diff --git a/test/client_to_broker_v2/test_client_to_broker.go b/test/client_to_broker_v2/test_client_to_broker.go
index f866bc6..9e47eda 100644
--- a/test/client_to_broker_v2/test_client_to_broker.go
+++ b/test/client_to_broker_v2/test_client_to_broker.go
@@ -2,12 +2,14 @@ package main
 
 import (
 	"encoding/json"
+	"fmt"
 	"github.com/nwpc-oper/nwpc-message-client/commands/nwpc_message_client/app"
 	"github.com/nwpc-oper/nwpc-message-client/common"
 	"github.com/nwpc-oper/nwpc-message-client/common/sender"
 	log "github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
 	"os"
+	"path/filepath"
 	"time"
 )
 
@@ -18,14 +20,37 @@ func main() {
 var (
 	brokerAddress  = ""
 	rabbitmqServer = ""
+	logDirectory   = ""
 	workerCount    = 40
 )
 
 func init() {
-	rootCmd.Flags().StringVar(&brokerAddress, "broker-address", ":33383", "broker rpc address")
-	rootCmd.Flags().StringVar(&rabbitmqServer, "rabbitmq-server", "", "rabbitmq server address")
-	rootCmd.Flags().IntVar(&workerCount, "worker-count", 40, "count of worker to send message")
+	rootCmd.Flags().StringVar(
+		&brokerAddress,
+		"broker-address",
+		":33383",
+		"broker rpc address, run by `nwpc_message_client broker` command.",
+	)
+	rootCmd.Flags().StringVar(
+		&rabbitmqServer,
+		"rabbitmq-server",
+		"",
+		"rabbitmq server address",
+	)
+	rootCmd.Flags().IntVar(
+		&workerCount,
+		"worker-count",
+		40,
+		"count of workers to send message",
+	)
+	rootCmd.Flags().StringVar(
+		&logDirectory,
+		"log-dir",
+		"",
+		"log director",
+	)
 
+	rootCmd.MarkFlagRequired("log-dir")
 	rootCmd.MarkFlagRequired("broker-address")
 	rootCmd.MarkFlagRequired("rabbitmq-server")
 
@@ -35,16 +60,38 @@ func init() {
 	})
 }
 
+const LongDescription = `
+Test client send message to rabbitmq via broker.
+
+Client will try to send message again if first try fails.
+
+Each worker send one message every second.
+`
+
 var rootCmd = &cobra.Command{
-	Use:   "test_broker",
-	Short: "Test broker.",
-	Long:  "Test broker.",
+	Use:   "client_to_broker_v2",
+	Short: "Test client to broker.",
+	Long:  LongDescription,
 	Run: func(cmd *cobra.Command, args []string) {
+		_ = os.MkdirAll(logDirectory, 0755)
+
 		for i := 0; i < workerCount; i++ {
 			go func(index int) {
+				var workerLog = log.New()
+
+				logName := fmt.Sprintf("worker.%d.log", index)
+				logPath := filepath.Join(logDirectory, logName)
+				file, err := os.OpenFile(logPath, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
+				defer file.Close()
+				if err == nil {
+					workerLog.SetOutput(file)
+				} else {
+					workerLog.Fatal("Failed to log to file, using default stderr: %v", err)
+				}
+
 				c := time.Tick(1 * time.Second)
 				for _ = range c {
-					SendMessage(index)
+					SendMessage(index, workerLog)
 				}
 			}(i)
 		}
@@ -58,8 +105,7 @@ func Execute() {
 	}
 }
 
-func SendMessage(index int) {
-
+func SendMessage(index int, workerLog *log.Logger) {
 	brokerSender := sender.BrokerSender{
 		BrokerAddress: brokerAddress,
 		BrokerTryNo:   2,
@@ -82,10 +128,10 @@ func SendMessage(index int) {
 	messageBytes, _ := json.Marshal(message)
 	err := brokerSender.SendMessage(messageBytes)
 	if err != nil {
-		log.WithFields(log.Fields{
+		workerLog.WithFields(log.Fields{
 			"index": index,
 			"event": "error",
-		}).Errorf("send message has error: %v", err)
+		}).Errorf("send message failed: %v", err)
 	}
 
 	return