master

Documentation

Overview

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

Index

• Constants
• func DefaultAPIResourceConfigSource() *serverstorage.ResourceConfig
• func DefaultServiceIPRange(passedServiceClusterIPRange net.IPNet) (net.IPNet, net.IP, error)
• type ClientCARegistrationHook
  • func (h ClientCARegistrationHook) PostStartHook(hookContext genericapiserver.PostStartHookContext) error
• type CompletedConfig
  • func (c CompletedConfig) New(delegationTarget genericapiserver.DelegationTarget) (*Master, error)
  • func (c CompletedConfig) NewBootstrapController(legacyRESTStorage corerest.LegacyRESTStorage, ...) *Controller
• type Config
  • func (cfg *Config) Complete() CompletedConfig
• type Controller
  • func (c *Controller) CreateOrUpdateMasterServiceIfNeeded(serviceName string, serviceIP net.IP, servicePorts []corev1.ServicePort, ...) error
  • func (c *Controller) PostStartHook(hookContext genericapiserver.PostStartHookContext) error
  • func (c *Controller) PreShutdownHook() error
  • func (c *Controller) RunKubernetesNamespaces(ch chan struct{})
  • func (c *Controller) RunKubernetesService(ch chan struct{})
  • func (c *Controller) Start()
  • func (c *Controller) Stop()
  • func (c *Controller) UpdateKubernetesService(reconcile bool) error
• type EndpointReconcilerConfig
• type ExtraConfig
• type Master
  • func (m *Master) InstallAPIs(apiResourceConfigSource serverstorage.APIResourceConfigSource, ...)
  • func (m *Master) InstallLegacyAPI(c *completedConfig, restOptionsGetter generic.RESTOptionsGetter, ...)
• type RESTStorageProvider

Constants

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
)

Functions

func DefaultAPIResourceConfigSource

func DefaultAPIResourceConfigSource() *serverstorage.ResourceConfig

func DefaultServiceIPRange

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

DefaultServiceIPRange takes a the serviceIPRange flag and returns the defaulted service ip range (if needed), api server service IP, and an error

Types

type ClientCARegistrationHook

type ClientCARegistrationHook struct {
	ClientCA []byte

	RequestHeaderUsernameHeaders     []string
	RequestHeaderGroupHeaders        []string
	RequestHeaderExtraHeaderPrefixes []string
	RequestHeaderCA                  []byte
	RequestHeaderAllowedNames        []string
}

func (ClientCARegistrationHook) PostStartHook

func (h ClientCARegistrationHook) PostStartHook(hookContext genericapiserver.PostStartHookContext) error

type CompletedConfig

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

func (CompletedConfig) New

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:

KubeletClientConfig

func (CompletedConfig) NewBootstrapController

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
}

func (*Config) Complete

func (cfg *Config) Complete() CompletedConfig

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

type Controller

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

	ServiceClusterIPRegistry rangeallocation.RangeRegistry
	ServiceClusterIPInterval time.Duration
	ServiceClusterIPRange    net.IPNet

	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

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

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

func (*Controller) PostStartHook

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

func (*Controller) PreShutdownHook

func (c *Controller) PreShutdownHook() error

func (*Controller) RunKubernetesNamespaces

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

RunKubernetesNamespaces periodically makes sure that all internal namespaces exist

func (*Controller) RunKubernetesService

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

RunKubernetesService periodically updates the kubernetes service

func (*Controller) Start

func (c *Controller) Start()

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

func (*Controller) Stop

func (c *Controller) Stop()

func (*Controller) UpdateKubernetesService

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

UpdateKubernetesService attempts to update the default Kube service.

type EndpointReconcilerConfig

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

type ExtraConfig struct {
	ClientCARegistrationHook ClientCARegistrationHook

	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
	// 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

	VersionedInformers informers.SharedInformerFactory
}

type Master

type Master struct {
	GenericAPIServer *genericapiserver.GenericAPIServer

	ClientCARegistrationHook ClientCARegistrationHook
}

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

func (*Master) InstallAPIs

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

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

func (*Master) InstallLegacyAPI

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

type RESTStorageProvider

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

RESTStorageProvider is a factory type for REST storage.