certificate

Documentation

Index

• Constants
• type Manager
  • func NewManager(client client.Client, options Options) (*Manager, error)
  • func (m *Manager) Add(mgr manager.Manager) error
  • func (m *Manager) CABundle() ([]byte, error)
  • func (m *Manager) Reconcile(request reconcile.Request) (reconcile.Result, error)
• type Options
• type WebhookType

Constants

const (
	CACertKey       = "ca.crt"
	CAPrivateKeyKey = "ca.key"
)

Types

type Manager

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

Manager do the CA and service certificate/key generation and expiration handling. It will generate one CA for the webhook configuration and a secret per Service referenced on it. One unique instance has to run at at cluster to monitor expiration time and do rotations.

func NewManager

func NewManager(
	client client.Client,
	options Options,
) (*Manager, error)

NewManager with create a certManager that generated a secret per service at the webhook TLS http server. It will also starts at cert manager [1] that will update them if they expire. The generate certificate include the following fields: DNSNames (for every service the webhook refers too):

• ${service.Name}
• ${service.Name}.${service.namespace}
• ${service.Name}.${service.namespace}.svc

Subject:

• CN: ${webhookName}

Usages:

• UsageDigitalSignature
• UsageKeyEncipherment
• UsageServerAuth

It will also update the webhook caBundle field with the cluster CA cert and approve the generated cert/key with k8s certification approval mechanism

func (*Manager) Add

func (m *Manager) Add(mgr manager.Manager) error

Add creates a new Node Controller and adds it to the Manager. The Manager will set fields on the Controller and Start it when the Manager is Started.

func (*Manager) CABundle

func (m *Manager) CABundle() ([]byte, error)

func (*Manager) Reconcile

func (m *Manager) Reconcile(request reconcile.Request) (reconcile.Result, error)

Reconcile reads that state of the cluster for a Node object and makes changes based on the state read and what is in the Node.Spec Note: The Controller will requeue the Request to be processed again if the returned error is non-nil or Result.Requeue is true, otherwise upon completion it will remove the work from the queue.

type Options

type Options struct {

	// webhookName The Mutating or Validating Webhook configuration name
	WebhookName string

	// webhookType The Mutating or Validating Webhook configuration type
	WebhookType WebhookType

	// The namespace where ca secret will be created or service secrets
	// for ClientConfig that has URL instead of ServiceRef
	Namespace string

	// CARotateInterval configurated duration for CA and certificate
	CARotateInterval time.Duration

	// CAOverlapInterval the duration of CA Certificates at CABundle if
	// not set it will default to CARotateInterval
	CAOverlapInterval time.Duration

	// CertRotateInterval configurated duration for of service certificate
	// the the webhook configuration is referencing different services all
	// of them will share the same duration
	CertRotateInterval time.Duration

	// CertOverlapInterval the duration of service certificates at bundle if
	// not set it will default to CertRotateInterval
	CertOverlapInterval time.Duration
}

type WebhookType

type WebhookType string

const (
	MutatingWebhook   WebhookType = "Mutating"
	ValidatingWebhook WebhookType = "Validating"
	OneYearDuration               = 365 * 24 * time.Hour
)