endpoint reconciliation leases so another master can take over more quickly.

func (*Controller) UpdateKubernetesService added in v0.17.0

func (c *Controller) UpdateKubernetesService(reconcile bool) error

UpdateKubernetesService attempts to update the default Kube service.

type EndpointReconcilerConfig added in v1.4.0

type EndpointReconcilerConfig struct {
	Reconciler reconcilers.EndpointReconciler
	Interval   time.Duration

EndpointReconcilerConfig holds the endpoint reconciler and endpoint reconciliation interval to be used by the master.

type ExtraConfig added in v1.8.0

type ExtraConfig struct {
	ClusterAuthenticationInfo clusterauthenticationtrust.ClusterAuthenticationInfo

	APIResourceConfigSource  serverstorage.APIResourceConfigSource
	StorageFactory           serverstorage.StorageFactory
	EndpointReconcilerConfig EndpointReconcilerConfig
	EventTTL                 time.Duration
	KubeletClientConfig      kubeletclient.KubeletClientConfig

	// Used to start and monitor tunneling
	Tunneler          tunneler.Tunneler
	EnableLogsSupport bool
	ProxyTransport    http.RoundTripper

	// Values to build the IP addresses used by discovery
	// The range of IPs to be assigned to services with type=ClusterIP or greater
	ServiceIPRange net.IPNet
	// The IP address for the GenericAPIServer service (must be inside ServiceIPRange)
	APIServerServiceIP net.IP

	// dual stack services, the range represents an alternative IP range for service IP
	// must be of different family than primary (ServiceIPRange)
	SecondaryServiceIPRange net.IPNet
	// the secondary IP address the GenericAPIServer service (must be inside SecondaryServiceIPRange)
	SecondaryAPIServerServiceIP net.IP

	// Port for the apiserver service.
	APIServerServicePort int

	// The range of ports to be assigned to services with type=NodePort or greater
	ServiceNodePortRange utilnet.PortRange
	// Additional ports to be exposed on the GenericAPIServer service
	// extraServicePorts is injectable in the event that more ports
	// (other than the default 443/tcp) are exposed on the GenericAPIServer
	// and those ports need to be load balanced by the GenericAPIServer
	// service because this pkg is linked by out-of-tree projects
	// like openshift which want to use the GenericAPIServer but also do
	// more stuff.
	ExtraServicePorts []apiv1.ServicePort
	// Additional ports to be exposed on the GenericAPIServer endpoints
	// Port names should align with ports defined in ExtraServicePorts
	ExtraEndpointPorts []apiv1.EndpointPort
	// If non-zero, the "kubernetes" services uses this port as NodePort.
	KubernetesServiceNodePort int

	// Number of masters running; all masters must be started with the
	// same value for this field. (Numbers > 1 currently untested.)
	MasterCount int

	// MasterEndpointReconcileTTL sets the time to live in seconds of an
	// endpoint record recorded by each master. The endpoints are checked at an
	// interval that is 2/3 of this value and this value defaults to 15s if
	// unset. In very large clusters, this value may be increased to reduce the
	// possibility that the master endpoint record expires (due to other load
	// on the etcd server) and causes masters to drop in and out of the
	// kubernetes service record. It is not recommended to set this value below
	// 15s.
	MasterEndpointReconcileTTL time.Duration

	// Selects which reconciler to use
	EndpointReconcilerType reconcilers.Type

	ServiceAccountIssuer        serviceaccount.TokenGenerator
	ServiceAccountMaxExpiration time.Duration
	ExtendExpiration            bool

	// ServiceAccountIssuerDiscovery
	ServiceAccountIssuerURL  string
	ServiceAccountJWKSURI    string
	ServiceAccountPublicKeys []interface{}

	VersionedInformers informers.SharedInformerFactory

ExtraConfig defines extra configuration for the master

type Master

type Master struct {
	GenericAPIServer *genericapiserver.GenericAPIServer

	ClusterAuthenticationInfo clusterauthenticationtrust.ClusterAuthenticationInfo

Master contains state for a Kubernetes cluster master/api server.

func (*Master) InstallAPIs added in v1.2.0

func (m *Master) InstallAPIs(apiResourceConfigSource serverstorage.APIResourceConfigSource, restOptionsGetter generic.RESTOptionsGetter, restStorageProviders ...RESTStorageProvider) error

InstallAPIs will install the APIs for the restStorageProviders if they are enabled.

func (*Master) InstallLegacyAPI added in v1.5.0

func (m *Master) InstallLegacyAPI(c *completedConfig, restOptionsGetter generic.RESTOptionsGetter, legacyRESTStorageProvider corerest.LegacyRESTStorageProvider) error

InstallLegacyAPI will install the legacy APIs for the restStorageProviders if they are enabled.

type RESTStorageProvider added in v1.4.0

type RESTStorageProvider interface {
	GroupName() string
	NewRESTStorage(apiResourceConfigSource serverstorage.APIResourceConfigSource, restOptionsGetter generic.RESTOptionsGetter) (genericapiserver.APIGroupInfo, bool, error)

RESTStorageProvider is a factory type for REST storage.


Path Synopsis
Package ports defines ports used by various pieces of the kubernetes infrastructure.
Package ports defines ports used by various pieces of the kubernetes infrastructure.
Package reconcilers provides objects for managing the list of active masters.
Package reconcilers provides objects for managing the list of active masters.
Package storageversionhashdata is for test only.
Package storageversionhashdata is for test only.

Jump to

Keyboard shortcuts

? : This menu
/ : Search site
f or F : Jump to
y or Y : Canonical URL