diff --git a/app.go b/app.go
index d2cbbea..696cc63 100644
--- a/app.go
+++ b/app.go
@@ -1,9 +1,10 @@
 package f5
 
 import (
-	"flag"
+	"fmt"
 	"os"
 	"q5"
+	"strings"
 	"sync"
 	"sync/atomic"
 	"time"
@@ -75,10 +76,7 @@ func (this *app) init(userApp UserApp) {
 	_httpCliMgr = new(HttpCliMgr)
 	_httpCliMgr.init()
 	{
-		var tmpNodeId, tmpInstanceId int
-		flag.IntVar(&tmpNodeId, "n", 0, "node id")
-		flag.IntVar(&tmpInstanceId, "i", 0, "instance id")
-		flag.Parse()
+		tmpNodeId, tmpInstanceId := parseArgs()
 		this.nodeId = int32(tmpNodeId)
 		this.instanceId = int32(tmpInstanceId)
 	}
@@ -256,3 +254,31 @@ func (this *app) installTimer() {
 			}
 		})
 }
+
+func parseArgs() (int, int) {
+	args := os.Args[1:]
+	if len(args) <= 0 {
+		return 0, 0
+	}
+	var nodeId, instanceId int
+	for i := 0; i < len(args); i++ {
+		arg := args[i]
+		if strings.HasPrefix(arg, "-n") {
+			if len(arg) > 2 {
+				fmt.Sscanf(arg[2:], "%d", &nodeId)
+			} else if i+1 < len(args) {
+				fmt.Sscanf(args[i+1], "%d", &nodeId)
+				i++
+			}
+		} else if strings.HasPrefix(arg, "-i") {
+			if len(arg) > 2 {
+				fmt.Sscanf(arg[2:], "%d", &instanceId)
+			} else if i+1 < len(args) {
+				fmt.Sscanf(args[i+1], "%d", &instanceId)
+				i++
+			}
+		}
+	}
+
+	return nodeId, instanceId
+}