util

Documentation

Index

• Constants
• func BearerToken(d *kubeadmapi.TokenDiscovery) string
• func CheckErr(err error)
• func DiscoveryPort(d *kubeadmapi.TokenDiscovery) int32
• func GenerateToken(d *kubeadmapi.TokenDiscovery) error
• func KubernetesReleaseVersion(version string) (string, error)
• func ParseToken(s string) (string, string, error)
• func ParseTokenID(s string) error
• func UpdateOrCreateToken(client *clientset.Clientset, d *kubeadmapi.TokenDiscovery, ...) error
• func ValidateToken(d *kubeadmapi.TokenDiscovery) (bool, error)

Constants

const (
	DefaultErrorExitCode = 1
	PreFlightExitCode    = 2
)

const (
	TokenIDBytes               = 3
	TokenSecretBytes           = 8
	BootstrapTokenSecretPrefix = "bootstrap-token-"
	DefaultTokenDuration       = time.Duration(8) * time.Hour
)

Functions

func BearerToken

func BearerToken(d *kubeadmapi.TokenDiscovery) string

BearerToken returns a string representation of the passed token.

func CheckErr

func CheckErr(err error)

CheckErr prints a user friendly error to STDERR and exits with a non-zero exit code. Unrecognized errors will be printed with an "error: " prefix.

This method is generic to the command in use and may be used by non-Kubectl commands.

func DiscoveryPort

func DiscoveryPort(d *kubeadmapi.TokenDiscovery) int32

func GenerateToken

func GenerateToken(d *kubeadmapi.TokenDiscovery) error

GenerateToken generates a new token with a token ID that is valid as a Kubernetes DNS label. For more info, see kubernetes/pkg/util/validation/validation.go.

func KubernetesReleaseVersion

func KubernetesReleaseVersion(version string) (string, error)

KubernetesReleaseVersion is helper function that can fetch available version information from release servers based on label names, like "stable" or "latest".

If argument is already semantic version string, it will return same string.

In case of labels, it tries to fetch from release servers and then return actual semantic version.

Available names on release servers:

stable      (latest stable release)
stable-1    (latest stable release in 1.x)
stable-1.0  (and similarly 1.1, 1.2, 1.3, ...)
latest      (latest release, including alpha/beta)
latest-1    (latest release in 1.x, including alpha/beta)
latest-1.0  (and similarly 1.1, 1.2, 1.3, ...)

func ParseToken

func ParseToken(s string) (string, string, error)

ParseToken tries and parse a valid token from a string. A token ID and token secret are returned in case of success, an error otherwise.

func ParseTokenID

func ParseTokenID(s string) error

ParseTokenID tries and parse a valid token ID from a string. An error is returned in case of failure.

func UpdateOrCreateToken

func UpdateOrCreateToken(client *clientset.Clientset, d *kubeadmapi.TokenDiscovery, tokenDuration time.Duration) error

UpdateOrCreateToken attempts to update a token with the given ID, or create if it does not already exist.

func ValidateToken

func ValidateToken(d *kubeadmapi.TokenDiscovery) (bool, error)

ValidateToken validates whether a token is well-formed. In case it's not, the corresponding error is returned as well.