diff --git a/src/balance/src/bnMain.c b/src/balance/src/bnMain.c
index f022fff6d8..9997d44ca5 100644
--- a/src/balance/src/bnMain.c
+++ b/src/balance/src/bnMain.c
@@ -637,6 +637,19 @@ int32_t bnDropDnode(SDnodeObj *pDnode) {
   return TSDB_CODE_SUCCESS;
 }
 
+int32_t bnDnodeCanCreateMnode(struct SDnodeObj *pDnode) {
+  if (pDnode == NULL)
+    return 0;
+
+  if (pDnode->isMgmt || pDnode->alternativeRole == TAOS_DN_ALTERNATIVE_ROLE_VNODE
+      || pDnode->status == TAOS_DN_STATUS_DROPPING
+      || pDnode->status == TAOS_DN_STATUS_OFFLINE) {
+    return 0;
+  } else {
+    return 1;
+  }
+}
+
 static void bnMonitorDnodeModule() {
   int32_t numOfMnodes = mnodeGetMnodesNum();
   if (numOfMnodes >= tsNumOfMnodes) return;
@@ -645,13 +658,7 @@ static void bnMonitorDnodeModule() {
     SDnodeObj *pDnode = tsBnDnodes.list[i];
     if (pDnode == NULL) break;
 
-    if (pDnode->isMgmt || pDnode->status == TAOS_DN_STATUS_DROPPING || pDnode->status == TAOS_DN_STATUS_OFFLINE) {
-      continue;
-    }
-
-    if (pDnode->alternativeRole == TAOS_DN_ALTERNATIVE_ROLE_VNODE) {
-      continue;
-    }
+    if (!bnDnodeCanCreateMnode(pDnode)) continue;
 
     mLInfo("dnode:%d, numOfMnodes:%d expect:%d, create mnode in this dnode", pDnode->dnodeId, numOfMnodes, tsNumOfMnodes);
     mnodeCreateMnode(pDnode->dnodeId, pDnode->dnodeEp, true);
diff --git a/src/inc/tbn.h b/src/inc/tbn.h
index b9f4e3c608..b35f90eb15 100644
--- a/src/inc/tbn.h
+++ b/src/inc/tbn.h
@@ -31,6 +31,7 @@ void    bnReset();
 int32_t bnAllocVnodes(struct SVgObj *pVgroup);
 int32_t bnAlterDnode(struct SDnodeObj *pDnode, int32_t vnodeId, int32_t dnodeId);
 int32_t bnDropDnode(struct SDnodeObj *pDnode);
+int32_t bnDnodeCanCreateMnode(struct SDnodeObj *pDnode);
 
 #ifdef __cplusplus
 }
diff --git a/src/mnode/src/mnodeDnode.c b/src/mnode/src/mnodeDnode.c
index e3feea7d3a..5a0743dd1b 100644
--- a/src/mnode/src/mnodeDnode.c
+++ b/src/mnode/src/mnodeDnode.c
@@ -16,7 +16,6 @@
 #define _DEFAULT_SOURCE
 #include "os.h"
 #include "tgrant.h"
-#include "tbn.h"
 #include "tglobal.h"
 #include "tconfig.h"
 #include "tutil.h"
@@ -632,7 +631,8 @@ static int32_t mnodeProcessDnodeStatusMsg(SMnodeMsg *pMsg) {
   }
 
   int32_t numOfMnodes = mnodeGetMnodesNum();
-  if (numOfMnodes < tsNumOfMnodes && numOfMnodes < mnodeGetOnlineDnodesNum() && !pDnode->isMgmt) {
+  if (numOfMnodes < tsNumOfMnodes && numOfMnodes < mnodeGetOnlineDnodesNum()
+      && bnDnodeCanCreateMnode(pDnode)) {
     bnNotify();
   }
 
diff --git a/tests/pytest/dockerCluster/OneMnodeMultipleVnodesTest.py b/tests/pytest/dockerCluster/OneMnodeMultipleVnodesTest.py
index ee663f89b0..43e281f437 100644
--- a/tests/pytest/dockerCluster/OneMnodeMultipleVnodesTest.py
+++ b/tests/pytest/dockerCluster/OneMnodeMultipleVnodesTest.py
@@ -12,9 +12,6 @@
 # -*- coding: utf-8 -*-
 
 from basic import *
-from util.sql import tdSql
-
-
 
 class TDTestCase:
 
@@ -36,4 +33,6 @@ td = TDTestCase()
 td.init()
 
 
+## usage:  python3 OneMnodeMultipleVnodesTest.py 
+
 
diff --git a/tests/pytest/dockerCluster/basic.py b/tests/pytest/dockerCluster/basic.py
index 50914b0be9..871d69790d 100644
--- a/tests/pytest/dockerCluster/basic.py
+++ b/tests/pytest/dockerCluster/basic.py
@@ -44,7 +44,16 @@ class BuildDockerCluser:
             "jnidebugFlag":"135",
             "qdebugFlag":"135",
             "maxSQLLength":"1048576"
-        }     
+        }
+        cmd = "mkdir -p %s" % self.dockerDir
+        self.execCmd(cmd)
+
+        cmd = "cp *.yml %s" % self.dockerDir
+        self.execCmd(cmd)
+
+        cmd = "cp Dockerfile %s" % self.dockerDir
+        self.execCmd(cmd)
+
 
     # execute command, and return the output 
     # ref: https://blog.csdn.net/wowocpp/article/details/80775650  
@@ -81,7 +90,7 @@ class BuildDockerCluser:
     def removeFile(self, rootDir, index, dir):
         cmd = "rm -rf %s/node%d/%s/*" % (rootDir, index, dir)        
         self.execCmd(cmd)
-
+    
     def clearEnv(self):
         cmd = "cd %s && docker-compose down --remove-orphans" % self.dockerDir
         self.execCmd(cmd)
@@ -108,10 +117,14 @@ class BuildDockerCluser:
         self.execCmd(cmd)
     
     def updateLocalhosts(self):
-        cmd = "grep '172.27.0.7 *tdnode1' /etc/hosts"
+        cmd = "grep '172.27.0.7 *tdnode1' /etc/hosts | sed 's: ::g'"
         result = self.execCmdAndGetOutput(cmd)
-        if result and not result.isspace():
+        print(result)
+        if result is None or result.isspace():
+            print("==========")
             cmd = "echo '172.27.0.7 tdnode1' >> /etc/hosts"
+            display = "echo %s" % cmd
+            self.execCmd(display)
             self.execCmd(cmd)
     
     def deploy(self):
@@ -138,13 +151,13 @@ class BuildDockerCluser:
         if self.numOfNodes < 2 or self.numOfNodes > 10:
             print("the number of nodes must be between 2 and 10")
             exit(0)
-        self.clearEnv()
-        self.createDirs()
         self.updateLocalhosts()
         self.deploy()
 
     def run(self):           
-        cmd = "./buildClusterEnv.sh -n %d -v %s -d %s" % (self.numOfNodes, self.getTaosdVersion(), self.dockerDir)        
+        cmd = "./buildClusterEnv.sh -n %d -v %s -d %s" % (self.numOfNodes, self.getTaosdVersion(), self.dockerDir)
+        display = "echo %s" % cmd
+        self.execCmd(display)
         self.execCmd(cmd)
         self.getConnection()
         self.createDondes()