diff --git a/pkg/controller/component/graphd_cluster.go b/pkg/controller/component/graphd_cluster.go
index 42bc7e81..25751ae2 100644
--- a/pkg/controller/component/graphd_cluster.go
+++ b/pkg/controller/component/graphd_cluster.go
@@ -140,7 +140,7 @@ func (c *graphdCluster) syncGraphdWorkload(nc *v1alpha1.NebulaCluster) error {
 
 	if nc.GraphdComponent().IsReady() {
 		endpoints := nc.GetGraphdEndpoints(v1alpha1.GraphdPortNameHTTP)
-		if err := updateDynamicFlags(endpoints, newWorkload.GetAnnotations(), oldWorkload.GetAnnotations()); err != nil {
+		if err := updateDynamicFlags(endpoints, newWorkload.GetAnnotations()); err != nil {
 			return fmt.Errorf("update graphd cluster %s dynamic flags failed: %v", newWorkload.GetName(), err)
 		}
 	}
diff --git a/pkg/controller/component/helper.go b/pkg/controller/component/helper.go
index fd702c68..48dbad82 100644
--- a/pkg/controller/component/helper.go
+++ b/pkg/controller/component/helper.go
@@ -19,7 +19,6 @@ package component
 import (
 	"encoding/json"
 	"fmt"
-	"reflect"
 	"strings"
 	"time"
 
@@ -218,7 +217,7 @@ func staticFlags(config map[string]string) map[string]string {
 	return static
 }
 
-func updateDynamicFlags(endpoints []string, newAnnotations, oldAnnotations map[string]string) error {
+func updateDynamicFlags(endpoints []string, newAnnotations map[string]string) error {
 	newFlags := make(map[string]string)
 	newFlagsVal, ok := newAnnotations[annotation.AnnLastAppliedDynamicFlagsKey]
 	if ok {
@@ -226,23 +225,11 @@ func updateDynamicFlags(endpoints []string, newAnnotations, oldAnnotations map[s
 			return err
 		}
 	}
-	oldFlags := make(map[string]string)
-	oldFlagsVal, ok := oldAnnotations[annotation.AnnLastAppliedDynamicFlagsKey]
-	if ok {
-		if err := json.Unmarshal([]byte(oldFlagsVal), &oldFlags); err != nil {
-			return err
-		}
-	}
-	if reflect.DeepEqual(newFlags, oldFlags) {
+	if len(newFlags) == 0 {
 		return nil
 	}
-
-	updated, removed := maputil.IntersectionDifference(oldFlags, newFlags)
-	_, added := maputil.IntersectionDifference(newFlags, oldFlags)
-	maputil.ResetMap(removed, v1alpha1.DynamicFlags)
-	merged := maputil.MergeStringMaps(true, updated, added, removed)
-	klog.Infof("merged dynamic flags: %v", merged)
-	str, err := codec.Encode(merged)
+	klog.Infof("dynamic flags: %v", newFlags)
+	str, err := codec.Encode(newFlags)
 	if err != nil {
 		return err
 	}
diff --git a/pkg/controller/component/metad_cluster.go b/pkg/controller/component/metad_cluster.go
index c4041eb2..eb34e2d7 100644
--- a/pkg/controller/component/metad_cluster.go
+++ b/pkg/controller/component/metad_cluster.go
@@ -141,7 +141,7 @@ func (c *metadCluster) syncMetadWorkload(nc *v1alpha1.NebulaCluster) error {
 		}
 
 		endpoints := nc.GetMetadEndpoints(v1alpha1.MetadPortNameHTTP)
-		if err := updateDynamicFlags(endpoints, newWorkload.GetAnnotations(), oldWorkload.GetAnnotations()); err != nil {
+		if err := updateDynamicFlags(endpoints, newWorkload.GetAnnotations()); err != nil {
 			return fmt.Errorf("update metad cluster %s dynamic flags failed: %v", newWorkload.GetName(), err)
 		}
 	}
diff --git a/pkg/controller/component/storaged_cluster.go b/pkg/controller/component/storaged_cluster.go
index 6a20c3c5..b1161101 100644
--- a/pkg/controller/component/storaged_cluster.go
+++ b/pkg/controller/component/storaged_cluster.go
@@ -184,7 +184,7 @@ func (c *storagedCluster) syncStoragedWorkload(nc *v1alpha1.NebulaCluster) error
 
 	if nc.StoragedComponent().IsReady() {
 		endpoints := nc.GetStoragedEndpoints(v1alpha1.StoragedPortNameHTTP)
-		if err := updateDynamicFlags(endpoints, newWorkload.GetAnnotations(), oldWorkload.GetAnnotations()); err != nil {
+		if err := updateDynamicFlags(endpoints, newWorkload.GetAnnotations()); err != nil {
 			return fmt.Errorf("update storaged cluster %s dynamic flags failed: %v", newWorkload.GetName(), err)
 		}
 
diff --git a/pkg/util/http/http.go b/pkg/util/http/http.go
index 1b2bf65a..08993abf 100644
--- a/pkg/util/http/http.go
+++ b/pkg/util/http/http.go
@@ -4,7 +4,7 @@ import (
 	"bytes"
 	"context"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"time"
 
@@ -44,7 +44,7 @@ func request(url, method string, jsonData []byte) ([]byte, error) {
 		}
 	}()
 
-	body, err := ioutil.ReadAll(resp.Body)
+	body, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return nil, fmt.Errorf("io read error: %v", err)
 	}