Deploy Konnectivity

CHANGELOG.md

@@ -34,6 +34,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - GCP: Support for higher end N2D standard (128 & 224 vCPUs), *high-mem* and *high-cpu* VMs
 - Add `constellation upgrade` to update node images in Constellation.
 - Add cilium v1.12.1 with strict mode v2
+- Konnectivity is now deployed for secure API server to node/pod/service communication.
 
 ### Changed
 <!-- For changes in existing functionality.  -->

bootstrapper/cmd/bootstrapper/main.go

@@ -11,7 +11,6 @@ import (
 	"encoding/json"
 	"flag"
 	"io"
-	"net"
 	"os"
 	"strconv"
 
@@ -34,10 +33,8 @@ import (
 	"github.com/edgelesssys/constellation/internal/cloud/vmtype"
 	"github.com/edgelesssys/constellation/internal/constants"
 	"github.com/edgelesssys/constellation/internal/file"
-	"github.com/edgelesssys/constellation/internal/iproute"
 	"github.com/edgelesssys/constellation/internal/logger"
 	"github.com/edgelesssys/constellation/internal/oid"
-	"github.com/edgelesssys/constellation/internal/role"
 	"github.com/spf13/afero"
 	"go.uber.org/zap"
 )
@@ -107,9 +104,6 @@ func main() {
 		)
 		openTPM = vtpm.OpenVTPM
 		fs = afero.NewOsFs()
-		if err := setLoadbalancerRoute(ctx, metadata); err != nil {
-			log.With(zap.Error(err)).Fatalf("Failed to set loadbalancer route")
-		}
 		log.Infof("Added load balancer IP to routing table")
 	case cloudprovider.Azure:
 		pcrs, err := vtpm.GetSelectedPCRs(vtpm.OpenVTPM, vtpm.AzurePCRSelection)
@@ -181,22 +175,3 @@ func main() {
 
 	run(issuer, openTPM, fileHandler, clusterInitJoiner, metadataAPI, bindIP, bindPort, log, cloudLogger)
 }
-
-func setLoadbalancerRoute(ctx context.Context, meta metadataAPI) error {
-	self, err := meta.Self(ctx)
-	if err != nil {
-		return err
-	}
-	if self.Role != role.ControlPlane {
-		return nil
-	}
-	endpoint, err := meta.GetLoadBalancerEndpoint(ctx)
-	if err != nil {
-		return err
-	}
-	ip, _, err := net.SplitHostPort(endpoint)
-	if err != nil {
-		return err
-	}
-	return iproute.AddToLocalRoutingTable(ctx, ip)
-}

bootstrapper/internal/certificate/certificate.go

@@ -0,0 +1,37 @@
+/*
+Copyright (c) Edgeless Systems GmbH
+
+SPDX-License-Identifier: AGPL-3.0-only
+*/
+
+package certificate
+
+import (
+	"crypto/ecdsa"
+	"crypto/elliptic"
+	"crypto/rand"
+	"crypto/x509"
+	"encoding/pem"
+)
+
+// GetCertificateRequest returns a certificate request and matching private key.
+func GetCertificateRequest(csrTemplate *x509.CertificateRequest) (certificateRequest []byte, privateKey []byte, err error) {
+	privK, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
+	if err != nil {
+		return nil, nil, err
+	}
+	keyBytes, err := x509.MarshalECPrivateKey(privK)
+	if err != nil {
+		return nil, nil, err
+	}
+	keyPem := pem.EncodeToMemory(&pem.Block{
+		Type:  "EC PRIVATE KEY",
+		Bytes: keyBytes,
+	})
+	certificateRequest, err = x509.CreateCertificateRequest(rand.Reader, csrTemplate, privK)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	return certificateRequest, keyPem, nil
+}

bootstrapper/internal/kubelet/kubelet.go

@@ -7,14 +7,11 @@ SPDX-License-Identifier: AGPL-3.0-only
 package kubelet
 
 import (
-	"crypto/ecdsa"
-	"crypto/elliptic"
-	"crypto/rand"
 	"crypto/x509"
 	"crypto/x509/pkix"
-	"encoding/pem"
 	"net"
 
+	"github.com/edgelesssys/constellation/bootstrapper/internal/certificate"
 	"k8s.io/kubernetes/cmd/kubeadm/app/constants"
 )
 
@@ -27,18 +24,6 @@ const (
 
 // GetCertificateRequest returns a certificate request and macthing private key for the kubelet.
 func GetCertificateRequest(nodeName string, ips []net.IP) (certificateRequest []byte, privateKey []byte, err error) {
-	privK, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
-	if err != nil {
-		return nil, nil, err
-	}
-	keyBytes, err := x509.MarshalECPrivateKey(privK)
-	if err != nil {
-		return nil, nil, err
-	}
-	kubeletKey := pem.EncodeToMemory(&pem.Block{
-		Type:  "EC PRIVATE KEY",
-		Bytes: keyBytes,
-	})
 	csrTemplate := &x509.CertificateRequest{
 		Subject: pkix.Name{
 			Organization: []string{constants.NodesGroup},
@@ -46,10 +31,5 @@ func GetCertificateRequest(nodeName string, ips []net.IP) (certificateRequest []
 		},
 		IPAddresses: ips,
 	}
-	certificateRequest, err = x509.CreateCertificateRequest(rand.Reader, csrTemplate, privK)
+	return certificate.GetCertificateRequest(csrTemplate)
-	if err != nil {
-		return nil, nil, err
-	}
-
-	return certificateRequest, kubeletKey, nil
 }

bootstrapper/internal/kubernetes/k8sapi/kubeadm_config.go

@@ -72,6 +72,7 @@ func (c *CoreOSConfiguration) InitConfiguration(externalCloudProvider bool, k8sV
 						"audit-log-maxbackup":         "10",                                     // CIS benchmark - Default value of Rancher
 						"audit-log-maxsize":           "100",                                    // CIS benchmark - Default value of Rancher
 						"profiling":                   "false",                                  // CIS benchmark
+						"egress-selector-config-file": "/etc/kubernetes/egress-selector-configuration.yaml",
 						"kubelet-certificate-authority": filepath.Join(
 							kubeconstants.KubernetesDir,
 							kubeconstants.DefaultCertificateDir,
@@ -101,6 +102,20 @@ func (c *CoreOSConfiguration) InitConfiguration(externalCloudProvider bool, k8sV
 							ReadOnly:  true,
 							PathType:  corev1.HostPathFile,
 						},
+						{
+							Name:      "egress-config",
+							HostPath:  "/etc/kubernetes/egress-selector-configuration.yaml",
+							MountPath: "/etc/kubernetes/egress-selector-configuration.yaml",
+							ReadOnly:  true,
+							PathType:  corev1.HostPathFile,
+						},
+						{
+							Name:      "konnectivity-uds",
+							HostPath:  "/etc/kubernetes/konnectivity-server",
+							MountPath: "/etc/kubernetes/konnectivity-server",
+							ReadOnly:  false,
+							PathType:  corev1.HostPathDirectoryOrCreate,
+						},
 					},
 				},
 				CertSANs: []string{"127.0.0.1"},
@@ -133,6 +148,7 @@ func (c *CoreOSConfiguration) InitConfiguration(externalCloudProvider bool, k8sV
 				"TLS_RSA_WITH_AES_256_GCM_SHA384",
 				"TLS_RSA_WITH_AES_128_GCM_SHA256",
 			}, // CIS benchmark
+			StaticPodPath: "/etc/kubernetes/manifests",
 			TypeMeta: metav1.TypeMeta{
 				APIVersion: kubeletconf.SchemeGroupVersion.String(),
 				Kind:       "KubeletConfiguration",

bootstrapper/internal/kubernetes/k8sapi/resources/konnectivity.go

@@ -0,0 +1,380 @@
+/*
+Copyright (c) Edgeless Systems GmbH
+
+SPDX-License-Identifier: AGPL-3.0-only
+*/
+
+package resources
+
+import (
+	"crypto/x509"
+	"crypto/x509/pkix"
+
+	"github.com/edgelesssys/constellation/bootstrapper/internal/certificate"
+	"github.com/edgelesssys/constellation/internal/kubernetes"
+	"github.com/edgelesssys/constellation/internal/versions"
+	appsv1 "k8s.io/api/apps/v1"
+	corev1 "k8s.io/api/core/v1"
+	rbacv1 "k8s.io/api/rbac/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/util/intstr"
+	"k8s.io/apiserver/pkg/apis/apiserver"
+)
+
+const (
+	// KonnectivityCertificateFilename is the path to the kubelets certificate.
+	KonnectivityCertificateFilename = "/etc/kubernetes/konnectivity.crt"
+	// KonnectivityKeyFilename is the path to the kubelets private key.
+	KonnectivityKeyFilename = "/etc/kubernetes/konnectivity.key"
+)
+
+type konnectivityAgents struct {
+	DaemonSet          appsv1.DaemonSet
+	ClusterRoleBinding rbacv1.ClusterRoleBinding
+	ServiceAccount     corev1.ServiceAccount
+}
+
+type konnectivityServerStaticPod struct {
+	StaticPod corev1.Pod
+}
+
+type egressSelectorConfiguration struct {
+	EgressSelectorConfiguration apiserver.EgressSelectorConfiguration
+}
+
+func NewKonnectivityAgents(konnectivityServerAddress string) *konnectivityAgents {
+	return &konnectivityAgents{
+		DaemonSet: appsv1.DaemonSet{
+			TypeMeta: metav1.TypeMeta{
+				APIVersion: "apps/v1",
+				Kind:       "DaemonSet",
+			},
+			ObjectMeta: metav1.ObjectMeta{
+				Name:      "konnectivity-agent",
+				Namespace: "kube-system",
+				Labels: map[string]string{
+					"k8s-app":                         "konnectivity-agent",
+					"addonmanager.kubernetes.io/mode": "Reconcile",
+				},
+			},
+			Spec: appsv1.DaemonSetSpec{
+				Selector: &metav1.LabelSelector{
+					MatchLabels: map[string]string{
+						"k8s-app": "konnectivity-agent",
+					},
+				},
+				Template: corev1.PodTemplateSpec{
+					ObjectMeta: metav1.ObjectMeta{
+						Labels: map[string]string{
+							"k8s-app": "konnectivity-agent",
+						},
+					},
+					Spec: corev1.PodSpec{
+						PriorityClassName: "system-cluster-critical",
+						Tolerations: []corev1.Toleration{
+							{
+								Key:      "node-role.kubernetes.io/master",
+								Operator: corev1.TolerationOpExists,
+								Effect:   corev1.TaintEffectNoSchedule,
+							},
+							{
+								Key:      "node-role.kubernetes.io/control-plane",
+								Operator: corev1.TolerationOpExists,
+								Effect:   corev1.TaintEffectNoSchedule,
+							},
+							{
+								Key:      "CriticalAddonsOnly",
+								Operator: corev1.TolerationOpExists,
+							},
+							{
+								Key:      "node.kubernetes.io/not-ready",
+								Operator: corev1.TolerationOpExists,
+								Effect:   corev1.TaintEffectNoExecute,
+							},
+						},
+						Containers: []corev1.Container{
+							{
+								Name:  "konnectivity-agent",
+								Image: versions.KonnectivityAgentImage,
+								Command: []string{
+									"/proxy-agent",
+								},
+								Args: []string{
+									"--logtostderr=true",
+									"--proxy-server-host=" + konnectivityServerAddress,
+									"--ca-cert=/var/run/secrets/kubernetes.io/serviceaccount/ca.crt",
+									"--proxy-server-port=8132",
+									"--admin-server-port=8133",
+									"--health-server-port=8134",
+									"--service-account-token-path=/var/run/secrets/tokens/konnectivity-agent-token",
+									"--agent-identifiers=host=$(HOST_IP)",
+									// we will be able to avoid constant polling when either one is done:
+									// https://github.com/kubernetes-sigs/apiserver-network-proxy/issues/358
+									// https://github.com/kubernetes-sigs/apiserver-network-proxy/issues/273
+									"--sync-forever=true",
+									// Ensure stable connection to the konnectivity server.
+									"--keepalive-time=60s",
+									"--sync-interval=1s",
+									"--sync-interval-cap=3s",
+									"--probe-interval=1s",
+									"--v=3",
+								},
+								Env: []corev1.EnvVar{
+									{
+										Name: "HOST_IP",
+										ValueFrom: &corev1.EnvVarSource{
+											FieldRef: &corev1.ObjectFieldSelector{
+												APIVersion: "v1",
+												FieldPath:  "status.hostIP",
+											},
+										},
+									},
+								},
+								VolumeMounts: []corev1.VolumeMount{
+									{
+										Name:      "konnectivity-agent-token",
+										MountPath: "/var/run/secrets/tokens",
+										ReadOnly:  true,
+									},
+								},
+								LivenessProbe: &corev1.Probe{
+									ProbeHandler: corev1.ProbeHandler{
+										HTTPGet: &corev1.HTTPGetAction{
+											Path: "/healthz",
+											Port: intstr.FromInt(8134),
+										},
+									},
+									InitialDelaySeconds: 15,
+									TimeoutSeconds:      15,
+								},
+							},
+						},
+						ServiceAccountName: "konnectivity-agent",
+						Volumes: []corev1.Volume{
+							{
+								Name: "konnectivity-agent-token",
+								VolumeSource: corev1.VolumeSource{
+									Projected: &corev1.ProjectedVolumeSource{
+										Sources: []corev1.VolumeProjection{
+											{
+												ServiceAccountToken: &corev1.ServiceAccountTokenProjection{
+													Audience: "system:konnectivity-server",
+													Path:     "konnectivity-agent-token",
+												},
+											},
+										},
+									},
+								},
+							},
+						},
+					},
+				},
+			},
+		},
+		ClusterRoleBinding: rbacv1.ClusterRoleBinding{
+			TypeMeta: metav1.TypeMeta{
+				APIVersion: "rbac.authorization.k8s.io/v1",
+				Kind:       "ClusterRoleBinding",
+			},
+			ObjectMeta: metav1.ObjectMeta{
+				Name: "system:konnectivity-server",
+				Labels: map[string]string{
+					"kubernetes.io/cluster-service":   "true",
+					"addonmanager.kubernetes.io/mode": "Reconcile",
+				},
+			},
+			RoleRef: rbacv1.RoleRef{
+				APIGroup: "rbac.authorization.k8s.io",
+				Kind:     "ClusterRole",
+				Name:     "system:auth-delegator",
+			},
+			Subjects: []rbacv1.Subject{
+				{
+					APIGroup: "rbac.authorization.k8s.io",
+					Kind:     "User",
+					Name:     "system:konnectivity-server",
+				},
+			},
+		},
+		ServiceAccount: corev1.ServiceAccount{
+			TypeMeta: metav1.TypeMeta{
+				APIVersion: "v1",
+				Kind:       "ServiceAccount",
+			},
+			ObjectMeta: metav1.ObjectMeta{
+				Name:      "konnectivity-agent",
+				Namespace: "kube-system",
+				Labels: map[string]string{
+					"kubernetes.io/cluster-service":   "true",
+					"addonmanager.kubernetes.io/mode": "Reconcile",
+				},
+			},
+		},
+	}
+}
+
+func NewKonnectivityServerStaticPod() *konnectivityServerStaticPod {
+	udsHostPathType := corev1.HostPathDirectoryOrCreate
+	return &konnectivityServerStaticPod{
+		StaticPod: corev1.Pod{
+			TypeMeta: metav1.TypeMeta{
+				APIVersion: "v1",
+				Kind:       "Pod",
+			},
+			ObjectMeta: metav1.ObjectMeta{
+				Name:      "konnectivity-server",
+				Namespace: "kube-system",
+			},
+			Spec: corev1.PodSpec{
+				PriorityClassName: "system-cluster-critical",
+				HostNetwork:       true,
+				Containers: []corev1.Container{
+					{
+						Name:    "konnectivity-server-container",
+						Image:   versions.KonnectivityServerImage,
+						Command: []string{"/proxy-server"},
+						Args: []string{
+							"--logtostderr=true",
+							// This needs to be consistent with the value set in egressSelectorConfiguration.
+							"--uds-name=/etc/kubernetes/konnectivity-server/konnectivity-server.socket",
+							// The following two lines assume the Konnectivity server is
+							// deployed on the same machine as the apiserver, and the certs and
+							// key of the API Server are at the specified location.
+							"--cluster-cert=/etc/kubernetes/pki/apiserver.crt",
+							"--cluster-key=/etc/kubernetes/pki/apiserver.key",
+							// This needs to be consistent with the value set in egressSelectorConfiguration.
+							"--mode=grpc",
+							"--server-port=0",
+							"--agent-port=8132",
+							"--admin-port=8133",
+							"--health-port=8134",
+							"--v=5",
+							"--agent-namespace=kube-system",
+							"--agent-service-account=konnectivity-agent",
+							"--kubeconfig=/etc/kubernetes/konnectivity-server.conf",
+							"--authentication-audience=system:konnectivity-server",
+							"--proxy-strategies=destHost",
+						},
+						LivenessProbe: &corev1.Probe{
+							ProbeHandler: corev1.ProbeHandler{
+								HTTPGet: &corev1.HTTPGetAction{
+									Path: "/healthz",
+									Port: intstr.FromInt(8134),
+								},
+							},
+							InitialDelaySeconds: 30,
+							TimeoutSeconds:      60,
+						},
+						Ports: []corev1.ContainerPort{
+							{
+								Name:          "agent-port",
+								ContainerPort: 8132,
+								HostPort:      8132,
+							},
+							{
+								Name:          "admin-port",
+								ContainerPort: 8133,
+								HostPort:      8133,
+							},
+							{
+								Name:          "health-port",
+								ContainerPort: 8134,
+								HostPort:      8134,
+							},
+						},
+						VolumeMounts: []corev1.VolumeMount{
+							{
+								Name:      "k8s-certs",
+								MountPath: "/etc/kubernetes/pki",
+								ReadOnly:  true,
+							},
+							{
+								Name:      "kubeconfig",
+								MountPath: "/etc/kubernetes/konnectivity-server.conf",
+								ReadOnly:  true,
+							},
+							{
+								Name:      "konnectivity-uds",
+								MountPath: "/etc/kubernetes/konnectivity-server",
+								ReadOnly:  false,
+							},
+						},
+					},
+				},
+				Volumes: []corev1.Volume{
+					{
+						Name: "k8s-certs",
+						VolumeSource: corev1.VolumeSource{
+							HostPath: &corev1.HostPathVolumeSource{
+								Path: "/etc/kubernetes/pki",
+							},
+						},
+					},
+					{
+						Name: "kubeconfig",
+						VolumeSource: corev1.VolumeSource{
+							HostPath: &corev1.HostPathVolumeSource{
+								Path: "/etc/kubernetes/konnectivity-server.conf",
+							},
+						},
+					},
+					{
+						Name: "konnectivity-uds",
+						VolumeSource: corev1.VolumeSource{
+							HostPath: &corev1.HostPathVolumeSource{
+								Path: "/etc/kubernetes/konnectivity-server",
+								Type: &udsHostPathType,
+							},
+						},
+					},
+				},
+			},
+		},
+	}
+}
+
+func NewEgressSelectorConfiguration() *egressSelectorConfiguration {
+	return &egressSelectorConfiguration{
+		EgressSelectorConfiguration: apiserver.EgressSelectorConfiguration{
+			TypeMeta: metav1.TypeMeta{
+				APIVersion: "apiserver.k8s.io/v1beta1",
+				Kind:       "EgressSelectorConfiguration",
+			},
+			EgressSelections: []apiserver.EgressSelection{
+				{
+					Name: "cluster",
+					Connection: apiserver.Connection{
+						ProxyProtocol: "GRPC",
+						Transport: &apiserver.Transport{
+							UDS: &apiserver.UDSTransport{
+								UDSName: "/etc/kubernetes/konnectivity-server/konnectivity-server.socket",
+							},
+						},
+					},
+				},
+			},
+		},
+	}
+}
+
+func (v *konnectivityAgents) Marshal() ([]byte, error) {
+	return kubernetes.MarshalK8SResources(v)
+}
+
+func (v *konnectivityServerStaticPod) Marshal() ([]byte, error) {
+	return kubernetes.MarshalK8SResources(v)
+}
+
+func (v *egressSelectorConfiguration) Marshal() ([]byte, error) {
+	return kubernetes.MarshalK8SResources(v)
+}
+
+// GetCertificateRequest returns a certificate request and matching private key for the konnectivity server.
+func GetKonnectivityCertificateRequest() (certificateRequest []byte, privateKey []byte, err error) {
+	csrTemplate := &x509.CertificateRequest{
+		Subject: pkix.Name{
+			CommonName: "system:konnectivity-server",
+		},
+	}
+	return certificate.GetCertificateRequest(csrTemplate)
+}

bootstrapper/internal/kubernetes/k8sapi/resources/konnectivity_test.go

@@ -0,0 +1,28 @@
+/*
+Copyright (c) Edgeless Systems GmbH
+
+SPDX-License-Identifier: AGPL-3.0-only
+*/
+
+package resources
+
+import (
+	"testing"
+
+	"github.com/edgelesssys/constellation/internal/kubernetes"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestKonnectivityMarshalUnmarshal(t *testing.T) {
+	require := require.New(t)
+	assert := assert.New(t)
+
+	kmsDepl := NewKonnectivityAgents("192.168.2.1")
+	data, err := kmsDepl.Marshal()
+	require.NoError(err)
+
+	var recreated konnectivityAgents
+	require.NoError(kubernetes.UnmarshalK8SResources(data, &recreated))
+	assert.Equal(kmsDepl, &recreated)
+}

bootstrapper/internal/kubernetes/k8sapi/util.go

@@ -28,6 +28,7 @@ import (
 	"github.com/edgelesssys/constellation/bootstrapper/internal/kubernetes/k8sapi/resources"
 	"github.com/edgelesssys/constellation/internal/constants"
 	"github.com/edgelesssys/constellation/internal/kubernetes"
+	"github.com/edgelesssys/constellation/internal/role"
 	kubeconstants "k8s.io/kubernetes/cmd/kubeadm/app/constants"
 
 	"github.com/edgelesssys/constellation/internal/crypto"
@@ -130,7 +131,7 @@ func (k *KubernetesUtil) InstallComponents(ctx context.Context, version versions
 }
 
 func (k *KubernetesUtil) InitCluster(
-	ctx context.Context, initConfig []byte, nodeName string, ips []net.IP, log *logger.Logger,
+	ctx context.Context, initConfig []byte, nodeName string, ips []net.IP, controlPlaneEndpoint string, log *logger.Logger,
 ) error {
 	// TODO: audit policy should be user input
 	auditPolicy, err := resources.NewDefaultAuditPolicy().Marshal()
@@ -180,6 +181,11 @@ func (k *KubernetesUtil) InitCluster(
 		return err
 	}
 
+	log.Infof("Preparing node for Konnectivity")
+	if err := k.prepareControlPlaneForKonnectivity(ctx, controlPlaneEndpoint); err != nil {
+		return fmt.Errorf("setup konnectivity: %w", err)
+	}
+
 	// initialize the cluster
 	log.Infof("Initializing the cluster using kubeadm init")
 	cmd = exec.CommandContext(ctx, kubeadmPath, "init", "-v=5", "--skip-phases=preflight,certs,addon/kube-proxy", "--config", initConfigFile.Name())
@@ -195,6 +201,64 @@ func (k *KubernetesUtil) InitCluster(
 	return nil
 }
 
+func (k *KubernetesUtil) prepareControlPlaneForKonnectivity(ctx context.Context, loadBalancerEndpoint string) error {
+	if !strings.Contains(loadBalancerEndpoint, ":") {
+		loadBalancerEndpoint = net.JoinHostPort(loadBalancerEndpoint, strconv.Itoa(constants.KubernetesPort))
+	}
+
+	if err := os.MkdirAll("/etc/kubernetes/manifests", os.ModePerm); err != nil {
+		return fmt.Errorf("creating static pods directory: %w", err)
+	}
+
+	konnectivityServerYaml, err := resources.NewKonnectivityServerStaticPod().Marshal()
+	if err != nil {
+		return fmt.Errorf("generating konnectivity server static pod: %w", err)
+	}
+	if err := os.WriteFile("/etc/kubernetes/manifests/konnectivity-server.yaml", konnectivityServerYaml, 0o644); err != nil {
+		return fmt.Errorf("writing konnectivity server pod: %w", err)
+	}
+
+	egressConfigYaml, err := resources.NewEgressSelectorConfiguration().Marshal()
+	if err != nil {
+		return fmt.Errorf("generating egress selector configuration: %w", err)
+	}
+	if err := os.WriteFile("/etc/kubernetes/egress-selector-configuration.yaml", egressConfigYaml, 0o644); err != nil {
+		return fmt.Errorf("writing egress selector config: %w", err)
+	}
+
+	if err := k.createSignedKonnectivityCert(); err != nil {
+		return fmt.Errorf("generating konnectivity server certificate: %w", err)
+	}
+
+	if out, err := exec.CommandContext(ctx, kubectlPath, "config", "set-credentials", "--kubeconfig", "/etc/kubernetes/konnectivity-server.conf", "system:konnectivity-server",
+		"--client-certificate", "/etc/kubernetes/konnectivity.crt", "--client-key", "/etc/kubernetes/konnectivity.key", "--embed-certs=true").CombinedOutput(); err != nil {
+		return fmt.Errorf("konnectivity kubeconfig set-credentials: %w, %s", err, string(out))
+	}
+	if out, err := exec.CommandContext(ctx, kubectlPath, "--kubeconfig", "/etc/kubernetes/konnectivity-server.conf", "config", "set-cluster", "kubernetes", "--server", "https://"+loadBalancerEndpoint,
+		"--certificate-authority", "/etc/kubernetes/pki/ca.crt", "--embed-certs=true").CombinedOutput(); err != nil {
+		return fmt.Errorf("konnectivity kubeconfig set-cluster: %w, %s", err, string(out))
+	}
+	if out, err := exec.CommandContext(ctx, kubectlPath, "--kubeconfig", "/etc/kubernetes/konnectivity-server.conf", "config", "set-context", "system:konnectivity-server@kubernetes",
+		"--cluster", "kubernetes", "--user", "system:konnectivity-server").CombinedOutput(); err != nil {
+		return fmt.Errorf("konnectivity kubeconfig set-context: %w, %s", err, string(out))
+	}
+	if out, err := exec.CommandContext(ctx, kubectlPath, "--kubeconfig", "/etc/kubernetes/konnectivity-server.conf", "config", "use-context", "system:konnectivity-server@kubernetes").CombinedOutput(); err != nil {
+		return fmt.Errorf("konnectivity kubeconfig use-context: %w, %s", err, string(out))
+	}
+	// cleanup
+	if err := os.Remove("/etc/kubernetes/konnectivity.crt"); err != nil {
+		return fmt.Errorf("removing konnectivity certificate: %w", err)
+	}
+	if err := os.Remove("/etc/kubernetes/konnectivity.key"); err != nil {
+		return fmt.Errorf("removing konnectivity key: %w", err)
+	}
+	return nil
+}
+
+func (k *KubernetesUtil) SetupKonnectivity(kubectl Client, konnectivityAgentsDaemonSet kubernetes.Marshaler) error {
+	return kubectl.Apply(konnectivityAgentsDaemonSet, true)
+}
+
 func (k *KubernetesUtil) SetupHelmDeployments(ctx context.Context, kubectl Client, helmDeployments []byte, in SetupPodNetworkInput, log *logger.Logger) error {
 	var helmDeploy helm.Deployments
 	if err := json.Unmarshal(helmDeployments, &helmDeploy); err != nil {
@@ -450,7 +514,7 @@ func (k *KubernetesUtil) SetupNodeOperator(ctx context.Context, kubectl Client,
 }
 
 // JoinCluster joins existing Kubernetes cluster using kubeadm join.
-func (k *KubernetesUtil) JoinCluster(ctx context.Context, joinConfig []byte, log *logger.Logger) error {
+func (k *KubernetesUtil) JoinCluster(ctx context.Context, joinConfig []byte, peerRole role.Role, controlPlaneEndpoint string, log *logger.Logger) error {
 	// TODO: audit policy should be user input
 	auditPolicy, err := resources.NewDefaultAuditPolicy().Marshal()
 	if err != nil {
@@ -469,6 +533,13 @@ func (k *KubernetesUtil) JoinCluster(ctx context.Context, joinConfig []byte, log
 		return fmt.Errorf("writing kubeadm init yaml config %v: %w", joinConfigFile.Name(), err)
 	}
 
+	if peerRole == role.ControlPlane {
+		log.Infof("Prep Init Kubernetes cluster")
+		if err := k.prepareControlPlaneForKonnectivity(ctx, controlPlaneEndpoint); err != nil {
+			return fmt.Errorf("setup konnectivity: %w", err)
+		}
+	}
+
 	// run `kubeadm join` to join a worker node to an existing Kubernetes cluster
 	cmd := exec.CommandContext(ctx, kubeadmPath, "join", "-v=5", "--config", joinConfigFile.Name())
 	out, err := cmd.CombinedOutput()
@@ -497,6 +568,7 @@ func (k *KubernetesUtil) StartKubelet() error {
 // createSignedKubeletCert manually creates a Kubernetes CA signed kubelet certificate for the bootstrapper node.
 // This is necessary because this node does not request a certificate from the join service.
 func (k *KubernetesUtil) createSignedKubeletCert(nodeName string, ips []net.IP) error {
+	// Create CSR
 	certRequestRaw, kubeletKey, err := kubelet.GetCertificateRequest(nodeName, ips)
 	if err != nil {
 		return err
@@ -505,48 +577,12 @@ func (k *KubernetesUtil) createSignedKubeletCert(nodeName string, ips []net.IP)
 		return err
 	}
 
-	parentCertRaw, err := k.file.Read(filepath.Join(
-		kubeconstants.KubernetesDir,
-		kubeconstants.DefaultCertificateDir,
-		kubeconstants.CACertName,
-	))
-	if err != nil {
-		return err
-	}
-	parentCert, err := crypto.PemToX509Cert(parentCertRaw)
-	if err != nil {
-		return err
-	}
-
-	parentKeyRaw, err := k.file.Read(filepath.Join(
-		kubeconstants.KubernetesDir,
-		kubeconstants.DefaultCertificateDir,
-		kubeconstants.CAKeyName,
-	))
-	if err != nil {
-		return err
-	}
-	parentKeyPEM, _ := pem.Decode(parentKeyRaw)
-	var parentKey any
-	switch parentKeyPEM.Type {
-	case "EC PRIVATE KEY":
-		parentKey, err = x509.ParseECPrivateKey(parentKeyPEM.Bytes)
-	case "RSA PRIVATE KEY":
-		parentKey, err = x509.ParsePKCS1PrivateKey(parentKeyPEM.Bytes)
-	case "PRIVATE KEY":
-		parentKey, err = x509.ParsePKCS8PrivateKey(parentKeyPEM.Bytes)
-	default:
-		err = fmt.Errorf("unsupported key type %q", parentKeyPEM.Type)
-	}
-	if err != nil {
-		return err
-	}
-
 	certRequest, err := x509.ParseCertificateRequest(certRequestRaw)
 	if err != nil {
 		return err
 	}
 
+	// Prepare certificate signing
 	serialNumber, err := crypto.GenerateCertificateSerialNumber()
 	if err != nil {
 		return err
@@ -570,10 +606,18 @@ func (k *KubernetesUtil) createSignedKubeletCert(nodeName string, ips []net.IP)
 		IPAddresses:           certRequest.IPAddresses,
 	}
 
+	parentCert, parentKey, err := k.getKubernetesCACertAndKey()
+	if err != nil {
+		return err
+	}
+
+	// Sign the certificate
 	certRaw, err := x509.CreateCertificate(rand.Reader, certTmpl, parentCert, certRequest.PublicKey, parentKey)
 	if err != nil {
 		return err
 	}
+
+	// Write the certificate
 	kubeletCert := pem.EncodeToMemory(&pem.Block{
 		Type:  "CERTIFICATE",
 		Bytes: certRaw,
@@ -581,3 +625,97 @@ func (k *KubernetesUtil) createSignedKubeletCert(nodeName string, ips []net.IP)
 
 	return k.file.Write(kubelet.CertificateFilename, kubeletCert, file.OptMkdirAll)
 }
+
+// createSignedKonnectivityCert manually creates a Kubernetes CA signed certificate for the Konnectivity server.
+func (k *KubernetesUtil) createSignedKonnectivityCert() error {
+	// Create CSR
+	certRequestRaw, keyPem, err := resources.GetKonnectivityCertificateRequest()
+	if err != nil {
+		return err
+	}
+	if err := k.file.Write(resources.KonnectivityKeyFilename, keyPem, file.OptMkdirAll); err != nil {
+		return err
+	}
+
+	certRequest, err := x509.ParseCertificateRequest(certRequestRaw)
+	if err != nil {
+		return err
+	}
+
+	// Prepare certificate signing
+	serialNumber, err := crypto.GenerateCertificateSerialNumber()
+	if err != nil {
+		return err
+	}
+
+	now := time.Now()
+	// Create the kubelet certificate
+	// For a reference on the certificate fields, see: https://kubernetes.io/docs/setup/best-practices/certificates/
+	certTmpl := &x509.Certificate{
+		SerialNumber: serialNumber,
+		NotBefore:    now.Add(-2 * time.Hour),
+		NotAfter:     now.Add(24 * 365 * time.Hour),
+		Subject:      certRequest.Subject,
+	}
+
+	parentCert, parentKey, err := k.getKubernetesCACertAndKey()
+	if err != nil {
+		return err
+	}
+
+	// Sign the certificate
+	certRaw, err := x509.CreateCertificate(rand.Reader, certTmpl, parentCert, certRequest.PublicKey, parentKey)
+	if err != nil {
+		return err
+	}
+
+	// Write the certificate
+	konnectivityCert := pem.EncodeToMemory(&pem.Block{
+		Type:  "CERTIFICATE",
+		Bytes: certRaw,
+	})
+
+	return k.file.Write(resources.KonnectivityCertificateFilename, konnectivityCert, file.OptMkdirAll)
+}
+
+// getKubernetesCACertAndKey returns the Kubernetes CA certificate and key.
+// The key of type `any` can be consumed by `x509.CreateCertificate()`.
+func (k *KubernetesUtil) getKubernetesCACertAndKey() (*x509.Certificate, any, error) {
+	parentCertRaw, err := k.file.Read(filepath.Join(
+		kubeconstants.KubernetesDir,
+		kubeconstants.DefaultCertificateDir,
+		kubeconstants.CACertName,
+	))
+	if err != nil {
+		return nil, nil, err
+	}
+	parentCert, err := crypto.PemToX509Cert(parentCertRaw)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	parentKeyRaw, err := k.file.Read(filepath.Join(
+		kubeconstants.KubernetesDir,
+		kubeconstants.DefaultCertificateDir,
+		kubeconstants.CAKeyName,
+	))
+	if err != nil {
+		return nil, nil, err
+	}
+	parentKeyPEM, _ := pem.Decode(parentKeyRaw)
+	var parentKey any
+	switch parentKeyPEM.Type {
+	case "EC PRIVATE KEY":
+		parentKey, err = x509.ParseECPrivateKey(parentKeyPEM.Bytes)
+	case "RSA PRIVATE KEY":
+		parentKey, err = x509.ParsePKCS1PrivateKey(parentKeyPEM.Bytes)
+	case "PRIVATE KEY":
+		parentKey, err = x509.ParsePKCS8PrivateKey(parentKeyPEM.Bytes)
+	default:
+		err = fmt.Errorf("unsupported key type %q", parentKeyPEM.Type)
+	}
+	if err != nil {
+		return nil, nil, err
+	}
+	return parentCert, parentKey, nil
+}

bootstrapper/internal/kubernetes/k8sutil.go

@@ -13,19 +13,21 @@ import (
 	"github.com/edgelesssys/constellation/bootstrapper/internal/kubernetes/k8sapi"
 	"github.com/edgelesssys/constellation/internal/kubernetes"
 	"github.com/edgelesssys/constellation/internal/logger"
+	"github.com/edgelesssys/constellation/internal/role"
 	"github.com/edgelesssys/constellation/internal/versions"
 )
 
 type clusterUtil interface {
 	InstallComponents(ctx context.Context, version versions.ValidK8sVersion) error
-	InitCluster(ctx context.Context, initConfig []byte, nodeName string, ips []net.IP, log *logger.Logger) error
+	InitCluster(ctx context.Context, initConfig []byte, nodeName string, ips []net.IP, controlPlaneEndpoint string, log *logger.Logger) error
-	JoinCluster(ctx context.Context, joinConfig []byte, log *logger.Logger) error
+	JoinCluster(ctx context.Context, joinConfig []byte, peerRole role.Role, controlPlaneEndpoint string, log *logger.Logger) error
 	SetupHelmDeployments(ctx context.Context, client k8sapi.Client, helmDeployments []byte, in k8sapi.SetupPodNetworkInput, log *logger.Logger) error
 	SetupAccessManager(kubectl k8sapi.Client, sshUsers kubernetes.Marshaler) error
 	SetupAutoscaling(kubectl k8sapi.Client, clusterAutoscalerConfiguration kubernetes.Marshaler, secrets kubernetes.Marshaler) error
 	SetupJoinService(kubectl k8sapi.Client, joinServiceConfiguration kubernetes.Marshaler) error
 	SetupCloudControllerManager(kubectl k8sapi.Client, cloudControllerManagerConfiguration kubernetes.Marshaler, configMaps kubernetes.Marshaler, secrets kubernetes.Marshaler) error
 	SetupCloudNodeManager(kubectl k8sapi.Client, cloudNodeManagerConfiguration kubernetes.Marshaler) error
+	SetupKonnectivity(kubectl k8sapi.Client, konnectivityAgentsDaemonSet kubernetes.Marshaler) error
 	SetupKMS(kubectl k8sapi.Client, kmsConfiguration kubernetes.Marshaler) error
 	SetupVerificationService(kubectl k8sapi.Client, verificationServiceConfiguration kubernetes.Marshaler) error
 	SetupGCPGuestAgent(kubectl k8sapi.Client, gcpGuestAgentConfiguration kubernetes.Marshaler) error

bootstrapper/internal/kubernetes/kubernetes.go

@@ -19,7 +19,6 @@ import (
 	"github.com/edgelesssys/constellation/bootstrapper/internal/kubernetes/k8sapi/resources"
 	"github.com/edgelesssys/constellation/internal/cloud/metadata"
 	"github.com/edgelesssys/constellation/internal/constants"
-	"github.com/edgelesssys/constellation/internal/iproute"
 	"github.com/edgelesssys/constellation/internal/logger"
 	"github.com/edgelesssys/constellation/internal/role"
 	"github.com/edgelesssys/constellation/internal/versions"
@@ -156,7 +155,7 @@ func (k *KubeWrapper) InitCluster(
 		return nil, fmt.Errorf("encoding kubeadm init configuration as YAML: %w", err)
 	}
 	log.Infof("Initializing Kubernetes cluster")
-	if err := k.clusterUtil.InitCluster(ctx, initConfigYAML, nodeName, validIPs, log); err != nil {
+	if err := k.clusterUtil.InitCluster(ctx, initConfigYAML, nodeName, validIPs, controlPlaneEndpoint, log); err != nil {
 		return nil, fmt.Errorf("kubeadm init: %w", err)
 	}
 	kubeConfig, err := k.GetKubeconfig()
@@ -178,6 +177,19 @@ func (k *KubeWrapper) InitCluster(
 		return nil, fmt.Errorf("setting up pod network: %w", err)
 	}
 
+	var controlPlaneIP string
+	if strings.Contains(controlPlaneEndpoint, ":") {
+		controlPlaneIP, _, err = net.SplitHostPort(controlPlaneEndpoint)
+		if err != nil {
+			return nil, fmt.Errorf("parsing control plane endpoint: %w", err)
+		}
+	} else {
+		controlPlaneIP = controlPlaneEndpoint
+	}
+	if err = k.clusterUtil.SetupKonnectivity(k.client, resources.NewKonnectivityAgents(controlPlaneIP)); err != nil {
+		return nil, fmt.Errorf("setting up konnectivity: %w", err)
+	}
+
 	kms := resources.NewKMSDeployment(k.cloudProvider, kmsConfig)
 	if err = k.clusterUtil.SetupKMS(k.client, kms); err != nil {
 		return nil, fmt.Errorf("setting up kms: %w", err)
@@ -277,19 +289,7 @@ func (k *KubeWrapper) JoinCluster(ctx context.Context, args *kubeadm.BootstrapTo
 		zap.String("nodeIP", nodeInternalIP),
 	).Infof("Setting information for node")
 
-	// Step 2: Remove load balancer from local routing table on GCP.
+	// Step 2: configure kubeadm join config
-	if k.cloudProvider == "gcp" {
-		ip, _, err := net.SplitHostPort(loadbalancerEndpoint)
-		if err != nil {
-			return fmt.Errorf("parsing load balancer IP: %w", err)
-		}
-		if err := iproute.RemoveFromLocalRoutingTable(ctx, ip); err != nil {
-			return fmt.Errorf("removing load balancer IP from routing table: %w", err)
-		}
-		log.Infof("Removed load balancer IP from routing table")
-	}
-
-	// Step 3: configure kubeadm join config
 	joinConfig := k.configProvider.JoinConfiguration(k.cloudControllerManager.Supported())
 	joinConfig.SetAPIServerEndpoint(args.APIServerEndpoint)
 	joinConfig.SetToken(args.Token)
@@ -305,7 +305,7 @@ func (k *KubeWrapper) JoinCluster(ctx context.Context, args *kubeadm.BootstrapTo
 		return fmt.Errorf("encoding kubeadm join configuration as YAML: %w", err)
 	}
 	log.With(zap.String("apiServerEndpoint", args.APIServerEndpoint)).Infof("Joining Kubernetes cluster")
-	if err := k.clusterUtil.JoinCluster(ctx, joinConfigYAML, log); err != nil {
+	if err := k.clusterUtil.JoinCluster(ctx, joinConfigYAML, peerRole, loadbalancerEndpoint, log); err != nil {
 		return fmt.Errorf("joining cluster: %v; %w ", string(joinConfigYAML), err)
 	}
 

bootstrapper/internal/kubernetes/kubernetes_test.go

@@ -263,6 +263,18 @@ func TestInitCluster(t *testing.T) {
 			wantErr:                true,
 			k8sVersion:             versions.Default,
 		},
+		"kubeadm init fails when setting up konnectivity": {
+			clusterUtil: stubClusterUtil{setupKonnectivityError: someErr},
+			kubeconfigReader: &stubKubeconfigReader{
+				Kubeconfig: []byte("someKubeconfig"),
+			},
+			providerMetadata:       &stubProviderMetadata{SupportedResp: false},
+			CloudControllerManager: &stubCloudControllerManager{},
+			CloudNodeManager:       &stubCloudNodeManager{SupportedResp: false},
+			ClusterAutoscaler:      &stubClusterAutoscaler{},
+			wantErr:                true,
+			k8sVersion:             versions.Default,
+		},
 		"kubeadm init fails when setting up verification service": {
 			clusterUtil: stubClusterUtil{setupVerificationServiceErr: someErr},
 			kubeconfigReader: &stubKubeconfigReader{
@@ -522,6 +534,7 @@ type stubClusterUtil struct {
 	setupJoinServiceError            error
 	setupCloudControllerManagerError error
 	setupCloudNodeManagerError       error
+	setupKonnectivityError           error
 	setupKMSError                    error
 	setupAccessManagerError          error
 	setupVerificationServiceErr      error
@@ -536,11 +549,15 @@ type stubClusterUtil struct {
 	joinConfigs [][]byte
 }
 
+func (s *stubClusterUtil) SetupKonnectivity(kubectl k8sapi.Client, konnectivityAgentsDaemonSet kubernetes.Marshaler) error {
+	return s.setupKonnectivityError
+}
+
 func (s *stubClusterUtil) InstallComponents(ctx context.Context, version versions.ValidK8sVersion) error {
 	return s.installComponentsErr
 }
 
-func (s *stubClusterUtil) InitCluster(ctx context.Context, initConfig []byte, nodeName string, ips []net.IP, log *logger.Logger) error {
+func (s *stubClusterUtil) InitCluster(ctx context.Context, initConfig []byte, nodeName string, ips []net.IP, controlPlaneEndpoint string, log *logger.Logger) error {
 	s.initConfigs = append(s.initConfigs, initConfig)
 	return s.initClusterErr
 }
@@ -593,7 +610,7 @@ func (s *stubClusterUtil) SetupNodeOperator(ctx context.Context, kubectl k8sapi.
 	return s.setupNodeOperatorErr
 }
 
-func (s *stubClusterUtil) JoinCluster(ctx context.Context, joinConfig []byte, log *logger.Logger) error {
+func (s *stubClusterUtil) JoinCluster(ctx context.Context, joinConfig []byte, peerRole role.Role, controlPlaneEndpoint string, log *logger.Logger) error {
 	s.joinConfigs = append(s.joinConfigs, joinConfig)
 	return s.joinClusterErr
 }

cli/internal/azure/loadbalancer.go

@@ -30,6 +30,7 @@ const (
 	verifyHealthProbeName              = "verifyHealthProbe"
 	coordHealthProbeName               = "coordHealthProbe"
 	debugdHealthProbeName              = "debugdHealthProbe"
+	konnectivityHealthProbeName        = "konnectivityHealthProbe"
 )
 
 // Azure returns a Azure representation of LoadBalancer.
@@ -86,6 +87,13 @@ func (l LoadBalancer) Azure() armnetwork.LoadBalancer {
 						Port:     to.Ptr[int32](constants.DebugdPort),
 					},
 				},
+				{
+					Name: to.Ptr(konnectivityHealthProbeName),
+					Properties: &armnetwork.ProbePropertiesFormat{
+						Protocol: to.Ptr(armnetwork.ProbeProtocolTCP),
+						Port:     to.Ptr[int32](constants.KonnectivityPort),
+					},
+				},
 			},
 			LoadBalancingRules: []*armnetwork.LoadBalancingRule{
 				{
@@ -175,6 +183,35 @@ func (l LoadBalancer) Azure() armnetwork.LoadBalancer {
 						},
 					},
 				},
+				{
+					Name: to.Ptr("konnectivityLoadBalancerRule"),
+					Properties: &armnetwork.LoadBalancingRulePropertiesFormat{
+						FrontendIPConfiguration: &armnetwork.SubResource{
+							ID: to.Ptr("/subscriptions/" + l.Subscription +
+								"/resourceGroups/" + l.ResourceGroup +
+								"/providers/Microsoft.Network/loadBalancers/" + l.Name +
+								"/frontendIPConfigurations/" + frontEndIPConfigName),
+						},
+						FrontendPort: to.Ptr[int32](constants.KonnectivityPort),
+						BackendPort:  to.Ptr[int32](constants.KonnectivityPort),
+						Protocol:     to.Ptr(armnetwork.TransportProtocolTCP),
+						Probe: &armnetwork.SubResource{
+							ID: to.Ptr("/subscriptions/" + l.Subscription +
+								"/resourceGroups/" + l.ResourceGroup +
+								"/providers/Microsoft.Network/loadBalancers/" + l.Name +
+								"/probes/" + konnectivityHealthProbeName),
+						},
+						DisableOutboundSnat: to.Ptr(true),
+						BackendAddressPools: []*armnetwork.SubResource{
+							{
+								ID: to.Ptr("/subscriptions/" + l.Subscription +
+									"/resourceGroups/" + l.ResourceGroup +
+									"/providers/Microsoft.Network/loadBalancers/" + l.Name +
+									"/backendAddressPools/" + backEndAddressPoolControlPlaneName),
+							},
+						},
+					},
+				},
 			},
 			OutboundRules: []*armnetwork.OutboundRule{
 				{

cli/internal/cloudcmd/create_test.go

@@ -40,7 +40,7 @@ func TestCreator(t *testing.T) {
 		GCPSubnetwork:                   "subnetwork",
 		GCPLoadbalancers:                []string{"kube-lb", "boot-lb", "verify-lb"},
 		GCPFirewalls: []string{
-			"bootstrapper", "ssh", "nodeport", "kubernetes",
+			"bootstrapper", "ssh", "nodeport", "kubernetes", "konnectivity",
 			"allow-cluster-internal-tcp", "allow-cluster-internal-udp", "allow-cluster-internal-icmp",
 			"allow-node-internal-tcp", "allow-node-internal-udp", "allow-node-internal-icmp",
 		},

cli/internal/gcp/client/api.go

@@ -49,29 +49,37 @@ type firewallsAPI interface {
 
 type forwardingRulesAPI interface {
 	Close() error
-	Delete(ctx context.Context, req *computepb.DeleteForwardingRuleRequest,
+	Delete(ctx context.Context, req *computepb.DeleteGlobalForwardingRuleRequest,
 		opts ...gax.CallOption) (Operation, error)
-	Insert(ctx context.Context, req *computepb.InsertForwardingRuleRequest,
+	Insert(ctx context.Context, req *computepb.InsertGlobalForwardingRuleRequest,
 		opts ...gax.CallOption) (Operation, error)
-	Get(ctx context.Context, req *computepb.GetForwardingRuleRequest,
+	Get(ctx context.Context, req *computepb.GetGlobalForwardingRuleRequest,
 		opts ...gax.CallOption) (*computepb.ForwardingRule, error)
-	SetLabels(ctx context.Context, req *computepb.SetLabelsForwardingRuleRequest,
+	SetLabels(ctx context.Context, req *computepb.SetLabelsGlobalForwardingRuleRequest,
 		opts ...gax.CallOption) (Operation, error)
 }
 
 type backendServicesAPI interface {
 	Close() error
-	Delete(ctx context.Context, req *computepb.DeleteRegionBackendServiceRequest,
+	Delete(ctx context.Context, req *computepb.DeleteBackendServiceRequest,
 		opts ...gax.CallOption) (Operation, error)
-	Insert(ctx context.Context, req *computepb.InsertRegionBackendServiceRequest,
+	Insert(ctx context.Context, req *computepb.InsertBackendServiceRequest,
 		opts ...gax.CallOption) (Operation, error)
 }
 
 type healthChecksAPI interface {
 	Close() error
-	Delete(ctx context.Context, req *computepb.DeleteRegionHealthCheckRequest,
+	Delete(ctx context.Context, req *computepb.DeleteHealthCheckRequest,
 		opts ...gax.CallOption) (Operation, error)
-	Insert(ctx context.Context, req *computepb.InsertRegionHealthCheckRequest,
+	Insert(ctx context.Context, req *computepb.InsertHealthCheckRequest,
+		opts ...gax.CallOption) (Operation, error)
+}
+
+type targetTCPProxiesAPI interface {
+	Close() error
+	Delete(ctx context.Context, req *computepb.DeleteTargetTcpProxyRequest,
+		opts ...gax.CallOption) (Operation, error)
+	Insert(ctx context.Context, req *computepb.InsertTargetTcpProxyRequest,
 		opts ...gax.CallOption) (Operation, error)
 }
 
@@ -129,11 +137,11 @@ type projectsAPI interface {
 
 type addressesAPI interface {
 	Close() error
-	Insert(ctx context.Context, req *computepb.InsertAddressRequest,
+	Insert(ctx context.Context, req *computepb.InsertGlobalAddressRequest,
 		opts ...gax.CallOption) (Operation, error)
-	Get(ctx context.Context, req *computepb.GetAddressRequest,
+	Get(ctx context.Context, req *computepb.GetGlobalAddressRequest,
 		opts ...gax.CallOption) (*computepb.Address, error)
-	Delete(ctx context.Context, req *computepb.DeleteAddressRequest,
+	Delete(ctx context.Context, req *computepb.DeleteGlobalAddressRequest,
 		opts ...gax.CallOption) (Operation, error)
 }
 

cli/internal/gcp/client/api_test.go

@@ -231,7 +231,7 @@ func (a stubBackendServicesAPI) Close() error {
 	return nil
 }
 
-func (a stubBackendServicesAPI) Insert(ctx context.Context, req *computepb.InsertRegionBackendServiceRequest,
+func (a stubBackendServicesAPI) Insert(ctx context.Context, req *computepb.InsertBackendServiceRequest,
 	opts ...gax.CallOption,
 ) (Operation, error) {
 	if a.insertErr != nil {
@@ -240,12 +240,46 @@ func (a stubBackendServicesAPI) Insert(ctx context.Context, req *computepb.Inser
 	return &stubOperation{
 		&computepb.Operation{
 			Name: proto.String("name"),
-			Region: proto.String("region"),
 		},
 	}, nil
 }
 
-func (a stubBackendServicesAPI) Delete(ctx context.Context, req *computepb.DeleteRegionBackendServiceRequest,
+func (a stubBackendServicesAPI) Delete(ctx context.Context, req *computepb.DeleteBackendServiceRequest,
+	opts ...gax.CallOption,
+) (Operation, error) {
+	if a.deleteErr != nil {
+		return nil, a.deleteErr
+	}
+	return &stubOperation{
+		&computepb.Operation{
+			Name: proto.String("name"),
+		},
+	}, nil
+}
+
+type stubTargetTCPProxiesAPI struct {
+	insertErr error
+	deleteErr error
+}
+
+func (a stubTargetTCPProxiesAPI) Close() error {
+	return nil
+}
+
+func (a stubTargetTCPProxiesAPI) Insert(ctx context.Context, req *computepb.InsertTargetTcpProxyRequest,
+	opts ...gax.CallOption,
+) (Operation, error) {
+	if a.insertErr != nil {
+		return nil, a.insertErr
+	}
+	return &stubOperation{
+		&computepb.Operation{
+			Name: proto.String("name"),
+		},
+	}, nil
+}
+
+func (a stubTargetTCPProxiesAPI) Delete(ctx context.Context, req *computepb.DeleteTargetTcpProxyRequest,
 	opts ...gax.CallOption,
 ) (Operation, error) {
 	if a.deleteErr != nil {
@@ -254,7 +288,6 @@ func (a stubBackendServicesAPI) Delete(ctx context.Context, req *computepb.Delet
 	return &stubOperation{
 		&computepb.Operation{
 			Name: proto.String("name"),
-			Region: proto.String("region"),
 		},
 	}, nil
 }
@@ -271,7 +304,7 @@ func (a stubForwardingRulesAPI) Close() error {
 	return nil
 }
 
-func (a stubForwardingRulesAPI) Insert(ctx context.Context, req *computepb.InsertForwardingRuleRequest,
+func (a stubForwardingRulesAPI) Insert(ctx context.Context, req *computepb.InsertGlobalForwardingRuleRequest,
 	opts ...gax.CallOption,
 ) (Operation, error) {
 	if a.insertErr != nil {
@@ -280,12 +313,11 @@ func (a stubForwardingRulesAPI) Insert(ctx context.Context, req *computepb.Inser
 	return &stubOperation{
 		&computepb.Operation{
 			Name: proto.String("name"),
-			Region: proto.String("region"),
 		},
 	}, nil
 }
 
-func (a stubForwardingRulesAPI) Delete(ctx context.Context, req *computepb.DeleteForwardingRuleRequest,
+func (a stubForwardingRulesAPI) Delete(ctx context.Context, req *computepb.DeleteGlobalForwardingRuleRequest,
 	opts ...gax.CallOption,
 ) (Operation, error) {
 	if a.deleteErr != nil {
@@ -294,12 +326,11 @@ func (a stubForwardingRulesAPI) Delete(ctx context.Context, req *computepb.Delet
 	return &stubOperation{
 		&computepb.Operation{
 			Name: proto.String("name"),
-			Region: proto.String("region"),
 		},
 	}, nil
 }
 
-func (a stubForwardingRulesAPI) Get(ctx context.Context, req *computepb.GetForwardingRuleRequest,
+func (a stubForwardingRulesAPI) Get(ctx context.Context, req *computepb.GetGlobalForwardingRuleRequest,
 	opts ...gax.CallOption,
 ) (*computepb.ForwardingRule, error) {
 	if a.getErr != nil {
@@ -308,7 +339,7 @@ func (a stubForwardingRulesAPI) Get(ctx context.Context, req *computepb.GetForwa
 	return a.forwardingRule, nil
 }
 
-func (a stubForwardingRulesAPI) SetLabels(ctx context.Context, req *computepb.SetLabelsForwardingRuleRequest,
+func (a stubForwardingRulesAPI) SetLabels(ctx context.Context, req *computepb.SetLabelsGlobalForwardingRuleRequest,
 	opts ...gax.CallOption,
 ) (Operation, error) {
 	if a.deleteErr != nil {
@@ -317,7 +348,6 @@ func (a stubForwardingRulesAPI) SetLabels(ctx context.Context, req *computepb.Se
 	return &stubOperation{
 		&computepb.Operation{
 			Name: proto.String("name"),
-			Region: proto.String("region"),
 		},
 	}, nil
 }
@@ -331,7 +361,7 @@ func (a stubHealthChecksAPI) Close() error {
 	return nil
 }
 
-func (a stubHealthChecksAPI) Insert(ctx context.Context, req *computepb.InsertRegionHealthCheckRequest,
+func (a stubHealthChecksAPI) Insert(ctx context.Context, req *computepb.InsertHealthCheckRequest,
 	opts ...gax.CallOption,
 ) (Operation, error) {
 	if a.insertErr != nil {
@@ -340,12 +370,11 @@ func (a stubHealthChecksAPI) Insert(ctx context.Context, req *computepb.InsertRe
 	return &stubOperation{
 		&computepb.Operation{
 			Name: proto.String("name"),
-			Region: proto.String("region"),
 		},
 	}, nil
 }
 
-func (a stubHealthChecksAPI) Delete(ctx context.Context, req *computepb.DeleteRegionHealthCheckRequest,
+func (a stubHealthChecksAPI) Delete(ctx context.Context, req *computepb.DeleteHealthCheckRequest,
 	opts ...gax.CallOption,
 ) (Operation, error) {
 	if a.deleteErr != nil {
@@ -354,7 +383,6 @@ func (a stubHealthChecksAPI) Delete(ctx context.Context, req *computepb.DeleteRe
 	return &stubOperation{
 		&computepb.Operation{
 			Name: proto.String("name"),
-			Region: proto.String("region"),
 		},
 	}, nil
 }
@@ -511,7 +539,7 @@ type stubAddressesAPI struct {
 	deleteErr error
 }
 
-func (a stubAddressesAPI) Insert(context.Context, *computepb.InsertAddressRequest,
+func (a stubAddressesAPI) Insert(context.Context, *computepb.InsertGlobalAddressRequest,
 	...gax.CallOption,
 ) (Operation, error) {
 	if a.insertErr != nil {
@@ -520,18 +548,17 @@ func (a stubAddressesAPI) Insert(context.Context, *computepb.InsertAddressReques
 	return &stubOperation{
 		&computepb.Operation{
 			Name: proto.String("name"),
-			Region: proto.String("region"),
 		},
 	}, nil
 }
 
-func (a stubAddressesAPI) Get(ctx context.Context, req *computepb.GetAddressRequest,
+func (a stubAddressesAPI) Get(ctx context.Context, req *computepb.GetGlobalAddressRequest,
 	opts ...gax.CallOption,
 ) (*computepb.Address, error) {
 	return &computepb.Address{Address: a.getAddr}, a.getErr
 }
 
-func (a stubAddressesAPI) Delete(context.Context, *computepb.DeleteAddressRequest,
+func (a stubAddressesAPI) Delete(context.Context, *computepb.DeleteGlobalAddressRequest,
 	...gax.CallOption,
 ) (Operation, error) {
 	if a.deleteErr != nil {
@@ -540,7 +567,6 @@ func (a stubAddressesAPI) Delete(context.Context, *computepb.DeleteAddressReques
 	return &stubOperation{
 		&computepb.Operation{
 			Name: proto.String("name"),
-			Region: proto.String("region"),
 		},
 	}, nil
 }

cli/internal/gcp/client/client.go

@@ -36,6 +36,7 @@ type Client struct {
 	forwardingRulesAPI
 	backendServicesAPI
 	healthChecksAPI
+	targetTCPProxiesAPI
 	instanceTemplateAPI
 	instanceGroupManagersAPI
 	iamAPI
@@ -109,25 +110,31 @@ func NewFromDefault(ctx context.Context) (*Client, error) {
 		return nil, err
 	}
 	closers = append(closers, subnetAPI)
-	forwardingRulesAPI, err := compute.NewForwardingRulesRESTClient(ctx)
+	forwardingRulesAPI, err := compute.NewGlobalForwardingRulesRESTClient(ctx)
 	if err != nil {
 		_ = closeAll(closers)
 		return nil, err
 	}
 	closers = append(closers, forwardingRulesAPI)
-	backendServicesAPI, err := compute.NewRegionBackendServicesRESTClient(ctx)
+	backendServicesAPI, err := compute.NewBackendServicesRESTClient(ctx)
 	if err != nil {
 		_ = closeAll(closers)
 		return nil, err
 	}
 	closers = append(closers, backendServicesAPI)
+	targetTCPProxiesAPI, err := compute.NewTargetTcpProxiesRESTClient(ctx)
+	if err != nil {
+		_ = closeAll(closers)
+		return nil, err
+	}
+	closers = append(closers, targetTCPProxiesAPI)
 	targetPoolsAPI, err := compute.NewTargetPoolsRESTClient(ctx)
 	if err != nil {
 		_ = closeAll(closers)
 		return nil, err
 	}
 	closers = append(closers, targetPoolsAPI)
-	healthChecksAPI, err := compute.NewRegionHealthChecksRESTClient(ctx)
+	healthChecksAPI, err := compute.NewHealthChecksRESTClient(ctx)
 	if err != nil {
 		_ = closeAll(closers)
 		return nil, err
@@ -157,7 +164,7 @@ func NewFromDefault(ctx context.Context) (*Client, error) {
 		return nil, err
 	}
 	closers = append(closers, projectsAPI)
-	addressesAPI, err := compute.NewAddressesRESTClient(ctx)
+	addressesAPI, err := compute.NewGlobalAddressesRESTClient(ctx)
 	if err != nil {
 		_ = closeAll(closers)
 		return nil, err
@@ -173,6 +180,7 @@ func NewFromDefault(ctx context.Context) (*Client, error) {
 		firewallsAPI:             &firewallsClient{fwAPI},
 		forwardingRulesAPI:       &forwardingRulesClient{forwardingRulesAPI},
 		backendServicesAPI:       &backendServicesClient{backendServicesAPI},
+		targetTCPProxiesAPI:      &targetTCPProxiesClient{targetTCPProxiesAPI},
 		healthChecksAPI:          &healthChecksClient{healthChecksAPI},
 		instanceTemplateAPI:      &instanceTemplateClient{templAPI},
 		instanceGroupManagersAPI: &instanceGroupManagersClient{groupAPI},
@@ -282,6 +290,7 @@ func (c *Client) SetState(stat state.ConstellationState) {
 			hasForwardingRules: true,
 			hasBackendService:  true,
 			hasHealthCheck:     true,
+			hasTargetTCPProxy:  true,
 		}
 		c.loadbalancers = append(c.loadbalancers, lb)
 	}

cli/internal/gcp/client/gcpwrappers.go

@@ -53,75 +53,95 @@ func (c *firewallsClient) Insert(ctx context.Context, req *computepb.InsertFirew
 }
 
 type forwardingRulesClient struct {
-	*compute.ForwardingRulesClient
+	*compute.GlobalForwardingRulesClient
 }
 
 func (c *forwardingRulesClient) Close() error {
-	return c.ForwardingRulesClient.Close()
+	return c.GlobalForwardingRulesClient.Close()
 }
 
-func (c *forwardingRulesClient) Delete(ctx context.Context, req *computepb.DeleteForwardingRuleRequest,
+func (c *forwardingRulesClient) Delete(ctx context.Context, req *computepb.DeleteGlobalForwardingRuleRequest,
 	opts ...gax.CallOption,
 ) (Operation, error) {
-	return c.ForwardingRulesClient.Delete(ctx, req)
+	return c.GlobalForwardingRulesClient.Delete(ctx, req)
 }
 
-func (c *forwardingRulesClient) Insert(ctx context.Context, req *computepb.InsertForwardingRuleRequest,
+func (c *forwardingRulesClient) Insert(ctx context.Context, req *computepb.InsertGlobalForwardingRuleRequest,
 	opts ...gax.CallOption,
 ) (Operation, error) {
-	return c.ForwardingRulesClient.Insert(ctx, req)
+	return c.GlobalForwardingRulesClient.Insert(ctx, req)
 }
 
-func (c *forwardingRulesClient) Get(ctx context.Context, req *computepb.GetForwardingRuleRequest,
+func (c *forwardingRulesClient) Get(ctx context.Context, req *computepb.GetGlobalForwardingRuleRequest,
 	opts ...gax.CallOption,
 ) (*computepb.ForwardingRule, error) {
-	return c.ForwardingRulesClient.Get(ctx, req)
+	return c.GlobalForwardingRulesClient.Get(ctx, req)
 }
 
-func (c *forwardingRulesClient) SetLabels(ctx context.Context, req *computepb.SetLabelsForwardingRuleRequest,
+func (c *forwardingRulesClient) SetLabels(ctx context.Context, req *computepb.SetLabelsGlobalForwardingRuleRequest,
 	opts ...gax.CallOption,
 ) (Operation, error) {
-	return c.ForwardingRulesClient.SetLabels(ctx, req)
+	return c.GlobalForwardingRulesClient.SetLabels(ctx, req)
 }
 
 type backendServicesClient struct {
-	*compute.RegionBackendServicesClient
+	*compute.BackendServicesClient
 }
 
 func (c *backendServicesClient) Close() error {
-	return c.RegionBackendServicesClient.Close()
+	return c.BackendServicesClient.Close()
 }
 
-func (c *backendServicesClient) Insert(ctx context.Context, req *computepb.InsertRegionBackendServiceRequest,
+func (c *backendServicesClient) Insert(ctx context.Context, req *computepb.InsertBackendServiceRequest,
 	opts ...gax.CallOption,
 ) (Operation, error) {
-	return c.RegionBackendServicesClient.Insert(ctx, req)
+	return c.BackendServicesClient.Insert(ctx, req)
 }
 
-func (c *backendServicesClient) Delete(ctx context.Context, req *computepb.DeleteRegionBackendServiceRequest,
+func (c *backendServicesClient) Delete(ctx context.Context, req *computepb.DeleteBackendServiceRequest,
 	opts ...gax.CallOption,
 ) (Operation, error) {
-	return c.RegionBackendServicesClient.Delete(ctx, req)
+	return c.BackendServicesClient.Delete(ctx, req)
+}
+
+type targetTCPProxiesClient struct {
+	*compute.TargetTcpProxiesClient
+}
+
+func (c *targetTCPProxiesClient) Close() error {
+	return c.TargetTcpProxiesClient.Close()
+}
+
+func (c *targetTCPProxiesClient) Delete(ctx context.Context, req *computepb.DeleteTargetTcpProxyRequest,
+	opts ...gax.CallOption,
+) (Operation, error) {
+	return c.TargetTcpProxiesClient.Delete(ctx, req)
+}
+
+func (c *targetTCPProxiesClient) Insert(ctx context.Context, req *computepb.InsertTargetTcpProxyRequest,
+	opts ...gax.CallOption,
+) (Operation, error) {
+	return c.TargetTcpProxiesClient.Insert(ctx, req)
 }
 
 type healthChecksClient struct {
-	*compute.RegionHealthChecksClient
+	*compute.HealthChecksClient
 }
 
 func (c *healthChecksClient) Close() error {
-	return c.RegionHealthChecksClient.Close()
+	return c.HealthChecksClient.Close()
 }
 
-func (c *healthChecksClient) Delete(ctx context.Context, req *computepb.DeleteRegionHealthCheckRequest,
+func (c *healthChecksClient) Delete(ctx context.Context, req *computepb.DeleteHealthCheckRequest,
 	opts ...gax.CallOption,
 ) (Operation, error) {
-	return c.RegionHealthChecksClient.Delete(ctx, req)
+	return c.HealthChecksClient.Delete(ctx, req)
 }
 
-func (c *healthChecksClient) Insert(ctx context.Context, req *computepb.InsertRegionHealthCheckRequest,
+func (c *healthChecksClient) Insert(ctx context.Context, req *computepb.InsertHealthCheckRequest,
 	opts ...gax.CallOption,
 ) (Operation, error) {
-	return c.RegionHealthChecksClient.Insert(ctx, req)
+	return c.HealthChecksClient.Insert(ctx, req)
 }
 
 type networksClient struct {
@@ -257,21 +277,21 @@ func (c *projectsClient) SetIamPolicy(ctx context.Context, req *iampb.SetIamPoli
 }
 
 type addressesClient struct {
-	*compute.AddressesClient
+	*compute.GlobalAddressesClient
 }
 
-func (c *addressesClient) Insert(ctx context.Context, req *computepb.InsertAddressRequest,
+func (c *addressesClient) Insert(ctx context.Context, req *computepb.InsertGlobalAddressRequest,
 	opts ...gax.CallOption,
 ) (Operation, error) {
-	return c.AddressesClient.Insert(ctx, req)
+	return c.GlobalAddressesClient.Insert(ctx, req)
 }
 
-func (c *addressesClient) Delete(ctx context.Context, req *computepb.DeleteAddressRequest,
+func (c *addressesClient) Delete(ctx context.Context, req *computepb.DeleteGlobalAddressRequest,
 	opts ...gax.CallOption,
 ) (Operation, error) {
-	return c.AddressesClient.Delete(ctx, req)
+	return c.GlobalAddressesClient.Delete(ctx, req)
 }
 
 func (c *addressesClient) Close() error {
-	return c.AddressesClient.Close()
+	return c.GlobalAddressesClient.Close()
 }

cli/internal/gcp/client/instances.go

@@ -90,6 +90,7 @@ func (c *Client) CreateInstances(ctx context.Context, input CreateInstancesInput
 			{Name: proto.String("debugd"), Port: proto.Int32(constants.DebugdPort)},
 			{Name: proto.String("bootstrapper"), Port: proto.Int32(constants.BootstrapperPort)},
 			{Name: proto.String("verify"), Port: proto.Int32(constants.VerifyServiceNodePortGRPC)},
+			{Name: proto.String("konnectivity"), Port: proto.Int32(constants.KonnectivityPort)},
 		},
 		Template: c.controlPlaneTemplate,
 		UID:      c.uid,

cli/internal/gcp/client/loadbalancer.go

@@ -32,6 +32,7 @@ type loadBalancer struct {
 	hasHealthCheck     bool
 	hasBackendService  bool
 	hasForwardingRules bool
+	hasTargetTCPProxy  bool
 }
 
 // CreateLoadBalancers creates all necessary load balancers.
@@ -69,6 +70,14 @@ func (c *Client) CreateLoadBalancers(ctx context.Context, isDebugCluster bool) e
 		healthCheck:     computepb.HealthCheck_TCP,
 	})
 
+	c.loadbalancers = append(c.loadbalancers, &loadBalancer{
+		name:            c.buildResourceName("konnectivity"),
+		ip:              c.loadbalancerIPname,
+		frontendPort:    constants.KonnectivityPort,
+		backendPortName: "konnectivity",
+		healthCheck:     computepb.HealthCheck_TCP,
+	})
+
 	// Only create when the debug cluster flag is set in the Constellation config
 	if isDebugCluster {
 		c.loadbalancers = append(c.loadbalancers, &loadBalancer{
@@ -107,6 +116,9 @@ func (c *Client) createLoadBalancer(ctx context.Context, lb *loadBalancer) error
 	if err := c.createBackendService(ctx, lb); err != nil {
 		return fmt.Errorf("creating backend services: %w", err)
 	}
+	if err := c.createTargetTCPProxy(ctx, lb); err != nil {
+		return fmt.Errorf("creating target TCP proxies: %w", err)
+	}
 	if err := c.createForwardingRules(ctx, lb); err != nil {
 		return fmt.Errorf("creating forwarding rules: %w", err)
 	}
@@ -114,9 +126,8 @@ func (c *Client) createLoadBalancer(ctx context.Context, lb *loadBalancer) error
 }
 
 func (c *Client) createHealthCheck(ctx context.Context, lb *loadBalancer) error {
-	req := &computepb.InsertRegionHealthCheckRequest{
+	req := &computepb.InsertHealthCheckRequest{
 		Project: c.project,
-		Region:  c.region,
 		HealthCheckResource: &computepb.HealthCheck{
 			Name:             proto.String(lb.name),
 			Type:             proto.String(computepb.HealthCheck_Type_name[int32(lb.healthCheck)]),
@@ -144,18 +155,17 @@ func (c *Client) createHealthCheck(ctx context.Context, lb *loadBalancer) error
 }
 
 func (c *Client) createBackendService(ctx context.Context, lb *loadBalancer) error {
-	req := &computepb.InsertRegionBackendServiceRequest{
+	req := &computepb.InsertBackendServiceRequest{
 		Project: c.project,
-		Region:  c.region,
 		BackendServiceResource: &computepb.BackendService{
 			Name:                proto.String(lb.name),
 			Protocol:            proto.String(computepb.BackendService_Protocol_name[int32(computepb.BackendService_TCP)]),
 			LoadBalancingScheme: proto.String(computepb.BackendService_LoadBalancingScheme_name[int32(computepb.BackendService_EXTERNAL)]),
-			HealthChecks:        []string{c.resourceURI(scopeRegion, "healthChecks", lb.name)},
+			HealthChecks:        []string{c.resourceURI(scopeGlobal, "healthChecks", lb.name)},
 			PortName:            proto.String(lb.backendPortName),
 			Backends: []*computepb.Backend{
 				{
-					BalancingMode: proto.String(computepb.Backend_BalancingMode_name[int32(computepb.Backend_CONNECTION)]),
+					BalancingMode: proto.String(computepb.Backend_BalancingMode_name[int32(computepb.Backend_UTILIZATION)]),
 					Group:         proto.String(c.resourceURI(scopeZone, "instanceGroups", c.controlPlaneInstanceGroup)),
 				},
 			},
@@ -175,16 +185,16 @@ func (c *Client) createBackendService(ctx context.Context, lb *loadBalancer) err
 }
 
 func (c *Client) createForwardingRules(ctx context.Context, lb *loadBalancer) error {
-	req := &computepb.InsertForwardingRuleRequest{
+	req := &computepb.InsertGlobalForwardingRuleRequest{
 		Project: c.project,
-		Region:  c.region,
 		ForwardingRuleResource: &computepb.ForwardingRule{
 			Name:                proto.String(lb.name),
-			IPAddress:           proto.String(c.resourceURI(scopeRegion, "addresses", c.loadbalancerIPname)),
+			IPAddress:           proto.String(c.resourceURI(scopeGlobal, "addresses", c.loadbalancerIPname)),
 			IPProtocol:          proto.String(computepb.ForwardingRule_IPProtocolEnum_name[int32(computepb.ForwardingRule_TCP)]),
 			LoadBalancingScheme: proto.String(computepb.ForwardingRule_LoadBalancingScheme_name[int32(computepb.ForwardingRule_EXTERNAL)]),
-			Ports:               []string{strconv.Itoa(lb.frontendPort)},
+			PortRange:           proto.String(strconv.Itoa(lb.frontendPort)),
-			BackendService:      proto.String(c.resourceURI(scopeRegion, "backendServices", lb.name)),
+
+			Target: proto.String(c.resourceURI(scopeGlobal, "targetTcpProxies", lb.name)),
 		},
 	}
 	resp, err := c.forwardingRulesAPI.Insert(ctx, req)
@@ -205,9 +215,8 @@ func (c *Client) createForwardingRules(ctx context.Context, lb *loadBalancer) er
 
 // labelLoadBalancer labels a load balancer (its forwarding rules) so that it can be found by applications in the cluster.
 func (c *Client) labelLoadBalancer(ctx context.Context, name string) error {
-	forwardingRule, err := c.forwardingRulesAPI.Get(ctx, &computepb.GetForwardingRuleRequest{
+	forwardingRule, err := c.forwardingRulesAPI.Get(ctx, &computepb.GetGlobalForwardingRuleRequest{
 		Project:        c.project,
-		Region:         c.region,
 		ForwardingRule: name,
 	})
 	if err != nil {
@@ -217,11 +226,10 @@ func (c *Client) labelLoadBalancer(ctx context.Context, name string) error {
 		return fmt.Errorf("forwarding rule %s has no label fingerprint", name)
 	}
 
-	resp, err := c.forwardingRulesAPI.SetLabels(ctx, &computepb.SetLabelsForwardingRuleRequest{
+	resp, err := c.forwardingRulesAPI.SetLabels(ctx, &computepb.SetLabelsGlobalForwardingRuleRequest{
 		Project:  c.project,
-		Region:   c.region,
 		Resource: name,
-		RegionSetLabelsRequestResource: &computepb.RegionSetLabelsRequest{
+		GlobalSetLabelsRequestResource: &computepb.GlobalSetLabelsRequest{
 			Labels:           map[string]string{"constellation-uid": c.uid},
 			LabelFingerprint: forwardingRule.LabelFingerprint,
 		},
@@ -233,6 +241,26 @@ func (c *Client) labelLoadBalancer(ctx context.Context, name string) error {
 	return c.waitForOperations(ctx, []Operation{resp})
 }
 
+func (c *Client) createTargetTCPProxy(ctx context.Context, lb *loadBalancer) error {
+	req := &computepb.InsertTargetTcpProxyRequest{
+		Project: c.project,
+		TargetTcpProxyResource: &computepb.TargetTcpProxy{
+			Name:    proto.String(lb.name),
+			Service: proto.String(c.resourceURI(scopeGlobal, "backendServices", lb.name)),
+		},
+	}
+	resp, err := c.targetTCPProxiesAPI.Insert(ctx, req)
+	if err != nil {
+		return fmt.Errorf("inserting target tcp proxy: %w", err)
+	}
+
+	if err := c.waitForOperations(ctx, []Operation{resp}); err != nil {
+		return err
+	}
+	lb.hasTargetTCPProxy = true
+	return nil
+}
+
 // TerminateLoadBalancers terminates all load balancers.
 func (c *Client) TerminateLoadBalancers(ctx context.Context) error {
 	errC := make(chan error)
@@ -276,6 +304,12 @@ func (c *Client) terminateLoadBalancer(ctx context.Context, lb *loadBalancer) er
 		}
 	}
 
+	if lb.hasTargetTCPProxy {
+		if err := c.terminateTargetTCPProxy(ctx, lb); err != nil {
+			return fmt.Errorf("terminating target tcp proxy: %w", err)
+		}
+	}
+
 	if lb.hasBackendService {
 		if err := c.terminateBackendService(ctx, lb); err != nil {
 			return fmt.Errorf("terminating backend services: %w", err)
@@ -293,9 +327,8 @@ func (c *Client) terminateLoadBalancer(ctx context.Context, lb *loadBalancer) er
 }
 
 func (c *Client) terminateForwadingRules(ctx context.Context, lb *loadBalancer) error {
-	resp, err := c.forwardingRulesAPI.Delete(ctx, &computepb.DeleteForwardingRuleRequest{
+	resp, err := c.forwardingRulesAPI.Delete(ctx, &computepb.DeleteGlobalForwardingRuleRequest{
 		Project:        c.project,
-		Region:         c.region,
 		ForwardingRule: lb.name,
 	})
 	if isNotFoundError(err) {
@@ -314,10 +347,30 @@ func (c *Client) terminateForwadingRules(ctx context.Context, lb *loadBalancer)
 	return nil
 }
 
-func (c *Client) terminateBackendService(ctx context.Context, lb *loadBalancer) error {
+func (c *Client) terminateTargetTCPProxy(ctx context.Context, lb *loadBalancer) error {
-	resp, err := c.backendServicesAPI.Delete(ctx, &computepb.DeleteRegionBackendServiceRequest{
+	resp, err := c.targetTCPProxiesAPI.Delete(ctx, &computepb.DeleteTargetTcpProxyRequest{
+		Project:        c.project,
+		TargetTcpProxy: lb.name,
+	})
+	if isNotFoundError(err) {
+		lb.hasTargetTCPProxy = false
+		return nil
+	}
+	if err != nil {
+		return fmt.Errorf("deleting target tcp proxy: %w", err)
+	}
+
+	if err := c.waitForOperations(ctx, []Operation{resp}); err != nil {
+		return err
+	}
+
+	lb.hasTargetTCPProxy = false
+	return nil
+}
+
+func (c *Client) terminateBackendService(ctx context.Context, lb *loadBalancer) error {
+	resp, err := c.backendServicesAPI.Delete(ctx, &computepb.DeleteBackendServiceRequest{
 		Project:        c.project,
-		Region:         c.region,
 		BackendService: lb.name,
 	})
 	if isNotFoundError(err) {
@@ -337,9 +390,8 @@ func (c *Client) terminateBackendService(ctx context.Context, lb *loadBalancer)
 }
 
 func (c *Client) terminateHealthCheck(ctx context.Context, lb *loadBalancer) error {
-	resp, err := c.healthChecksAPI.Delete(ctx, &computepb.DeleteRegionHealthCheckRequest{
+	resp, err := c.healthChecksAPI.Delete(ctx, &computepb.DeleteHealthCheckRequest{
 		Project:     c.project,
-		Region:      c.region,
 		HealthCheck: lb.name,
 	})
 	if isNotFoundError(err) {
@@ -360,9 +412,8 @@ func (c *Client) terminateHealthCheck(ctx context.Context, lb *loadBalancer) err
 
 func (c *Client) createIPAddr(ctx context.Context) error {
 	ipName := c.buildResourceName()
-	insertReq := &computepb.InsertAddressRequest{
+	insertReq := &computepb.InsertGlobalAddressRequest{
 		Project: c.project,
-		Region:  c.region,
 		AddressResource: &computepb.Address{
 			Name: proto.String(ipName),
 		},
@@ -376,9 +427,8 @@ func (c *Client) createIPAddr(ctx context.Context) error {
 	}
 	c.loadbalancerIPname = ipName
 
-	getReq := &computepb.GetAddressRequest{
+	getReq := &computepb.GetGlobalAddressRequest{
 		Project: c.project,
-		Region:  c.region,
 		Address: c.loadbalancerIPname,
 	}
 	addr, err := c.addressesAPI.Get(ctx, getReq)
@@ -398,9 +448,8 @@ func (c *Client) deleteIPAddr(ctx context.Context) error {
 		return nil
 	}
 
-	req := &computepb.DeleteAddressRequest{
+	req := &computepb.DeleteGlobalAddressRequest{
 		Project: c.project,
-		Region:  c.region,
 		Address: c.loadbalancerIPname,
 	}
 	op, err := c.addressesAPI.Delete(ctx, req)

cli/internal/gcp/client/loadbalancer_test.go

@@ -27,8 +27,9 @@ func TestCreateLoadBalancers(t *testing.T) {
 		addrAPI        addressesAPI
 		healthAPI      healthChecksAPI
 		backendAPI     backendServicesAPI
+		proxyAPI       targetTCPProxiesAPI
 		forwardAPI     forwardingRulesAPI
-		opRegAPI       operationRegionAPI
+		operationAPI   operationGlobalAPI
 		isDebugCluster bool
 		wantErr        bool
 	}{
@@ -36,31 +37,44 @@ func TestCreateLoadBalancers(t *testing.T) {
 			addrAPI:      &stubAddressesAPI{getAddr: proto.String("192.0.2.1")},
 			healthAPI:    &stubHealthChecksAPI{},
 			backendAPI:   &stubBackendServicesAPI{},
+			proxyAPI:     &stubTargetTCPProxiesAPI{},
 			forwardAPI:   &stubForwardingRulesAPI{forwardingRule: forwardingRule},
-			opRegAPI:   stubOperationRegionAPI{},
+			operationAPI: stubOperationGlobalAPI{},
 		},
 		"successful create (debug cluster)": {
 			addrAPI:        &stubAddressesAPI{getAddr: proto.String("192.0.2.1")},
 			healthAPI:      &stubHealthChecksAPI{},
 			backendAPI:     &stubBackendServicesAPI{},
+			proxyAPI:       &stubTargetTCPProxiesAPI{},
 			forwardAPI:     &stubForwardingRulesAPI{forwardingRule: forwardingRule},
-			opRegAPI:       stubOperationRegionAPI{},
+			operationAPI:   stubOperationGlobalAPI{},
 			isDebugCluster: true,
 		},
 		"createIPAddr fails": {
 			addrAPI:      &stubAddressesAPI{insertErr: someErr},
 			healthAPI:    &stubHealthChecksAPI{},
 			backendAPI:   &stubBackendServicesAPI{},
+			proxyAPI:     &stubTargetTCPProxiesAPI{},
 			forwardAPI:   &stubForwardingRulesAPI{forwardingRule: forwardingRule},
-			opRegAPI:   stubOperationRegionAPI{},
+			operationAPI: stubOperationGlobalAPI{},
 			wantErr:      true,
 		},
 		"createLB fails": {
 			addrAPI:      &stubAddressesAPI{},
 			healthAPI:    &stubHealthChecksAPI{},
 			backendAPI:   &stubBackendServicesAPI{insertErr: someErr},
+			proxyAPI:     &stubTargetTCPProxiesAPI{},
 			forwardAPI:   &stubForwardingRulesAPI{forwardingRule: forwardingRule},
-			opRegAPI:   stubOperationRegionAPI{},
+			operationAPI: stubOperationGlobalAPI{},
+			wantErr:      true,
+		},
+		"createTcpProxy fails": {
+			addrAPI:      &stubAddressesAPI{getAddr: proto.String("192.0.2.1")},
+			healthAPI:    &stubHealthChecksAPI{},
+			backendAPI:   &stubBackendServicesAPI{},
+			proxyAPI:     &stubTargetTCPProxiesAPI{insertErr: someErr},
+			forwardAPI:   &stubForwardingRulesAPI{forwardingRule: forwardingRule},
+			operationAPI: stubOperationGlobalAPI{},
 			wantErr:      true,
 		},
 	}
@@ -76,10 +90,11 @@ func TestCreateLoadBalancers(t *testing.T) {
 				name:                "name",
 				uid:                 "uid",
 				addressesAPI:        tc.addrAPI,
+				targetTCPProxiesAPI: tc.proxyAPI,
 				healthChecksAPI:     tc.healthAPI,
 				backendServicesAPI:  tc.backendAPI,
 				forwardingRulesAPI:  tc.forwardAPI,
-				operationRegionAPI: tc.opRegAPI,
+				operationGlobalAPI:  tc.operationAPI,
 			}
 
 			err := client.CreateLoadBalancers(ctx, tc.isDebugCluster)
@@ -104,10 +119,10 @@ func TestCreateLoadBalancers(t *testing.T) {
 			}
 
 			if tc.isDebugCluster {
-				assert.Equal(4, len(client.loadbalancers))
+				assert.Equal(5, len(client.loadbalancers))
 				assert.True(foundDebugdLB, "debugd loadbalancer not found in debug-mode")
 			} else {
-				assert.Equal(3, len(client.loadbalancers))
+				assert.Equal(4, len(client.loadbalancers))
 				assert.False(foundDebugdLB, "debugd loadbalancer found in non-debug mode")
 			}
 		})
@@ -117,23 +132,26 @@ func TestCreateLoadBalancers(t *testing.T) {
 func TestCreateLoadBalancer(t *testing.T) {
 	someErr := errors.New("failed")
 	testCases := map[string]struct {
-		operationRegionAPI operationRegionAPI
+		operationGlobalAPI  operationGlobalAPI
 		healthChecksAPI     healthChecksAPI
 		backendServicesAPI  backendServicesAPI
 		forwardingRulesAPI  forwardingRulesAPI
+		targetTCPProxiesAPI targetTCPProxiesAPI
 		wantErr             bool
 		wantLB              *loadBalancer
 	}{
 		"successful create": {
 			healthChecksAPI:     stubHealthChecksAPI{},
 			backendServicesAPI:  stubBackendServicesAPI{},
+			targetTCPProxiesAPI: stubTargetTCPProxiesAPI{},
 			forwardingRulesAPI:  stubForwardingRulesAPI{forwardingRule: &compute.ForwardingRule{LabelFingerprint: proto.String("fingerprint")}},
-			operationRegionAPI: stubOperationRegionAPI{},
+			operationGlobalAPI:  stubOperationGlobalAPI{},
 			wantLB: &loadBalancer{
 				name:               "name",
 				frontendPort:       1234,
 				backendPortName:    "testport",
 				hasHealthCheck:     true,
+				hasTargetTCPProxy:  true,
 				hasBackendService:  true,
 				hasForwardingRules: true,
 			},
@@ -141,14 +159,16 @@ func TestCreateLoadBalancer(t *testing.T) {
 		"successful create with label": {
 			healthChecksAPI:     stubHealthChecksAPI{},
 			backendServicesAPI:  stubBackendServicesAPI{},
+			targetTCPProxiesAPI: stubTargetTCPProxiesAPI{},
 			forwardingRulesAPI:  stubForwardingRulesAPI{forwardingRule: &compute.ForwardingRule{LabelFingerprint: proto.String("fingerprint")}},
-			operationRegionAPI: stubOperationRegionAPI{},
+			operationGlobalAPI:  stubOperationGlobalAPI{},
 			wantLB: &loadBalancer{
 				name:               "name",
 				frontendPort:       1234,
 				backendPortName:    "testport",
 				label:              true,
 				hasHealthCheck:     true,
+				hasTargetTCPProxy:  true,
 				hasBackendService:  true,
 				hasForwardingRules: true,
 			},
@@ -156,8 +176,9 @@ func TestCreateLoadBalancer(t *testing.T) {
 		"CreateLoadBalancer fails when getting forwarding rule": {
 			healthChecksAPI:     stubHealthChecksAPI{},
 			backendServicesAPI:  stubBackendServicesAPI{},
+			targetTCPProxiesAPI: stubTargetTCPProxiesAPI{},
 			forwardingRulesAPI:  stubForwardingRulesAPI{getErr: someErr},
-			operationRegionAPI: stubOperationRegionAPI{},
+			operationGlobalAPI:  stubOperationGlobalAPI{},
 			wantErr:             true,
 			wantLB: &loadBalancer{
 				name:               "name",
@@ -165,6 +186,7 @@ func TestCreateLoadBalancer(t *testing.T) {
 				backendPortName:    "testport",
 				label:              true,
 				hasHealthCheck:     true,
+				hasTargetTCPProxy:  true,
 				hasBackendService:  true,
 				hasForwardingRules: true,
 			},
@@ -172,8 +194,9 @@ func TestCreateLoadBalancer(t *testing.T) {
 		"CreateLoadBalancer fails when label fingerprint is missing": {
 			healthChecksAPI:     stubHealthChecksAPI{},
 			backendServicesAPI:  stubBackendServicesAPI{},
+			targetTCPProxiesAPI: stubTargetTCPProxiesAPI{},
 			forwardingRulesAPI:  stubForwardingRulesAPI{forwardingRule: &compute.ForwardingRule{}},
-			operationRegionAPI: stubOperationRegionAPI{},
+			operationGlobalAPI:  stubOperationGlobalAPI{},
 			wantErr:             true,
 			wantLB: &loadBalancer{
 				name:               "name",
@@ -181,6 +204,7 @@ func TestCreateLoadBalancer(t *testing.T) {
 				backendPortName:    "testport",
 				label:              true,
 				hasHealthCheck:     true,
+				hasTargetTCPProxy:  true,
 				hasBackendService:  true,
 				hasForwardingRules: true,
 			},
@@ -188,23 +212,26 @@ func TestCreateLoadBalancer(t *testing.T) {
 		"CreateLoadBalancer fails when creating health check": {
 			healthChecksAPI:     stubHealthChecksAPI{insertErr: someErr},
 			backendServicesAPI:  stubBackendServicesAPI{},
+			targetTCPProxiesAPI: stubTargetTCPProxiesAPI{},
 			forwardingRulesAPI:  stubForwardingRulesAPI{forwardingRule: &compute.ForwardingRule{LabelFingerprint: proto.String("fingerprint")}},
-			operationRegionAPI: stubOperationRegionAPI{},
+			operationGlobalAPI:  stubOperationGlobalAPI{},
 			wantErr:             true,
 			wantLB: &loadBalancer{
 				name:               "name",
 				frontendPort:       1234,
 				backendPortName:    "testport",
 				hasHealthCheck:     false,
+				hasTargetTCPProxy:  false,
 				hasBackendService:  false,
 				hasForwardingRules: false,
 			},
 		},
 		"CreateLoadBalancer fails when creating backend service": {
 			healthChecksAPI:     stubHealthChecksAPI{},
+			targetTCPProxiesAPI: stubTargetTCPProxiesAPI{},
 			backendServicesAPI:  stubBackendServicesAPI{insertErr: someErr},
 			forwardingRulesAPI:  stubForwardingRulesAPI{},
-			operationRegionAPI: stubOperationRegionAPI{},
+			operationGlobalAPI:  stubOperationGlobalAPI{},
 			wantErr:             true,
 			wantLB: &loadBalancer{
 				name:               "name",
@@ -212,14 +239,33 @@ func TestCreateLoadBalancer(t *testing.T) {
 				backendPortName:    "testport",
 				hasHealthCheck:     true,
 				hasBackendService:  false,
+				hasTargetTCPProxy:  false,
 				hasForwardingRules: false,
 			},
 		},
 		"CreateLoadBalancer fails when creating forwarding rule": {
 			healthChecksAPI:     stubHealthChecksAPI{},
 			backendServicesAPI:  stubBackendServicesAPI{},
+			targetTCPProxiesAPI: stubTargetTCPProxiesAPI{},
 			forwardingRulesAPI:  stubForwardingRulesAPI{insertErr: someErr},
-			operationRegionAPI: stubOperationRegionAPI{},
+			operationGlobalAPI:  stubOperationGlobalAPI{},
+			wantErr:             true,
+			wantLB: &loadBalancer{
+				name:               "name",
+				frontendPort:       1234,
+				backendPortName:    "testport",
+				hasHealthCheck:     true,
+				hasBackendService:  true,
+				hasTargetTCPProxy:  true,
+				hasForwardingRules: false,
+			},
+		},
+		"CreateLoadBalancer fails when creating target proxy rule": {
+			healthChecksAPI:     stubHealthChecksAPI{},
+			backendServicesAPI:  stubBackendServicesAPI{},
+			targetTCPProxiesAPI: stubTargetTCPProxiesAPI{insertErr: someErr},
+			forwardingRulesAPI:  stubForwardingRulesAPI{},
+			operationGlobalAPI:  stubOperationGlobalAPI{},
 			wantErr:             true,
 			wantLB: &loadBalancer{
 				name:               "name",
@@ -233,8 +279,9 @@ func TestCreateLoadBalancer(t *testing.T) {
 		"CreateLoadBalancer fails when waiting on operation": {
 			healthChecksAPI:     stubHealthChecksAPI{},
 			backendServicesAPI:  stubBackendServicesAPI{},
+			targetTCPProxiesAPI: stubTargetTCPProxiesAPI{},
 			forwardingRulesAPI:  stubForwardingRulesAPI{forwardingRule: &compute.ForwardingRule{LabelFingerprint: proto.String("fingerprint")}},
-			operationRegionAPI: stubOperationRegionAPI{waitErr: someErr},
+			operationGlobalAPI:  stubOperationGlobalAPI{waitErr: someErr},
 			wantErr:             true,
 			wantLB: &loadBalancer{
 				name:               "name",
@@ -259,8 +306,9 @@ func TestCreateLoadBalancer(t *testing.T) {
 				uid:                 "uid",
 				backendServicesAPI:  tc.backendServicesAPI,
 				forwardingRulesAPI:  tc.forwardingRulesAPI,
+				targetTCPProxiesAPI: tc.targetTCPProxiesAPI,
 				healthChecksAPI:     tc.healthChecksAPI,
-				operationRegionAPI: tc.operationRegionAPI,
+				operationGlobalAPI:  tc.operationGlobalAPI,
 			}
 			lb := &loadBalancer{
 				name:            tc.wantLB.name,
@@ -289,6 +337,7 @@ func TestTerminateLoadbalancers(t *testing.T) {
 			name:               "name",
 			hasHealthCheck:     true,
 			hasBackendService:  true,
+			hasTargetTCPProxy:  true,
 			hasForwardingRules: true,
 		}
 	}
@@ -297,31 +346,35 @@ func TestTerminateLoadbalancers(t *testing.T) {
 		addrAPI     addressesAPI
 		healthAPI   healthChecksAPI
 		backendAPI  backendServicesAPI
+		targetAPI   targetTCPProxiesAPI
 		forwardAPI  forwardingRulesAPI
-		opRegionAPI operationRegionAPI
+		opGlobalAPI operationGlobalAPI
 		wantErr     bool
 	}{
 		"successful terminate": {
 			addrAPI:     &stubAddressesAPI{},
 			healthAPI:   &stubHealthChecksAPI{},
 			backendAPI:  &stubBackendServicesAPI{},
+			targetAPI:   &stubTargetTCPProxiesAPI{},
 			forwardAPI:  &stubForwardingRulesAPI{},
-			opRegionAPI: stubOperationRegionAPI{},
+			opGlobalAPI: stubOperationGlobalAPI{},
 		},
 		"deleteIPAddr fails": {
 			addrAPI:     &stubAddressesAPI{deleteErr: someErr},
 			healthAPI:   &stubHealthChecksAPI{},
 			backendAPI:  &stubBackendServicesAPI{},
+			targetAPI:   &stubTargetTCPProxiesAPI{},
 			forwardAPI:  &stubForwardingRulesAPI{},
-			opRegionAPI: stubOperationRegionAPI{},
+			opGlobalAPI: stubOperationGlobalAPI{},
 			wantErr:     true,
 		},
 		"deleteLB fails": {
 			addrAPI:     &stubAddressesAPI{},
 			healthAPI:   &stubHealthChecksAPI{},
 			backendAPI:  &stubBackendServicesAPI{deleteErr: someErr},
+			targetAPI:   &stubTargetTCPProxiesAPI{},
 			forwardAPI:  &stubForwardingRulesAPI{},
-			opRegionAPI: stubOperationRegionAPI{},
+			opGlobalAPI: stubOperationGlobalAPI{},
 			wantErr:     true,
 		},
 	}
@@ -339,8 +392,9 @@ func TestTerminateLoadbalancers(t *testing.T) {
 				addressesAPI:        tc.addrAPI,
 				healthChecksAPI:     tc.healthAPI,
 				backendServicesAPI:  tc.backendAPI,
+				targetTCPProxiesAPI: tc.targetAPI,
 				forwardingRulesAPI:  tc.forwardAPI,
-				operationRegionAPI: tc.opRegionAPI,
+				operationGlobalAPI:  tc.opGlobalAPI,
 				loadbalancerIPname:  "loadbalancerIPid",
 				loadbalancers: []*loadBalancer{
 					newRunningLB(),
@@ -369,6 +423,7 @@ func TestTerminateLoadBalancer(t *testing.T) {
 		return &loadBalancer{
 			name:               "name",
 			hasHealthCheck:     true,
+			hasTargetTCPProxy:  true,
 			hasBackendService:  true,
 			hasForwardingRules: true,
 		}
@@ -376,9 +431,10 @@ func TestTerminateLoadBalancer(t *testing.T) {
 
 	testCases := map[string]struct {
 		lb                  *loadBalancer
-		opRegionAPI        operationRegionAPI
+		opGlobalAPI         operationGlobalAPI
 		healthChecksAPI     healthChecksAPI
 		backendServicesAPI  backendServicesAPI
+		targetTCPProxiesAPI targetTCPProxiesAPI
 		forwardingRulesAPI  forwardingRulesAPI
 		wantErr             bool
 		wantLB              *loadBalancer
@@ -388,7 +444,8 @@ func TestTerminateLoadBalancer(t *testing.T) {
 			healthChecksAPI:     stubHealthChecksAPI{},
 			backendServicesAPI:  stubBackendServicesAPI{},
 			forwardingRulesAPI:  stubForwardingRulesAPI{},
-			opRegionAPI:        stubOperationRegionAPI{},
+			targetTCPProxiesAPI: stubTargetTCPProxiesAPI{},
+			opGlobalAPI:         stubOperationGlobalAPI{},
 			wantLB:              &loadBalancer{},
 		},
 		"terminate partially created loadbalancer": {
@@ -401,7 +458,8 @@ func TestTerminateLoadBalancer(t *testing.T) {
 			healthChecksAPI:     stubHealthChecksAPI{},
 			backendServicesAPI:  stubBackendServicesAPI{},
 			forwardingRulesAPI:  stubForwardingRulesAPI{deleteErr: someErr},
-			opRegionAPI:        stubOperationRegionAPI{},
+			targetTCPProxiesAPI: stubTargetTCPProxiesAPI{},
+			opGlobalAPI:         stubOperationGlobalAPI{},
 			wantLB:              &loadBalancer{},
 		},
 		"terminate partially created loadbalancer 2": {
@@ -414,7 +472,8 @@ func TestTerminateLoadBalancer(t *testing.T) {
 			healthChecksAPI:     stubHealthChecksAPI{},
 			backendServicesAPI:  stubBackendServicesAPI{deleteErr: someErr},
 			forwardingRulesAPI:  stubForwardingRulesAPI{deleteErr: someErr},
-			opRegionAPI:        stubOperationRegionAPI{},
+			targetTCPProxiesAPI: stubTargetTCPProxiesAPI{},
+			opGlobalAPI:         stubOperationGlobalAPI{},
 			wantLB:              &loadBalancer{},
 		},
 		"no-op for nil loadbalancer": {
@@ -425,7 +484,8 @@ func TestTerminateLoadBalancer(t *testing.T) {
 			healthChecksAPI:     stubHealthChecksAPI{deleteErr: notFoundErr},
 			backendServicesAPI:  stubBackendServicesAPI{},
 			forwardingRulesAPI:  stubForwardingRulesAPI{},
-			opRegionAPI:        stubOperationRegionAPI{},
+			targetTCPProxiesAPI: stubTargetTCPProxiesAPI{},
+			opGlobalAPI:         stubOperationGlobalAPI{},
 			wantLB:              &loadBalancer{},
 		},
 		"backend service not found": {
@@ -433,7 +493,8 @@ func TestTerminateLoadBalancer(t *testing.T) {
 			healthChecksAPI:     stubHealthChecksAPI{},
 			backendServicesAPI:  stubBackendServicesAPI{deleteErr: notFoundErr},
 			forwardingRulesAPI:  stubForwardingRulesAPI{},
-			opRegionAPI:        stubOperationRegionAPI{},
+			targetTCPProxiesAPI: stubTargetTCPProxiesAPI{},
+			opGlobalAPI:         stubOperationGlobalAPI{},
 			wantLB:              &loadBalancer{},
 		},
 		"forwarding rules not found": {
@@ -441,7 +502,8 @@ func TestTerminateLoadBalancer(t *testing.T) {
 			healthChecksAPI:     stubHealthChecksAPI{},
 			backendServicesAPI:  stubBackendServicesAPI{},
 			forwardingRulesAPI:  stubForwardingRulesAPI{deleteErr: notFoundErr},
-			opRegionAPI:        stubOperationRegionAPI{},
+			targetTCPProxiesAPI: stubTargetTCPProxiesAPI{},
+			opGlobalAPI:         stubOperationGlobalAPI{},
 			wantLB:              &loadBalancer{},
 		},
 		"fails for loadbalancer without name": {
@@ -454,13 +516,15 @@ func TestTerminateLoadBalancer(t *testing.T) {
 			healthChecksAPI:     stubHealthChecksAPI{deleteErr: someErr},
 			backendServicesAPI:  stubBackendServicesAPI{},
 			forwardingRulesAPI:  stubForwardingRulesAPI{},
-			opRegionAPI:        stubOperationRegionAPI{},
+			targetTCPProxiesAPI: stubTargetTCPProxiesAPI{},
+			opGlobalAPI:         stubOperationGlobalAPI{},
 			wantErr:             true,
 			wantLB: &loadBalancer{
 				name:               "name",
 				hasHealthCheck:     true,
 				hasBackendService:  false,
 				hasForwardingRules: false,
+				hasTargetTCPProxy:  false,
 			},
 		},
 		"fails when deleting backend service": {
@@ -468,13 +532,15 @@ func TestTerminateLoadBalancer(t *testing.T) {
 			healthChecksAPI:     stubHealthChecksAPI{},
 			backendServicesAPI:  stubBackendServicesAPI{deleteErr: someErr},
 			forwardingRulesAPI:  stubForwardingRulesAPI{},
-			opRegionAPI:        stubOperationRegionAPI{},
+			targetTCPProxiesAPI: stubTargetTCPProxiesAPI{},
+			opGlobalAPI:         stubOperationGlobalAPI{},
 			wantErr:             true,
 			wantLB: &loadBalancer{
 				name:               "name",
 				hasHealthCheck:     true,
 				hasBackendService:  true,
 				hasForwardingRules: false,
+				hasTargetTCPProxy:  false,
 			},
 		},
 		"fails when deleting forwarding rule": {
@@ -482,13 +548,31 @@ func TestTerminateLoadBalancer(t *testing.T) {
 			healthChecksAPI:     stubHealthChecksAPI{},
 			backendServicesAPI:  stubBackendServicesAPI{},
 			forwardingRulesAPI:  stubForwardingRulesAPI{deleteErr: someErr},
-			opRegionAPI:        stubOperationRegionAPI{},
+			targetTCPProxiesAPI: stubTargetTCPProxiesAPI{},
+			opGlobalAPI:         stubOperationGlobalAPI{},
 			wantErr:             true,
 			wantLB: &loadBalancer{
 				name:               "name",
 				hasHealthCheck:     true,
 				hasBackendService:  true,
 				hasForwardingRules: true,
+				hasTargetTCPProxy:  true,
+			},
+		},
+		"fails when deleting tcp proxy rule": {
+			lb:                  newRunningLB(),
+			healthChecksAPI:     stubHealthChecksAPI{},
+			backendServicesAPI:  stubBackendServicesAPI{},
+			forwardingRulesAPI:  stubForwardingRulesAPI{},
+			targetTCPProxiesAPI: stubTargetTCPProxiesAPI{deleteErr: someErr},
+			opGlobalAPI:         stubOperationGlobalAPI{},
+			wantErr:             true,
+			wantLB: &loadBalancer{
+				name:               "name",
+				hasHealthCheck:     true,
+				hasBackendService:  true,
+				hasForwardingRules: false,
+				hasTargetTCPProxy:  true,
 			},
 		},
 		"fails when waiting on operation": {
@@ -496,13 +580,15 @@ func TestTerminateLoadBalancer(t *testing.T) {
 			healthChecksAPI:     stubHealthChecksAPI{},
 			backendServicesAPI:  stubBackendServicesAPI{},
 			forwardingRulesAPI:  stubForwardingRulesAPI{},
-			opRegionAPI:        stubOperationRegionAPI{waitErr: someErr},
+			targetTCPProxiesAPI: stubTargetTCPProxiesAPI{},
+			opGlobalAPI:         stubOperationGlobalAPI{waitErr: someErr},
 			wantErr:             true,
 			wantLB: &loadBalancer{
 				name:               "name",
 				hasHealthCheck:     true,
 				hasBackendService:  true,
 				hasForwardingRules: true,
+				hasTargetTCPProxy:  true,
 			},
 		},
 	}
@@ -520,7 +606,8 @@ func TestTerminateLoadBalancer(t *testing.T) {
 				backendServicesAPI:  tc.backendServicesAPI,
 				forwardingRulesAPI:  tc.forwardingRulesAPI,
 				healthChecksAPI:     tc.healthChecksAPI,
-				operationRegionAPI: tc.opRegionAPI,
+				targetTCPProxiesAPI: tc.targetTCPProxiesAPI,
+				operationGlobalAPI:  tc.opGlobalAPI,
 			}
 
 			err := client.terminateLoadBalancer(ctx, tc.lb)
@@ -541,31 +628,31 @@ func TestCreateIPAddr(t *testing.T) {
 
 	testCases := map[string]struct {
 		addrAPI addressesAPI
-		opAPI   operationRegionAPI
+		opAPI   operationGlobalAPI
 		wantErr bool
 	}{
 		"successful create": {
 			addrAPI: stubAddressesAPI{getAddr: proto.String("test-ip")},
-			opAPI:   stubOperationRegionAPI{},
+			opAPI:   stubOperationGlobalAPI{},
 		},
 		"insert fails": {
 			addrAPI: stubAddressesAPI{insertErr: someErr},
-			opAPI:   stubOperationRegionAPI{},
+			opAPI:   stubOperationGlobalAPI{},
 			wantErr: true,
 		},
 		"get fails": {
 			addrAPI: stubAddressesAPI{getErr: someErr},
-			opAPI:   stubOperationRegionAPI{},
+			opAPI:   stubOperationGlobalAPI{},
 			wantErr: true,
 		},
 		"get address nil": {
 			addrAPI: stubAddressesAPI{getAddr: nil},
-			opAPI:   stubOperationRegionAPI{},
+			opAPI:   stubOperationGlobalAPI{},
 			wantErr: true,
 		},
 		"wait fails": {
 			addrAPI: stubAddressesAPI{},
-			opAPI:   stubOperationRegionAPI{waitErr: someErr},
+			opAPI:   stubOperationGlobalAPI{waitErr: someErr},
 			wantErr: true,
 		},
 	}
@@ -581,7 +668,7 @@ func TestCreateIPAddr(t *testing.T) {
 				name:               "name",
 				uid:                "uid",
 				addressesAPI:       tc.addrAPI,
-				operationRegionAPI: tc.opAPI,
+				operationGlobalAPI: tc.opAPI,
 			}
 
 			err := client.createIPAddr(ctx)
@@ -603,33 +690,33 @@ func TestDeleteIPAddr(t *testing.T) {
 
 	testCases := map[string]struct {
 		addrAPI addressesAPI
-		opAPI   operationRegionAPI
+		opAPI   operationGlobalAPI
 		addrID  string
 		wantErr bool
 	}{
 		"successful delete": {
 			addrAPI: stubAddressesAPI{},
-			opAPI:   stubOperationRegionAPI{},
+			opAPI:   stubOperationGlobalAPI{},
 			addrID:  "name",
 		},
 		"not found": {
 			addrAPI: stubAddressesAPI{deleteErr: notFoundErr},
-			opAPI:   stubOperationRegionAPI{},
+			opAPI:   stubOperationGlobalAPI{},
 			addrID:  "name",
 		},
 		"empty is no-op": {
 			addrAPI: stubAddressesAPI{},
-			opAPI:   stubOperationRegionAPI{},
+			opAPI:   stubOperationGlobalAPI{},
 		},
 		"delete fails": {
 			addrAPI: stubAddressesAPI{deleteErr: someErr},
-			opAPI:   stubOperationRegionAPI{},
+			opAPI:   stubOperationGlobalAPI{},
 			addrID:  "name",
 			wantErr: true,
 		},
 		"wait fails": {
 			addrAPI: stubAddressesAPI{},
-			opAPI:   stubOperationRegionAPI{waitErr: someErr},
+			opAPI:   stubOperationGlobalAPI{waitErr: someErr},
 			addrID:  "name",
 			wantErr: true,
 		},
@@ -646,7 +733,7 @@ func TestDeleteIPAddr(t *testing.T) {
 				name:               "name",
 				uid:                "uid",
 				addressesAPI:       tc.addrAPI,
-				operationRegionAPI: tc.opAPI,
+				operationGlobalAPI: tc.opAPI,
 				loadbalancerIPname: tc.addrID,
 			}
 

debugd/cmd/debugd/debugd.go

@@ -23,9 +23,7 @@ import (
 	platform "github.com/edgelesssys/constellation/internal/cloud/cloudprovider"
 	"github.com/edgelesssys/constellation/internal/deploy/ssh"
 	"github.com/edgelesssys/constellation/internal/deploy/user"
-	"github.com/edgelesssys/constellation/internal/iproute"
 	"github.com/edgelesssys/constellation/internal/logger"
-	"github.com/edgelesssys/constellation/internal/role"
 	"github.com/spf13/afero"
 )
 
@@ -69,9 +67,6 @@ func main() {
 			log.Fatalf("%s", err)
 		}
 		fetcher = gcpFetcher
-		if err := setLoadbalancerRoute(ctx, fetcher); err != nil {
-			log.Errorf("adding load balancer IP to local routing table: %s", err)
-		}
 		log.Infof("Added load balancer IP to local routing table")
 	case platform.QEMU:
 		fetcher = cloudprovider.NewQEMU()
@@ -108,18 +103,3 @@ func writeDebugBanner(log *logger.Logger) {
 		log.Infof("Unable to print to /dev/ttyS0: %v", err)
 	}
 }
-
-func setLoadbalancerRoute(ctx context.Context, fetcher metadata.Fetcher) error {
-	ownRole, err := fetcher.Role(ctx)
-	if err != nil {
-		return err
-	}
-	if ownRole != role.ControlPlane {
-		return nil
-	}
-	ip, err := fetcher.DiscoverLoadbalancerIP(ctx)
-	if err != nil {
-		return err
-	}
-	return iproute.AddToLocalRoutingTable(ctx, ip)
-}

internal/cloud/gcp/api.go

@@ -29,7 +29,7 @@ type subnetworkAPI interface {
 }
 
 type forwardingRulesAPI interface {
-	List(ctx context.Context, req *computepb.ListForwardingRulesRequest, opts ...gax.CallOption) ForwardingRuleIterator
+	List(ctx context.Context, req *computepb.ListGlobalForwardingRulesRequest, opts ...gax.CallOption) ForwardingRuleIterator
 	Close() error
 }
 

internal/cloud/gcp/client.go

@@ -47,7 +47,7 @@ func NewClient(ctx context.Context) (*Client, error) {
 	if err != nil {
 		return nil, err
 	}
-	forwardingRulesAPI, err := compute.NewForwardingRulesRESTClient(ctx)
+	forwardingRulesAPI, err := compute.NewGlobalForwardingRulesRESTClient(ctx)
 	if err != nil {
 		return nil, err
 	}
@@ -222,20 +222,14 @@ func (c *Client) RetrieveSubnetworkAliasCIDR(ctx context.Context, project, zone,
 }
 
 // RetrieveLoadBalancerEndpoint returns the endpoint of the load balancer with the constellation-uid tag.
-func (c *Client) RetrieveLoadBalancerEndpoint(ctx context.Context, project, zone string) (string, error) {
+func (c *Client) RetrieveLoadBalancerEndpoint(ctx context.Context, project string) (string, error) {
 	uid, err := c.UID()
 	if err != nil {
 		return "", err
 	}
 
-	region := zoneFromRegionRegex.FindString(zone)
+	req := &computepb.ListGlobalForwardingRulesRequest{
-	if region == "" {
-		return "", fmt.Errorf("invalid zone %s", zone)
-	}
-
-	req := &computepb.ListForwardingRulesRequest{
 		Project: project,
-		Region:  region,
 	}
 	iter := c.forwardingRulesAPI.List(ctx, req)
 	for {
@@ -247,10 +241,11 @@ func (c *Client) RetrieveLoadBalancerEndpoint(ctx context.Context, project, zone
 			return "", fmt.Errorf("retrieving load balancer IP failed: %w", err)
 		}
 		if resp.Labels["constellation-uid"] == uid {
-			if len(resp.Ports) == 0 {
+			if resp.PortRange == nil {
 				return "", errors.New("load balancer with searched UID has no ports")
 			}
-			return net.JoinHostPort(*resp.IPAddress, resp.Ports[0]), nil
+			portRange := strings.Split(*resp.PortRange, "-")
+			return net.JoinHostPort(*resp.IPAddress, portRange[0]), nil
 		}
 	}
 

internal/cloud/gcp/client_test.go

@@ -796,7 +796,7 @@ func TestRetrieveLoadBalancerEndpoint(t *testing.T) {
 					rules: []*computepb.ForwardingRule{
 						{
 							IPAddress: proto.String(loadBalancerIP),
-							Ports:     []string{"100"},
+							PortRange: proto.String("100-100"),
 							Labels:    map[string]string{"constellation-uid": uid},
 						},
 					},
@@ -811,7 +811,7 @@ func TestRetrieveLoadBalancerEndpoint(t *testing.T) {
 					rules: []*computepb.ForwardingRule{
 						{
 							IPAddress: proto.String(loadBalancerIP),
-							Ports:     []string{"100"},
+							PortRange: proto.String("100-100"),
 						},
 					},
 				},
@@ -825,7 +825,7 @@ func TestRetrieveLoadBalancerEndpoint(t *testing.T) {
 					rules: []*computepb.ForwardingRule{
 						{
 							IPAddress: proto.String(loadBalancerIP),
-							Ports:     []string{"100"},
+							PortRange: proto.String("100-100"),
 							Labels:    map[string]string{"constellation-uid": uid},
 						},
 					},
@@ -855,7 +855,7 @@ func TestRetrieveLoadBalancerEndpoint(t *testing.T) {
 					rules: []*computepb.ForwardingRule{
 						{
 							IPAddress: proto.String(loadBalancerIP),
-							Ports:     []string{"100"},
+							PortRange: proto.String("100-100"),
 							Labels:    map[string]string{"constellation-uid": uid},
 						},
 					},
@@ -870,7 +870,7 @@ func TestRetrieveLoadBalancerEndpoint(t *testing.T) {
 			require := require.New(t)
 
 			client := Client{forwardingRulesAPI: tc.stubForwardingRulesClient, metadataAPI: tc.stubMetadataClient}
-			aliasCIDR, err := client.RetrieveLoadBalancerEndpoint(context.Background(), "project", "us-central1-a")
+			aliasCIDR, err := client.RetrieveLoadBalancerEndpoint(context.Background(), "project")
 
 			if tc.wantErr {
 				assert.Error(err)
@@ -1038,7 +1038,7 @@ type stubForwardingRulesClient struct {
 	CloseErr               error
 }
 
-func (s stubForwardingRulesClient) List(ctx context.Context, req *computepb.ListForwardingRulesRequest, opts ...gax.CallOption) ForwardingRuleIterator {
+func (s stubForwardingRulesClient) List(ctx context.Context, req *computepb.ListGlobalForwardingRulesRequest, opts ...gax.CallOption) ForwardingRuleIterator {
 	return s.ForwardingRuleIterator
 }
 

internal/cloud/gcp/metadata.go

@@ -33,7 +33,7 @@ type API interface {
 	// RetrieveSubnetworkAliasCIDR retrieves the subnetwork CIDR of the current instance.
 	RetrieveSubnetworkAliasCIDR(ctx context.Context, project, zone, instanceName string) (string, error)
 	// RetrieveLoadBalancerEndpoint retrieves the load balancer endpoint of the current instance.
-	RetrieveLoadBalancerEndpoint(ctx context.Context, project, zone string) (string, error)
+	RetrieveLoadBalancerEndpoint(ctx context.Context, project string) (string, error)
 	// SetInstanceMetadata sets metadata key: value of the instance specified by project, zone and instanceName.
 	SetInstanceMetadata(ctx context.Context, project, zone, instanceName, key, value string) error
 	// UnsetInstanceMetadata removes a metadata key-value pair of the instance specified by project, zone and instanceName.
@@ -123,11 +123,7 @@ func (m *Metadata) GetLoadBalancerEndpoint(ctx context.Context) (string, error)
 	if err != nil {
 		return "", err
 	}
-	zone, err := m.api.RetrieveZone()
+	return m.api.RetrieveLoadBalancerEndpoint(ctx, project)
-	if err != nil {
-		return "", err
-	}
-	return m.api.RetrieveLoadBalancerEndpoint(ctx, project, zone)
 }
 
 // UID retrieves the UID of the constellation.

internal/cloud/gcp/metadata_test.go

@@ -293,7 +293,7 @@ func (s *stubGCPClient) RetrieveInstanceName() (string, error) {
 	return s.instanceName, s.retrieveInstanceNameErr
 }
 
-func (s *stubGCPClient) RetrieveLoadBalancerEndpoint(ctx context.Context, project, zone string) (string, error) {
+func (s *stubGCPClient) RetrieveLoadBalancerEndpoint(ctx context.Context, project string) (string, error) {
 	return s.loadBalancerIP, s.retrieveLoadBalancerErr
 }
 

internal/cloud/gcp/wrappers.go

@@ -50,17 +50,17 @@ func (c *subnetworkClient) Get(ctx context.Context, req *computepb.GetSubnetwork
 }
 
 type forwardingRulesClient struct {
-	*compute.ForwardingRulesClient
+	*compute.GlobalForwardingRulesClient
 }
 
 func (c *forwardingRulesClient) Close() error {
-	return c.ForwardingRulesClient.Close()
+	return c.GlobalForwardingRulesClient.Close()
 }
 
-func (c *forwardingRulesClient) List(ctx context.Context, req *computepb.ListForwardingRulesRequest,
+func (c *forwardingRulesClient) List(ctx context.Context, req *computepb.ListGlobalForwardingRulesRequest,
 	opts ...gax.CallOption,
 ) ForwardingRuleIterator {
-	return c.ForwardingRulesClient.List(ctx, req)
+	return c.GlobalForwardingRulesClient.List(ctx, req)
 }
 
 type metadataClient struct{}

internal/constants/constants.go

@@ -47,6 +47,7 @@ const (
 	SSHPort          = 22
 	NVMEOverTCPPort  = 8009
 	DebugdPort       = 4000
+	KonnectivityPort = 8132
 	// Default NodePort Range
 	// https://kubernetes.io/docs/concepts/services-networking/service/#type-nodeport
 	NodePortFrom = 30000

internal/constants/firewall.go

@@ -42,6 +42,13 @@ var (
 			IPRange:     "0.0.0.0/0",
 			FromPort:    KubernetesPort,
 		},
+		{
+			Name:        "konnectivity",
+			Description: "konnectivity",
+			Protocol:    "tcp",
+			IPRange:     "0.0.0.0/0",
+			FromPort:    KonnectivityPort,
+		},
 	}
 
 	// IngressRulesDebug is the default set of ingress rules for a Constellation cluster with debug mode.

internal/grpc/retry/retry.go

@@ -36,6 +36,11 @@ func ServiceIsUnavailable(err error) bool {
 		return false
 	}
 
+	// retry if GCP proxy LB isn't fully available yet
+	if strings.HasPrefix(statusErr.Message(), `connection error: desc = "transport: authentication handshake failed: EOF"`) {
+		return true
+	}
+
 	// ideally we would check the error type directly, but grpc only provides a string
 	return !strings.HasPrefix(statusErr.Message(), `connection error: desc = "transport: authentication handshake failed`)
 }

internal/iproute/route.go

@@ -1,50 +0,0 @@
-/*
-Copyright (c) Edgeless Systems GmbH
-
-SPDX-License-Identifier: AGPL-3.0-only
-*/
-
-package iproute
-
-import (
-	"context"
-	"errors"
-	"fmt"
-	"os/exec"
-	"strings"
-)
-
-// AddToLocalRoutingTable adds the IP to the local routing table.
-func AddToLocalRoutingTable(ctx context.Context, ip string) error {
-	return manipulateLocalRoutingTable(ctx, "add", ip)
-}
-
-// RemoveFromLocalRoutingTable removes the IPfrom the local routing table.
-func RemoveFromLocalRoutingTable(ctx context.Context, ip string) error {
-	return manipulateLocalRoutingTable(ctx, "del", ip)
-}
-
-func manipulateLocalRoutingTable(ctx context.Context, action string, ip string) error {
-	// https://github.com/GoogleCloudPlatform/guest-agent/blob/792fce795218633bcbde505fb3457a0b24f26d37/google_guest_agent/addresses.go#L179
-	if !strings.Contains(ip, "/") {
-		ip = ip + "/32"
-	}
-
-	args := []string{"route", action, "to", "local", ip, "scope", "host", "dev", "ens3", "proto", "66"}
-	_, err := exec.CommandContext(ctx, "ip", args...).Output()
-	if err == nil {
-		return nil
-	}
-	var exitErr *exec.ExitError
-	if !errors.As(err, &exitErr) {
-		return fmt.Errorf("ip route %s: %w", action, err)
-	}
-	if exitErr.ExitCode() == 2 {
-		// "RTNETLINK answers: File exists" or "RTNETLINK answers: No such process"
-		//
-		// Ignore, expected in case of adding an existing route or deleting a route
-		// that does not exist.
-		return nil
-	}
-	return fmt.Errorf("ip route %s (code %v) with: %s", action, exitErr.ExitCode(), exitErr.Stderr)
-}

internal/versions/versions.go

@@ -43,6 +43,8 @@ func IsPreviewK8sVersion(version ValidK8sVersion) bool {
 const (
 	// Constellation images.
 	// These images are built in a way that they support all versions currently listed in VersionConfigs.
+	KonnectivityAgentImage   = "us.gcr.io/k8s-artifacts-prod/kas-network-proxy/proxy-agent:v0.0.32"
+	KonnectivityServerImage  = "registry.k8s.io/kas-network-proxy/proxy-server:v0.0.32"
 	JoinImage                = "ghcr.io/edgelesssys/constellation/join-service:v0.0.2-0.20220905091720-bd6c6ce836af"
 	AccessManagerImage       = "ghcr.io/edgelesssys/constellation/access-manager:v0.0.1"
 	KmsImage                 = "ghcr.io/edgelesssys/constellation/kmsserver:v0.0.2-0.20220831181049-47d4c9e30423"