util

Documentation

Index

• Constants
• func BuildBootstrapperName(name string) string
• func ComputeGardenletKubeconfigWithBootstrapToken(ctx context.Context, gardenClient client.Client, ...) ([]byte, error)
• func ComputeGardenletKubeconfigWithServiceAccountToken(ctx context.Context, gardenClient client.Client, ...) ([]byte, error)
• func CreateGardenletKubeconfigWithClientCertificate(config *rest.Config, privateKeyData, certDat []byte) ([]byte, error)
• func CreateGardenletKubeconfigWithToken(config *rest.Config, token string) ([]byte, error)
• func DigestedName(publicKey interface{}, subject *pkix.Name, usages []certificatesv1.KeyUsage) (string, error)
• func GetKubeconfigFromSecret(ctx context.Context, seedClient client.Client, namespace, name string) ([]byte, error)
• func GetSeedName(seedConfig *config.SeedConfig) string
• func GetTargetClusterName(config *config.SeedClientConnection) string
• func UpdateGardenKubeconfigSecret(ctx context.Context, certClientConfig *rest.Config, ...) ([]byte, error)

Constants

const (
	// GardenerSeedBootstrapper is a constant for the gardener seed bootstrapper name.
	GardenerSeedBootstrapper = "gardener.cloud:system:seed-bootstrapper"
	// DedicatedSeedKubeconfig is a constant for the target cluster name when the gardenlet is using a dedicated seed kubeconfig
	DedicatedSeedKubeconfig = "configured in .SeedClientConnection.Kubeconfig"
	// InCluster is a constant for the target cluster name  when the gardenlet is running in a Kubernetes cluster
	// and is using the mounted service account token of that cluster
	InCluster = "in cluster"
)

Functions

func BuildBootstrapperName

func BuildBootstrapperName(name string) string

BuildBootstrapperName concatenates the gardener seed bootstrapper group with the given name, separated by a colon.

func ComputeGardenletKubeconfigWithBootstrapToken

func ComputeGardenletKubeconfigWithBootstrapToken(ctx context.Context, gardenClient client.Client, gardenClientRestConfig *rest.Config, tokenID, description string, validity time.Duration) ([]byte, error)

ComputeGardenletKubeconfigWithBootstrapToken creates a kubeconfig containing a valid bootstrap token as client credentials Creates the required bootstrap token secret in the Garden cluster and puts it into a Kubeconfig tailored to the Gardenlet

func ComputeGardenletKubeconfigWithServiceAccountToken

func ComputeGardenletKubeconfigWithServiceAccountToken(ctx context.Context, gardenClient client.Client, gardenClientRestConfig *rest.Config, serviceAccountName string) ([]byte, error)

ComputeGardenletKubeconfigWithServiceAccountToken creates a kubeconfig containing the token of a service account Creates the required service account in the Garden cluster and puts the associated token into a Kubeconfig tailored to the Gardenlet

func CreateGardenletKubeconfigWithClientCertificate

func CreateGardenletKubeconfigWithClientCertificate(config *rest.Config, privateKeyData, certDat []byte) ([]byte, error)

CreateGardenletKubeconfigWithClientCertificate creates a kubeconfig for the Gardenlet with the given client certificate.

func CreateGardenletKubeconfigWithToken

func CreateGardenletKubeconfigWithToken(config *rest.Config, token string) ([]byte, error)

CreateGardenletKubeconfigWithToken creates a kubeconfig for the Gardenlet with the given bootstrap token.

func DigestedName

func DigestedName(publicKey interface{}, subject *pkix.Name, usages []certificatesv1.KeyUsage) (string, error)

DigestedName is a digest that should include all the relevant pieces of the CSR we care about. We can't directly hash the serialized CSR because of random padding that we regenerate every loop and we include usages which are not contained in the CSR. This needs to be kept up to date as we add new fields to the node certificates and with ensureCompatible.

func GetKubeconfigFromSecret

func GetKubeconfigFromSecret(ctx context.Context, seedClient client.Client, namespace, name string) ([]byte, error)

GetKubeconfigFromSecret tries to retrieve the kubeconfig bytes using the given client returns the kubeconfig or nil if it cannot be found

func GetSeedName

func GetSeedName(seedConfig *config.SeedConfig) string

GetSeedName returns the seed name from the SeedConfig or the default Seed name

func GetTargetClusterName

func GetTargetClusterName(config *config.SeedClientConnection) string

GetTargetClusterName returns the target cluster of the gardenlet based on the SeedClientConnection. This is either the cluster configured by .SeedClientConnection.Kubeconfig, or when running in Kubernetes, the local cluster it is deployed to (by using a mounted service account token)

func UpdateGardenKubeconfigSecret

func UpdateGardenKubeconfigSecret(ctx context.Context, certClientConfig *rest.Config, certData, privateKeyData []byte, seedClient client.Client, gardenClientConnection *config.GardenClientConnection) ([]byte, error)

UpdateGardenKubeconfigSecret updates the secret in the seed cluster that holds the kubeconfig of the Garden cluster.