Add kind dns override

point resolver to 8.8.8.8

Author: thunderboltsid

hack/kind/dns-override.yaml

@@ -0,0 +1,25 @@
+apiVersion: v1
+data:
+  Corefile: |
+    .:53 {
+        errors
+        health {
+           lameduck 5s
+        }
+        ready
+        kubernetes cluster.local in-addr.arpa ip6.arpa {
+           pods insecure
+           fallthrough in-addr.arpa ip6.arpa
+           ttl 30
+        }
+        prometheus :9153
+        forward . 8.8.8.8
+        cache 30
+        loop
+        reload
+        loadbalance
+    }
+kind: ConfigMap
+metadata:
+  name: coredns
+  namespace: kube-system

test/e2e/e2e_suite_test.go

@@ -11,11 +11,17 @@ import (
 	"encoding/base64"
 	"encoding/gob"
 	"flag"
+	"fmt"
+	corev1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/types"
+	"k8s.io/apimachinery/pkg/util/yaml"
 	"os"
 	"path/filepath"
 	"slices"
 	"strings"
 	"testing"
+	"time"
 
 	. "github.com/onsi/ginkgo/v2"
 	. "github.com/onsi/gomega"
@@ -111,6 +117,28 @@ var _ = SynchronizedBeforeSuite(func() []byte {
 		useExistingCluster,
 	)
 
+	By("Overriding coreDNS resolver")
+	// override coredns resolver to 8.8.8.8 and restart coredns deployment
+	// read the dns-override.yaml file
+	filePath, _ := filepath.Abs("../../hack/kind/dns-override.yaml")
+	yamlFile, err := os.ReadFile(filePath)
+	Expect(err).To(BeNil(), "Failed to read the dns-override.yaml file")
+
+	// decode the yaml file into a Kubernetes object
+	decode := yaml.NewYAMLOrJSONDecoder(bytes.NewReader(yamlFile), 4096)
+	configMap := &corev1.ConfigMap{}
+	err = decode.Decode(&configMap)
+	Expect(err).To(BeNil(), "Failed to decode the yaml file into a Kubernetes object")
+
+	_, err = bootstrapClusterProxy.GetClientSet().CoreV1().ConfigMaps(configMap.GetNamespace()).Update(context.Background(), configMap, metav1.UpdateOptions{})
+	Expect(err).To(BeNil(), "Failed to update the coredns deployment with the dns-override.yaml file")
+
+	timeNow := time.Now().Format(time.RFC3339)
+	patch := fmt.Sprintf(`{"spec":{"template":{"metadata":{"annotations":{"kubectl.kubernetes.io/restartedAt":"%s"}}}}}`, timeNow)
+
+	_, err = bootstrapClusterProxy.GetClientSet().AppsV1().Deployments("kube-system").Patch(context.Background(), "coredns", types.StrategicMergePatchType, []byte(patch), metav1.PatchOptions{})
+	Expect(err).To(BeNil(), "Failed to restart the coredns deployment")
+
 	By("Initializing the bootstrap cluster")
 	initBootstrapCluster(bootstrapClusterProxy, e2eConfig, clusterctlConfigPath, artifactFolder)
 
@@ -240,6 +268,7 @@ func setupBootstrapCluster(
 		Expect(
 			kubeconfigPath,
 		).To(BeAnExistingFile(), "Failed to get the kubeconfig file for the bootstrap cluster")
+
 	} else {
 		// Loading image for already created cluster
 		imagesInput := capibootstrap.LoadImagesToKindClusterInput{