diff --git a/src/dnode/inc/dnodeMInfos.h b/src/dnode/inc/dnodeMInfos.h
index 9c3c85c47e2dbcc11c5b5a80fbf091bd93855149..2c3eef5d5d98e43db1ae783f9e7db2769fcf521e 100644
--- a/src/dnode/inc/dnodeMInfos.h
+++ b/src/dnode/inc/dnodeMInfos.h
@@ -24,9 +24,9 @@ extern "C" {
 
 int32_t dnodeInitMInfos();
 void    dnodeCleanupMInfos();
-void    dnodeUpdateMInfos(SMnodeInfos *minfos);
-void    dnodeUpdateEpSetForPeer(SRpcEpSet *epSet);
-void    dnodeGetMInfos(SMnodeInfos *minfos);
+void    dnodeUpdateMInfos(SMInfos *pMinfos);
+void    dnodeUpdateEpSetForPeer(SRpcEpSet *pEpSet);
+void    dnodeGetMInfos(SMInfos *pMinfos);
 bool    dnodeIsMasterEp(char *ep);
 
 #ifdef __cplusplus
diff --git a/src/dnode/src/dnodeMInfos.c b/src/dnode/src/dnodeMInfos.c
index cefe44aebe7f87803141ce3d75c45dca18463849..162de2243e71ba7ae4e74839753f98c1cb546237 100644
--- a/src/dnode/src/dnodeMInfos.c
+++ b/src/dnode/src/dnodeMInfos.c
@@ -22,12 +22,12 @@
 #include "dnodeInt.h"
 #include "dnodeMInfos.h"
 
-static SMnodeInfos tsMInfos;
-static SRpcEpSet   tsMEpSet;
+static SMInfos   tsMInfos;
+static SRpcEpSet tsMEpSet;
 static pthread_mutex_t tsMInfosMutex;
 
-static void    dnodeResetMInfos(SMnodeInfos *minfos);
-static void    dnodePrintMInfos(SMnodeInfos *minfos);
+static void    dnodeResetMInfos(SMInfos *minfos);
+static void    dnodePrintMInfos(SMInfos *minfos);
 static int32_t dnodeReadMInfos();
 static int32_t dnodeWriteMInfos();
 
@@ -44,14 +44,14 @@ int32_t dnodeInitMInfos() {
 
 void dnodeCleanupMInfos() { pthread_mutex_destroy(&tsMInfosMutex); }
 
-void dnodeUpdateMInfos(SMnodeInfos *minfos) {
-  if (minfos->mnodeNum <= 0 || minfos->mnodeNum > 3) {
-    dError("invalid mnode infos, mnodeNum:%d", minfos->mnodeNum);
+void dnodeUpdateMInfos(SMInfos *pMinfos) {
+  if (pMinfos->mnodeNum <= 0 || pMinfos->mnodeNum > 3) {
+    dError("invalid mnode infos, mnodeNum:%d", pMinfos->mnodeNum);
     return;
   }
 
-  for (int32_t i = 0; i < minfos->mnodeNum; ++i) {
-    SMnodeInfo *minfo = &minfos->mnodeInfos[i];
+  for (int32_t i = 0; i < pMinfos->mnodeNum; ++i) {
+    SMInfo *minfo = &pMinfos->mnodeInfos[i];
     minfo->mnodeId = htonl(minfo->mnodeId);
     if (minfo->mnodeId <= 0 || strlen(minfo->mnodeEp) <= 5) {
       dError("invalid mnode info:%d, mnodeId:%d mnodeEp:%s", i, minfo->mnodeId, minfo->mnodeEp);
@@ -60,14 +60,14 @@ void dnodeUpdateMInfos(SMnodeInfos *minfos) {
   }
 
   pthread_mutex_lock(&tsMInfosMutex);
-  if (minfos->mnodeNum != tsMInfos.mnodeNum) {
-    dnodeResetMInfos(minfos);
+  if (pMinfos->mnodeNum != tsMInfos.mnodeNum) {
+    dnodeResetMInfos(pMinfos);
     dnodeWriteMInfos();
     sdbUpdateAsync();
   } else {
-    int32_t size = sizeof(SMnodeInfos);
-    if (memcmp(minfos, &tsMInfos, size) != 0) {
-      dnodeResetMInfos(minfos);
+    int32_t size = sizeof(SMInfos);
+    if (memcmp(pMinfos, &tsMInfos, size) != 0) {
+      dnodeResetMInfos(pMinfos);
       dnodeWriteMInfos();
       sdbUpdateAsync();
     }
@@ -99,11 +99,11 @@ bool dnodeIsMasterEp(char *ep) {
   return isMaster;
 }
 
-void dnodeGetMInfos(SMnodeInfos *minfos) {
+void dnodeGetMInfos(SMInfos *pMinfos) {
   pthread_mutex_lock(&tsMInfosMutex);
-  memcpy(minfos, &tsMInfos, sizeof(SMnodeInfos));
+  memcpy(pMinfos, &tsMInfos, sizeof(SMInfos));
   for (int32_t i = 0; i < tsMInfos.mnodeNum; ++i) {
-    minfos->mnodeInfos[i].mnodeId = htonl(tsMInfos.mnodeInfos[i].mnodeId);
+    pMinfos->mnodeInfos[i].mnodeId = htonl(tsMInfos.mnodeInfos[i].mnodeId);
   }
   pthread_mutex_unlock(&tsMInfosMutex);
 }
@@ -123,15 +123,15 @@ void dnodeGetEpSetForShell(SRpcEpSet *epSet) {
   pthread_mutex_unlock(&tsMInfosMutex);
 }
 
-static void dnodePrintMInfos(SMnodeInfos *minfos) {
-  dInfo("print mnode infos, mnodeNum:%d inUse:%d", minfos->mnodeNum, minfos->inUse);
-  for (int32_t i = 0; i < minfos->mnodeNum; i++) {
-    dInfo("mnode index:%d, %s", minfos->mnodeInfos[i].mnodeId, minfos->mnodeInfos[i].mnodeEp);
+static void dnodePrintMInfos(SMInfos *pMinfos) {
+  dInfo("print minfos, mnodeNum:%d inUse:%d", pMinfos->mnodeNum, pMinfos->inUse);
+  for (int32_t i = 0; i < pMinfos->mnodeNum; i++) {
+    dInfo("mnode index:%d, %s", pMinfos->mnodeInfos[i].mnodeId, pMinfos->mnodeInfos[i].mnodeEp);
   }
 }
 
-static void dnodeResetMInfos(SMnodeInfos *minfos) {
-  if (minfos == NULL) {
+static void dnodeResetMInfos(SMInfos *pMinfos) {
+  if (pMinfos == NULL) {
     tsMEpSet.numOfEps = 1;
     taosGetFqdnPortFromEp(tsFirst, tsMEpSet.fqdn[0], &tsMEpSet.port[0]);
 
@@ -142,10 +142,10 @@ static void dnodeResetMInfos(SMnodeInfos *minfos) {
     return;
   }
 
-  if (minfos->mnodeNum == 0) return;
+  if (pMinfos->mnodeNum == 0) return;
 
-  int32_t size = sizeof(SMnodeInfos);
-  memcpy(&tsMInfos, minfos, size);
+  int32_t size = sizeof(SMInfos);
+  memcpy(&tsMInfos, pMinfos, size);
 
   tsMEpSet.inUse = tsMInfos.inUse;
   tsMEpSet.numOfEps = tsMInfos.mnodeNum;
@@ -153,7 +153,7 @@ static void dnodeResetMInfos(SMnodeInfos *minfos) {
     taosGetFqdnPortFromEp(tsMInfos.mnodeInfos[i].mnodeEp, tsMEpSet.fqdn[i], &tsMEpSet.port[i]);
   }
 
-  dnodePrintMInfos(minfos);
+  dnodePrintMInfos(pMinfos);
 }
 
 static int32_t dnodeReadMInfos() {
@@ -162,7 +162,7 @@ static int32_t dnodeReadMInfos() {
   char *      content = calloc(1, maxLen + 1);
   cJSON *     root = NULL;
   FILE *      fp = NULL;
-  SMnodeInfos minfos = {0};
+  SMInfos     minfos = {0};
 
   char file[TSDB_FILENAME_LEN + 20] = {0};
   sprintf(file, "%s/mnodeEpSet.json", tsDnodeDir);
@@ -241,7 +241,7 @@ PARSE_MINFOS_OVER:
   terrno = 0;
 
   for (int32_t i = 0; i < minfos.mnodeNum; ++i) {
-    SMnodeInfo *mInfo = &minfos.mnodeInfos[i];
+    SMInfo *mInfo = &minfos.mnodeInfos[i];
     dnodeUpdateEp(mInfo->mnodeId, mInfo->mnodeEp, NULL, NULL);
   }
   dnodeResetMInfos(&minfos);
diff --git a/src/dnode/src/dnodeMgmt.c b/src/dnode/src/dnodeMgmt.c
index 5c01f6471659f18c63d5eeeded8c0c5d73cd1867..15378c77c13b3ff423f1fb974c38bf89b5f2e0fa 100644
--- a/src/dnode/src/dnodeMgmt.c
+++ b/src/dnode/src/dnodeMgmt.c
@@ -472,8 +472,8 @@ static void dnodeProcessStatusRsp(SRpcMsg *pMsg) {
   }
 
   SStatusRsp *pStatusRsp = pMsg->pCont;
-  SMnodeInfos *minfos = &pStatusRsp->mnodes;
-  dnodeUpdateMInfos(minfos);
+  SMInfos *pMinfos = &pStatusRsp->mnodes;
+  dnodeUpdateMInfos(pMinfos);
 
   SDnodeCfg *pCfg = &pStatusRsp->dnodeCfg;
   pCfg->numOfVnodes = htonl(pCfg->numOfVnodes);
diff --git a/src/dnode/src/dnodeModule.c b/src/dnode/src/dnodeModule.c
index 7faa3c8913a7cc98cb7de8f33763d533100a7715..f664618f516c2cb36d116e3e4f47ed6daf28e042 100644
--- a/src/dnode/src/dnodeModule.c
+++ b/src/dnode/src/dnodeModule.c
@@ -147,8 +147,8 @@ void dnodeProcessModuleStatus(uint32_t moduleStatus) {
   }
 }
 
-bool dnodeStartMnode(SMnodeInfos *minfos) {
-  SMnodeInfos *mnodes = minfos;
+bool dnodeStartMnode(SMInfos *pMinfos) {
+  SMInfos *pMnodes = pMinfos;
 
   if (tsModuleStatus & (1 << TSDB_MOD_MNODE)) {
     dDebug("mnode module is already started, module status:%d", tsModuleStatus);
@@ -159,7 +159,7 @@ bool dnodeStartMnode(SMnodeInfos *minfos) {
   dInfo("start mnode module, module status:%d, new status:%d", tsModuleStatus, moduleStatus);
   dnodeProcessModuleStatus(moduleStatus);
 
-  sdbUpdateSync(mnodes);
+  sdbUpdateSync(pMnodes);
 
   return true;
 }
diff --git a/src/inc/dnode.h b/src/inc/dnode.h
index eef4490800a4191c2dee55c450cf99b8381bb64d..1efaa4a24bc848c99ac265f07ad340f09914ca30 100644
--- a/src/inc/dnode.h
+++ b/src/inc/dnode.h
@@ -45,7 +45,7 @@ void    dnodeGetEpSetForShell(SRpcEpSet *epSet);
 int32_t dnodeGetDnodeId();
 void    dnodeUpdateEp(int32_t dnodeId, char *ep, char *fqdn, uint16_t *port);
 bool    dnodeCheckEpChanged(int32_t dnodeId, char *epstr);
-bool    dnodeStartMnode(SMnodeInfos *minfos);
+bool    dnodeStartMnode(SMInfos *pMinfos);
 
 void  dnodeAddClientRspHandle(uint8_t msgType, void (*fp)(SRpcMsg *rpcMsg));
 void  dnodeSendMsgToDnode(SRpcEpSet *epSet, SRpcMsg *rpcMsg);
diff --git a/src/inc/taosmsg.h b/src/inc/taosmsg.h
index b4d3bec958c09a421d6b7efbe6f989fb463fe549..e8e302924490eb0ebcccf10468c3469107fe6dfe 100644
--- a/src/inc/taosmsg.h
+++ b/src/inc/taosmsg.h
@@ -591,13 +591,13 @@ typedef struct {
 typedef struct {
   int32_t mnodeId;
   char    mnodeEp[TSDB_EP_LEN];
-} SMnodeInfo;
+} SMInfo;
 
 typedef struct {
-  int8_t     inUse;
-  int8_t     mnodeNum;
-  SMnodeInfo mnodeInfos[TSDB_MAX_REPLICA];
-} SMnodeInfos;
+  int8_t inUse;
+  int8_t mnodeNum;
+  SMInfo mnodeInfos[TSDB_MAX_REPLICA];
+} SMInfos;
 
 typedef struct {
   int32_t  numOfMnodes;               // tsNumOfMnodes
@@ -632,7 +632,7 @@ typedef struct {
 } SStatusMsg;
 
 typedef struct {
-  SMnodeInfos   mnodes;
+  SMInfos       mnodes;
   SDnodeCfg     dnodeCfg;
   SVgroupAccess vgAccess[];
 } SStatusRsp;
@@ -761,7 +761,7 @@ typedef struct {
 typedef struct {
   int32_t dnodeId;
   char    dnodeEp[TSDB_EP_LEN];  // end point, hostname:port
-  SMnodeInfos mnodes;
+  SMInfos mnodes;
 } SCreateMnodeMsg;
 
 typedef struct {
diff --git a/src/mnode/inc/mnodeMnode.h b/src/mnode/inc/mnodeMnode.h
index 10cbcebe220c17d697fe24ddb398832895a42c9c..93f2fa11ea95f22ca4addf12496b79cdaddbf290 100644
--- a/src/mnode/inc/mnodeMnode.h
+++ b/src/mnode/inc/mnodeMnode.h
@@ -48,7 +48,7 @@ void    mnodeGetMnodeEpSetForShell(SRpcEpSet *epSet);
 char*   mnodeGetMnodeMasterEp();
 
 void    mnodeGetMnodeInfos(void *mnodes);
-void    mnodeUpdateMnodeEpSet();
+void    mnodeUpdateMnodeEpSet(SMInfos *pMnodes);
 
 #ifdef __cplusplus
 }
diff --git a/src/mnode/inc/mnodeSdb.h b/src/mnode/inc/mnodeSdb.h
index 90c4eac40a925ece5b6ab11d89df50ecaf927aed..31ea2da640ef3b20b84ca769a22637332d6ffe34 100644
--- a/src/mnode/inc/mnodeSdb.h
+++ b/src/mnode/inc/mnodeSdb.h
@@ -89,6 +89,7 @@ void*   sdbGetTableByRid(int64_t rid);
 bool    sdbIsMaster();
 bool    sdbIsServing();
 void    sdbUpdateMnodeRoles();
+int32_t sdbGetReplicaNum();
 
 int32_t sdbInsertRow(SSdbRow *pRow);
 int32_t sdbDeleteRow(SSdbRow *pRow);
diff --git a/src/mnode/src/mnodeMnode.c b/src/mnode/src/mnodeMnode.c
index d20d51f82b3a86506610e157203b2beb05a4373d..ba0b5a1865837957eb193498be581763a02b62f2 100644
--- a/src/mnode/src/mnodeMnode.c
+++ b/src/mnode/src/mnodeMnode.c
@@ -34,14 +34,14 @@
 #include "mnodeUser.h"
 #include "mnodeVgroup.h"
 
-int64_t              tsMnodeRid = -1;
-static void *        tsMnodeSdb = NULL;
-static int32_t       tsMnodeUpdateSize = 0;
-static SRpcEpSet     tsMnodeEpSetForShell;
-static SRpcEpSet     tsMnodeEpSetForPeer;
-static SMnodeInfos   tsMnodeInfos;
-static int32_t mnodeGetMnodeMeta(STableMetaMsg *pMeta, SShowObj *pShow, void *pConn);
-static int32_t mnodeRetrieveMnodes(SShowObj *pShow, char *data, int32_t rows, void *pConn);
+int64_t          tsMnodeRid = -1;
+static void *    tsMnodeSdb = NULL;
+static int32_t   tsMnodeUpdateSize = 0;
+static SRpcEpSet tsMEpForShell;
+static SRpcEpSet tsMEpForPeer;
+static SMInfos   tsMInfos;
+static int32_t   mnodeGetMnodeMeta(STableMetaMsg *pMeta, SShowObj *pShow, void *pConn);
+static int32_t   mnodeRetrieveMnodes(SShowObj *pShow, char *data, int32_t rows, void *pConn);
 
 #if defined(LINUX)
   static pthread_rwlock_t         tsMnodeLock;
@@ -127,7 +127,7 @@ static int32_t mnodeMnodeActionRestored() {
     mnodeCancelGetNextMnode(pIter);
   }
 
-  mnodeUpdateMnodeEpSet();
+  mnodeUpdateMnodeEpSet(NULL);
 
   return TSDB_CODE_SUCCESS;
 }
@@ -199,93 +199,119 @@ void mnodeCancelGetNextMnode(void *pIter) {
   sdbFreeIter(tsMnodeSdb, pIter);
 }
 
-void mnodeUpdateMnodeEpSet() {
-  mInfo("update mnodes epSet, numOfEps:%d ", mnodeGetMnodesNum());
+void mnodeUpdateMnodeEpSet(SMInfos *pMinfos) {
+  bool    set = false;
+  SMInfos mInfos = {0};
+  mInfo("vgId:1, update mnodes epSet, numOfEps:%d pMinfos:%p", mnodeGetMnodesNum(), pMinfos);
 
-  mnodeMnodeWrLock();
-
-  memset(&tsMnodeEpSetForShell, 0, sizeof(SRpcEpSet));
-  memset(&tsMnodeEpSetForPeer, 0, sizeof(SRpcEpSet));
-  memset(&tsMnodeInfos, 0, sizeof(SMnodeInfos));
-
-  int32_t index = 0;
-  void *  pIter = NULL;
-  while (1) {
-    SMnodeObj *pMnode = NULL;
-    pIter = mnodeGetNextMnode(pIter, &pMnode);
-    if (pMnode == NULL) break;
-
-    SDnodeObj *pDnode = mnodeGetDnode(pMnode->mnodeId);
-    if (pDnode != NULL) {
-      strcpy(tsMnodeEpSetForShell.fqdn[index], pDnode->dnodeFqdn);
-      tsMnodeEpSetForShell.port[index] = htons(pDnode->dnodePort);
-      mDebug("mnode:%d, for shell fqdn:%s %d", pDnode->dnodeId, tsMnodeEpSetForShell.fqdn[index], htons(tsMnodeEpSetForShell.port[index]));      
-
-      strcpy(tsMnodeEpSetForPeer.fqdn[index], pDnode->dnodeFqdn);
-      tsMnodeEpSetForPeer.port[index] = htons(pDnode->dnodePort + TSDB_PORT_DNODEDNODE);
-      mDebug("mnode:%d, for peer fqdn:%s %d", pDnode->dnodeId, tsMnodeEpSetForPeer.fqdn[index], htons(tsMnodeEpSetForPeer.port[index]));
-
-      tsMnodeInfos.mnodeInfos[index].mnodeId = htonl(pMnode->mnodeId);
-      strcpy(tsMnodeInfos.mnodeInfos[index].mnodeEp, pDnode->dnodeEp);
-
-      if (pMnode->role == TAOS_SYNC_ROLE_MASTER) {
-        tsMnodeEpSetForShell.inUse = index;
-        tsMnodeEpSetForPeer.inUse = index;
-        tsMnodeInfos.inUse = index;
+  if (pMinfos != NULL) {
+    set = true;
+    mInfos = *pMinfos;
+  }
+  else {
+    int32_t index = 0;
+    void *  pIter = NULL;
+    while (1) {
+      SMnodeObj *pMnode = NULL;
+      pIter = mnodeGetNextMnode(pIter, &pMnode);
+      if (pMnode == NULL) break;
+
+      SDnodeObj *pDnode = mnodeGetDnode(pMnode->mnodeId);
+      if (pDnode != NULL) {
+        set = true;
+        mInfos.mnodeInfos[index].mnodeId = pMnode->mnodeId;
+        strcpy(mInfos.mnodeInfos[index].mnodeEp, pDnode->dnodeEp);
+        if (pMnode->role == TAOS_SYNC_ROLE_MASTER) mInfos.inUse = index;
+        index++;
+      } else {
+        set = false;
       }
 
-      mInfo("mnode:%d, ep:%s %s", pDnode->dnodeId, pDnode->dnodeEp, pMnode->role == TAOS_SYNC_ROLE_MASTER ? "master" : "");
-      index++;
+      mnodeDecDnodeRef(pDnode);
+      mnodeDecMnodeRef(pMnode);
     }
 
-    mnodeDecDnodeRef(pDnode);
-    mnodeDecMnodeRef(pMnode);
+    mInfos.mnodeNum = index;
+    if (sdbGetReplicaNum() != mInfos.mnodeNum) {
+      set = false;
+      mDebug("vgId:1, mnodes info not synced, cfg:%d current:%d", sdbGetReplicaNum(), mInfos.mnodeNum);
+    }
   }
 
-  tsMnodeInfos.mnodeNum = index;
-  tsMnodeEpSetForShell.numOfEps = index;
-  tsMnodeEpSetForPeer.numOfEps = index;
+  mnodeMnodeWrLock();
+
+  if (set) {
+    memset(&tsMEpForShell, 0, sizeof(SRpcEpSet));
+    memset(&tsMEpForPeer, 0, sizeof(SRpcEpSet));
+    memcpy(&tsMInfos, &mInfos, sizeof(SMInfos));
+    tsMEpForShell.inUse = tsMInfos.inUse;
+    tsMEpForPeer.inUse = tsMInfos.inUse;
+    tsMEpForShell.numOfEps = tsMInfos.mnodeNum;
+    tsMEpForPeer.numOfEps = tsMInfos.mnodeNum;
+
+    mInfo("vgId:1, mnodes epSet is set, num:%d inUse:%d", tsMInfos.mnodeNum, tsMInfos.inUse);
+    for (int index = 0; index < mInfos.mnodeNum; ++index) {
+      SMInfo *pInfo = &tsMInfos.mnodeInfos[index];
+      taosGetFqdnPortFromEp(pInfo->mnodeEp, tsMEpForShell.fqdn[index], &tsMEpForShell.port[index]);
+      taosGetFqdnPortFromEp(pInfo->mnodeEp, tsMEpForPeer.fqdn[index], &tsMEpForPeer.port[index]);
+      tsMEpForPeer.port[index] = tsMEpForPeer.port[index] + TSDB_PORT_DNODEDNODE;
+
+      mInfo("vgId:1, mnode:%d, fqdn:%s shell:%u peer:%u", pInfo->mnodeId, tsMEpForShell.fqdn[index],
+            tsMEpForShell.port[index], tsMEpForPeer.port[index]);
+
+      tsMEpForShell.port[index] = htons(tsMEpForShell.port[index]);
+      tsMEpForPeer.port[index] = htons(tsMEpForPeer.port[index]);
+      pInfo->mnodeId = htonl(pInfo->mnodeId);
+    }
+  } else {
+    mInfo("vgId:1, mnodes epSet not set, num:%d inUse:%d", tsMInfos.mnodeNum, tsMInfos.inUse);
+    for (int index = 0; index < tsMInfos.mnodeNum; ++index) {
+      mInfo("vgId:1, index:%d, ep:%s:%u", index, tsMEpForShell.fqdn[index], htons(tsMEpForShell.port[index]));
+    }
+  }
 
   mnodeMnodeUnLock();
 }
 
 void mnodeGetMnodeEpSetForPeer(SRpcEpSet *epSet) {
   mnodeMnodeRdLock();
-  *epSet = tsMnodeEpSetForPeer;
+  *epSet = tsMEpForPeer;
   mnodeMnodeUnLock();
 
+  mTrace("vgId:1, mnodes epSet for peer is returned, num:%d inUse:%d", tsMEpForPeer.numOfEps, tsMEpForPeer.inUse);
   for (int32_t i = 0; i < epSet->numOfEps; ++i) {
     if (strcmp(epSet->fqdn[i], tsLocalFqdn) == 0 && htons(epSet->port[i]) == tsServerPort + TSDB_PORT_DNODEDNODE) {
       epSet->inUse = (i + 1) % epSet->numOfEps;
-      mTrace("mnode:%d, for peer ep:%s:%u, set inUse to %d", i, epSet->fqdn[i], htons(epSet->port[i]), epSet->inUse);
+      mTrace("vgId:1, mnode:%d, for peer ep:%s:%u, set inUse to %d", i, epSet->fqdn[i], htons(epSet->port[i]), epSet->inUse);
     } else {
-      mTrace("mpeer:%d, for peer ep:%s:%u", i, epSet->fqdn[i], htons(epSet->port[i]));
+      mTrace("vgId:1, mpeer:%d, for peer ep:%s:%u", i, epSet->fqdn[i], htons(epSet->port[i]));
     }
   }
 }
 
 void mnodeGetMnodeEpSetForShell(SRpcEpSet *epSet) {
   mnodeMnodeRdLock();
-  *epSet = tsMnodeEpSetForShell;
+  *epSet = tsMEpForShell;
   mnodeMnodeUnLock();
 
+  mTrace("vgId:1, mnodes epSet for shell is returned, num:%d inUse:%d", tsMEpForShell.numOfEps, tsMEpForShell.inUse);
   for (int32_t i = 0; i < epSet->numOfEps; ++i) {
     if (strcmp(epSet->fqdn[i], tsLocalFqdn) == 0 && htons(epSet->port[i]) == tsServerPort) {
       epSet->inUse = (i + 1) % epSet->numOfEps;
-      mTrace("mnode:%d, for shell ep:%s:%u, set inUse to %d", i, epSet->fqdn[i], htons(epSet->port[i]), epSet->inUse);
+      mTrace("vgId:1, mnode:%d, for shell ep:%s:%u, set inUse to %d", i, epSet->fqdn[i], htons(epSet->port[i]), epSet->inUse);
     } else {
-      mTrace("mnode:%d, for shell ep:%s:%u", i, epSet->fqdn[i], htons(epSet->port[i]));
+      mTrace("vgId:1, mnode:%d, for shell ep:%s:%u", i, epSet->fqdn[i], htons(epSet->port[i]));
     }
   }
 }
 
 char* mnodeGetMnodeMasterEp() {
-  return tsMnodeInfos.mnodeInfos[tsMnodeInfos.inUse].mnodeEp;
+  return tsMInfos.mnodeInfos[tsMInfos.inUse].mnodeEp;
 }
 
-void mnodeGetMnodeInfos(void *mnodeInfos) {
+void mnodeGetMnodeInfos(void *pMinfos) {
   mnodeMnodeRdLock();
-  *(SMnodeInfos *)mnodeInfos = tsMnodeInfos;
+  *(SMInfos *)pMinfos = tsMInfos;
   mnodeMnodeUnLock();
 }
 
@@ -298,7 +324,7 @@ static int32_t mnodeSendCreateMnodeMsg(int32_t dnodeId, char *dnodeEp) {
   } else {
     pCreate->dnodeId = htonl(dnodeId);
     tstrncpy(pCreate->dnodeEp, dnodeEp, sizeof(pCreate->dnodeEp));
-    pCreate->mnodes = tsMnodeInfos;
+    pCreate->mnodes = tsMInfos;
     bool found = false;
     for (int i = 0; i < pCreate->mnodes.mnodeNum; ++i) {
       if (pCreate->mnodes.mnodeInfos[i].mnodeId == htonl(dnodeId)) {
@@ -336,7 +362,7 @@ static int32_t mnodeCreateMnodeCb(SMnodeMsg *pMsg, int32_t code) {
     mError("failed to create mnode, reason:%s", tstrerror(code));
   } else {
     mDebug("mnode is created successfully");
-    mnodeUpdateMnodeEpSet();
+    mnodeUpdateMnodeEpSet(NULL);
     sdbUpdateAsync();
   }
 
@@ -380,7 +406,7 @@ void mnodeDropMnodeLocal(int32_t dnodeId) {
     mnodeDecMnodeRef(pMnode);
   }
 
-  mnodeUpdateMnodeEpSet();
+  mnodeUpdateMnodeEpSet(NULL);
   sdbUpdateAsync();
 }
 
@@ -400,7 +426,7 @@ int32_t mnodeDropMnode(int32_t dnodeId) {
 
   sdbDecRef(tsMnodeSdb, pMnode);
 
-  mnodeUpdateMnodeEpSet();
+  mnodeUpdateMnodeEpSet(NULL);
   sdbUpdateAsync();
 
   return code;
diff --git a/src/mnode/src/mnodeSdb.c b/src/mnode/src/mnodeSdb.c
index 2ef758baf19b3f4196699553db97cc1f954794f7..a8cd595fc8afb59dfb8fcf998969f558e079cd74 100644
--- a/src/mnode/src/mnodeSdb.c
+++ b/src/mnode/src/mnodeSdb.c
@@ -224,11 +224,13 @@ void sdbUpdateMnodeRoles() {
       sdbInfo("vgId:1, mnode:%d, role:%s", pMnode->mnodeId, syncRole[pMnode->role]);
       if (pMnode->mnodeId == dnodeGetDnodeId()) tsSdbMgmt.role = pMnode->role;
       mnodeDecMnodeRef(pMnode);
+    } else {
+      sdbDebug("vgId:1, mnode:%d not found", roles.nodeId[i]);
     }
   }
 
   mnodeUpdateClusterId();
-  mnodeUpdateMnodeEpSet();
+  mnodeUpdateMnodeEpSet(NULL);
 }
 
 static uint32_t sdbGetFileInfo(int32_t vgId, char *name, uint32_t *index, uint32_t eindex, int64_t *size, uint64_t *fversion) {
@@ -308,18 +310,20 @@ void sdbUpdateAsync() {
 }
 
 void sdbUpdateSync(void *pMnodes) {
-  SMnodeInfos *mnodes = pMnodes;
+  SMInfos *pMinfos = pMnodes;
   if (!mnodeIsRunning()) {
     mDebug("vgId:1, mnode not start yet, update sync config later");
     return;
   }
 
-  mDebug("vgId:1, update sync config in sync module, mnodes:%p", pMnodes);
+  mDebug("vgId:1, update sync config, pMnodes:%p", pMnodes);
 
   SSyncCfg syncCfg = {0};
   int32_t  index = 0;
 
-  if (mnodes == NULL) {
+  if (pMinfos == NULL) {
+    mDebug("vgId:1, mInfos not input, use mInfos in sdb, numOfMnodes:%d", syncCfg.replica);
+
     void *pIter = NULL;
     while (1) {
       SMnodeObj *pMnode = NULL;
@@ -339,16 +343,17 @@ void sdbUpdateSync(void *pMnodes) {
       mnodeDecMnodeRef(pMnode);
     }
     syncCfg.replica = index;
-    mDebug("vgId:1, mnodes info not input, use infos in sdb, numOfMnodes:%d", syncCfg.replica);
   } else {
-    for (index = 0; index < mnodes->mnodeNum; ++index) {
-      SMnodeInfo *node = &mnodes->mnodeInfos[index];
+    mDebug("vgId:1, mInfos input, numOfMnodes:%d", syncCfg.replica);
+
+    for (index = 0; index < pMinfos->mnodeNum; ++index) {
+      SMInfo *node = &pMinfos->mnodeInfos[index];
       syncCfg.nodeInfo[index].nodeId = node->mnodeId;
       taosGetFqdnPortFromEp(node->mnodeEp, syncCfg.nodeInfo[index].nodeFqdn, &syncCfg.nodeInfo[index].nodePort);
       syncCfg.nodeInfo[index].nodePort += TSDB_PORT_SYNC;
     }
     syncCfg.replica = index;
-    mDebug("vgId:1, mnodes info input, numOfMnodes:%d", syncCfg.replica);
+    mnodeUpdateMnodeEpSet(pMnodes);
   }
 
   syncCfg.quorum = (syncCfg.replica == 1) ? 1 : 2;
@@ -1103,3 +1108,7 @@ static void *sdbWorkerFp(void *pWorker) {
 
   return NULL;
 }
+
+int32_t sdbGetReplicaNum() {
+  return tsSdbMgmt.cfg.replica;
+}
\ No newline at end of file
diff --git a/src/sync/src/syncMain.c b/src/sync/src/syncMain.c
index adac532f2d4d9ad9f15459d8d406c196d0de0308..7e9e8cc2d0a66a8863e2fed65074bf2069570114 100644
--- a/src/sync/src/syncMain.c
+++ b/src/sync/src/syncMain.c
@@ -548,7 +548,7 @@ static SSyncPeer *syncAddPeer(SSyncNode *pNode, const SNodeInfo *pInfo) {
   pPeer->pSyncNode = pNode;
   pPeer->refCount = 1;
 
-  sInfo("%s, it is configured", pPeer->id);
+  sInfo("%s, it is configured, ep:%s:%u", pPeer->id, pPeer->fqdn, pPeer->port);
   int32_t ret = strcmp(pPeer->fqdn, tsNodeFqdn);
   if (pPeer->nodeId == 0 || (ret > 0) || (ret == 0 && pPeer->port > tsSyncPort)) {
     int32_t checkMs = 100 + (pNode->vgId * 10) % 100;