diff --git a/config/kube/README.md b/config/kube/README.md
new file mode 100644
index 000000000..0345db1c7
--- /dev/null
+++ b/config/kube/README.md
@@ -0,0 +1,35 @@
+# kube
+Kubernetes is a service discovery.
+
+### kube集群内部署
+集群内部署需要权限
+kubectl执行
+> serviceaccount 请调整为实际环境account。在未指定spec.serviceAccount情况下默认为namespace::default
+```
+kubectl create clusterrolebinding go-kratos:kube --clusterrole=view --serviceaccount=mesh:default
+```
+或者 kubect apply -f bind-role.yaml
+```yaml
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: go-kratos:kube
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: view
+subjects:
+- kind: ServiceAccount
+  name: default
+  namespace: mesh
+```
+
+### 集群外运行
+> 指定 .kube 文件访问
+```go
+    config.NewSource(SourceOption{
+		Namespace:     "mesh",
+		LabelSelector: "",
+		KubeConfig:    filepath.Join(homedir.HomeDir(), ".kube", "config"),
+	})
+```
\ No newline at end of file
diff --git a/config/kube/config.go b/config/kube/config.go
new file mode 100644
index 000000000..379fc17dd
--- /dev/null
+++ b/config/kube/config.go
@@ -0,0 +1,139 @@
+package main
+
+import (
+	"context"
+	"errors"
+	"fmt"
+
+	"github.com/go-kratos/kratos/v2/config"
+	v1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/client-go/kubernetes"
+	"k8s.io/client-go/rest"
+	"k8s.io/client-go/tools/clientcmd"
+)
+
+// Option is kube option.
+type Option func(*options)
+
+type options struct {
+	// kube namespace
+	Namespace string
+	// kube labelSelector example `app=test`
+	LabelSelector string
+	// kube fieldSelector example `app=test`
+	FieldSelector string
+	// set KubeConfig out-of-cluster Use outside cluster
+	KubeConfig string
+	// set master url
+	Master string
+}
+
+// Namespace with kube namespace.
+func Namespace(ns string) Option {
+	return func(o *options) {
+		o.Namespace = ns
+	}
+}
+
+// LabelSelector with kube label selector.
+func LabelSelector(label string) Option {
+	return func(o *options) {
+		o.LabelSelector = label
+	}
+}
+
+// FieldSelector with kube field selector.
+func FieldSelector(field string) Option {
+	return func(o *options) {
+		o.FieldSelector = field
+	}
+}
+
+// KubeConfig with kube config.
+func KubeConfig(config string) Option {
+	return func(o *options) {
+		o.KubeConfig = config
+	}
+}
+
+// Master with kube master.
+func Master(master string) Option {
+	return func(o *options) {
+		o.Master = master
+	}
+}
+
+type kube struct {
+	opts   options
+	client *kubernetes.Clientset
+}
+
+// NewSource new a kube config source.
+func NewSource(opts ...Option) config.Source {
+	options := options{}
+	for _, o := range opts {
+		o(&options)
+	}
+	return &kube{
+		opts: options,
+	}
+}
+
+func (k *kube) init() (err error) {
+	var config *rest.Config
+	if k.opts.KubeConfig != "" {
+		if config, err = clientcmd.BuildConfigFromFlags(k.opts.Master, k.opts.KubeConfig); err != nil {
+			return err
+		}
+	} else {
+		if config, err = rest.InClusterConfig(); err != nil {
+			return err
+		}
+	}
+	if k.client, err = kubernetes.NewForConfig(config); err != nil {
+		return err
+	}
+	return nil
+}
+
+func (k *kube) load() (kvs []*config.KeyValue, err error) {
+	cmList, err := k.client.
+		CoreV1().
+		ConfigMaps(k.opts.Namespace).
+		List(context.Background(), metav1.ListOptions{
+			LabelSelector: k.opts.LabelSelector,
+			FieldSelector: k.opts.FieldSelector,
+		})
+	if err != nil {
+		return nil, err
+	}
+	for _, cm := range cmList.Items {
+		kvs = append(kvs, k.configMap(cm)...)
+	}
+	return kvs, nil
+}
+
+func (k *kube) configMap(cm v1.ConfigMap) (kvs []*config.KeyValue) {
+	for name, val := range cm.Data {
+		kvs = append(kvs, &config.KeyValue{
+			Key:   fmt.Sprintf("%s/%s/%s", k.opts.Namespace, cm.Name, name),
+			Value: []byte(val),
+		})
+	}
+	return kvs
+}
+
+func (k *kube) Load() ([]*config.KeyValue, error) {
+	if k.opts.Namespace == "" {
+		return nil, errors.New("options namespace not full")
+	}
+	if err := k.init(); err != nil {
+		return nil, err
+	}
+	return k.load()
+}
+
+func (k *kube) Watch() (config.Watcher, error) {
+	return newWatcher(k)
+}
diff --git a/config/kube/config_test.go b/config/kube/config_test.go
new file mode 100644
index 000000000..6bd3a5885
--- /dev/null
+++ b/config/kube/config_test.go
@@ -0,0 +1,24 @@
+package main
+
+import (
+	"path/filepath"
+	"testing"
+
+	"k8s.io/client-go/util/homedir"
+)
+
+func TestSource(t *testing.T) {
+	home := homedir.HomeDir()
+	s := NewSource(
+		Namespace("mesh"),
+		LabelSelector(""),
+		KubeConfig(filepath.Join(home, ".kube", "config")),
+	)
+	kvs, err := s.Load()
+	if err != nil {
+		t.Error(err)
+	}
+	for _, v := range kvs {
+		t.Log(v)
+	}
+}
diff --git a/config/kube/example.go b/config/kube/example.go
new file mode 100644
index 000000000..9636e456c
--- /dev/null
+++ b/config/kube/example.go
@@ -0,0 +1,40 @@
+package main
+
+import (
+	"log"
+	"path/filepath"
+
+	"github.com/go-kratos/kratos/v2/config"
+	"k8s.io/client-go/util/homedir"
+)
+
+// 部署在mesh namespace 下configmap
+const yamlData = `database:
+  mysql:
+    dsn: "root:Test@tcp(mysql.database.svc.cluster.local:3306)/test?timeout=1s&readTimeout=1s&writeTimeout=1s&parseTime=true&loc=Local&charset=utf8mb4,utf8"
+    active: 20
+    idle: 10
+    idle_timeout: 3600
+  redis:
+    addr: "redis-master.redis.svc.cluster.local:6379"
+    password: ""
+    db: 4`
+
+const yamlApp = `application:
+  expire: 3600`
+
+func main() {
+	conf := config.New(
+		config.WithSource(
+			NewSource(
+				Namespace("mesh"),
+				LabelSelector("app=test"),
+				KubeConfig(filepath.Join(homedir.HomeDir(), ".kube", "config")),
+			),
+		),
+	)
+	err := conf.Load()
+	if err != nil {
+		log.Panic(err)
+	}
+}
diff --git a/config/kube/go.mod b/config/kube/go.mod
new file mode 100644
index 000000000..bdf0f531f
--- /dev/null
+++ b/config/kube/go.mod
@@ -0,0 +1,12 @@
+module github.com/go-kratos/kratos/config/kube/v2
+
+go 1.15
+
+require (
+	github.com/go-kratos/kratos/v2 v2.0.0-rc3
+	k8s.io/api v0.21.1
+	k8s.io/apimachinery v0.21.1
+	k8s.io/client-go v0.21.1
+)
+
+replace github.com/go-kratos/kratos/v2 => ../../../kratos
diff --git a/config/kube/go.sum b/config/kube/go.sum
new file mode 100644
index 000000000..81eb4f3b0
--- /dev/null
+++ b/config/kube/go.sum
@@ -0,0 +1,489 @@
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diff --git a/config/kube/watcher.go b/config/kube/watcher.go
new file mode 100644
index 000000000..e3d237440
--- /dev/null
+++ b/config/kube/watcher.go
@@ -0,0 +1,60 @@
+package main
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/go-kratos/kratos/v2/config"
+	v1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/watch"
+)
+
+type watcher struct {
+	k       *kube
+	watcher watch.Interface
+}
+
+func newWatcher(k *kube) (config.Watcher, error) {
+	w, err := k.client.CoreV1().ConfigMaps(k.opts.Namespace).Watch(context.Background(), metav1.ListOptions{
+		LabelSelector: k.opts.LabelSelector,
+		FieldSelector: k.opts.FieldSelector,
+	})
+	if err != nil {
+		return nil, err
+	}
+	return &watcher{
+		k:       k,
+		watcher: w,
+	}, nil
+}
+
+func (w *watcher) Next() ([]*config.KeyValue, error) {
+ResultChan:
+	ch := <-w.watcher.ResultChan()
+	if ch.Object == nil {
+		// 重新获取watcher
+		k8sWatcher, err := w.k.client.CoreV1().ConfigMaps(w.k.opts.Namespace).Watch(context.Background(), metav1.ListOptions{
+			LabelSelector: w.k.opts.LabelSelector,
+			FieldSelector: w.k.opts.FieldSelector,
+		})
+		if err != nil {
+			return nil, err
+		}
+		w.watcher = k8sWatcher
+		goto ResultChan
+	}
+	cm, ok := ch.Object.(*v1.ConfigMap)
+	if !ok {
+		return nil, fmt.Errorf("kube Object not ConfigMap")
+	}
+	if ch.Type == "DELETED" {
+		return nil, fmt.Errorf("kube configmap delete %s", cm.Name)
+	}
+	return w.k.configMap(*cm), nil
+}
+
+func (w *watcher) Stop() error {
+	w.watcher.Stop()
+	return nil
+}
diff --git a/config/kube/watcher_test.go b/config/kube/watcher_test.go
new file mode 100644
index 000000000..0e6ec39d7
--- /dev/null
+++ b/config/kube/watcher_test.go
@@ -0,0 +1,44 @@
+package main
+
+import (
+	"context"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/client-go/kubernetes"
+	"k8s.io/client-go/tools/clientcmd"
+	"k8s.io/client-go/util/homedir"
+	"path/filepath"
+	"testing"
+	"time"
+)
+
+func TestKube(t *testing.T) {
+	home := homedir.HomeDir()
+	config, err := clientcmd.BuildConfigFromFlags("", filepath.Join(home, ".kube", "config"))
+	if err != nil {
+		t.Error(err)
+	}
+	client, err := kubernetes.NewForConfig(config)
+	if err != nil {
+		t.Error(err)
+	}
+	cmWatcher, err := client.CoreV1().ConfigMaps("mesh").Watch(context.Background(), metav1.ListOptions{
+		LabelSelector: "app=test",
+		//FieldSelector:        "",
+	})
+	if err != nil {
+		t.Error(err)
+	}
+	go func() {
+		time.Sleep(5 * time.Second)
+		cmWatcher.Stop()
+	}()
+	for {
+		select {
+		case c := <-cmWatcher.ResultChan():
+			if c.Object == nil {
+				return
+			}
+			t.Log(c.Type, c.Object)
+		}
+	}
+}
diff --git a/registry/kute/go.mod b/registry/kute/go.mod
new file mode 100644
index 000000000..878ba05f4
--- /dev/null
+++ b/registry/kute/go.mod
@@ -0,0 +1,13 @@
+module github.com/go-kratos/kratos/registry/kube/v2
+
+go 1.17
+
+require (
+	github.com/go-kratos/kratos/v2 v2.0.5
+	github.com/json-iterator/go v1.1.11
+	k8s.io/api v0.22.1
+	k8s.io/apimachinery v0.22.1
+	k8s.io/client-go v0.22.1
+)
+
+replace github.com/go-kratos/kratos/v2 => ../../../kratos
\ No newline at end of file
diff --git a/registry/kute/go.sum b/registry/kute/go.sum
new file mode 100644
index 000000000..485c5ba86
--- /dev/null
+++ b/registry/kute/go.sum
@@ -0,0 +1,491 @@
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diff --git a/registry/kute/registry.go b/registry/kute/registry.go
new file mode 100644
index 000000000..12582102d
--- /dev/null
+++ b/registry/kute/registry.go
@@ -0,0 +1,422 @@
+// The package registry simply implements the Kubernetes-based Registry
+package kute
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"io/ioutil"
+	"net/url"
+	"os"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/go-kratos/kratos/v2/registry"
+	jsoniter "github.com/json-iterator/go"
+	corev1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/labels"
+	"k8s.io/apimachinery/pkg/types"
+	"k8s.io/client-go/informers"
+	"k8s.io/client-go/kubernetes"
+	listerv1 "k8s.io/client-go/listers/core/v1"
+	"k8s.io/client-go/tools/cache"
+)
+
+// Defines the key name of specific fields
+// Kratos needs to cooperate with the following fields to run properly on Kubernetes:
+// kratos-service-id: define the ID of the service
+// kratos-service-app: define the name of the service
+// kratos-service-version: define the version of the service
+// kratos-service-metadata: define the metadata of the service
+// kratos-service-protocols: define the protocols of the service
+//
+// Example Deployment:
+//
+// apiVersion: apps/v1
+// kind: Deployment
+// metadata:
+//  name: nginx
+//  labels:
+//    app: nginx
+// spec:
+//  replicas: 5
+//  selector:
+//    matchLabels:
+//      app: nginx
+//  template:
+//    metadata:
+//      labels:
+//        app: nginx
+//        kratos-service-id: "56991810-c77f-4a95-8190-393efa9c1a61"
+//        kratos-service-app: "nginx"
+//        kratos-service-version: "v3.5.0"
+//      annotations:
+//        kratos-service-protocols: |
+//          {"80": "http"}
+//        kratos-service-metadata: |
+//          {"region": "sh", "zone": "sh001", "cluster": "pd"}
+//    spec:
+//      containers:
+//        - name: nginx
+//          image: nginx:1.7.9
+//          ports:
+//            - containerPort: 80
+//
+//
+const (
+	// LabelsKeyServiceID is used to define the ID of the service
+	LabelsKeyServiceID = "kratos-service-id"
+	// LabelsKeyServiceName is used to define the name of the service
+	LabelsKeyServiceName = "kratos-service-app"
+	// LabelsKeyServiceVersion is used to define the version of the service
+	LabelsKeyServiceVersion = "kratos-service-version"
+	// AnnotationsKeyMetadata is used to define the metadata of the service
+	AnnotationsKeyMetadata = "kratos-service-metadata"
+	// AnnotationsKeyProtocolMap is used to define the protocols of the service
+	// Through the value of this field, Kratos can obtain the application layer protocol corresponding to the port
+	// Example value: {"80": "http", "8081": "grpc"}
+	AnnotationsKeyProtocolMap = "kratos-service-protocols"
+)
+
+// The registry simply implements service discovery based on Kubernetes
+// It has not been verified in the production environment and is currently for reference only
+type Registry struct {
+	clientSet       *kubernetes.Clientset
+	informerFactory informers.SharedInformerFactory
+	podInformer     cache.SharedIndexInformer
+	podLister       listerv1.PodLister
+
+	stopCh chan struct{}
+}
+
+// NewRegistry is used to initialize the Registry
+func NewRegistry(clientSet *kubernetes.Clientset) *Registry {
+	informerFactory := informers.NewSharedInformerFactory(clientSet, time.Minute*10)
+	podInformer := informerFactory.Core().V1().Pods().Informer()
+	podLister := informerFactory.Core().V1().Pods().Lister()
+	return &Registry{
+		clientSet:       clientSet,
+		informerFactory: informerFactory,
+		podInformer:     podInformer,
+		podLister:       podLister,
+		stopCh:          make(chan struct{}),
+	}
+}
+
+// Register is used to register services
+// Note that on Kubernetes, it can only be used to update the id/name/version/metadata/protocols of the current service,
+// but it cannot be used to update node.
+func (s *Registry) Register(service *registry.ServiceInstance) error {
+	// GetMetadata
+	metadataVal, err := marshal(service.Metadata)
+	if err != nil {
+		return err
+	}
+
+	// Generate ProtocolMap
+	protocolMap, err := getProtocolMapByEndpoints(service.Endpoints)
+	if err != nil {
+		return err
+	}
+	protocolMapVal, err := marshal(protocolMap)
+	if err != nil {
+		return err
+	}
+
+	patchBytes, err := jsoniter.Marshal(map[string]interface{}{
+		"metadata": metav1.ObjectMeta{
+			Labels: map[string]string{
+				LabelsKeyServiceID:      service.ID,
+				LabelsKeyServiceName:    service.Name,
+				LabelsKeyServiceVersion: service.Version,
+			},
+			Annotations: map[string]string{
+				AnnotationsKeyMetadata:    metadataVal,
+				AnnotationsKeyProtocolMap: protocolMapVal,
+			},
+		},
+	})
+	if err != nil {
+		return err
+	}
+
+	if _, err = s.clientSet.
+		CoreV1().
+		Pods(GetNamespace()).
+		Patch(context.TODO(), GetPodName(), types.StrategicMergePatchType, patchBytes, metav1.PatchOptions{}); err != nil {
+		return err
+	}
+	return nil
+}
+
+// Deregister the registration.
+func (s *Registry) Deregister(service *registry.ServiceInstance) error {
+	return s.Register(&registry.ServiceInstance{
+		Metadata: map[string]string{},
+	})
+}
+
+// Service return the service instances in memory according to the service name.
+func (s *Registry) Service(name string) ([]*registry.ServiceInstance, error) {
+	pods, err := s.podLister.List(labels.SelectorFromSet(map[string]string{
+		LabelsKeyServiceName: name,
+	}))
+	if err != nil {
+		return nil, err
+	}
+	var ret []*registry.ServiceInstance
+	for _, pod := range pods {
+		if pod.Status.Phase != corev1.PodRunning {
+			continue
+		}
+		instance, err := getServiceInstanceFromPod(pod)
+		if err != nil {
+			return nil, err
+		}
+		ret = append(ret, instance)
+	}
+	return ret, nil
+}
+
+func (s *Registry) sendLatestInstances(name string, announcement chan []*registry.ServiceInstance) {
+	instances, err := s.Service(name)
+	if err != nil {
+		panic(err)
+	}
+	announcement <- instances
+}
+
+// Watch creates a watcher according to the service name.
+func (s *Registry) Watch(name string) (registry.Watcher, error) {
+	stopCh := make(chan struct{}, 1)
+	announcement := make(chan []*registry.ServiceInstance, 1)
+	s.podInformer.AddEventHandler(cache.FilteringResourceEventHandler{
+		FilterFunc: func(obj interface{}) bool {
+			select {
+			case <-stopCh:
+				return false
+			case <-s.stopCh:
+				return false
+			default:
+				pod := obj.(*corev1.Pod)
+				val := pod.GetLabels()[LabelsKeyServiceName]
+				return val == name
+			}
+		},
+		Handler: cache.ResourceEventHandlerFuncs{
+			AddFunc: func(obj interface{}) {
+				s.sendLatestInstances(name, announcement)
+			},
+			UpdateFunc: func(oldObj, newObj interface{}) {
+				s.sendLatestInstances(name, announcement)
+			},
+			DeleteFunc: func(obj interface{}) {
+				s.sendLatestInstances(name, announcement)
+			},
+		},
+	})
+	return NewIterator(announcement, stopCh), nil
+}
+
+// Start is used to start the Registry
+// It is non-blocking
+func (s *Registry) Start() {
+	s.informerFactory.Start(s.stopCh)
+	if !cache.WaitForCacheSync(s.stopCh, s.podInformer.HasSynced) {
+		return
+	}
+}
+
+// Close is used to close the Registry
+// After closing, any callbacks generated by Watch will not be executed
+func (s *Registry) Close() {
+	select {
+	case <-s.stopCh:
+	default:
+		close(s.stopCh)
+	}
+}
+
+// //////////// K8S Runtime ////////////
+
+// ServiceAccountNamespacePath defines the location of the namespace file
+const ServiceAccountNamespacePath = "/var/run/secrets/kubernetes.io/serviceaccount/namespace"
+
+var currentNamespace = LoadNamespace()
+
+// LoadNamespace is used to get the current namespace from the file
+func LoadNamespace() string {
+	data, err := ioutil.ReadFile(ServiceAccountNamespacePath)
+	if err != nil {
+		return ""
+	}
+	return string(data)
+}
+
+// GetNamespace is used to get the namespace of the Pod where the current container is located
+func GetNamespace() string {
+	return currentNamespace
+}
+
+// GetNamespace is used to get the name of the Pod where the current container is located
+func GetPodName() string {
+	return os.Getenv("HOSTNAME")
+}
+
+// //////////// ProtocolMap ////////////
+
+type protocolMap map[string]string
+
+func (m protocolMap) GetProtocol(port int32) string {
+	return m[strconv.Itoa(int(port))]
+}
+
+// //////////// Iterator ////////////
+
+// Iterator performs the conversion from channel to iterator
+// It reads the latest changes from the `chan []*registry.ServiceInstance`
+// And the outside can sense the closure of Iterator through stopCh
+type Iterator struct {
+	ch     chan []*registry.ServiceInstance
+	stopCh chan struct{}
+}
+
+// NewIterator is used to initialize Iterator
+func NewIterator(channel chan []*registry.ServiceInstance, stopCh chan struct{}) *Iterator {
+	return &Iterator{
+		ch:     channel,
+		stopCh: stopCh,
+	}
+}
+
+// Next will block until ServiceInstance changes
+func (iter *Iterator) Next() ([]*registry.ServiceInstance, error) {
+	select {
+	case instances := <-iter.ch:
+		return instances, nil
+	case <-iter.stopCh:
+		return nil, ErrIteratorClosed
+	}
+}
+
+// Close is used to close the iterator
+func (iter *Iterator) Stop() error {
+	select {
+	case <-iter.stopCh:
+	default:
+		close(iter.stopCh)
+	}
+	return nil
+}
+
+// //////////// Helper Func ////////////
+
+func marshal(in interface{}) (string, error) {
+	return jsoniter.MarshalToString(in)
+}
+
+func unmarshal(data string, in interface{}) error {
+	return jsoniter.UnmarshalFromString(data, in)
+}
+
+func isEmptyObjectString(s string) bool {
+	switch s {
+	case "", "{}", "null", "nil", "[]":
+		return true
+	}
+	return false
+}
+
+func getProtocolMapByEndpoints(endpoints []string) (protocolMap, error) {
+	ret := protocolMap{}
+	for _, endpoint := range endpoints {
+		u, err := url.Parse(endpoint)
+		if err != nil {
+			return nil, err
+		}
+		ret[u.Port()] = u.Scheme
+	}
+	return ret, nil
+}
+
+func getProtocolMapFromPod(pod *corev1.Pod) (protocolMap, error) {
+	protocolMap := protocolMap{}
+	if s := pod.Annotations[AnnotationsKeyProtocolMap]; !isEmptyObjectString(s) {
+		err := unmarshal(s, &protocolMap)
+		if err != nil {
+			return nil, &ErrorHandleResource{Namespace: pod.Namespace, Name: pod.Name, Reason: err}
+		}
+	}
+	return protocolMap, nil
+}
+
+func getMetadataFromPod(pod *corev1.Pod) (map[string]string, error) {
+	metadata := map[string]string{}
+	if s := pod.Annotations[AnnotationsKeyMetadata]; !isEmptyObjectString(s) {
+		err := unmarshal(s, &metadata)
+		if err != nil {
+			return nil, &ErrorHandleResource{Namespace: pod.Namespace, Name: pod.Name, Reason: err}
+		}
+	}
+	return metadata, nil
+}
+
+func getServiceInstanceFromPod(pod *corev1.Pod) (*registry.ServiceInstance, error) {
+	podIP := pod.Status.PodIP
+	podLabels := pod.GetLabels()
+	// Get Metadata
+	metadata, err := getMetadataFromPod(pod)
+	if err != nil {
+		return nil, err
+	}
+	// Get Protocols Definition
+	protocolMap, err := getProtocolMapFromPod(pod)
+	if err != nil {
+		return nil, err
+	}
+
+	// Get Endpoints
+	var endpoints []string
+	for _, container := range pod.Spec.Containers {
+		for _, cp := range container.Ports {
+			port := cp.ContainerPort
+			protocol := protocolMap.GetProtocol(port)
+			if protocol == "" {
+				if cp.Name != "" {
+					protocol = strings.Split(cp.Name, "-")[0]
+				} else {
+					protocol = string(cp.Protocol)
+				}
+			}
+			addr := fmt.Sprintf("%s://%s:%d", protocol, podIP, port)
+			endpoints = append(endpoints, addr)
+		}
+	}
+	return &registry.ServiceInstance{
+		ID:        podLabels[LabelsKeyServiceID],
+		Name:      podLabels[LabelsKeyServiceName],
+		Version:   podLabels[LabelsKeyServiceVersion],
+		Metadata:  metadata,
+		Endpoints: endpoints,
+	}, nil
+}
+
+// //////////// Error Definition ////////////
+
+// ErrIteratorClosed defines the error that the iterator is closed
+var ErrIteratorClosed = errors.New("iterator closed")
+
+// ErrorHandleResource defines the error that cannot handle K8S resources normally
+type ErrorHandleResource struct {
+	Namespace string
+	Name      string
+	Reason    error
+}
+
+// Error implements the error interface
+func (err *ErrorHandleResource) Error() string {
+	return fmt.Sprintf("failed to handle resource(namespace=%s, name=%s): %s",
+		err.Namespace, err.Name, err.Reason)
+}