master

Documentation

Overview

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

Index

• Constants
• func DefaultAPIResourceConfigSource() *genericapiserver.ResourceConfig
• func MetricsWithReset(w http.ResponseWriter, req *http.Request)
• func NewMasterCountEndpointReconciler(masterCount int, endpointRegistry endpoint.Registry) *masterCountEndpointReconciler
• type Config
• type Controller
  • func (c *Controller) CreateNamespaceIfNeeded(ns string) error
  • func (c *Controller) CreateOrUpdateMasterServiceIfNeeded(serviceName string, serviceIP net.IP, servicePorts []api.ServicePort, ...) error
  • func (c *Controller) RunKubernetesNamespaces(ch chan struct{})
  • func (c *Controller) RunKubernetesService(ch chan struct{})
  • func (c *Controller) Start()
  • func (c *Controller) UpdateKubernetesService(reconcile bool) error
• type EndpointReconciler
• type EndpointReconcilerConfig
• type Master
  • func New(c *Config) (*Master, error)
  • func (m *Master) GetRESTOptionsOrDie(c *Config, resource unversioned.GroupResource) generic.RESTOptions
  • func (m *Master) HasThirdPartyResource(rsrc *extensions.ThirdPartyResource) (bool, error)
  • func (m *Master) InstallAPIs(c *Config)
  • func (m *Master) InstallThirdPartyResource(rsrc *extensions.ThirdPartyResource) error
  • func (m *Master) IsTunnelSyncHealthy(req *http.Request) error
  • func (m *Master) ListThirdPartyResources() []string
  • func (m *Master) NewBootstrapController(endpointReconcilerConfig EndpointReconcilerConfig) *Controller
  • func (m *Master) RemoveThirdPartyResource(path string) error
• type ThirdPartyController
  • func (t *ThirdPartyController) SyncOneResource(rsrc *expapi.ThirdPartyResource) error
  • func (t *ThirdPartyController) SyncResources() error

Constants

const (
	// DefaultEndpointReconcilerInterval is the default amount of time for how often the endpoints for
	// the kubernetes Service are reconciled.
	DefaultEndpointReconcilerInterval = 10 * time.Second
)

Functions

func DefaultAPIResourceConfigSource

func DefaultAPIResourceConfigSource() *genericapiserver.ResourceConfig

func MetricsWithReset

func MetricsWithReset(w http.ResponseWriter, req *http.Request)

MetricsWithReset is a handler that resets metrics when DELETE is passed to the endpoint.

func NewMasterCountEndpointReconciler

func NewMasterCountEndpointReconciler(masterCount int, endpointRegistry endpoint.Registry) *masterCountEndpointReconciler

NewMasterCountEndpointReconciler creates a new EndpointReconciler that reconciles based on a specified expected number of masters.

Types

type Config

type Config struct {
	*genericapiserver.Config

	EnableCoreControllers    bool
	EndpointReconcilerConfig EndpointReconcilerConfig
	DeleteCollectionWorkers  int
	EventTTL                 time.Duration
	KubeletClient            kubeletclient.KubeletClient
	// Used to start and monitor tunneling
	Tunneler genericapiserver.Tunneler
	// contains filtered or unexported fields
}

type Controller

type Controller struct {
	NamespaceRegistry namespace.Registry
	ServiceRegistry   service.Registry

	ServiceClusterIPRegistry service.RangeRegistry
	ServiceClusterIPInterval time.Duration
	ServiceClusterIPRange    *net.IPNet

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

	EndpointReconciler EndpointReconciler
	EndpointInterval   time.Duration

	SystemNamespaces         []string
	SystemNamespacesInterval time.Duration

	PublicIP net.IP

	ServiceIP                 net.IP
	ServicePort               int
	ExtraServicePorts         []api.ServicePort
	ExtraEndpointPorts        []api.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" and "kube-system" namespace, and provide the IP repair check on service IPs

func (*Controller) CreateNamespaceIfNeeded

func (c *Controller) CreateNamespaceIfNeeded(ns string) error

CreateNamespaceIfNeeded will create a namespace if it doesn't already exist

func (*Controller) CreateOrUpdateMasterServiceIfNeeded

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

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

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) UpdateKubernetesService

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

UpdateKubernetesService attempts to update the default Kube service.

type EndpointReconciler

type EndpointReconciler interface {
	// ReconcileEndpoints sets the endpoints for the given apiserver service (ro or rw).
	// ReconcileEndpoints expects that the endpoints objects it manages will all be
	// managed only by ReconcileEndpoints; therefore, to understand this, you need only
	// understand the requirements.
	//
	// Requirements:
	//  * All apiservers MUST use the same ports for their {rw, ro} services.
	//  * All apiservers MUST use ReconcileEndpoints and only ReconcileEndpoints to manage the
	//      endpoints for their {rw, ro} services.
	//  * ReconcileEndpoints is called periodically from all apiservers.
	ReconcileEndpoints(serviceName string, ip net.IP, endpointPorts []api.EndpointPort, reconcilePorts bool) error
}

EndpointReconciler knows how to reconcile the endpoints for the apiserver service.

type EndpointReconcilerConfig

type EndpointReconcilerConfig struct {
	Reconciler EndpointReconciler
	Interval   time.Duration
}

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

type Master

type Master struct {
	*genericapiserver.GenericAPIServer
	// contains filtered or unexported fields
}

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

func New

func New(c *Config) (*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:

KubeletClient

func (*Master) GetRESTOptionsOrDie

func (m *Master) GetRESTOptionsOrDie(c *Config, resource unversioned.GroupResource) generic.RESTOptions

func (*Master) HasThirdPartyResource

func (m *Master) HasThirdPartyResource(rsrc *extensions.ThirdPartyResource) (bool, error)

HasThirdPartyResource returns true if a particular third party resource currently installed.

func (*Master) InstallAPIs

func (m *Master) InstallAPIs(c *Config)

func (*Master) InstallThirdPartyResource

func (m *Master) InstallThirdPartyResource(rsrc *extensions.ThirdPartyResource) error

InstallThirdPartyResource installs a third party resource specified by 'rsrc'. When a resource is installed a corresponding RESTful resource is added as a valid path in the web service provided by the master.

For example, if you install a resource ThirdPartyResource{ Name: "foo.company.com", Versions: {"v1"} } then the following RESTful resource is created on the server:

http://<host>/apis/company.com/v1/foos/...

func (*Master) IsTunnelSyncHealthy

func (m *Master) IsTunnelSyncHealthy(req *http.Request) error

func (*Master) ListThirdPartyResources

func (m *Master) ListThirdPartyResources() []string

ListThirdPartyResources lists all currently installed third party resources

func (*Master) NewBootstrapController

func (m *Master) NewBootstrapController(endpointReconcilerConfig EndpointReconcilerConfig) *Controller

NewBootstrapController returns a controller for watching the core capabilities of the master. If endpointReconcilerConfig.Interval is 0, the default value of DefaultEndpointReconcilerInterval will be used instead. If endpointReconcilerConfig.Reconciler is nil, the default MasterCountEndpointReconciler will be used.

func (*Master) RemoveThirdPartyResource

func (m *Master) RemoveThirdPartyResource(path string) error

RemoveThirdPartyResource removes all resources matching `path`. Also deletes any stored data

type ThirdPartyController

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

ThirdPartyController is a control loop that knows how to synchronize ThirdPartyResource objects with RESTful resources which are present in the API server.

func (*ThirdPartyController) SyncOneResource

func (t *ThirdPartyController) SyncOneResource(rsrc *expapi.ThirdPartyResource) error

Synchronize a single resource with RESTful resources on the master

func (*ThirdPartyController) SyncResources

func (t *ThirdPartyController) SyncResources() error

Synchronize all resources with RESTful resources on the master