diff --git a/src/dnode/CMakeLists.txt b/src/dnode/CMakeLists.txt
index 2fdd531941..32cf41b1a8 100644
--- a/src/dnode/CMakeLists.txt
+++ b/src/dnode/CMakeLists.txt
@@ -3,7 +3,7 @@ PROJECT(TDengine)
 
 IF ((TD_LINUX_64) OR (TD_LINUX_32 AND TD_ARM))
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/inc)
-  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/dnode/detail/inc)
+  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/dnode/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/mnode/detail/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/vnode/detail/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/client/inc)
@@ -20,8 +20,6 @@ IF ((TD_LINUX_64) OR (TD_LINUX_32 AND TD_ARM))
 
   IF (TD_CLUSTER)
     TARGET_LINK_LIBRARIES(taosd dcluster)
-  ELSEIF (TD_LITE)
-    TARGET_LINK_LIBRARIES(taosd dlite)
   ENDIF ()
 
   SET(PREPARE_ENV_CMD "prepare_env_cmd")
diff --git a/src/dnode/inc/dnodeMgmt.h b/src/dnode/inc/dnodeMgmt.h
index 453795e0bd..51e3e7c18e 100644
--- a/src/dnode/inc/dnodeMgmt.h
+++ b/src/dnode/inc/dnodeMgmt.h
@@ -13,13 +13,15 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef TDENGINE_VNODEMGMT_H
-#define TDENGINE_VNODEMGMT_H
+#ifndef TDENGINE_DNODE_MGMT_H
+#define TDENGINE_DNODE_MGMT_H
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+#include "tsched.h"
+
 typedef struct {
   char  id[20];
   char  sid;
@@ -31,8 +33,31 @@ typedef struct {
 int vnodeProcessCreateMeterRequest(char *pMsg, int msgLen, SMgmtObj *pMgmtObj);
 int vnodeProcessRemoveMeterRequest(char *pMsg, int msgLen, SMgmtObj *pMgmtObj);
 
+void dnodeDistributeMsgFromMgmt(char *content, int msgLen, int msgType, SMgmtObj *pObj);
+void mgmtProcessMsgFromDnodeSpec(SSchedMsg *sched);
+
+extern void *dmQhandle;
+extern char *(*taosBuildRspMsgToMnodeWithSize)(SMgmtObj *pObj, char type, int size);
+extern char *(*taosBuildReqMsgToMnodeWithSize)(SMgmtObj *pObj, char type, int size);
+extern char *(*taosBuildRspMsgToMnode)(SMgmtObj *pObj, char type);
+extern char *(*taosBuildReqMsgToMnode)(SMgmtObj *pObj, char type);
+extern int (*taosSendMsgToMnode)(SMgmtObj *pObj, char *msg, int msgLen);
+extern int (*taosSendSimpleRspToMnode)(SMgmtObj *pObj, char rsptype, char code);
+extern void (*dnodeInitMgmtIp)();
+extern int (*dnodeInitMgmtConn)();
+
+char *taosBuildRspMsgToMnodeWithSizeEdgeImp(SMgmtObj *pObj, char type, int size);
+char *taosBuildReqMsgToMnodeWithSizeEdgeImp(SMgmtObj *pObj, char type, int size);
+char *taosBuildRspMsgToMnodeEdgeImp(SMgmtObj *pObj, char type);
+char *taosBuildReqMsgToMnodeEdgeImp(SMgmtObj *pObj, char type);
+int taosSendMsgToMnodeEdgeImp(SMgmtObj *pObj, char *msg, int msgLen);
+int taosSendSimpleRspToMnodeEdgeImp(SMgmtObj *pObj, char rsptype, char code);
+void dnodeInitMgmtIpEdgeImp();
+void* dnodeProcessMsgFromMgmtEdgeImp(SSchedMsg *sched);
+int dnodeInitMgmtConnEdgeImp();
+
 #ifdef __cplusplus
 }
 #endif
 
-#endif  // TDENGINE_VNODEMGMT_H
+#endif
diff --git a/src/dnode/inc/dnodePlugin.h b/src/dnode/inc/dnodeModule.h
similarity index 51%
rename from src/dnode/inc/dnodePlugin.h
rename to src/dnode/inc/dnodeModule.h
index 697567dce7..76f3bd4ffa 100644
--- a/src/dnode/inc/dnodePlugin.h
+++ b/src/dnode/inc/dnodeModule.h
@@ -13,29 +13,49 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef TDENGINE_DNODE_PLUGIN_H
-#define TDENGINE_DNODE_PLUGIN_H
+#ifndef TDENGINE_DNODE_MODULE_H
+#define TDENGINE_DNODE_MODULE_H
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 #include <stdint.h>
+#include <stdbool.h>
 #include <pthread.h>
 
-#include "tsched.h"
-#include "mgmt.h"
+#define tsetModuleStatus(mod) \
+  { tsModuleStatus |= (1 << mod); }
+#define tclearModuleStatus(mod) \
+  { tsModuleStatus &= ~(1 << mod); }
 
-char *(*taosBuildRspMsgToMnodeWithSize)(SMgmtObj *pObj, char type, int size);
-char *(*taosBuildReqMsgToMnodeWithSize)(SMgmtObj *pObj, char type, int size);
-char *(*taosBuildRspMsgToMnode)(SMgmtObj *pObj, char type);
-char *(*taosBuildReqMsgToMnode)(SMgmtObj *pObj, char type);
-int (*taosSendMsgToMnode)(SMgmtObj *pObj, char *msg, int msgLen);
-int (*taosSendSimpleRspToMnode)(SMgmtObj *pObj, char rsptype, char code);
+enum _module {
+  TSDB_MOD_MGMT,
+  TSDB_MOD_HTTP,
+  TSDB_MOD_MONITOR,
+  TSDB_MOD_MAX
+};
 
-void (*dnodeInitMgmtIp)();
-void (*dnodeProcessMsgFromMgmt)(SSchedMsg *sched);
-int (*dnodeInitMgmtConn)();
+typedef struct {
+  char  *name;
+  int  (*initFp)();
+  void (*cleanUpFp)();
+  int  (*startFp)();
+  void (*stopFp)();
+  int    num;
+  int    curNum;
+  int    equalVnodeNum;
+} SModule;
+
+extern uint32_t tsModuleStatus;
+extern SModule tsModule[];
+
+void dnodeAllocModules();
+int32_t dnodeInitModules();
+void dnodeCleanUpModules();
+
+extern void (*dnodeStartModules)();
+void dnodeStartModulesEdgeImp();
 
 #ifdef __cplusplus
 }
diff --git a/src/vnode/detail/inc/vnodeMgmt.h b/src/dnode/inc/dnodeService.h
similarity index 64%
rename from src/vnode/detail/inc/vnodeMgmt.h
rename to src/dnode/inc/dnodeService.h
index 453795e0bd..953c01413f 100644
--- a/src/vnode/detail/inc/vnodeMgmt.h
+++ b/src/dnode/inc/dnodeService.h
@@ -13,26 +13,18 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef TDENGINE_VNODEMGMT_H
-#define TDENGINE_VNODEMGMT_H
+#ifndef TDENGINE_DNODE_SERVICE_H
+#define TDENGINE_DNODE_SERVICE_H
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-typedef struct {
-  char  id[20];
-  char  sid;
-  void *thandle;
-  int   mgmtIndex;
-  char  status;  // 0:offline, 1:online
-} SMgmtObj;
-
-int vnodeProcessCreateMeterRequest(char *pMsg, int msgLen, SMgmtObj *pMgmtObj);
-int vnodeProcessRemoveMeterRequest(char *pMsg, int msgLen, SMgmtObj *pMgmtObj);
+void (*dnodeParseParameterK)();
+void dnodeParseParameterKComImp();
 
 #ifdef __cplusplus
 }
 #endif
 
-#endif  // TDENGINE_VNODEMGMT_H
+#endif
diff --git a/src/dnode/inc/dnodeSystem.h b/src/dnode/inc/dnodeSystem.h
index d3d6a28199..ee950db9b5 100644
--- a/src/dnode/inc/dnodeSystem.h
+++ b/src/dnode/inc/dnodeSystem.h
@@ -13,59 +13,32 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef TDENGINE_DNODESYSTEM_H
-#define TDENGINE_DNODESYSTEM_H
+#ifndef TDENGINE_DNODE_SYSTEM_H
+#define TDENGINE_DNODE_SYSTEM_H
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 #include <stdint.h>
+#include <stdbool.h>
 #include <pthread.h>
 
-#define tsetModuleStatus(mod) \
-  { tsModuleStatus |= (1 << mod); }
-#define tclearModuleStatus(mod) \
-  { tsModuleStatus &= ~(1 << mod); }
-
-enum _module { TSDB_MOD_MGMT, TSDB_MOD_HTTP, TSDB_MOD_MONITOR, TSDB_MOD_MAX };
-
-typedef struct {
-  char  *name;
-  int  (*initFp)();
-  void (*cleanUpFp)();
-  int  (*startFp)();
-  void (*stopFp)();
-  int    num;
-  int    curNum;
-  int    equalVnodeNum;
-} SModule;
-
-extern uint32_t        tsModuleStatus;
-extern SModule         tsModule[];
 extern pthread_mutex_t dmutex;
+extern bool tsDnodeStopping;
+extern int  (*dnodeInitStorage)();
+extern void (*dnodeCleanupStorage)();
+extern int  (*dnodeCheckSystem)();
 
-void dnodeCleanUpSystem();
 int  dnodeInitSystem();
-int  dnodeInitSystemSpec();
-void dnodeStartModuleSpec();
-void dnodeParseParameterK();
-void dnodeProcessModuleStatus(uint32_t status);
-void dnodeResetSystem();
+void dnodeCleanUpSystem();
 void dnodeCheckDbRunning(const char* dir);
 
-void vnodeCleanUpSystem();
-int  vnodeInitSystem();
-void dnodeInitMgmtIp();
-void vnodeInitQHandle();
 
-int  mgmtInitSystem();
-void mgmtCleanUpSystem();
-int  mgmtStartSystem();
-void mgmtStopSystem();
-
-int  taosCreateTierDirectory();
-void taosCleanupTier();
+void vnodePrintSystemInfo();
+int vnodeCfgDynamicOptions(char *msg);
+int vnodeInitStore();
+int vnodeInitPeer(int numOfThreads);
 
 #ifdef __cplusplus
 }
diff --git a/src/dnode/src/dnodeMgmt.c b/src/dnode/src/dnodeMgmt.c
index 9252a6ef30..2a10e0a746 100644
--- a/src/dnode/src/dnodeMgmt.c
+++ b/src/dnode/src/dnodeMgmt.c
@@ -18,12 +18,13 @@
 #include "os.h"
 
 #include "dnodeSystem.h"
+#include "dnodeMgmt.h"
+
 #include "taosmsg.h"
 #include "trpc.h"
 #include "tsched.h"
 #include "tsystem.h"
 #include "vnode.h"
-#include "vnodeMgmt.h"
 #include "vnodeSystem.h"
 #include "vnodeUtil.h"
 #include "vnodeStatus.h"
@@ -42,16 +43,93 @@ void vnodeUpdateHeadFile(int vnode, int oldTables, int newTables);
 void vnodeOpenVnode(int vnode);
 void vnodeCleanUpOneVnode(int vnode);
 
-int vnodeSaveCreateMsgIntoQueue(SVnodeObj *pVnode, char *pMsg, int msgLen);
 
-char *taosBuildRspMsgToMnodeWithSize(SMgmtObj *pObj, char type, int size);
-char *taosBuildReqMsgToMnodeWithSize(SMgmtObj *pObj, char type, int size);
-char *taosBuildRspMsgToMnode(SMgmtObj *pObj, char type);
-char *taosBuildReqMsgToMnode(SMgmtObj *pObj, char type);
-int   taosSendSimpleRspToMnode(SMgmtObj *pObj, char rsptype, char code);
-int   taosSendMsgToMnode(SMgmtObj *pObj, char *msg, int msgLen);
+char *(*taosBuildRspMsgToMnodeWithSize)(SMgmtObj *pObj, char type, int size) = NULL;
+char *(*taosBuildReqMsgToMnodeWithSize)(SMgmtObj *pObj, char type, int size) = NULL;
+char *(*taosBuildRspMsgToMnode)(SMgmtObj *pObj, char type) = NULL;
+char *(*taosBuildReqMsgToMnode)(SMgmtObj *pObj, char type) = NULL;
+int (*taosSendMsgToMnode)(SMgmtObj *pObj, char *msg, int msgLen) = NULL;
+int (*taosSendSimpleRspToMnode)(SMgmtObj *pObj, char rsptype, char code) = NULL;
+void (*dnodeInitMgmtIp)() = NULL;
+int (*dnodeInitMgmtConn)() = NULL;
 
-void dnodeProcessMsgFromMgmtImp(char *content, int msgLen, int msgType, SMgmtObj *pObj) {
+char *taosBuildRspMsgToMnodeWithSizeEdgeImp(SMgmtObj *pObj, char type, int size) {
+  char *pStart = (char *)malloc(size);
+  if (pStart == NULL) {
+    return NULL;
+  }
+
+  *pStart = type;
+  return pStart + 1;
+}
+
+char *taosBuildReqMsgToMnodeWithSizeEdgeImp(SMgmtObj *pObj, char type, int size) {
+  char *pStart = (char *)malloc(size);
+  if (pStart == NULL) {
+    return NULL;
+  }
+
+  *pStart = type;
+  return pStart + 1;
+}
+
+char *taosBuildRspMsgToMnodeEdgeImp(SMgmtObj *pObj, char type) {
+  return taosBuildRspMsgToMnodeWithSize(pObj, type, 256);
+}
+
+char *taosBuildReqMsgToMnodeEdgeImp(SMgmtObj *pObj, char type) {
+  return taosBuildReqMsgToMnodeWithSize(pObj, type, 256);
+}
+
+int taosSendMsgToMnodeEdgeImp(SMgmtObj *pObj, char *msg, int msgLen) {
+  dTrace("msg:%s is sent to mnode", taosMsg[(uint8_t)(*(msg-1))]);
+
+  /*
+   * Lite version has no message header, so minus one
+   */
+  SSchedMsg schedMsg;
+  schedMsg.fp = mgmtProcessMsgFromDnodeSpec;
+  schedMsg.msg = msg - 1;
+  schedMsg.ahandle = NULL;
+  schedMsg.thandle = NULL;
+  taosScheduleTask(dmQhandle, &schedMsg);
+
+  return 0;
+}
+
+int taosSendSimpleRspToMnodeEdgeImp(SMgmtObj *pObj, char rsptype, char code) {
+  char *pStart = taosBuildRspMsgToMnode(0, rsptype);
+  if (pStart == NULL) {
+    return 0;
+  }
+
+  *pStart = code;
+  taosSendMsgToMnode(0, pStart, code);
+
+  return 0;
+}
+
+void* dnodeProcessMsgFromMgmtEdgeImp(SSchedMsg *sched) {
+  char  msgType = *sched->msg;
+  char *content = sched->msg + 1;
+
+  dTrace("msg:%s is received from mgmt", taosMsg[(uint8_t)msgType]);
+
+  dnodeDistributeMsgFromMgmt(content, 0, msgType, 0);
+
+  free(sched->msg);
+
+  return NULL;
+}
+
+int dnodeInitMgmtConnEdgeImp() {
+  return 0;
+}
+
+void dnodeInitMgmtIpEdgeImp() {}
+
+
+void dnodeDistributeMsgFromMgmt(char *content, int msgLen, int msgType, SMgmtObj *pObj) {
   if (msgType == TSDB_MSG_TYPE_CREATE) {
     vnodeProcessCreateMeterRequest(content, msgLen, pObj);
   } else if (msgType == TSDB_MSG_TYPE_VPEERS) {
@@ -116,12 +194,12 @@ int vnodeProcessCreateMeterRequest(char *pMsg, int msgLen, SMgmtObj *pObj) {
     goto _over;
   }
 
-  if (pVnode->syncStatus == TSDB_VN_SYNC_STATUS_SYNCING) {
-    code = vnodeSaveCreateMsgIntoQueue(pVnode, pMsg, msgLen);
-    dTrace("vid:%d, create msg is saved into sync queue", vid);
-  } else {
+//  if (pVnode->syncStatus == TSDB_VN_SYNC_STATUS_SYNCING) {
+//    code = vnodeSaveCreateMsgIntoQueue(pVnode, pMsg, msgLen);
+//    dTrace("vid:%d, create msg is saved into sync queue", vid);
+//  } else {
     code = vnodeProcessCreateMeterMsg(pMsg, msgLen);
-  }
+//  }
 
 _over:
   taosSendSimpleRspToMnode(pObj, TSDB_MSG_TYPE_CREATE_RSP, code);
@@ -512,3 +590,4 @@ int vnodeSendMeterCfgMsg(int vnode, int sid) {
   msgLen = pMsg - pStart;
   return taosSendMsgToMnode(pObj, pStart, msgLen);
 }
+
diff --git a/src/dnode/src/dnodeModule.c b/src/dnode/src/dnodeModule.c
new file mode 100644
index 0000000000..b06069927a
--- /dev/null
+++ b/src/dnode/src/dnodeModule.c
@@ -0,0 +1,131 @@
+/*
+ * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3
+ * or later ("AGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#define _DEFAULT_SOURCE
+#include "os.h"
+#include "tlog.h"
+#include "tglobalcfg.h"
+#include "dnodeModule.h"
+#include "dnodeSystem.h"
+#include "monitorSystem.h"
+#include "httpSystem.h"
+#include "mgmtSystem.h"
+
+SModule tsModule[TSDB_MOD_MAX] = {0};
+uint32_t tsModuleStatus = 0;
+void (*dnodeStartModules)() = NULL;
+
+void dnodeAllocModules() {
+  tsModule[TSDB_MOD_MGMT].name = "mgmt";
+  tsModule[TSDB_MOD_MGMT].initFp = mgmtInitSystem;
+  tsModule[TSDB_MOD_MGMT].cleanUpFp = mgmtCleanUpSystem;
+  tsModule[TSDB_MOD_MGMT].startFp = mgmtStartSystem;
+  tsModule[TSDB_MOD_MGMT].stopFp = mgmtStopSystem;
+  tsModule[TSDB_MOD_MGMT].num = tsNumOfMPeers;
+  tsModule[TSDB_MOD_MGMT].curNum = 0;
+  tsModule[TSDB_MOD_MGMT].equalVnodeNum = tsMgmtEqualVnodeNum;
+
+  tsModule[TSDB_MOD_HTTP].name = "http";
+  tsModule[TSDB_MOD_HTTP].initFp = httpInitSystem;
+  tsModule[TSDB_MOD_HTTP].cleanUpFp = httpCleanUpSystem;
+  tsModule[TSDB_MOD_HTTP].startFp = httpStartSystem;
+  tsModule[TSDB_MOD_HTTP].stopFp = httpStopSystem;
+  tsModule[TSDB_MOD_HTTP].num = (tsEnableHttpModule == 1) ? -1 : 0;
+  tsModule[TSDB_MOD_HTTP].curNum = 0;
+  tsModule[TSDB_MOD_HTTP].equalVnodeNum = 0;
+
+  tsModule[TSDB_MOD_MONITOR].name = "monitor";
+  tsModule[TSDB_MOD_MONITOR].initFp = monitorInitSystem;
+  tsModule[TSDB_MOD_MONITOR].cleanUpFp = monitorCleanUpSystem;
+  tsModule[TSDB_MOD_MONITOR].startFp = monitorStartSystem;
+  tsModule[TSDB_MOD_MONITOR].stopFp = monitorStopSystem;
+  tsModule[TSDB_MOD_MONITOR].num = (tsEnableMonitorModule == 1) ? -1 : 0;
+  tsModule[TSDB_MOD_MONITOR].curNum = 0;
+  tsModule[TSDB_MOD_MONITOR].equalVnodeNum = 0;
+}
+
+void dnodeCleanUpModules() {
+  for (int mod = 1; mod < TSDB_MOD_MAX; ++mod) {
+    if (tsModule[mod].num != 0 && tsModule[mod].stopFp) {
+      (*tsModule[mod].stopFp)();
+    }
+    if (tsModule[mod].num != 0 && tsModule[mod].cleanUpFp) {
+      (*tsModule[mod].cleanUpFp)();
+    }
+  }
+
+  if (tsModule[TSDB_MOD_MGMT].num != 0 && tsModule[TSDB_MOD_MGMT].cleanUpFp) {
+    (*tsModule[TSDB_MOD_MGMT].cleanUpFp)();
+  }
+}
+
+void dnodeProcessModuleStatus(uint32_t status) {
+  if (tsDnodeStopping) {
+    return;
+  }
+
+  int news = status;
+  int olds = tsModuleStatus;
+
+  for (int moduleType = 0; moduleType < TSDB_MOD_MAX; ++moduleType) {
+    int newStatus = news & (1 << moduleType);
+    int oldStatus = olds & (1 << moduleType);
+
+    if (oldStatus > 0) {
+      if (newStatus == 0) {
+        if (tsModule[moduleType].stopFp) {
+          dPrint("module:%s is stopped on this node", tsModule[moduleType].name);
+          (*tsModule[moduleType].stopFp)();
+        }
+      }
+    } else if (oldStatus == 0) {
+      if (newStatus > 0) {
+        if (tsModule[moduleType].startFp) {
+          dPrint("module:%s is started on this node", tsModule[moduleType].name);
+          (*tsModule[moduleType].startFp)();
+        }
+      }
+    } else {
+    }
+  }
+  tsModuleStatus = status;
+}
+
+int32_t dnodeInitModules() {
+  for (int mod = 0; mod < TSDB_MOD_MAX; ++mod) {
+    if (tsModule[mod].num != 0 && tsModule[mod].initFp) {
+      if ((*tsModule[mod].initFp)() != 0) {
+        dError("TDengine initialization failed");
+        return -1;
+      }
+    }
+  }
+
+  return 0;
+}
+
+void dnodeStartModulesEdgeImp() {
+  for (int mod = 1; mod < TSDB_MOD_MAX; ++mod) {
+    if (tsModule[mod].num != 0 && tsModule[mod].startFp) {
+      if ((*tsModule[mod].startFp)() != 0) {
+        dError("failed to start module:%d", mod);
+      }
+    }
+  }
+
+  if (tsModule[TSDB_MOD_MGMT].num != 0 && tsModule[TSDB_MOD_MGMT].cleanUpFp) {
+    (*tsModule[TSDB_MOD_MGMT].cleanUpFp)();
+  }
+}
diff --git a/src/dnode/src/dnodePlugin.c b/src/dnode/src/dnodePlugin.c
deleted file mode 100644
index fe5f17bda0..0000000000
--- a/src/dnode/src/dnodePlugin.c
+++ /dev/null
@@ -1,113 +0,0 @@
-/*
- * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
- *
- * This program is free software: you can use, redistribute, and/or modify
- * it under the terms of the GNU Affero General Public License, version 3
- * or later ("AGPL"), as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#define _DEFAULT_SOURCE
-
-#include "dnodePlugin.h"
-#include "dnodeMgmt.h"
-
-
-#include "vnode.h"
-#include "vnodeMgmt.h"
-
-
-char *taosBuildRspMsgToMnodeWithSizeEdgeImp(SMgmtObj *pObj, char type, int size) {
-  char *pStart = (char *)malloc(size);
-  if (pStart == NULL) {
-    return NULL;
-  }
-
-  *pStart = type;
-  return pStart + 1;
-}
-
-char *taosBuildReqMsgToMnodeWithSizeEdgeImp(SMgmtObj *pObj, char type, int size) {
-  char *pStart = (char *)malloc(size);
-  if (pStart == NULL) {
-    return NULL;
-  }
-
-  *pStart = type;
-  return pStart + 1;
-}
-
-char *taosBuildRspMsgToMnodeEdgeImp(SMgmtObj *pObj, char type) {
-  return taosBuildRspMsgToMnodeWithSize(pObj, type, 256);
-}
-
-char *taosBuildReqMsgToMnodeEdgeImp(SMgmtObj *pObj, char type) {
-  return taosBuildReqMsgToMnodeWithSize(pObj, type, 256);
-}
-
-int taosSendMsgToMnodeEdgeImp(SMgmtObj *pObj, char *msg, int msgLen) {
-  dTrace("msg:%s is sent to mnode", taosMsg[(uint8_t)(*(msg-1))]);
-
-  /*
-   * Lite version has no message header, so minus one
-   */
-  SSchedMsg schedMsg;
-  schedMsg.fp = mgmtProcessMsgFromDnodeSpec;
-  schedMsg.msg = msg - 1;
-  schedMsg.ahandle = NULL;
-  schedMsg.thandle = NULL;
-  taosScheduleTask(dmQhandle, &schedMsg);
-
-  return 0;
-}
-
-int taosSendSimpleRspToMnodeEdgeImp(SMgmtObj *pObj, char rsptype, char code) {
-  char *pStart = taosBuildRspMsgToMnode(0, rsptype);
-  if (pStart == NULL) {
-    return 0;
-  }
-
-  *pStart = code;
-  taosSendMsgToMnode(0, pStart, code);
-
-  return 0;
-}
-
-void dnodeProcessMsgFromMgmtEdgeImp(SSchedMsg *sched) {
-  char  msgType = *sched->msg;
-  char *content = sched->msg + 1;
-
-  dTrace("msg:%s is received from mgmt", taosMsg[(uint8_t)msgType]);
-
-  dnodeProcessMsgFromMgmtImp(content, 0, msgType, 0);
-
-  free(sched->msg);
-}
-
-int dnodeInitMgmtConnEdgeImp() {
-  return 0;
-}
-
-void dnodeInitMgmtIpEdgeImp() {}
-
-void dnodeInitPlugin() {
-  dnodeInitMgmtConn = dnodeInitMgmtConnEdgeImp;
-  dnodeInitMgmtIp = dnodeInitMgmtIpEdgeImp;
-  dnodeProcessMsgFromMgmt = dnodeProcessMsgFromMgmtEdgeImp;
-
-  taosBuildRspMsgToMnodeWithSize = taosBuildRspMsgToMnodeWithSizeEdgeImp;
-  taosBuildReqMsgToMnodeWithSize = taosBuildReqMsgToMnodeWithSizeEdgeImp;
-  taosBuildRspMsgToMnode = taosBuildRspMsgToMnodeEdgeImp;
-  taosBuildReqMsgToMnode = taosBuildReqMsgToMnodeEdgeImp;
-  taosSendMsgToMnode = taosSendMsgToMnodeEdgeImp;
-  taosSendSimpleRspToMnode = taosSendSimpleRspToMnodeEdgeImp;
-}
-
-
-
diff --git a/src/dnode/src/dnodeService.c b/src/dnode/src/dnodeService.c
index 742efb7b6a..085451862c 100644
--- a/src/dnode/src/dnodeService.c
+++ b/src/dnode/src/dnodeService.c
@@ -22,6 +22,9 @@
 #include "tsdb.h"
 #include "vnode.h"
 
+void (*dnodeParseParameterK)() = NULL;
+void dnodeParseParameterKComImp() {}
+
 /* Termination handler */
 void signal_handler(int signum, siginfo_t *sigInfo, void *context) {
   if (signum == SIGUSR1) {
@@ -110,3 +113,5 @@ int main(int argc, char *argv[]) {
     sleep(1000);
   }
 }
+
+
diff --git a/src/dnode/src/dnodeSystem.c b/src/dnode/src/dnodeSystem.c
index d57c7580f4..2511329c45 100644
--- a/src/dnode/src/dnodeSystem.c
+++ b/src/dnode/src/dnodeSystem.c
@@ -15,83 +15,62 @@
 
 #define _DEFAULT_SOURCE
 #include "os.h"
-
-#include "mgmt.h"
-#include "vnode.h"
-
+#include "tsdb.h"
+#include "tlog.h"
+#include "ttimer.h"
+#include "dnodeMgmt.h"
+#include "dnodeModule.h"
+#include "dnodeService.h"
 #include "dnodeSystem.h"
-#include "httpSystem.h"
 #include "monitorSystem.h"
-#include "tcrc32c.h"
-#include "tglobalcfg.h"
+#include "httpSystem.h"
+#include "mgmtSystem.h"
+
 #include "vnode.h"
 
-SModule         tsModule[TSDB_MOD_MAX] = {0};
-uint32_t        tsModuleStatus = 0;
 pthread_mutex_t dmutex;
 extern int      vnodeSelectReqNum;
 extern int      vnodeInsertReqNum;
 void *          tsStatusTimer = NULL;
 bool            tsDnodeStopping = false;
 
-int  dnodeCheckConfig();
-void dnodeCountRequest(SCountInfo *info);
+// internal global, not configurable
+void *   vnodeTmrCtrl;
+void **  rpcQhandle;
+void *   dmQhandle;
+void *   queryQhandle;
+int      tsVnodePeers = TSDB_VNODES_SUPPORT - 1;
+int      tsMaxQueues;
+uint32_t tsRebootTime;
+int    (*dnodeInitStorage)() = NULL;
+void   (*dnodeCleanupStorage)() = NULL;
+int    (*dnodeCheckSystem)() = NULL;
 
-void dnodeInitModules() {
-  tsModule[TSDB_MOD_MGMT].name = "mgmt";
-  tsModule[TSDB_MOD_MGMT].initFp = mgmtInitSystem;
-  tsModule[TSDB_MOD_MGMT].cleanUpFp = mgmtCleanUpSystem;
-  tsModule[TSDB_MOD_MGMT].startFp = mgmtStartSystem;
-  tsModule[TSDB_MOD_MGMT].stopFp = mgmtStopSystem;
-  tsModule[TSDB_MOD_MGMT].num = tsNumOfMPeers;
-  tsModule[TSDB_MOD_MGMT].curNum = 0;
-  tsModule[TSDB_MOD_MGMT].equalVnodeNum = tsMgmtEqualVnodeNum;
-
-  tsModule[TSDB_MOD_HTTP].name = "http";
-  tsModule[TSDB_MOD_HTTP].initFp = httpInitSystem;
-  tsModule[TSDB_MOD_HTTP].cleanUpFp = httpCleanUpSystem;
-  tsModule[TSDB_MOD_HTTP].startFp = httpStartSystem;
-  tsModule[TSDB_MOD_HTTP].stopFp = httpStopSystem;
-  tsModule[TSDB_MOD_HTTP].num = (tsEnableHttpModule == 1) ? -1 : 0;
-  tsModule[TSDB_MOD_HTTP].curNum = 0;
-  tsModule[TSDB_MOD_HTTP].equalVnodeNum = 0;
-
-  tsModule[TSDB_MOD_MONITOR].name = "monitor";
-  tsModule[TSDB_MOD_MONITOR].initFp = monitorInitSystem;
-  tsModule[TSDB_MOD_MONITOR].cleanUpFp = monitorCleanUpSystem;
-  tsModule[TSDB_MOD_MONITOR].startFp = monitorStartSystem;
-  tsModule[TSDB_MOD_MONITOR].stopFp = monitorStopSystem;
-  tsModule[TSDB_MOD_MONITOR].num = (tsEnableMonitorModule == 1) ? -1 : 0;
-  tsModule[TSDB_MOD_MONITOR].curNum = 0;
-  tsModule[TSDB_MOD_MONITOR].equalVnodeNum = 0;
-}
+int32_t dnodeInitRpcQHandle();
+int32_t dnodeInitQueryQHandle();
+int32_t dnodeInitTmrCtl();
+void dnodeInitPlugin();
+void dnodeCountRequestImp(SCountInfo *info);
 
 void dnodeCleanUpSystem() {
-  if (tsDnodeStopping) return;
-  tsDnodeStopping = true;
+  if (tsDnodeStopping) {
+    return;
+  } else {
+    tsDnodeStopping = true;
+  }
 
   if (tsStatusTimer != NULL) {
     taosTmrStopA(&tsStatusTimer);
     tsStatusTimer = NULL;
   }
 
-  for (int mod = 1; mod < TSDB_MOD_MAX; ++mod) {
-    if (tsModule[mod].num != 0 && tsModule[mod].stopFp) {
-      (*tsModule[mod].stopFp)();
-    }
-    if (tsModule[mod].num != 0 && tsModule[mod].cleanUpFp) {
-      (*tsModule[mod].cleanUpFp)();
-    }
-  }
-
-  if (tsModule[TSDB_MOD_MGMT].num != 0 && tsModule[TSDB_MOD_MGMT].cleanUpFp) {
-    (*tsModule[TSDB_MOD_MGMT].cleanUpFp)();
-  }
+  dnodeCleanUpModules();
 
   vnodeCleanUpVnodes();
 
   taosCloseLogger();
-  taosCleanupTier();
+
+  dnodeCleanupStorage();
 }
 
 void dnodeCheckDbRunning(const char* dir) {
@@ -109,6 +88,8 @@ int dnodeInitSystem() {
   char        temp[128];
   struct stat dirstat;
 
+  dnodeInitPlugin();
+
   taosResolveCRC();
 
   tsRebootTime = taosGetTimestampSec();
@@ -117,10 +98,14 @@ int dnodeInitSystem() {
   // Read global configuration.
   tsReadGlobalLogConfig();
 
-  if (stat(logDir, &dirstat) < 0) mkdir(logDir, 0755);
+  if (stat(logDir, &dirstat) < 0) {
+    mkdir(logDir, 0755);
+  }
 
   sprintf(temp, "%s/taosdlog", logDir);
-  if (taosInitLog(temp, tsNumOfLogLines, 1) < 0) printf("failed to init log file\n");
+  if (taosInitLog(temp, tsNumOfLogLines, 1) < 0) {
+    printf("failed to init log file\n");
+  }
 
   if (!tsReadGlobalConfig()) {  // TODO : Change this function
     tsPrintGlobalConfig();
@@ -128,7 +113,7 @@ int dnodeInitSystem() {
     return -1;
   }
 
-  if (taosCreateTierDirectory() != 0) {
+  if (dnodeInitStorage() != 0) {
     dError("TDengine init tier directory failed");
     return -1;
   }
@@ -136,93 +121,93 @@ int dnodeInitSystem() {
   dnodeInitMgmtIp();
 
   tsPrintGlobalConfig();
+
   dPrint("Server IP address is:%s", tsPrivateIp);
 
   taosSetCoreDump();
 
   signal(SIGPIPE, SIG_IGN);
 
-  dnodeInitModules();
+  dnodeAllocModules();
+
   pthread_mutex_init(&dmutex, NULL);
 
   dPrint("starting to initialize TDengine ...");
 
-  vnodeInitQHandle();
-  if (dnodeInitSystemSpec() < 0) {
+  if (dnodeInitRpcQHandle() < 0) {
+    dError("failed to init query qhandle, exit");
+    return -1;
+  }
+
+  if (dnodeCheckSystem() < 0) {
     return -1;
   }
   
-  for (int mod = 0; mod < TSDB_MOD_MAX; ++mod) {
-    if (tsModule[mod].num != 0 && tsModule[mod].initFp) {
-      if ((*tsModule[mod].initFp)() != 0) {
-        dError("TDengine initialization failed");
-        return -1;
-      }
-    }
-  }
-
-  if (vnodeInitSystem() != 0) {
-    dError("TDengine vnodes initialization failed");
+  if (dnodeInitModules() < 0) {
     return -1;
   }
 
-  monitorCountReqFp = dnodeCountRequest;
+  if (dnodeInitTmrCtl() < 0) {
+    dError("failed to init timer, exit");
+    return -1;
+  }
 
-  dnodeStartModuleSpec();
+  if (dnodeInitQueryQHandle() < 0) {
+    dError("failed to init query qhandle, exit");
+    return -1;
+  }
+
+  if (vnodeInitStore() < 0) {
+    dError("failed to init vnode storage");
+    return -1;
+  }
+
+  int numOfThreads = (1.0 - tsRatioOfQueryThreads) * tsNumOfCores * tsNumOfThreadsPerCore / 2.0;
+  if (numOfThreads < 1) numOfThreads = 1;
+  if (vnodeInitPeer(numOfThreads) < 0) {
+    dError("failed to init vnode peer communication");
+    return -1;
+  }
+
+  if (dnodeInitMgmtConn() < 0) {
+    dError("failed to init communication to mgmt");
+    return -1;
+  }
+
+  if (vnodeInitShell() < 0) {
+    dError("failed to init communication to shell");
+    return -1;
+  }
+
+  if (vnodeInitVnodes() < 0) {
+    dError("failed to init store");
+    return -1;
+  }
+
+  mnodeCountRequestFp = dnodeCountRequestImp;
+
+  dnodeStartModules();
 
   dPrint("TDengine is initialized successfully");
 
   return 0;
 }
 
-void dnodeProcessModuleStatus(uint32_t status) {
-  if (tsDnodeStopping) return;
-
-  int news = status;
-  int olds = tsModuleStatus;
-
-  for (int moduleType = 0; moduleType < TSDB_MOD_MAX; ++moduleType) {
-    int newStatus = news & (1 << moduleType);
-    int oldStatus = olds & (1 << moduleType);
-
-    if (oldStatus > 0) {
-      if (newStatus == 0) {
-        if (tsModule[moduleType].stopFp) {
-          dPrint("module:%s is stopped on this node", tsModule[moduleType].name);
-          (*tsModule[moduleType].stopFp)();
-        }
-      }
-    } else if (oldStatus == 0) {
-      if (newStatus > 0) {
-        if (tsModule[moduleType].startFp) {
-          dPrint("module:%s is started on this node", tsModule[moduleType].name);
-          (*tsModule[moduleType].startFp)();
-        }
-      }
-    } else {
-    }
-  }
-  tsModuleStatus = status;
-}
-
 void dnodeResetSystem() {
   dPrint("reset the system ...");
-  for (int vnode = 0; vnode < TSDB_MAX_VNODES; ++vnode) vnodeRemoveVnode(vnode);
+  for (int vnode = 0; vnode < TSDB_MAX_VNODES; ++vnode) {
+    vnodeRemoveVnode(vnode);
+  }
   mgmtStopSystem();
 }
 
-void dnodeCountRequest(SCountInfo *info) {
+void dnodeCountRequestImp(SCountInfo *info) {
   httpGetReqCount(&info->httpReqNum);
   info->selectReqNum = atomic_exchange_32(&vnodeSelectReqNum, 0);
   info->insertReqNum = atomic_exchange_32(&vnodeInsertReqNum, 0);
 }
 
-
-//spec
-
-extern SModule tsModule[TSDB_MOD_MAX];
-
-int taosCreateTierDirectory() {
+int dnodeInitStorageComImp() {
   struct stat dirstat;
   strcpy(tsDirectory, dataDir);
   if (stat(dataDir, &dirstat) < 0) {
@@ -244,16 +229,67 @@ int taosCreateTierDirectory() {
   return 0;
 }
 
-int dnodeInitSystemSpec() { return 0; }
+void dnodeCleanupStorageComImp() {}
 
-void dnodeStartModuleSpec() {
-  for (int mod = 1; mod < TSDB_MOD_MAX; ++mod) {
-    if (tsModule[mod].num != 0 && tsModule[mod].startFp) {
-      if ((*tsModule[mod].startFp)() != 0) {
-        dError("failed to start module:%d", mod);
-      }
-    }
+int32_t dnodeInitQueryQHandle() {
+  int numOfThreads = tsRatioOfQueryThreads * tsNumOfCores * tsNumOfThreadsPerCore;
+  if (numOfThreads < 1) {
+    numOfThreads = 1;
   }
+
+  int32_t maxQueueSize = tsNumOfVnodesPerCore * tsNumOfCores * tsSessionsPerVnode;
+  dTrace("query task queue initialized, max slot:%d, task threads:%d", maxQueueSize,numOfThreads);
+
+  queryQhandle = taosInitSchedulerWithInfo(maxQueueSize, numOfThreads, "query", vnodeTmrCtrl);
+
+  return 0;
 }
 
-void dnodeParseParameterK() {}
+int32_t dnodeInitTmrCtl() {
+  vnodeTmrCtrl = taosTmrInit(TSDB_MAX_VNODES * (tsVnodePeers + 10) + tsSessionsPerVnode + 1000, 200, 60000, "DND-vnode");
+  if (vnodeTmrCtrl == NULL) {
+    dError("failed to init timer, exit");
+    return -1;
+  }
+
+  return 0;
+}
+
+int32_t dnodeInitRpcQHandle() {
+  tsMaxQueues = (1.0 - tsRatioOfQueryThreads)*tsNumOfCores*tsNumOfThreadsPerCore / 2.0;
+  if (tsMaxQueues < 1) tsMaxQueues = 1;
+
+  rpcQhandle = malloc(tsMaxQueues*sizeof(void *));
+
+  for (int i=0; i< tsMaxQueues; ++i )
+    rpcQhandle[i] = taosInitScheduler(tsSessionsPerVnode, 1, "dnode");
+
+  dmQhandle = taosInitScheduler(tsSessionsPerVnode, 1, "mgmt");
+
+  return 0;
+}
+
+
+int dnodeCheckSystemComImp() {
+  return 0;
+}
+
+void dnodeInitPlugin() {
+  dnodeInitMgmtConn = dnodeInitMgmtConnEdgeImp;
+  dnodeInitMgmtIp = dnodeInitMgmtIpEdgeImp;
+
+  taosBuildRspMsgToMnodeWithSize = taosBuildRspMsgToMnodeWithSizeEdgeImp;
+  taosBuildReqMsgToMnodeWithSize = taosBuildReqMsgToMnodeWithSizeEdgeImp;
+  taosBuildRspMsgToMnode = taosBuildRspMsgToMnodeEdgeImp;
+  taosBuildReqMsgToMnode = taosBuildReqMsgToMnodeEdgeImp;
+  taosSendMsgToMnode = taosSendMsgToMnodeEdgeImp;
+  taosSendSimpleRspToMnode = taosSendSimpleRspToMnodeEdgeImp;
+
+  dnodeParseParameterK = dnodeParseParameterKComImp;
+  dnodeCheckSystem = dnodeCheckSystemComImp;
+  dnodeInitStorage = dnodeInitStorageComImp;
+  dnodeCleanupStorage = dnodeCleanupStorageComImp;
+  dnodeStartModules = dnodeStartModulesEdgeImp;
+}
+
+
diff --git a/src/dnode/src/vnodeMgmt.c b/src/dnode/src/vnodeMgmt.c
index d8c600d1d9..4a2012aa35 100644
--- a/src/dnode/src/vnodeMgmt.c
+++ b/src/dnode/src/vnodeMgmt.c
@@ -14,100 +14,4 @@
  */
 
 #define _DEFAULT_SOURCE
-#include "os.h"
 
-#include "tsdb.h"
-#include "tsocket.h"
-#include "vnode.h"
-#include "vnodeSystem.h"
-
-// internal global, not configurable
-void *   vnodeTmrCtrl;
-void **  rpcQhandle;
-void *   dmQhandle;
-void *   queryQhandle;
-int      tsVnodePeers = TSDB_VNODES_SUPPORT - 1;
-int      tsMaxQueues;
-uint32_t tsRebootTime;
-
-void vnodeCleanUpSystem() {
-  vnodeCleanUpVnodes();
-}
-
-bool vnodeInitQueryHandle() {
-  int numOfThreads = tsRatioOfQueryThreads * tsNumOfCores * tsNumOfThreadsPerCore;
-  if (numOfThreads < 1) {
-    numOfThreads = 1;
-  }
-  
-  int32_t maxQueueSize = tsNumOfVnodesPerCore * tsNumOfCores * tsSessionsPerVnode;
-  dTrace("query task queue initialized, max slot:%d, task threads:%d", maxQueueSize,numOfThreads);
-  
-  queryQhandle = taosInitSchedulerWithInfo(maxQueueSize, numOfThreads, "query", vnodeTmrCtrl);
-  return true;
-}
-
-bool vnodeInitTmrCtl() {
-  vnodeTmrCtrl = taosTmrInit(TSDB_MAX_VNODES * (tsVnodePeers + 10) + tsSessionsPerVnode + 1000, 200, 60000, "DND-vnode");
-  if (vnodeTmrCtrl == NULL) {
-    dError("failed to init timer, exit");
-    return false;
-  }
-  return true;
-}
-
-int vnodeInitSystem() {
-
-  if (!vnodeInitTmrCtl()) {
-    dError("failed to init timer, exit");
-    return -1;
-  }
-  
-  if (!vnodeInitQueryHandle()) {
-    dError("failed to init query qhandle, exit");
-    return -1;
-  }
-
-  if (vnodeInitStore() < 0) {
-    dError("failed to init vnode storage");
-    return -1;
-  }
-
-  int numOfThreads = (1.0 - tsRatioOfQueryThreads) * tsNumOfCores * tsNumOfThreadsPerCore / 2.0;
-  if (numOfThreads < 1) numOfThreads = 1;
-  if (vnodeInitPeer(numOfThreads) < 0) {
-    dError("failed to init vnode peer communication");
-    return -1;
-  }
-
-  if (dnodeInitMgmtConn() < 0) {
-    dError("failed to init communication to mgmt");
-    return -1;
-  }
-
-  if (vnodeInitShell() < 0) {
-    dError("failed to init communication to shell");
-    return -1;
-  }
-
-  if (vnodeInitVnodes() < 0) {
-    dError("failed to init store");
-    return -1;
-  }
-
-  dPrint("vnode is initialized successfully");
-
-  return 0;
-}
-
-void vnodeInitQHandle() {
-  tsMaxQueues = (1.0 - tsRatioOfQueryThreads)*tsNumOfCores*tsNumOfThreadsPerCore / 2.0;
-  if (tsMaxQueues < 1) tsMaxQueues = 1;
-
-  rpcQhandle = malloc(tsMaxQueues*sizeof(void *));
-
-  for (int i=0; i< tsMaxQueues; ++i ) 
-    rpcQhandle[i] = taosInitScheduler(tsSessionsPerVnode, 1, "dnode");
-
-  dmQhandle = taosInitScheduler(tsSessionsPerVnode, 1, "mgmt");
-}
diff --git a/src/mnode/detail/CMakeLists.txt b/src/mnode/detail/CMakeLists.txt
index dfc8af5b2c..f94d1e8d1c 100644
--- a/src/mnode/detail/CMakeLists.txt
+++ b/src/mnode/detail/CMakeLists.txt
@@ -2,7 +2,7 @@ CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
 PROJECT(TDengine)
 
 IF ((TD_LINUX_64) OR (TD_LINUX_32 AND TD_ARM))
-  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/dnode/detail/inc)
+  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/dnode/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/mnode/detail/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/vnode/detail/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/client/inc)
diff --git a/src/mnode/detail/inc/mgmtSystem.h b/src/mnode/detail/inc/mgmtSystem.h
index 44bb0331e1..eabea9d418 100644
--- a/src/mnode/detail/inc/mgmtSystem.h
+++ b/src/mnode/detail/inc/mgmtSystem.h
@@ -40,6 +40,7 @@ void mgmtDoStatistic(void *handle, void *tmrId);
 
 void mgmtStartMgmtTimer();
 
+int mgmtStartSystem();
 void mgmtStopSystem();
 
 void mgmtCleanUpSystem();
diff --git a/src/mnode/detail/src/mgmtDnode.c b/src/mnode/detail/src/mgmtDnode.c
index 4066dd7669..c1e79e2f69 100644
--- a/src/mnode/detail/src/mgmtDnode.c
+++ b/src/mnode/detail/src/mgmtDnode.c
@@ -21,6 +21,7 @@
 #include "mgmt.h"
 #include "tschemautil.h"
 #include "vnodeStatus.h"
+#include "dnodeModule.h"
 
 bool mgmtCheckModuleInDnode(SDnodeObj *pDnode, int moduleType);
 int  mgmtGetDnodesNum();
diff --git a/src/mnode/detail/src/mgmtSystem.c b/src/mnode/detail/src/mgmtSystem.c
index 375e100a83..85f85c65e8 100644
--- a/src/mnode/detail/src/mgmtSystem.c
+++ b/src/mnode/detail/src/mgmtSystem.c
@@ -20,6 +20,7 @@
 #include "mgmt.h"
 #include "tsdb.h"
 #include "mgmtSystem.h"
+#include "dnodeModule.h"
 
 // global, not configurable
 char               mgmtDirectory[128];
diff --git a/src/mnode/lite/CMakeLists.txt b/src/mnode/lite/CMakeLists.txt
index 01d4f1f76d..28915050cf 100644
--- a/src/mnode/lite/CMakeLists.txt
+++ b/src/mnode/lite/CMakeLists.txt
@@ -3,7 +3,7 @@ PROJECT(TDengine)
 
 IF ((TD_LINUX_64) OR (TD_LINUX_32 AND TD_ARM))
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/inc)
-  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/dnode/detail/inc)
+  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/dnode/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/mnode/detail/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/vnode/detail/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/client/inc)
diff --git a/src/mnode/lite/src/mgmtBalance.spec.c b/src/mnode/lite/src/mgmtBalance.spec.c
index cf3e999e4f..f2ac4c517e 100644
--- a/src/mnode/lite/src/mgmtBalance.spec.c
+++ b/src/mnode/lite/src/mgmtBalance.spec.c
@@ -16,6 +16,7 @@
 #define _DEFAULT_SOURCE
 #include "mgmtBalance.h"
 #include "vnodeStatus.h"
+#include "dnodeModule.h"
 
 void mgmtStartBalanceTimer(int64_t mseconds) {}
 
diff --git a/src/mnode/lite/src/mgmtDnode.spec.c b/src/mnode/lite/src/mgmtDnode.spec.c
index 7fd9e7a2df..8ffa005e62 100644
--- a/src/mnode/lite/src/mgmtDnode.spec.c
+++ b/src/mnode/lite/src/mgmtDnode.spec.c
@@ -16,6 +16,7 @@
 #define _DEFAULT_SOURCE
 #include "mgmt.h"
 #include "vnodeStatus.h"
+#include "dnodeModule.h"
 
 SDnodeObj       dnodeObj;
 extern uint32_t tsRebootTime;
diff --git a/src/mnode/lite/src/mgmtDnodeInt.spec.c b/src/mnode/lite/src/mgmtDnodeInt.spec.c
index 5a124d9d99..ab6b7fff3b 100644
--- a/src/mnode/lite/src/mgmtDnodeInt.spec.c
+++ b/src/mnode/lite/src/mgmtDnodeInt.spec.c
@@ -28,7 +28,7 @@
 extern void *dmQhandle;
 void * mgmtStatusTimer = NULL;
 void   mgmtProcessMsgFromDnode(char *content, int msgLen, int msgType, SDnodeObj *pObj);
-void   dnodeProcessMsgFromMgmt(SSchedMsg *sched);
+void*   dnodeProcessMsgFromMgmtEdgeImp(SSchedMsg *sched);
 
 char *taosBuildRspMsgToDnodeWithSize(SDnodeObj *pObj, char type, int size) {
   char *pStart = (char *)malloc(size);
@@ -67,7 +67,7 @@ int taosSendMsgToDnode(SDnodeObj *pObj, char *msg, int msgLen) {
    * Lite version has no message header, so minus one
    */
   SSchedMsg schedMsg;
-  schedMsg.fp = dnodeProcessMsgFromMgmt;
+  schedMsg.fp = dnodeProcessMsgFromMgmtEdgeImp;
   schedMsg.msg = msg - 1;
   schedMsg.ahandle = NULL;
   schedMsg.thandle = NULL;
diff --git a/src/modules/monitor/inc/monitorSystem.h b/src/modules/monitor/inc/monitorSystem.h
index 339f2795b1..8093379dc0 100644
--- a/src/modules/monitor/inc/monitorSystem.h
+++ b/src/modules/monitor/inc/monitorSystem.h
@@ -29,6 +29,6 @@ typedef struct {
   int httpReqNum;
 } SCountInfo;
 
-extern void (*monitorCountReqFp)(SCountInfo *info);
+extern void (*mnodeCountRequestFp)(SCountInfo *info);
 
 #endif
\ No newline at end of file
diff --git a/src/modules/monitor/src/monitorSystem.c b/src/modules/monitor/src/monitorSystem.c
index f403a27293..133e826aa0 100644
--- a/src/modules/monitor/src/monitorSystem.c
+++ b/src/modules/monitor/src/monitorSystem.c
@@ -77,7 +77,7 @@ void monitorSaveAcctLog(char *acctId, int64_t currentPointsPerSecond, int64_t ma
                         int64_t totalOutbound, int64_t maxOutbound, int64_t totalDbs, int64_t maxDbs,
                         int64_t totalUsers, int64_t maxUsers, int64_t totalStreams, int64_t maxStreams,
                         int64_t totalConns, int64_t maxConns, int8_t accessState);
-void (*monitorCountReqFp)(SCountInfo *info) = NULL;
+void (*mnodeCountRequestFp)(SCountInfo *info) = NULL;
 void monitorExecuteSQL(char *sql);
 
 void monitorCheckDiskUsage(void *para, void *unused) {
@@ -335,7 +335,7 @@ int monitorBuildBandSql(char *sql) {
 int monitorBuildReqSql(char *sql) {
   SCountInfo info;
   info.httpReqNum = info.insertReqNum = info.selectReqNum = 0;
-  (*monitorCountReqFp)(&info);
+  (*mnodeCountRequestFp)(&info);
 
   return sprintf(sql, ", %d, %d, %d)", info.httpReqNum, info.selectReqNum, info.insertReqNum);
 }
@@ -355,7 +355,7 @@ void monitorSaveSystemInfo() {
     return;
   }
 
-  if (monitorCountReqFp == NULL) {
+  if (mnodeCountRequestFp == NULL) {
     return;
   }
 
diff --git a/src/util/src/tutil.c b/src/util/src/tutil.c
index 21d147d947..efe1defa57 100644
--- a/src/util/src/tutil.c
+++ b/src/util/src/tutil.c
@@ -564,10 +564,6 @@ char *taosIpStr(uint32_t ipInt) {
   return ipStr;
 }
 
-#ifndef CLUSTER
-void taosCleanupTier() {}
-#endif
-
 FORCE_INLINE float taos_align_get_float(const char* pBuf) {
   float fv = 0; 
   *(int32_t*)(&fv) = *(int32_t*)pBuf;
diff --git a/src/vnode/detail/CMakeLists.txt b/src/vnode/detail/CMakeLists.txt
index c913ad1ac0..7b186bda53 100644
--- a/src/vnode/detail/CMakeLists.txt
+++ b/src/vnode/detail/CMakeLists.txt
@@ -3,7 +3,7 @@ PROJECT(TDengine)
 
 IF ((TD_LINUX_64) OR (TD_LINUX_32 AND TD_ARM))
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/inc)
-  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/dnode/detail/inc)
+  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/dnode/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/mnode/detail/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/vnode/detail/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/client/inc)
diff --git a/src/vnode/detail/inc/vnode.h b/src/vnode/detail/inc/vnode.h
index 232e9d358d..b7d2dcbf09 100644
--- a/src/vnode/detail/inc/vnode.h
+++ b/src/vnode/detail/inc/vnode.h
@@ -304,7 +304,7 @@ typedef struct {
 extern int        tsMeterSizeOnFile;
 extern uint32_t   tsRebootTime;
 extern void **    rpcQhandle;
-extern void *     dmQhandle;
+
 extern void *     queryQhandle;
 extern int        tsVnodePeers;
 extern int        tsMaxVnode;
@@ -524,7 +524,6 @@ SConnSec *vnodeGetMeterSec(int vnode, int sid);
 int  vnodeCreateMeterObjFile(int vnode);
 
 // mgmt
-int dnodeInitMgmtConn();
 
 void vnodeCleanUpMgmt();
 
diff --git a/src/vnode/detail/inc/vnodeSystem.h b/src/vnode/detail/inc/vnodeSystem.h
index d730c0ea8f..c951be0b26 100644
--- a/src/vnode/detail/inc/vnodeSystem.h
+++ b/src/vnode/detail/inc/vnodeSystem.h
@@ -20,19 +20,7 @@
 extern "C" {
 #endif
 
-void vnodeCleanUpSystem();
 
-void vnodePrintSystemInfo();
-
-int vnodeInitSystem();
-
-int vnodeCfgDynamicOptions(char *msg);
-
-int vnodeInitStore();
-
-int vnodeInitPeer(int numOfThreads);
-
-int dnodeInitMgmtConn();
 
 #ifdef __cplusplus
 }
diff --git a/src/vnode/detail/src/vnodeMeter.c b/src/vnode/detail/src/vnodeMeter.c
index 79610a73ad..e03a40995c 100644
--- a/src/vnode/detail/src/vnodeMeter.c
+++ b/src/vnode/detail/src/vnodeMeter.c
@@ -21,7 +21,6 @@
 #include "ttime.h"
 #include "tutil.h"
 #include "vnode.h"
-#include "vnodeMgmt.h"
 #include "vnodeShell.h"
 #include "vnodeUtil.h"
 #include "vnodeStatus.h"
diff --git a/src/vnode/lite/CMakeLists.txt b/src/vnode/lite/CMakeLists.txt
index f07ea8298d..b5022da793 100644
--- a/src/vnode/lite/CMakeLists.txt
+++ b/src/vnode/lite/CMakeLists.txt
@@ -3,7 +3,7 @@ PROJECT(TDengine)
 
 IF ((TD_LINUX_64) OR (TD_LINUX_32 AND TD_ARM))
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/inc)
-  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/dnode/detail/inc)
+  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/dnode/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/mnode/detail/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/vnode/detail/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/client/inc)