diff --git a/Makefile.utils b/Makefile.utils
index 2230c19..cd151af 100644
--- a/Makefile.utils
+++ b/Makefile.utils
@@ -34,6 +34,13 @@ install-helm-package:
 		--set "image.undermoonImageTag=$(UNDERMOON_IMG_VERSION)" \
 		example-undermoon "undermoon-cluster-$(OPERATOR_HELM_VERSION).tgz"
 
+upgrade-helm-package:
+	$(MAKE) build-helm
+	helm upgrade \
+		--set "image.undermoonImage=$(UNDERMOON_IMG_NAME)" \
+		--set "image.undermoonImageTag=$(UNDERMOON_IMG_VERSION)" \
+		example-undermoon "undermoon-cluster-$(OPERATOR_HELM_VERSION).tgz"
+
 uninstall-helm-package:
 	helm uninstall example-undermoon || true
 	helm uninstall example-operator || true
@@ -95,6 +102,9 @@ debug-build:
 debug-install:
 	$(MAKE) install-helm-package UM_OP_DEBUG=1
 
+debug-upgrade:
+	$(MAKE) upgrade-helm-package UM_OP_DEBUG=1
+
 debug-run:
 	$(MAKE) install UM_OP_DEBUG=1
 	$(MAKE) deploy UM_OP_DEBUG=1
diff --git a/api/v1alpha1/undermoon_types.go b/api/v1alpha1/undermoon_types.go
index b986afc..4cf891c 100644
--- a/api/v1alpha1/undermoon_types.go
+++ b/api/v1alpha1/undermoon_types.go
@@ -46,6 +46,11 @@ type UndermoonSpec struct {
 	ActiveRedirection bool `json:"activeRedirection"`
 	// +kubebuilder:validation:Minimum=1
 	ProxyThreads uint32 `json:"proxyThreads"`
+	// Interval to trigger SCAN command during migration. This is in microseconds.
+	MigrationScanInterval uint32 `json:"migrationScanInterval"`
+	// COUNT arguments for SCAN command during migration.
+	// +kubebuilder:validation:Minimum=1
+	MigrationScanCount uint32 `json:"migrationScanCount"`
 
 	// +kubebuilder:validation:MinLength=1
 	UndermoonImage           string            `json:"undermoonImage"`
diff --git a/config/cr/overlays/helm/replace_values.yaml b/config/cr/overlays/helm/replace_values.yaml
index baf4a8f..c39c90b 100644
--- a/config/cr/overlays/helm/replace_values.yaml
+++ b/config/cr/overlays/helm/replace_values.yaml
@@ -20,6 +20,12 @@
 - op: replace
   path: /spec/proxyThreads
   value: "{{ .Values.cluster.proxyThreads }}"
+- op: replace
+  path: /spec/migrationScanInterval
+  value: "{{ .Values.cluster.migrationScanInterval }}"
+- op: replace
+  path: /spec/migrationScanCount
+  value: "{{ .Values.cluster.migrationScanCount }}"
 - op: replace
   path: /spec/undermoonImage
   value: "{{ .Values.image.undermoonImage }}:{{ .Values.image.undermoonImageTag }}"
diff --git a/config/crd/bases/undermoon.doyoubi.mydomain_undermoons.yaml b/config/crd/bases/undermoon.doyoubi.mydomain_undermoons.yaml
index 736248b..996f25f 100644
--- a/config/crd/bases/undermoon.doyoubi.mydomain_undermoons.yaml
+++ b/config/crd/bases/undermoon.doyoubi.mydomain_undermoons.yaml
@@ -679,6 +679,16 @@ spec:
               format: int32
               minimum: 1
               type: integer
+            migrationScanCount:
+              description: COUNT arguments for SCAN command during migration.
+              format: int32
+              minimum: 1
+              type: integer
+            migrationScanInterval:
+              description: Interval to trigger SCAN command during migration. This
+                is in microseconds.
+              format: int32
+              type: integer
             port:
               description: Port for the redis service.
               format: int32
@@ -756,6 +766,8 @@ spec:
           - chunkNumber
           - clusterName
           - maxMemory
+          - migrationScanCount
+          - migrationScanInterval
           - port
           - proxyThreads
           - redisImage
diff --git a/controllers/broker_client.go b/controllers/broker_client.go
index 0fa0035..fbdfc1b 100644
--- a/controllers/broker_client.go
+++ b/controllers/broker_client.go
@@ -446,3 +446,54 @@ func (client *brokerClient) getClusterInfo(address, clusterName string) (*cluste
 	content := res.Body()
 	return nil, errors.Errorf("Failed to get cluster info: invalid status code %d: %s", res.StatusCode(), string(content))
 }
+
+type clusterConfigPayload struct {
+	MigrationScanInterval string `json:"migration_scan_interval"`
+	MigrationScanCount    string `json:"migration_scan_count"`
+}
+
+func (client *brokerClient) changeClusterConfig(address, clusterName string, scanInterval, scanCount uint32) error {
+	url := fmt.Sprintf("http://%s/api/v2/clusters/config/%s", address, clusterName)
+	payload := &clusterConfigPayload{
+		MigrationScanInterval: fmt.Sprintf("%d", scanInterval),
+		MigrationScanCount:    fmt.Sprintf("%d", scanCount),
+	}
+	res, err := client.httpClient.R().
+		SetBody(payload).
+		SetError(&errorResponse{}).
+		Patch(url)
+	if err != nil {
+		return err
+	}
+
+	if res.StatusCode() == 200 {
+		return nil
+	}
+
+	if res.StatusCode() == 504 {
+		response, ok := res.Error().(*errorResponse)
+		if ok && response.Error == errStrExternalTimeout {
+			return errExternalTimeout
+		}
+	}
+
+	if res.StatusCode() == 404 {
+		response, ok := res.Error().(*errorResponse)
+		if ok {
+			return errors.Errorf("cluster not found, error code %s", response.Error)
+		}
+	}
+
+	if res.StatusCode() == 409 {
+		response, ok := res.Error().(*errorResponse)
+		if ok && response.Error == errStrRetry {
+			return errRetryReconciliation
+		}
+		if ok && response.Error == errStrMigrationRunning {
+			return errMigrationRunning
+		}
+	}
+
+	content := res.Body()
+	return errors.Errorf("Failed to update cluster config: invalid status code %d: %s", res.StatusCode(), string(content))
+}
diff --git a/controllers/meta_controller.go b/controllers/meta_controller.go
index 619c48a..30addb3 100644
--- a/controllers/meta_controller.go
+++ b/controllers/meta_controller.go
@@ -57,6 +57,11 @@ func (con *metaController) reconcileMeta(
 		return nil, err
 	}
 
+	err = con.changeClusterConfig(reqLogger, masterBrokerAddress, cr)
+	if err != nil {
+		return nil, err
+	}
+
 	info, err := con.getClusterInfo(reqLogger, masterBrokerAddress, cr)
 	if err != nil {
 		return nil, err
@@ -199,6 +204,29 @@ func (con *metaController) createCluster(reqLogger logr.Logger, masterBrokerAddr
 	return nil
 }
 
+func (con *metaController) changeClusterConfig(reqLogger logr.Logger, masterBrokerAddress string, cr *undermoonv1alpha1.Undermoon) error {
+	err := con.client.changeClusterConfig(
+		masterBrokerAddress,
+		cr.Spec.ClusterName,
+		cr.Spec.MigrationScanInterval,
+		cr.Spec.MigrationScanCount,
+	)
+	if err != nil {
+		if err == errMigrationRunning {
+			// Undermoon will implement this restriction later.
+			return errRetryReconciliation
+		}
+		if err == errRetryReconciliation {
+			return err
+		}
+		reqLogger.Error(err, "failed to change cluster config",
+			"Name", cr.ObjectMeta.Name,
+			"ClusterName", cr.Spec.ClusterName)
+		return err
+	}
+	return nil
+}
+
 func (con *metaController) changeNodeNumber(reqLogger logr.Logger, masterBrokerAddress string, cr *undermoonv1alpha1.Undermoon) error {
 	chunkNumber := int(cr.Spec.ChunkNumber)
 	clusterName := cr.Spec.ClusterName
diff --git a/helm/undermoon-cluster/templates/undermoon.yaml b/helm/undermoon-cluster/templates/undermoon.yaml
index 8b42fa6..ac28162 100644
--- a/helm/undermoon-cluster/templates/undermoon.yaml
+++ b/helm/undermoon-cluster/templates/undermoon.yaml
@@ -11,6 +11,8 @@ spec:
   clusterName: {{ .Values.cluster.clusterName }}
   coordinatorResources: {{- toYaml .Values.resources.coordinatorResources | nindent 4 }}
   maxMemory: {{ .Values.cluster.maxMemory }}
+  migrationScanCount: {{ .Values.cluster.migrationScanCount }}
+  migrationScanInterval: {{ .Values.cluster.migrationScanInterval }}
   port: {{ .Values.cluster.port }}
   proxyResources: {{- toYaml .Values.resources.proxyResources | nindent 4 }}
   proxyThreads: {{ .Values.cluster.proxyThreads }}
diff --git a/helm/undermoon-cluster/values.yaml b/helm/undermoon-cluster/values.yaml
index 251cf36..1f47e1c 100644
--- a/helm/undermoon-cluster/values.yaml
+++ b/helm/undermoon-cluster/values.yaml
@@ -9,6 +9,8 @@ cluster:
   port: 5299
   activeRedirection: false
   proxyThreads: 2
+  migrationScanInterval: 1000
+  migrationScanCount: 16
 
 image:
   undermoonImage: doyoubi/undermoon
diff --git a/helm/undermoon-operator/templates/undermoon.doyoubi.mydomain_undermoons.yaml b/helm/undermoon-operator/templates/undermoon.doyoubi.mydomain_undermoons.yaml
index 51ff813..6bd0432 100644
--- a/helm/undermoon-operator/templates/undermoon.doyoubi.mydomain_undermoons.yaml
+++ b/helm/undermoon-operator/templates/undermoon.doyoubi.mydomain_undermoons.yaml
@@ -432,6 +432,15 @@ spec:
               format: int32
               minimum: 1
               type: integer
+            migrationScanCount:
+              description: COUNT arguments for SCAN command during migration.
+              format: int32
+              minimum: 1
+              type: integer
+            migrationScanInterval:
+              description: Interval to trigger SCAN command during migration. This is in microseconds.
+              format: int32
+              type: integer
             port:
               description: Port for the redis service.
               format: int32
@@ -500,6 +509,8 @@ spec:
           - chunkNumber
           - clusterName
           - maxMemory
+          - migrationScanCount
+          - migrationScanInterval
           - port
           - proxyThreads
           - redisImage