secret

Documentation

Overview

Package secret implements utilities for secret handling.

Index

• Constants
• Variables
• func Get(ctx context.Context, c client.Reader, cluster client.ObjectKey, ...) (*corev1.Secret, error)
• func GetFromNamespacedName(ctx context.Context, c client.Reader, clusterName client.ObjectKey, ...) (*corev1.Secret, error)
• func Name(cluster string, suffix Purpose) string
• type Certificate
  • func (c *Certificate) AsFiles() []bootstrapv1.File
  • func (c *Certificate) AsSecret(clusterName client.ObjectKey, owner metav1.OwnerReference) *corev1.Secret
  • func (c *Certificate) Generate() error
  • func (c *Certificate) Hashes() ([]string, error)
• type Certificates
  • func NewCertificatesForInitialControlPlane(config *bootstrapv1.ClusterConfiguration) Certificates
  • func NewCertificatesForWorker(caCertPath string) Certificates
  • func NewControlPlaneJoinCerts(config *bootstrapv1.ClusterConfiguration) Certificates
  • func (c Certificates) AsFiles() []bootstrapv1.File
  • func (c Certificates) EnsureAllExist() error
  • func (c Certificates) Generate() error
  • func (c Certificates) GetByPurpose(purpose Purpose) *Certificate
  • func (c Certificates) Lookup(ctx context.Context, ctrlclient client.Client, clusterName client.ObjectKey) error
  • func (c Certificates) LookupCached(ctx context.Context, secretCachingClient, ctrlclient client.Client, ...) error
  • func (c Certificates) LookupOrGenerate(ctx context.Context, ctrlclient client.Client, clusterName client.ObjectKey, ...) error
  • func (c Certificates) LookupOrGenerateCached(ctx context.Context, secretCachingClient, ctrlclient client.Client, ...) error
  • func (c Certificates) SaveGenerated(ctx context.Context, ctrlclient client.Client, clusterName client.ObjectKey, ...) error
• type Purpose
  • func ParseSecretName(name string) (string, Purpose, error)

Constants

const (
	// KubeconfigDataName is the key used to store a Kubeconfig in the secret's data field.
	KubeconfigDataName = "value"

	// TLSKeyDataName is the key used to store a TLS private key in the secret's data field.
	TLSKeyDataName = "tls.key"

	// TLSCrtDataName is the key used to store a TLS certificate in the secret's data field.
	TLSCrtDataName = "tls.crt"
)

const (
	// Kubeconfig is the secret name suffix storing the Cluster Kubeconfig.
	Kubeconfig = Purpose("kubeconfig")

	// ClusterCA is the secret name suffix for APIServer CA.
	ClusterCA = Purpose("ca")

	// EtcdCA is the secret name suffix for the Etcd CA.
	EtcdCA = Purpose("etcd")

	// ServiceAccount is the secret name suffix for the Service Account keys.
	ServiceAccount = Purpose("sa")

	// FrontProxyCA is the secret name suffix for Front Proxy CA.
	FrontProxyCA = Purpose("proxy")

	// APIServerEtcdClient is the secret name of user-supplied secret containing the apiserver-etcd-client key/cert.
	APIServerEtcdClient = Purpose("apiserver-etcd-client")
)

const (

	// DefaultCertificatesDir is the default directory where Kubernetes stores its PKI information.
	DefaultCertificatesDir = "/etc/kubernetes/pki"
)

Variables

var (
	// ErrMissingCertificate is an error indicating a certificate is entirely missing.
	ErrMissingCertificate = errors.New("missing certificate")

	// ErrMissingCrt is an error indicating the crt file is missing from the certificate.
	ErrMissingCrt = errors.New("missing crt data")

	// ErrMissingKey is an error indicating the key file is missing from the certificate.
	ErrMissingKey = errors.New("missing key data")
)

Functions

func Get

func Get(ctx context.Context, c client.Reader, cluster client.ObjectKey, purpose Purpose) (*corev1.Secret, error)

Get retrieves the specified Secret (if any) from the given cluster name and namespace.

func GetFromNamespacedName

func GetFromNamespacedName(ctx context.Context, c client.Reader, clusterName client.ObjectKey, purpose Purpose) (*corev1.Secret, error)

GetFromNamespacedName retrieves the specified Secret (if any) from the given cluster name and namespace.

func Name

func Name(cluster string, suffix Purpose) string

Name returns the name of the secret for a cluster.

Types

type Certificate

type Certificate struct {
	Generated         bool
	External          bool
	Purpose           Purpose
	KeyPair           *certs.KeyPair
	CertFile, KeyFile string
	Secret            *corev1.Secret
}

Certificate represents a single certificate CA.

func (*Certificate) AsFiles

func (c *Certificate) AsFiles() []bootstrapv1.File

AsFiles converts the certificate to a slice of Files that may have 0, 1 or 2 Files.

func (*Certificate) AsSecret

func (c *Certificate) AsSecret(clusterName client.ObjectKey, owner metav1.OwnerReference) *corev1.Secret

AsSecret converts a single certificate into a Kubernetes secret.

func (*Certificate) Generate

func (c *Certificate) Generate() error

Generate generates a certificate.

func (*Certificate) Hashes

func (c *Certificate) Hashes() ([]string, error)

Hashes hashes all the certificates stored in a CA certificate.

type Certificates

type Certificates []*Certificate

Certificates are the certificates necessary to bootstrap a cluster.

func NewCertificatesForInitialControlPlane

func NewCertificatesForInitialControlPlane(config *bootstrapv1.ClusterConfiguration) Certificates

NewCertificatesForInitialControlPlane returns a list of certificates configured for a control plane node.

func NewCertificatesForWorker

func NewCertificatesForWorker(caCertPath string) Certificates

NewCertificatesForWorker return an initialized but empty set of CA certificates needed to bootstrap a cluster.

func NewControlPlaneJoinCerts

func NewControlPlaneJoinCerts(config *bootstrapv1.ClusterConfiguration) Certificates

NewControlPlaneJoinCerts gets any certs that exist and writes them to disk.

func (Certificates) AsFiles

func (c Certificates) AsFiles() []bootstrapv1.File

AsFiles converts a slice of certificates into bootstrap files.

func (Certificates) EnsureAllExist

func (c Certificates) EnsureAllExist() error

EnsureAllExist ensure that there is some data present for every certificate.

func (Certificates) Generate

func (c Certificates) Generate() error

Generate will generate any certificates that do not have KeyPair data.

func (Certificates) GetByPurpose

func (c Certificates) GetByPurpose(purpose Purpose) *Certificate

GetByPurpose returns a certificate by the given name. This could be removed if we use a map instead of a slice to hold certificates, however other code becomes more complex.

func (Certificates) Lookup

func (c Certificates) Lookup(ctx context.Context, ctrlclient client.Client, clusterName client.ObjectKey) error

Lookup looks up each certificate from secrets and populates the certificate with the secret data.

func (Certificates) LookupCached

func (c Certificates) LookupCached(ctx context.Context, secretCachingClient, ctrlclient client.Client, clusterName client.ObjectKey) error

LookupCached looks up each certificate from secrets and populates the certificate with the secret data. First we try to lookup the certificate secret via the secretCachingClient. If we get a NotFound error we fall back to the regular uncached client.

func (Certificates) LookupOrGenerate

func (c Certificates) LookupOrGenerate(ctx context.Context, ctrlclient client.Client, clusterName client.ObjectKey, owner metav1.OwnerReference) error

LookupOrGenerate is a convenience function that wraps cluster bootstrap certificate behavior.

func (Certificates) LookupOrGenerateCached

func (c Certificates) LookupOrGenerateCached(ctx context.Context, secretCachingClient, ctrlclient client.Client, clusterName client.ObjectKey, owner metav1.OwnerReference) error

LookupOrGenerateCached is a convenience function that wraps cluster bootstrap certificate behavior. During lookup we first try to lookup the certificate secret via the secretCachingClient. If we get a NotFound error we fall back to the regular uncached client.

func (Certificates) SaveGenerated

func (c Certificates) SaveGenerated(ctx context.Context, ctrlclient client.Client, clusterName client.ObjectKey, owner metav1.OwnerReference) error

SaveGenerated will save any certificates that have been generated as Kubernetes secrets.

type Purpose

type Purpose string

Purpose is the name to append to the secret generated for a cluster.

func ParseSecretName

func ParseSecretName(name string) (string, Purpose, error)

ParseSecretName return the cluster name and the suffix Purpose in name is a valid cluster secret, otherwise it return error.