controlplane

Documentation

Overview

Package controlplane contains code for setting up and running a Kubernetes cluster control plane API server.

Index

• Constants
• Variables
• func DefaultAPIResourceConfigSource() *serverstorage.ResourceConfig
• type CompletedConfig
  • func (c CompletedConfig) New(delegationTarget genericapiserver.DelegationTarget) (*Instance, error)
• type Config
  • func (c *Config) Complete() CompletedConfig
• type EndpointReconcilerConfig
• type ExtraConfig
• type Instance
  • func (m *Instance) InstallAPIs(apiResourceConfigSource serverstorage.APIResourceConfigSource, ...) error
• 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
	// IdentityLeaseComponentLabelKey is used to apply a component label to identity lease objects, indicating:
	//   1. the lease is an identity lease (different from leader election leases)
	//   2. which component owns this lease
	IdentityLeaseComponentLabelKey = "apiserver.kubernetes.io/identity"
	// KubeAPIServer defines variable used internally when referring to kube-apiserver component
	KubeAPIServer = "kube-apiserver"
	// KubeAPIServerIdentityLeaseLabelSelector selects kube-apiserver identity leases
	KubeAPIServerIdentityLeaseLabelSelector = IdentityLeaseComponentLabelKey + "=" + KubeAPIServer
)

Variables

var (
	// IdentityLeaseGCPeriod is the interval which the lease GC controller checks for expired leases
	// IdentityLeaseGCPeriod is exposed so integration tests can tune this value.
	IdentityLeaseGCPeriod = 3600 * time.Second
	// IdentityLeaseDurationSeconds is the duration of kube-apiserver lease in seconds
	// IdentityLeaseDurationSeconds is exposed so integration tests can tune this value.
	IdentityLeaseDurationSeconds = 3600
	// IdentityLeaseRenewIntervalSeconds is the interval of kube-apiserver renewing its lease in seconds
	// IdentityLeaseRenewIntervalSeconds is exposed so integration tests can tune this value.
	IdentityLeaseRenewIntervalPeriod = 10 * time.Second
)

Functions

func DefaultAPIResourceConfigSource

func DefaultAPIResourceConfigSource() *serverstorage.ResourceConfig

DefaultAPIResourceConfigSource returns default configuration for an APIResource.

Types

type CompletedConfig

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

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

func (CompletedConfig) New

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

type Config

type Config struct {
	GenericConfig *genericapiserver.Config
	ExtraConfig   ExtraConfig
}

Config defines configuration for the master

func (*Config) Complete

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 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 {
	ClusterAuthenticationInfo clusterauthenticationtrust.ClusterAuthenticationInfo

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

	EnableLogsSupport bool
	ProxyTransport    *http.Transport

	// PeerProxy, if not nil, sets proxy transport between kube-apiserver peers for requests
	// that can not be served locally
	PeerProxy utilpeerproxy.Interface

	// PeerEndpointLeaseReconciler updates the peer endpoint leases
	PeerEndpointLeaseReconciler peerreconcilers.PeerEndpointLeaseReconciler

	// PeerCAFile is the ca bundle used by this kube-apiserver to verify peer apiservers'
	// serving certs when routing a request to the peer in the case the request can not be served
	// locally due to version skew.
	PeerCAFile string

	// PeerAdvertiseAddress is the IP for this kube-apiserver which is used by peer apiservers to route a request
	// to this apiserver. This happens in cases where the peer is not able to serve the request due to
	// version skew. If unset, AdvertiseAddress/BindAddress will be used.
	PeerAdvertiseAddress peerreconcilers.PeerAdvertiseAddress

	// 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
	// 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

	// RepairServicesInterval interval used by the repair loops for
	// the Services NodePort and ClusterIP resources
	RepairServicesInterval time.Duration
}

ExtraConfig defines extra configuration for the master

type Instance

type Instance struct {
	GenericAPIServer *genericapiserver.GenericAPIServer

	ClusterAuthenticationInfo clusterauthenticationtrust.ClusterAuthenticationInfo
}

Instance contains state for a Kubernetes cluster api server instance.

func (*Instance) InstallAPIs

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

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

type RESTStorageProvider

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

RESTStorageProvider is a factory type for REST storage.