no dns service installed if seed has taint disabledDNS

Makefile

@@ -14,7 +14,7 @@
 
 EXTENSION_PREFIX            := gardener-extension
 NAME                        := shoot-dns-service
-REGISTRY                    := eu.gcr.io/gardener-project
+REGISTRY                    := eu.gcr.io/gardener-project/gardener
 IMAGE_PREFIX                := $(REGISTRY)/extensions
 REPO_ROOT                   := $(shell dirname $(realpath $(lastword $(MAKEFILE_LIST))))
 HACK_DIR                    := $(REPO_ROOT)/hack

example/controller-registration.yaml

@@ -1,5 +1,5 @@
 ---
-apiVersion: core.gardener.cloud/v1alpha1
+apiVersion: core.gardener.cloud/v1beta1
 kind: ControllerRegistration
 metadata:
   name: extension-shoot-dns-service

go.mod

@@ -3,21 +3,21 @@ module github.com/gardener/gardener-extension-shoot-dns-service
 go 1.13
 
 require (
-	github.com/gardener/external-dns-management v0.7.5 // indirect
-	github.com/gardener/gardener v0.35.1-0.20200128130120-5b69a02f511a
-	github.com/gardener/gardener-extensions v1.3.1-0.20200205125211-46fd5fe5fbb0
+	github.com/gardener/external-dns-management v0.7.6 // indirect
+	github.com/gardener/gardener v1.0.1-0.20200213093126-7a6123b6ae21
+	github.com/gardener/gardener-extensions v1.3.1-0.20200219155613-f5f526846320
 	github.com/go-logr/logr v0.1.0
 	github.com/gobuffalo/packr/v2 v2.1.0
 	github.com/golang/mock v1.3.1
 	github.com/onsi/ginkgo v1.10.1
 	github.com/onsi/gomega v1.7.0
-	github.com/pkg/errors v0.8.1
+	github.com/pkg/errors v0.9.0
 	github.com/spf13/cobra v0.0.5
 	github.com/spf13/pflag v1.0.5
-	k8s.io/api v0.0.0-20191010143144-fbf594f18f80
-	k8s.io/apimachinery v0.0.0-20191016060620-86f2f1b9c076
+	k8s.io/api v0.16.4
+	k8s.io/apimachinery v0.17.0
 	k8s.io/client-go v11.0.1-0.20190409021438-1a26190bd76a+incompatible
-	k8s.io/component-base v0.0.0-20190918160511-547f6c5d7090
+	k8s.io/component-base v0.16.4
 	sigs.k8s.io/controller-runtime v0.4.0
 )
 

pkg/controller/actuator.go

@@ -20,6 +20,9 @@ import (
 	"path/filepath"
 	"time"
 
+	gardencorev1beta1 "github.com/gardener/gardener/pkg/apis/core/v1beta1"
+	gardencorev1beta1helper "github.com/gardener/gardener/pkg/apis/core/v1beta1/helper"
+
 	controllerconfig "github.com/gardener/gardener-extension-shoot-dns-service/pkg/controller/config"
 	"github.com/gardener/gardener-extension-shoot-dns-service/pkg/imagevector"
 	"github.com/gardener/gardener-extension-shoot-dns-service/pkg/service"
@@ -104,6 +107,14 @@ func (a *actuator) Reconcile(ctx context.Context, ex *extensionsv1alpha1.Extensi
 		return err
 	}
 
+	// Shoots that don't specify a DNS domain or that are scheduled to a seed that is tainted with "DNS disabled"
+	// don't get an DNS service
+	if gardencorev1beta1helper.TaintsHave(cluster.Seed.Spec.Taints, gardencorev1beta1.SeedTaintDisableDNS) ||
+		cluster.Shoot.Spec.DNS == nil {
+		a.logger.Info("DNS domain is not specified or the seed is tainted with 'disable-dns', therefore no shoot dns service is installed", "shoot", ex.Namespace)
+		return a.Delete(ctx, ex)
+	}
+
 	if err := a.createShootResources(ctx, cluster, ex.Namespace); err != nil {
 		return err
 	}