diff --git a/go-api/rgpb/rg.pb.go b/go-api/rgpb/rg.pb.go
index 2f94d2e..e78ebeb 100644
--- a/go-api/rgpb/rg.pb.go
+++ b/go-api/rgpb/rg.pb.go
@@ -114,18 +114,73 @@ func (x *ResourceGroupTransfer) GetResourceGroup() string {
 	return ""
 }
 
+type NodeLabel struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Key   string `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
+	Value string `protobuf:"bytes,2,opt,name=value,proto3" json:"value,omitempty"`
+}
+
+func (x *NodeLabel) Reset() {
+	*x = NodeLabel{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_rg_proto_msgTypes[2]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *NodeLabel) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*NodeLabel) ProtoMessage() {}
+
+func (x *NodeLabel) ProtoReflect() protoreflect.Message {
+	mi := &file_rg_proto_msgTypes[2]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use NodeLabel.ProtoReflect.Descriptor instead.
+func (*NodeLabel) Descriptor() ([]byte, []int) {
+	return file_rg_proto_rawDescGZIP(), []int{2}
+}
+
+func (x *NodeLabel) GetKey() string {
+	if x != nil {
+		return x.Key
+	}
+	return ""
+}
+
+func (x *NodeLabel) GetValue() string {
+	if x != nil {
+		return x.Value
+	}
+	return ""
+}
+
 type ResourceGroupNodeFilter struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	PreferNodeLabels []string `protobuf:"bytes,1,rep,name=prefer_node_labels,json=preferNodeLabels,proto3" json:"prefer_node_labels,omitempty"` // node in resource group must match node labels requirements
+	PreferNodeLabels []*NodeLabel `protobuf:"bytes,1,rep,name=prefer_node_labels,json=preferNodeLabels,proto3" json:"prefer_node_labels,omitempty"` // node in resource group must match node labels requirements
 }
 
 func (x *ResourceGroupNodeFilter) Reset() {
 	*x = ResourceGroupNodeFilter{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_rg_proto_msgTypes[2]
+		mi := &file_rg_proto_msgTypes[3]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -138,7 +193,7 @@ func (x *ResourceGroupNodeFilter) String() string {
 func (*ResourceGroupNodeFilter) ProtoMessage() {}
 
 func (x *ResourceGroupNodeFilter) ProtoReflect() protoreflect.Message {
-	mi := &file_rg_proto_msgTypes[2]
+	mi := &file_rg_proto_msgTypes[3]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -151,10 +206,10 @@ func (x *ResourceGroupNodeFilter) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ResourceGroupNodeFilter.ProtoReflect.Descriptor instead.
 func (*ResourceGroupNodeFilter) Descriptor() ([]byte, []int) {
-	return file_rg_proto_rawDescGZIP(), []int{2}
+	return file_rg_proto_rawDescGZIP(), []int{3}
 }
 
-func (x *ResourceGroupNodeFilter) GetPreferNodeLabels() []string {
+func (x *ResourceGroupNodeFilter) GetPreferNodeLabels() []*NodeLabel {
 	if x != nil {
 		return x.PreferNodeLabels
 	}
@@ -176,7 +231,7 @@ type ResourceGroupConfig struct {
 func (x *ResourceGroupConfig) Reset() {
 	*x = ResourceGroupConfig{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_rg_proto_msgTypes[3]
+		mi := &file_rg_proto_msgTypes[4]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -189,7 +244,7 @@ func (x *ResourceGroupConfig) String() string {
 func (*ResourceGroupConfig) ProtoMessage() {}
 
 func (x *ResourceGroupConfig) ProtoReflect() protoreflect.Message {
-	mi := &file_rg_proto_msgTypes[3]
+	mi := &file_rg_proto_msgTypes[4]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -202,7 +257,7 @@ func (x *ResourceGroupConfig) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ResourceGroupConfig.ProtoReflect.Descriptor instead.
 func (*ResourceGroupConfig) Descriptor() ([]byte, []int) {
-	return file_rg_proto_rawDescGZIP(), []int{3}
+	return file_rg_proto_rawDescGZIP(), []int{4}
 }
 
 func (x *ResourceGroupConfig) GetRequests() *ResourceGroupLimit {
@@ -251,43 +306,48 @@ var file_rg_proto_rawDesc = []byte{
 	0x52, 0x65, 0x73, 0x6f, 0x75, 0x72, 0x63, 0x65, 0x47, 0x72, 0x6f, 0x75, 0x70, 0x54, 0x72, 0x61,
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+	0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -302,24 +362,26 @@ func file_rg_proto_rawDescGZIP() []byte {
 	return file_rg_proto_rawDescData
 }
 
-var file_rg_proto_msgTypes = make([]protoimpl.MessageInfo, 4)
+var file_rg_proto_msgTypes = make([]protoimpl.MessageInfo, 5)
 var file_rg_proto_goTypes = []interface{}{
 	(*ResourceGroupLimit)(nil),      // 0: milvus.proto.rg.ResourceGroupLimit
 	(*ResourceGroupTransfer)(nil),   // 1: milvus.proto.rg.ResourceGroupTransfer
-	(*ResourceGroupNodeFilter)(nil), // 2: milvus.proto.rg.ResourceGroupNodeFilter
-	(*ResourceGroupConfig)(nil),     // 3: milvus.proto.rg.ResourceGroupConfig
+	(*NodeLabel)(nil),               // 2: milvus.proto.rg.NodeLabel
+	(*ResourceGroupNodeFilter)(nil), // 3: milvus.proto.rg.ResourceGroupNodeFilter
+	(*ResourceGroupConfig)(nil),     // 4: milvus.proto.rg.ResourceGroupConfig
 }
 var file_rg_proto_depIdxs = []int32{
-	0, // 0: milvus.proto.rg.ResourceGroupConfig.requests:type_name -> milvus.proto.rg.ResourceGroupLimit
-	0, // 1: milvus.proto.rg.ResourceGroupConfig.limits:type_name -> milvus.proto.rg.ResourceGroupLimit
-	1, // 2: milvus.proto.rg.ResourceGroupConfig.transfer_from:type_name -> milvus.proto.rg.ResourceGroupTransfer
-	1, // 3: milvus.proto.rg.ResourceGroupConfig.transfer_to:type_name -> milvus.proto.rg.ResourceGroupTransfer
-	2, // 4: milvus.proto.rg.ResourceGroupConfig.node_filter:type_name -> milvus.proto.rg.ResourceGroupNodeFilter
-	5, // [5:5] is the sub-list for method output_type
-	5, // [5:5] is the sub-list for method input_type
-	5, // [5:5] is the sub-list for extension type_name
-	5, // [5:5] is the sub-list for extension extendee
-	0, // [0:5] is the sub-list for field type_name
+	2, // 0: milvus.proto.rg.ResourceGroupNodeFilter.prefer_node_labels:type_name -> milvus.proto.rg.NodeLabel
+	0, // 1: milvus.proto.rg.ResourceGroupConfig.requests:type_name -> milvus.proto.rg.ResourceGroupLimit
+	0, // 2: milvus.proto.rg.ResourceGroupConfig.limits:type_name -> milvus.proto.rg.ResourceGroupLimit
+	1, // 3: milvus.proto.rg.ResourceGroupConfig.transfer_from:type_name -> milvus.proto.rg.ResourceGroupTransfer
+	1, // 4: milvus.proto.rg.ResourceGroupConfig.transfer_to:type_name -> milvus.proto.rg.ResourceGroupTransfer
+	3, // 5: milvus.proto.rg.ResourceGroupConfig.node_filter:type_name -> milvus.proto.rg.ResourceGroupNodeFilter
+	6, // [6:6] is the sub-list for method output_type
+	6, // [6:6] is the sub-list for method input_type
+	6, // [6:6] is the sub-list for extension type_name
+	6, // [6:6] is the sub-list for extension extendee
+	0, // [0:6] is the sub-list for field type_name
 }
 
 func init() { file_rg_proto_init() }
@@ -353,7 +415,7 @@ func file_rg_proto_init() {
 			}
 		}
 		file_rg_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ResourceGroupNodeFilter); i {
+			switch v := v.(*NodeLabel); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -365,6 +427,18 @@ func file_rg_proto_init() {
 			}
 		}
 		file_rg_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ResourceGroupNodeFilter); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_rg_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*ResourceGroupConfig); i {
 			case 0:
 				return &v.state
@@ -383,7 +457,7 @@ func file_rg_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_rg_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   4,
+			NumMessages:   5,
 			NumExtensions: 0,
 			NumServices:   0,
 		},
diff --git a/proto/rg.proto b/proto/rg.proto
index aeb4fd1..57a9dfc 100644
--- a/proto/rg.proto
+++ b/proto/rg.proto
@@ -20,8 +20,13 @@ message ResourceGroupTransfer {
   // preserve for other option, such as weight, priority or affinity setup.
 }
 
+message NodeLabel {
+  string key = 1;
+  string value = 2;
+}
+
 message ResourceGroupNodeFilter {
-  repeated string prefer_node_labels = 1; // node in resource group must match node labels requirements
+  repeated NodeLabel prefer_node_labels = 1; // node in resource group must match node labels requirements
 }
   
 message ResourceGroupConfig {