kubeletdnatcontroller

Documentation

Overview

Package kubeletdnatcontroller contains the kubeletdnat controller which:

• Is needed for all controlplane components running in the seed that need to reach nodes
• Is not needed if reaching the pods is sufficient
• Must be used in conjunction with the openvpn client
• Creates NAT rules for both the public and private node IP that tunnels access to them via the VPN
• Its counterpart runs within the openvpn client pod in the usercluster, is part of the openvpn addon and written in bash

Index

• Constants
• func Add(mgr manager.Manager, nodeTranslationChainName string, nodeAccessNetwork net.IP, ...) error
• type Reconciler
  • func (r *Reconciler) Reconcile(ctx context.Context, request reconcile.Request) (reconcile.Result, error)

Constants

const (
	ControllerName = "kkp-kubeletdnat-controller"
)

Functions

func Add

func Add(
	mgr manager.Manager,
	nodeTranslationChainName string,
	nodeAccessNetwork net.IP,
	log *zap.SugaredLogger,
	vpnInterface string,
) error

NewController creates a new controller for the specified data.

Types

type Reconciler

type Reconciler struct {
	ctrlruntimeclient.Client
	// contains filtered or unexported fields
}

Reconciler updates iptable rules to match node addresses. Every node address gets a translation to the respective node-access (vpn) address.

func (*Reconciler) Reconcile

func (r *Reconciler) Reconcile(ctx context.Context, request reconcile.Request) (reconcile.Result, error)