diff --git a/src/inc/sdb.h b/src/inc/sdb.h
index d0239522a9d2939cdd09374a5ad97937949d2400..4b4de1ac4b9b2575493f289f98660dbbb6704911 100644
--- a/src/inc/sdb.h
+++ b/src/inc/sdb.h
@@ -25,18 +25,10 @@ extern "C" {
 
 extern uint16_t    tsMgmtMgmtPort;
 extern uint16_t    tsMgmtSyncPort;
-extern int      sdbMaxNodes;
 extern int      tsMgmtPeerHBTimer;  // seconds
-extern char     sdbZone[];
-extern char     sdbMasterIp[];
-extern char     sdbPrivateIp[];
 extern char *   sdbStatusStr[];
 extern char *   sdbRoleStr[];
-extern void *   mnodeSdb;
-extern int      sdbExtConns;
 extern int      sdbMaster;
-extern uint32_t sdbPublicIp;
-extern uint32_t sdbMasterStartTime;
 extern SRpcIpSet *pSdbIpList;
 extern SRpcIpSet *pSdbPublicIpList;
 
@@ -89,14 +81,9 @@ typedef struct {
   // internal
   int   syncFd;
   void *hbTimer;
-  void *thandle;
   void *pSync;
 } SSdbPeer;
 
-SSdbPeer *sdbAddPeer(uint32_t ip, uint32_t publicIp, char role);
-
-void sdbUpdateIpList();
-
 extern SSdbPeer *sdbPeer[];
 #define sdbInited (sdbPeer[0])
 #define sdbStatus (sdbPeer[0]->status)
@@ -130,8 +117,6 @@ int sdbInitPeers(char *directory);
 
 void sdbCleanUpPeers();
 
-int sdbCfgNode(char *cont);
-
 int64_t sdbGetVersion();
 
 int32_t sdbGetRunStatus();
diff --git a/src/inc/taosmsg.h b/src/inc/taosmsg.h
index 7914c6cc865f9cfca3afde1a1c1baa1a44ab3518..bf031870101f282007b30a5f390bef3e0bf1fe45 100644
--- a/src/inc/taosmsg.h
+++ b/src/inc/taosmsg.h
@@ -600,17 +600,6 @@ typedef struct {
   SVnodeAccess vnodeAccess[];
 } SStatusRsp;
 
-// internal message
-typedef struct {
-  uint32_t destId;
-  uint32_t destIp;
-  char     tableId[TSDB_UNI_LEN + 1];
-  char     empty[3];
-  uint8_t  msgType;
-  int32_t  msgLen;
-  uint8_t  content[0];
-} SIntMsg;
-
 typedef struct {
   char spi;
   char encrypt;
diff --git a/src/mnode/inc/mgmtBalance.h b/src/mnode/inc/mgmtBalance.h
index 61331b9b3d3c8d90cfe48550511e44e07a8fbd5e..7a6bb3a9aa3d8d66d636dc069d575a9739e28e8c 100644
--- a/src/mnode/inc/mgmtBalance.h
+++ b/src/mnode/inc/mgmtBalance.h
@@ -22,7 +22,6 @@ extern "C" {
 
 #include "mnode.h"
 
-void    mgmtStartBalanceTimer(int64_t mseconds);
 int32_t mgmtInitBalance();
 void    mgmtCleanupBalance();
 int32_t mgmtAllocVnodes(SVgObj *pVgroup);
diff --git a/src/mnode/inc/mgmtDnode.h b/src/mnode/inc/mgmtDnode.h
index 193d4544a1bfbb71bae277b851bcdb71270c12e4..6532c98612c682e79f2ebad2e68a8d4f843f2cc5 100644
--- a/src/mnode/inc/mgmtDnode.h
+++ b/src/mnode/inc/mgmtDnode.h
@@ -58,6 +58,8 @@ SDnodeObj* mgmtGetDnode(uint32_t ip);
 extern  int32_t (*mgmtCreateDnodeFp)(uint32_t ip);
 extern  int32_t (*mgmtDropDnodeByIpFp)(uint32_t ip);
 
+void mgmtCalcNumOfFreeVnodes(SDnodeObj *pDnode);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/mnode/src/mgmtDb.c b/src/mnode/src/mgmtDb.c
index bedd51dcffa23cc791b301acc708778b7db60490..0186f51e16e001794c315c1026be24cc13f76512 100644
--- a/src/mnode/src/mgmtDb.c
+++ b/src/mnode/src/mgmtDb.c
@@ -455,9 +455,9 @@ int32_t mgmtAlterDb(SAcctObj *pAcct, SAlterDbMsg *pAlter) {
 //
 //  SVgObj *pVgroup = pDb->pHead;
 //  while (pVgroup != NULL) {
-//    mgmtUpdateVgroupState(pVgroup, TSDB_VG_LB_STATUS_UPDATE, 0);
+//    balanceUpdateVgroupState(pVgroup, TSDB_VG_LB_STATUS_UPDATE, 0);
 //    if (oldReplicaNum < pDb->cfg.replications) {
-//      if (!mgmtAddVnode(pVgroup, NULL, NULL)) {
+//      if (!balanceAddVnode(pVgroup, NULL, NULL)) {
 //        mWarn("db:%s vgroup:%d not enough dnode to add vnode", pAlter->db, pVgroup->vgId);
 //        code = TSDB_CODE_NO_ENOUGH_DNODES;
 //      }
diff --git a/src/mnode/src/mgmtDnode.c b/src/mnode/src/mgmtDnode.c
index 8fea669ea042943f8500b3c2c5a2d82e22f5581c..a9c784eca9573584f0aa5ec9df30d8da09016711 100644
--- a/src/mnode/src/mgmtDnode.c
+++ b/src/mnode/src/mgmtDnode.c
@@ -609,6 +609,9 @@ void *mgmtGetNextDnode(SShowObj *pShow, SDnodeObj **pDnode) {
 
 int32_t mgmtGetScoresMeta(STableMeta *pMeta, SShowObj *pShow, void *pConn) {
   if (mgmtGetScoresMetaFp) {
+    SUserObj *pUser = mgmtGetUserFromConn(pConn);
+    if (pUser == NULL) return 0;
+    if (strcmp(pUser->user, "root") != 0) return TSDB_CODE_NO_RIGHTS;
     return mgmtGetScoresMetaFp(pMeta, pShow, pConn);
   } else {
     return TSDB_CODE_OPS_NOT_SUPPORT;
diff --git a/src/mnode/src/mgmtDnodeInt.c b/src/mnode/src/mgmtDnodeInt.c
index 5a365f220a7098257ac7ea5e1273c17970671eaf..100e76b10bcb04a3b84bacc69b27ccb81cb506ca 100644
--- a/src/mnode/src/mgmtDnodeInt.c
+++ b/src/mnode/src/mgmtDnodeInt.c
@@ -312,7 +312,7 @@ int32_t mgmtCfgDynamicOptions(SDnodeObj *pDnode, char *msg) {
       mTrace("dnode:%s, custom score set from:%d to:%d", taosIpStr(pDnode->privateIp), pDnode->customScore, score);
       pDnode->customScore = score;
       mgmtUpdateDnode(pDnode);
-      mgmtStartBalanceTimer(15);
+      //mgmtStartBalanceTimer(15);
     }
     return TSDB_CODE_INVALID_SQL;
   } else if (strncasecmp(option, "bandwidth", 9) == 0) {
diff --git a/src/mnode/src/mgmtShell.c b/src/mnode/src/mgmtShell.c
index 5c3b540916803ab2882728581a37c926dfcf791e..a889c16f756b6090c67255e06d46af9c25b822d9 100644
--- a/src/mnode/src/mgmtShell.c
+++ b/src/mnode/src/mgmtShell.c
@@ -51,7 +51,6 @@ static void (*mgmtProcessShellMsg[TSDB_MSG_TYPE_MAX])(void *pCont, int32_t contL
 static void mgmtProcessUnSupportMsg(void *pCont, int32_t contLen, void *ahandle);
 static int  mgmtRetriveUserAuthInfo(char *user, char *spi, char *encrypt, char *secret, char *ckey);
 
-uint32_t        mgmtAccessSquence = 0;
 void *tsShellConnServer = NULL;
 
 void mgmtProcessTranRequest(SSchedMsg *sched) {
diff --git a/src/mnode/src/mgmtSystem.c b/src/mnode/src/mgmtSystem.c
index e36788a5ddb79896d9e89a958bdcba2999af784a..bcb5f64a7b626e322038d809073338e0f0f091ad 100644
--- a/src/mnode/src/mgmtSystem.c
+++ b/src/mnode/src/mgmtSystem.c
@@ -61,10 +61,6 @@ int32_t mgmtCheckMgmtRunning() {
 
   tsetModuleStatus(TSDB_MOD_MGMT);
 
-//  strcpy(sdbMasterIp, mgmtIpStr[0]);
-//  strcpy(sdbPrivateIp, tsPrivateIp);
-//  sdbPublicIp = inet_addr(tsPublicIp);
-
   return 0;
 }
 
diff --git a/src/mnode/src/mgmtVgroup.c b/src/mnode/src/mgmtVgroup.c
index 10b4244bf861fe06235048a92f949791ef440b11..b0ff80a8193c68a99a35a639348df54c12962e35 100644
--- a/src/mnode/src/mgmtVgroup.c
+++ b/src/mnode/src/mgmtVgroup.c
@@ -318,6 +318,27 @@ int32_t mgmtGetVgroupMeta(STableMeta *pMeta, SShowObj *pShow, void *pConn) {
   return 0;
 }
 
+char *mgmtGetVnodeStatus(SVgObj *pVgroup, SVnodeGid *pVnode) {
+  SDnodeObj *pDnode = mgmtGetDnode(pVnode->ip);
+  if (pDnode == NULL) {
+    mError("dnode:%s, vgroup:%d, vnode:%d dnode not exist", taosIpStr(pVnode->ip), pVgroup->vgId, pVnode->vnode);
+    return "null";
+  }
+
+  if (pDnode->status == TSDB_DN_STATUS_OFFLINE) {
+    return "offline";
+  }
+
+  SVnodeLoad *vload = pDnode->vload + pVnode->vnode;
+  if (vload->vgId != pVgroup->vgId || vload->vnode != pVnode->vnode) {
+    mError("dnode:%s, vgroup:%d, vnode:%d not same with dnode vgroup:%d vnode:%d",
+           taosIpStr(pVnode->ip), pVgroup->vgId, pVnode->vnode, vload->vgId, vload->vnode);
+    return "null";
+  }
+
+  return (char*)taosGetVnodeStatusStr(vload->status);
+}
+
 int32_t mgmtRetrieveVgroups(SShowObj *pShow, char *data, int32_t rows, void *pConn) {
   int32_t numOfRows = 0;
   SVgObj *pVgroup = NULL;
diff --git a/src/sdb/inc/sdbint.h b/src/sdb/inc/sdbint.h
index d0977f2e2fc18d72bfed79d8e47e9d3faf85bd34..8bb28b100ef88637f18073cdeb667fe4719f5e0a 100644
--- a/src/sdb/inc/sdbint.h
+++ b/src/sdb/inc/sdbint.h
@@ -48,6 +48,21 @@
 #define sdbPrint(...) \
   { tprintf("MND-SDB ", 255, __VA_ARGS__); }
 
+#define mpeerError(...)                            \
+  if (sdbDebugFlag & DEBUG_ERROR) {              \
+    tprintf("ERROR MND-MPEER ", 255, __VA_ARGS__); \
+  }
+#define mpeerWarn(...)                                      \
+  if (sdbDebugFlag & DEBUG_WARN) {                        \
+    tprintf("WARN  MND-MPEER ", sdbDebugFlag, __VA_ARGS__); \
+  }
+#define mpeerTrace(...)                               \
+  if (sdbDebugFlag & DEBUG_TRACE) {                 \
+    tprintf("MND-MPEER ", sdbDebugFlag, __VA_ARGS__); \
+  }
+#define mpeerPrint(...) \
+  { tprintf("MND-MPEER ", 255, __VA_ARGS__); }
+
 #define sdbLError(...) taosLogError(__VA_ARGS__) sdbError(__VA_ARGS__)
 #define sdbLWarn(...) taosLogWarn(__VA_ARGS__) sdbWarn(__VA_ARGS__)
 #define sdbLPrint(...) taosLogPrint(__VA_ARGS__) sdbPrint(__VA_ARGS__)
@@ -69,11 +84,6 @@ typedef struct {
   char *row;
 } SSdbUpdate;
 
-typedef struct {
-  char     numOfTables;
-  uint64_t version[];
-} SSdbSync;
-
 typedef struct {
   SSdbHeader header;
   int        maxRows;
@@ -109,23 +119,6 @@ typedef struct {
   char    data[];
 } SRowHead;
 
-typedef struct {
-  char *          buffer;
-  char *          offset;
-  int             trans;
-  int             bufferSize;
-  pthread_mutex_t qmutex;
-} STranQueue;
-
-typedef struct {
-  char     status;
-  char     role;
-  char     numOfMnodes;
-  uint64_t dbVersion;
-  uint32_t numOfDnodes;
-  uint32_t publicIp;
-} SMnodeStatus;
-
 typedef struct {
   uint8_t  dbId;
   char     type;
@@ -139,8 +132,8 @@ extern int        sdbMaxPeers;
 extern int        sdbNumOfTables;
 extern int64_t    sdbVersion;
 
-int sdbForwardDbReqToPeer(SSdbTable *pTable, char type, char *data, int dataLen);
-int sdbRetrieveRows(int fd, SSdbTable *pTable, uint64_t version);
+int mpeerForwardDbReqToPeer(SSdbTable *pTable, char type, char *data, int dataLen);
+int mpeerRetrieveRows(int fd, SSdbTable *pTable, uint64_t version);
 void sdbResetTable(SSdbTable *pTable);
 extern const int16_t sdbFileVersion;
 
diff --git a/src/sdb/src/sdbEngine.c b/src/sdb/src/sdbEngine.c
index 4b000a30ebd5406809dbe7d37575236d7af08162..0196ff084fa0eb3b1da21639d20e809f33edc234 100644
--- a/src/sdb/src/sdbEngine.c
+++ b/src/sdb/src/sdbEngine.c
@@ -23,7 +23,6 @@
 
 extern char   version[];
 const int16_t sdbFileVersion = 0;
-int           sdbExtConns = 0;
 SRpcIpSet    *pSdbIpList = NULL;
 SRpcIpSet    *pSdbPublicIpList = NULL;
 SSdbPeer *    sdbPeer[SDB_MAX_PEERS];  // first slot for self
@@ -431,7 +430,7 @@ int64_t sdbInsertRow(void *handle, void *row, int rowSize) {
 
   pthread_mutex_lock(&pTable->mutex);
 
-  if (sdbForwardDbReqToPeer(pTable, SDB_TYPE_INSERT, rowHead->data, rowHead->rowSize) == 0) {
+  if (mpeerForwardDbReqToPeer(pTable, SDB_TYPE_INSERT, rowHead->data, rowHead->rowSize) == 0) {
     pTable->id++;
     sdbVersion++;
     if (pTable->keyType == SDB_KEYTYPE_AUTO) {
@@ -548,7 +547,7 @@ int sdbDeleteRow(void *handle, void *row) {
 
   pthread_mutex_lock(&pTable->mutex);
 
-  if (sdbForwardDbReqToPeer(pTable, SDB_TYPE_DELETE, (char *)row, rowSize) == 0) {
+  if (mpeerForwardDbReqToPeer(pTable, SDB_TYPE_DELETE, (char *)row, rowSize) == 0) {
     pTable->id++;
     sdbVersion++;
 
@@ -666,7 +665,7 @@ int sdbUpdateRow(void *handle, void *row, int updateSize, char isUpdated) {
 
   pthread_mutex_lock(&pTable->mutex);
 
-  if (sdbForwardDbReqToPeer(pTable, SDB_TYPE_UPDATE, rowHead->data, rowHead->rowSize) == 0) {
+  if (mpeerForwardDbReqToPeer(pTable, SDB_TYPE_UPDATE, rowHead->data, rowHead->rowSize) == 0) {
     pTable->id++;
     sdbVersion++;
 
@@ -745,7 +744,7 @@ int sdbBatchUpdateRow(void *handle, void *row, int rowSize) {
   }
 
   pthread_mutex_lock(&pTable->mutex);
-  if (sdbForwardDbReqToPeer(pTable, SDB_TYPE_BATCH_UPDATE, row, rowSize) == 0) {
+  if (mpeerForwardDbReqToPeer(pTable, SDB_TYPE_BATCH_UPDATE, row, rowSize) == 0) {
     /* // write action */
     /* write(pTable->fd, &action, sizeof(action)); */
     /* pTable->size += sizeof(action); */
diff --git a/src/sdb/src/sdbstr.c b/src/sdb/src/sdbstr.c
index 90bf2a3d43cc8d998111480efc3f5061d58b7516..6df779dff7acb29c5a94076860f14437ec6cba22 100644
--- a/src/sdb/src/sdbstr.c
+++ b/src/sdb/src/sdbstr.c
@@ -24,7 +24,7 @@ char* sdbRoleStr[] = {"unauthed", "undecided", "master", "slave", "null"};
 /*
  * Lite Version sync request is always successful
  */
-int sdbForwardDbReqToPeer(SSdbTable *pTable, char type, char *data, int dataLen) {
+int mpeerForwardDbReqToPeer(SSdbTable *pTable, char type, char *data, int dataLen) {
   return 0;
 }