karmada-webhook: fix the no such host error

Signed-off-by: zhzhuang-zju <m17799853869@163.com>

charts/karmada/_crds/patches/webhook_in_clusterresourcebindings.yaml

@@ -9,6 +9,6 @@ spec:
     strategy: Webhook
     webhook:
       clientConfig:
-        url: https://karmada-webhook.karmada-system.svc:443/convert
+        url: "https://{{name}}.{{namespace}}.svc:443/convert"
         caBundle: "{{caBundle}}"
       conversionReviewVersions: ["v1"]

charts/karmada/_crds/patches/webhook_in_resourcebindings.yaml

@@ -9,6 +9,6 @@ spec:
     strategy: Webhook
     webhook:
       clientConfig:
-        url: https://karmada-webhook.karmada-system.svc:443/convert
+        url: "https://{{name}}.{{namespace}}.svc:443/convert"
         caBundle: "{{caBundle}}"
       conversionReviewVersions: ["v1"]

hack/deploy-karmada.sh

@@ -302,7 +302,11 @@ TEMP_PATH_CRDS=$(mktemp -d)
 trap '{ rm -rf ${TEMP_PATH_CRDS}; }' EXIT
 cp -rf "${REPO_ROOT}"/charts/karmada/_crds "${TEMP_PATH_CRDS}"
 util::fill_cabundle "${ROOT_CA_FILE}" "${TEMP_PATH_CRDS}/_crds/patches/webhook_in_resourcebindings.yaml"
+sed -i'' -e "s/{{name}}/karmada-webhook/g" "${TEMP_PATH_CRDS}/_crds/patches/webhook_in_resourcebindings.yaml"
+sed -i'' -e "s/{{namespace}}/karmada-system/g" "${TEMP_PATH_CRDS}/_crds/patches/webhook_in_resourcebindings.yaml"
 util::fill_cabundle "${ROOT_CA_FILE}" "${TEMP_PATH_CRDS}/_crds/patches/webhook_in_clusterresourcebindings.yaml"
+sed -i'' -e "s/{{name}}/karmada-webhook/g" "${TEMP_PATH_CRDS}/_crds/patches/webhook_in_clusterresourcebindings.yaml"
+sed -i'' -e "s/{{namespace}}/karmada-system/g" "${TEMP_PATH_CRDS}/_crds/patches/webhook_in_clusterresourcebindings.yaml"
 installCRDs "karmada-apiserver" "${TEMP_PATH_CRDS}"
 
 # render the caBundle in these apiservice with root ca, then karmada-apiserver can use caBundle to verify corresponding AA's server-cert

operator/pkg/tasks/init/karmadaresource.go

@@ -122,7 +122,7 @@ func runCrds(r workflow.RunData) error {
 	}
 
 	caBase64 := base64.StdEncoding.EncodeToString(cert.CertData())
-	if err := patchCrds(crdsClient, crdsPatchPath, caBase64); err != nil {
+	if err := patchCrds(data, crdsClient, crdsPatchPath, caBase64); err != nil {
 		return fmt.Errorf("failed to patch karmada crds, err: %w", err)
 	}
 
@@ -149,14 +149,28 @@ func createCrds(crdsClient *crdsclient.Clientset, crdsPath string) error {
 	return nil
 }
 
-func patchCrds(crdsClient *crdsclient.Clientset, patchPath string, caBundle string) error {
+func patchCrds(data InitData, crdsClient *crdsclient.Clientset, patchPath string, caBundle string) error {
 	for _, file := range util.ListFileWithSuffix(patchPath, ".yaml") {
-		reg, err := regexp.Compile("{{caBundle}}")
+		caBundleReg, err := regexp.Compile("{{caBundle}}")
 		if err != nil {
 			return err
 		}
 
-		crdBytes, err := util.ReplaceYamlForReg(file.AbsPath, caBundle, reg)
+		nameReg, err := regexp.Compile("{{name}}")
+		if err != nil {
+			return err
+		}
+
+		namespaceReg, err := regexp.Compile("{{namespace}}")
+		if err != nil {
+			return err
+		}
+
+		crdBytes, err := util.ReplaceYamlForRegs(file.AbsPath, map[*regexp.Regexp]string{
+			caBundleReg:  caBundle,
+			nameReg:      util.KarmadaWebhookName(data.GetName()),
+			namespaceReg: data.GetNamespace(),
+		})
 		if err != nil {
 			return err
 		}

operator/pkg/util/util.go

@@ -230,15 +230,19 @@ func ReadYamlFile(path string) ([]byte, error) {
 	return yaml.YAMLToJSON(data)
 }
 
-// ReplaceYamlForReg replace content of yaml file with a Regexp
-func ReplaceYamlForReg(path, destResource string, reg *regexp.Regexp) ([]byte, error) {
+// ReplaceYamlForRegs replace content of yaml file with Regexps
+func ReplaceYamlForRegs(path string, replacements map[*regexp.Regexp]string) ([]byte, error) {
 	data, err := os.ReadFile(path)
 	if err != nil {
 		return nil, err
 	}
 
-	repl := reg.ReplaceAllString(string(data), destResource)
-	return yaml.YAMLToJSON([]byte(repl))
+	src := string(data)
+	for reg, dest := range replacements {
+		src = reg.ReplaceAllString(src, dest)
+	}
+
+	return yaml.YAMLToJSON([]byte(src))
 }
 
 // ContainAllTasks checks if all tasks in the subset are present in the tasks slice.

operator/pkg/util/util_test.go

@@ -26,11 +26,14 @@ import (
 	"net/http"
 	"os"
 	"path/filepath"
+	"regexp"
 	"strings"
 	"testing"
 	"time"
 
+	"github.com/stretchr/testify/assert"
 	"k8s.io/utils/ptr"
+	"sigs.k8s.io/yaml"
 )
 
 // mockReader is a simple io.Reader that returns an error after being called.
@@ -383,3 +386,84 @@ func verifyValidTarGzipped(tarFile, regularFile string, targetPath *string) erro
 
 	return nil
 }
+
+func TestReplaceYamlForRegs(t *testing.T) {
+	tests := []struct {
+		name            string
+		content         string
+		replacements    map[*regexp.Regexp]string
+		expectedContent string
+	}{
+		{
+			name: "simple replacement",
+			content: `
+        url: "https://{{name}}.{{namespace}}.svc:443/convert"
+        caBundle: "{{caBundle}}"
+`,
+			replacements: map[*regexp.Regexp]string{
+				regexp.MustCompile("{{caBundle}}"):  "testCaBundle",
+				regexp.MustCompile("{{name}}"):      "testName",
+				regexp.MustCompile("{{namespace}}"): "testNamespace",
+			},
+			expectedContent: `
+        url: "https://testName.testNamespace.svc:443/convert"
+        caBundle: "testCaBundle"
+`,
+		},
+		{
+			name: "partial replacement",
+			content: `
+        url: "https://{{name}}.{{namespace}}.svc:443/convert"
+        caBundle: "{{caBundle}}"
+`,
+			replacements: map[*regexp.Regexp]string{
+				regexp.MustCompile("{{caBundle}}"):  "testCaBundle",
+				regexp.MustCompile("{{namespace}}"): "testNamespace",
+			},
+			expectedContent: `
+        url: "https://{{name}}.testNamespace.svc:443/convert"
+        caBundle: "testCaBundle"
+`,
+		},
+		{
+			name: "redundant replacement",
+			content: `
+        url: "https://{{name}}.{{namespace}}.svc:443/convert"
+        caBundle: "{{caBundle}}"
+`,
+			replacements: map[*regexp.Regexp]string{
+				regexp.MustCompile("{{caBundle}}"):  "testCaBundle",
+				regexp.MustCompile("{{name}}"):      "testName",
+				regexp.MustCompile("{{namespace}}"): "testNamespace",
+				regexp.MustCompile("{{foo}}"):       "foo",
+			},
+			expectedContent: `
+        url: "https://testName.testNamespace.svc:443/convert"
+        caBundle: "testCaBundle"
+`,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			tmpFile, err := os.CreateTemp("", "example")
+			if err != nil {
+				t.Fatalf("failed to create temp file: %v", err)
+			}
+			defer os.Remove(tmpFile.Name())
+
+			if _, err := tmpFile.Write([]byte(tt.content)); err != nil {
+				t.Fatalf("failed to write temp file: %v", err)
+			}
+			if err := tmpFile.Close(); err != nil {
+				t.Fatalf("failed to close temp file: %v", err)
+			}
+
+			result, err := ReplaceYamlForRegs(tmpFile.Name(), tt.replacements)
+			expectedJSON, expectedErr := yaml.YAMLToJSON([]byte(tt.expectedContent))
+
+			assert.Equal(t, result, expectedJSON)
+			assert.Equal(t, err, expectedErr)
+		})
+	}
+}

pkg/karmadactl/cmdinit/karmada/deploy.go

@@ -98,7 +98,7 @@ func InitKarmadaResources(dir, caBase64, systemNamespace string) error {
 		if path.Ext(v) != ".yaml" {
 			continue
 		}
-		if err := patchCRDs(crdClient, caBase64, v); err != nil {
+		if err := patchCRDs(crdClient, caBase64, systemNamespace, v); err != nil {
 			return err
 		}
 	}
@@ -173,7 +173,7 @@ func createExtraResources(clientSet *kubernetes.Clientset, dir string) error {
 	return nil
 }
 
-func crdPatchesResources(filename, caBundle string) ([]byte, error) {
+func crdPatchesResources(filename, caBundle, systemNamespace string) ([]byte, error) {
 	data, err := os.ReadFile(filename)
 	if err != nil {
 		return nil, err
@@ -185,6 +185,18 @@ func crdPatchesResources(filename, caBundle string) ([]byte, error) {
 	}
 	repl := re.ReplaceAllString(string(data), caBundle)
 
+	re, err = regexp.Compile("{{name}}")
+	if err != nil {
+		return nil, err
+	}
+	repl = re.ReplaceAllString(repl, names.KarmadaWebhookComponentName)
+
+	re, err = regexp.Compile("{{namespace}}")
+	if err != nil {
+		return nil, err
+	}
+	repl = re.ReplaceAllString(repl, systemNamespace)
+
 	return []byte(repl), nil
 }
 
@@ -220,8 +232,8 @@ func createCRDs(crdClient clientset.Interface, filename string) error {
 }
 
 // patchCRDs patch crd resource
-func patchCRDs(crdClient clientset.Interface, caBundle, filename string) error {
-	data, err := crdPatchesResources(filename, caBundle)
+func patchCRDs(crdClient clientset.Interface, caBundle, systemNamespace, filename string) error {
+	data, err := crdPatchesResources(filename, caBundle, systemNamespace)
 	if err != nil {
 		return err
 	}

pkg/karmadactl/cmdinit/karmada/deploy_test.go

@@ -0,0 +1,68 @@
+/*
+Copyright 2025 The Karmada Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package karmada
+
+import (
+	"os"
+	"testing"
+
+	"github.com/karmada-io/karmada/pkg/util/names"
+)
+
+func TestCrdPatchesResources(t *testing.T) {
+	tests := []struct {
+		name            string
+		content         string
+		caBundle        string
+		systemNs        string
+		expectedContent string
+	}{
+		{
+			name:            "simple replacement",
+			content:         "caBundle: {{caBundle}}\nname: {{name}}\nnamespace: {{namespace}}",
+			caBundle:        "testCaBundle",
+			systemNs:        "testNamespace",
+			expectedContent: "caBundle: testCaBundle\nname: " + names.KarmadaWebhookComponentName + "\nnamespace: testNamespace",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			tmpFile, err := os.CreateTemp("", "example")
+			if err != nil {
+				t.Fatalf("failed to create temp file: %v", err)
+			}
+			defer os.Remove(tmpFile.Name())
+
+			if _, err := tmpFile.Write([]byte(tt.content)); err != nil {
+				t.Fatalf("failed to write temp file: %v", err)
+			}
+			if err := tmpFile.Close(); err != nil {
+				t.Fatalf("failed to close temp file: %v", err)
+			}
+
+			result, err := crdPatchesResources(tmpFile.Name(), tt.caBundle, tt.systemNs)
+			if err != nil {
+				t.Errorf("crdPatchesResources() error = %v", err)
+			}
+
+			if string(result) != tt.expectedContent {
+				t.Errorf("crdPatchesResources() = %v, want %v", string(result), tt.expectedContent)
+			}
+		})
+	}
+}