serviceaccount

Documentation

Overview

Package serviceaccount provides implementations to manage service accounts and service account tokens

Index

• Constants
• func IsServiceAccountToken(secret *api.Secret, sa *api.ServiceAccount) bool
• func JWTTokenAuthenticator(keys []*rsa.PublicKey, lookup bool, getter ServiceAccountTokenGetter) authenticator.Token
• func MakeGroupNames(namespace, name string) []string
• func MakeNamespaceGroupName(namespace string) string
• func MakeUsername(namespace, name string) string
• func ReadPrivateKey(file string) (*rsa.PrivateKey, error)
• func ReadPublicKey(file string) (*rsa.PublicKey, error)
• func SplitUsername(username string) (string, string, error)
• func UserInfo(namespace, name, uid string) user.Info
• type ServiceAccountTokenGetter
  • func NewGetterFromClient(c client.Interface) ServiceAccountTokenGetter
  • func NewGetterFromRegistries(serviceAccounts serviceaccount.Registry, secrets secret.Registry) ServiceAccountTokenGetter
  • func NewGetterFromStorageInterface(storage storage.Interface) ServiceAccountTokenGetter
• type ServiceAccountsController
  • func NewServiceAccountsController(cl client.Interface, options ServiceAccountsControllerOptions) *ServiceAccountsController
  • func (e *ServiceAccountsController) Run()
  • func (e *ServiceAccountsController) Stop()
• type ServiceAccountsControllerOptions
  • func DefaultServiceAccountsControllerOptions() ServiceAccountsControllerOptions
• type TokenGenerator
  • func JWTTokenGenerator(key *rsa.PrivateKey) TokenGenerator
• type TokensController
  • func NewTokensController(cl client.Interface, options TokensControllerOptions) *TokensController
  • func (e *TokensController) Run()
  • func (e *TokensController) Stop()
• type TokensControllerOptions

Constants

const (
	Issuer = "kubernetes/serviceaccount"

	SubjectClaim            = "sub"
	IssuerClaim             = "iss"
	ServiceAccountNameClaim = "kubernetes.io/serviceaccount/service-account.name"
	ServiceAccountUIDClaim  = "kubernetes.io/serviceaccount/service-account.uid"
	SecretNameClaim         = "kubernetes.io/serviceaccount/secret.name"
	NamespaceClaim          = "kubernetes.io/serviceaccount/namespace"
)

const (
	ServiceAccountUsernamePrefix    = "system:serviceaccount:"
	ServiceAccountUsernameSeparator = ":"
	ServiceAccountGroupPrefix       = "system:serviceaccounts:"
	AllServiceAccountsGroup         = "system:serviceaccounts"
)

const NumServiceAccountRemoveReferenceRetries = 10

Functions

func IsServiceAccountToken

func IsServiceAccountToken(secret *api.Secret, sa *api.ServiceAccount) bool

IsServiceAccountToken returns true if the secret is a valid api token for the service account

func JWTTokenAuthenticator

func JWTTokenAuthenticator(keys []*rsa.PublicKey, lookup bool, getter ServiceAccountTokenGetter) authenticator.Token

JWTTokenAuthenticator authenticates tokens as JWT tokens produced by JWTTokenGenerator Token signatures are verified using each of the given public keys until one works (allowing key rotation) If lookup is true, the service account and secret referenced as claims inside the token are retrieved and verified with the provided ServiceAccountTokenGetter

func MakeGroupNames

func MakeGroupNames(namespace, name string) []string

MakeGroupNames generates service account group names for the given namespace and ServiceAccount name

func MakeNamespaceGroupName

func MakeNamespaceGroupName(namespace string) string

MakeNamespaceGroupName returns the name of the group all service accounts in the namespace are included in

func MakeUsername

func MakeUsername(namespace, name string) string

MakeUsername generates a username from the given namespace and ServiceAccount name. The resulting username can be passed to SplitUsername to extract the original namespace and ServiceAccount name.

func ReadPrivateKey

func ReadPrivateKey(file string) (*rsa.PrivateKey, error)

ReadPrivateKey is a helper function for reading an rsa.PrivateKey from a PEM-encoded file

func ReadPublicKey

func ReadPublicKey(file string) (*rsa.PublicKey, error)

ReadPublicKey is a helper function for reading an rsa.PublicKey from a PEM-encoded file Reads public keys from both public and private key files

func SplitUsername

func SplitUsername(username string) (string, string, error)

SplitUsername returns the namespace and ServiceAccount name embedded in the given username, or an error if the username is not a valid name produced by MakeUsername

func UserInfo

func UserInfo(namespace, name, uid string) user.Info

UserInfo returns a user.Info interface for the given namespace, service account name and UID

Types

type ServiceAccountTokenGetter

type ServiceAccountTokenGetter interface {
	GetServiceAccount(namespace, name string) (*api.ServiceAccount, error)
	GetSecret(namespace, name string) (*api.Secret, error)
}

ServiceAccountTokenGetter defines functions to retrieve a named service account and secret

func NewGetterFromClient

func NewGetterFromClient(c client.Interface) ServiceAccountTokenGetter

NewGetterFromClient returns a ServiceAccountTokenGetter that uses the specified client to retrieve service accounts and secrets. The client should NOT authenticate using a service account token the returned getter will be used to retrieve, or recursion will result.

func NewGetterFromRegistries

func NewGetterFromRegistries(serviceAccounts serviceaccount.Registry, secrets secret.Registry) ServiceAccountTokenGetter

NewGetterFromRegistries returns a ServiceAccountTokenGetter that uses the specified registries to retrieve service accounts and secrets.

func NewGetterFromStorageInterface

func NewGetterFromStorageInterface(storage storage.Interface) ServiceAccountTokenGetter

NewGetterFromStorageInterface returns a ServiceAccountTokenGetter that uses the specified storage to retrieve service accounts and secrets.

type ServiceAccountsController

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

ServiceAccountsController manages ServiceAccount objects inside Namespaces

func NewServiceAccountsController

func NewServiceAccountsController(cl client.Interface, options ServiceAccountsControllerOptions) *ServiceAccountsController

NewServiceAccountsController returns a new *ServiceAccountsController.

func (*ServiceAccountsController) Run

func (e *ServiceAccountsController) Run()

Runs controller loops and returns immediately

func (*ServiceAccountsController) Stop

func (e *ServiceAccountsController) Stop()

Stop gracefully shuts down this controller

type ServiceAccountsControllerOptions

type ServiceAccountsControllerOptions struct {
	// Names is the set of service account names to ensure exist in every namespace
	Names sets.String

	// ServiceAccountResync is the interval between full resyncs of ServiceAccounts.
	// If non-zero, all service accounts will be re-listed this often.
	// Otherwise, re-list will be delayed as long as possible (until the watch is closed or times out).
	ServiceAccountResync time.Duration

	// NamespaceResync is the interval between full resyncs of Namespaces.
	// If non-zero, all namespaces will be re-listed this often.
	// Otherwise, re-list will be delayed as long as possible (until the watch is closed or times out).
	NamespaceResync time.Duration
}

ServiceAccountsControllerOptions contains options for running a ServiceAccountsController

func DefaultServiceAccountsControllerOptions

func DefaultServiceAccountsControllerOptions() ServiceAccountsControllerOptions

type TokenGenerator

type TokenGenerator interface {
	// GenerateToken generates a token which will identify the given ServiceAccount.
	// The returned token will be stored in the given (and yet-unpersisted) Secret.
	GenerateToken(serviceAccount api.ServiceAccount, secret api.Secret) (string, error)
}

func JWTTokenGenerator

func JWTTokenGenerator(key *rsa.PrivateKey) TokenGenerator

JWTTokenGenerator returns a TokenGenerator that generates signed JWT tokens, using the given privateKey. privateKey is a PEM-encoded byte array of a private RSA key. JWTTokenAuthenticator()

type TokensController

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

TokensController manages ServiceAccountToken secrets for ServiceAccount objects

func NewTokensController

func NewTokensController(cl client.Interface, options TokensControllerOptions) *TokensController

NewTokensController returns a new *TokensController.

func (*TokensController) Run

func (e *TokensController) Run()

Runs controller loops and returns immediately

func (*TokensController) Stop

func (e *TokensController) Stop()

Stop gracefully shuts down this controller

type TokensControllerOptions

type TokensControllerOptions struct {
	// TokenGenerator is the generator to use to create new tokens
	TokenGenerator TokenGenerator
	// ServiceAccountResync is the time.Duration at which to fully re-list service accounts.
	// If zero, re-list will be delayed as long as possible
	ServiceAccountResync time.Duration
	// SecretResync is the time.Duration at which to fully re-list secrets.
	// If zero, re-list will be delayed as long as possible
	SecretResync time.Duration
	// This CA will be added in the secretes of service accounts
	RootCA []byte
}

TokensControllerOptions contains options for the TokensController