diff --git a/source/dnode/mgmt/impl/inc/dndInt.h b/source/dnode/mgmt/impl/inc/dndInt.h
index 258f40aad6..4094871bcd 100644
--- a/source/dnode/mgmt/impl/inc/dndInt.h
+++ b/source/dnode/mgmt/impl/inc/dndInt.h
@@ -109,9 +109,9 @@ typedef struct SDnode {
   SDnodeOpt   opt;
   SDnodeDir   dir;
   SDnodeMgmt  dmgmt;
-  SMnodeMgmt  m;
+  SMnodeMgmt  mmgmt;
   SVnodesMgmt vmgmt;
-  STransMgmt  t;
+  STransMgmt  tmgmt;
   SStartupMsg startup;
 } SDnode;
 
diff --git a/source/dnode/mgmt/impl/src/dndDnode.c b/source/dnode/mgmt/impl/src/dndDnode.c
index 962ce2b73d..fcafaf828f 100644
--- a/source/dnode/mgmt/impl/src/dndDnode.c
+++ b/source/dnode/mgmt/impl/src/dndDnode.c
@@ -84,17 +84,17 @@ void dndSendRedirectMsg(SDnode *pDnode, SRpcMsg *pMsg) {
   rpcSendRedirectRsp(pMsg->handle, &epSet);
 }
 
-static void dndUpdateMnodeEpSet(SDnode *pDnd, SEpSet *pEpSet) {
+static void dndUpdateMnodeEpSet(SDnode *pDnode, SEpSet *pEpSet) {
   dInfo("mnode is changed, num:%d inUse:%d", pEpSet->numOfEps, pEpSet->inUse);
 
-  dndWLockDnode(pDnd);
+  dndWLockDnode(pDnode);
 
-  pDnd->dmgmt.mnodeEpSet = *pEpSet;
+  pDnode->dmgmt.mnodeEpSet = *pEpSet;
   for (int32_t i = 0; i < pEpSet->numOfEps; ++i) {
     dInfo("mnode index:%d %s:%u", i, pEpSet->fqdn[i], pEpSet->port[i]);
   }
 
-  dndWUnLockDnode(pDnd);
+  dndWUnLockDnode(pDnode);
 }
 
 static void dndPrintDnodes(SDnode *pDnode) {
diff --git a/source/dnode/mgmt/impl/src/dndMnode.c b/source/dnode/mgmt/impl/src/dndMnode.c
index 5f3e48d8a1..d581c7761c 100644
--- a/source/dnode/mgmt/impl/src/dndMnode.c
+++ b/source/dnode/mgmt/impl/src/dndMnode.c
@@ -67,7 +67,7 @@ static int32_t dndProcessAlterMnodeReq(SDnode *pDnode, SRpcMsg *pRpcMsg);
 static int32_t dndProcessDropMnodeReq(SDnode *pDnode, SRpcMsg *pRpcMsg);
 
 static SMnode *dndAcquireMnode(SDnode *pDnode) {
-  SMnodeMgmt *pMgmt = &pDnode->m;
+  SMnodeMgmt *pMgmt = &pDnode->mmgmt;
   SMnode     *pMnode = NULL;
   int32_t     refCount = 0;
 
@@ -85,7 +85,7 @@ static SMnode *dndAcquireMnode(SDnode *pDnode) {
 }
 
 static void dndReleaseMnode(SDnode *pDnode, SMnode *pMnode) {
-  SMnodeMgmt *pMgmt = &pDnode->m;
+  SMnodeMgmt *pMgmt = &pDnode->mmgmt;
   int32_t     refCount = 0;
 
   taosRLockLatch(&pMgmt->latch);
@@ -98,7 +98,7 @@ static void dndReleaseMnode(SDnode *pDnode, SMnode *pMnode) {
 }
 
 static int32_t dndReadMnodeFile(SDnode *pDnode) {
-  SMnodeMgmt *pMgmt = &pDnode->m;
+  SMnodeMgmt *pMgmt = &pDnode->mmgmt;
   int32_t     code = TSDB_CODE_DND_MNODE_READ_FILE_ERROR;
   int32_t     len = 0;
   int32_t     maxLen = 300;
@@ -152,7 +152,7 @@ PRASE_MNODE_OVER:
 }
 
 static int32_t dndWriteMnodeFile(SDnode *pDnode) {
-  SMnodeMgmt *pMgmt = &pDnode->m;
+  SMnodeMgmt *pMgmt = &pDnode->mmgmt;
   char        file[PATH_MAX + 20] = {0};
   snprintf(file, sizeof(file), "%s.bak", pMgmt->file);
 
@@ -212,7 +212,7 @@ static int32_t dndStartMnodeWorker(SDnode *pDnode) {
 }
 
 static void dndStopMnodeWorker(SDnode *pDnode) {
-  SMnodeMgmt *pMgmt = &pDnode->m;
+  SMnodeMgmt *pMgmt = &pDnode->mmgmt;
 
   taosWLockLatch(&pMgmt->latch);
   pMgmt->deployed = 0;
@@ -296,7 +296,7 @@ static int32_t dndBuildMnodeOptions(SDnode *pDnode, SMnodeOptions *pOptions, SCr
 }
 
 static int32_t dndOpenMnode(SDnode *pDnode, SMnodeOptions *pOptions) {
-  SMnodeMgmt *pMgmt = &pDnode->m;
+  SMnodeMgmt *pMgmt = &pDnode->mmgmt;
 
   int32_t code = dndStartMnodeWorker(pDnode);
   if (code != 0) {
@@ -332,7 +332,7 @@ static int32_t dndOpenMnode(SDnode *pDnode, SMnodeOptions *pOptions) {
 }
 
 static int32_t dndAlterMnode(SDnode *pDnode, SMnodeOptions *pOptions) {
-  SMnodeMgmt *pMgmt = &pDnode->m;
+  SMnodeMgmt *pMgmt = &pDnode->mmgmt;
 
   SMnode *pMnode = dndAcquireMnode(pDnode);
   if (pMnode == NULL) {
@@ -351,7 +351,7 @@ static int32_t dndAlterMnode(SDnode *pDnode, SMnodeOptions *pOptions) {
 }
 
 static int32_t dndDropMnode(SDnode *pDnode) {
-  SMnodeMgmt *pMgmt = &pDnode->m;
+  SMnodeMgmt *pMgmt = &pDnode->mmgmt;
 
   SMnode *pMnode = dndAcquireMnode(pDnode);
   if (pMnode == NULL) {
@@ -458,7 +458,7 @@ static void dndProcessMnodeMgmtQueue(SDnode *pDnode, SRpcMsg *pMsg) {
 }
 
 static void dndProcessMnodeReadQueue(SDnode *pDnode, SMnodeMsg *pMsg) {
-  SMnodeMgmt *pMgmt = &pDnode->m;
+  SMnodeMgmt *pMgmt = &pDnode->mmgmt;
 
   SMnode *pMnode = dndAcquireMnode(pDnode);
   if (pMnode != NULL) {
@@ -472,7 +472,7 @@ static void dndProcessMnodeReadQueue(SDnode *pDnode, SMnodeMsg *pMsg) {
 }
 
 static void dndProcessMnodeWriteQueue(SDnode *pDnode, SMnodeMsg *pMsg) {
-  SMnodeMgmt *pMgmt = &pDnode->m;
+  SMnodeMgmt *pMgmt = &pDnode->mmgmt;
 
   SMnode *pMnode = dndAcquireMnode(pDnode);
   if (pMnode != NULL) {
@@ -486,7 +486,7 @@ static void dndProcessMnodeWriteQueue(SDnode *pDnode, SMnodeMsg *pMsg) {
 }
 
 static void dndProcessMnodeApplyQueue(SDnode *pDnode, SMnodeMsg *pMsg) {
-  SMnodeMgmt *pMgmt = &pDnode->m;
+  SMnodeMgmt *pMgmt = &pDnode->mmgmt;
 
   SMnode *pMnode = dndAcquireMnode(pDnode);
   if (pMnode != NULL) {
@@ -500,7 +500,7 @@ static void dndProcessMnodeApplyQueue(SDnode *pDnode, SMnodeMsg *pMsg) {
 }
 
 static void dndProcessMnodeSyncQueue(SDnode *pDnode, SMnodeMsg *pMsg) {
-  SMnodeMgmt *pMgmt = &pDnode->m;
+  SMnodeMgmt *pMgmt = &pDnode->mmgmt;
 
   SMnode *pMnode = dndAcquireMnode(pDnode);
   if (pMnode != NULL) {
@@ -532,7 +532,7 @@ static int32_t dndWriteMnodeMsgToQueue(SMnode *pMnode, taos_queue pQueue, SRpcMs
 }
 
 void dndProcessMnodeMgmtMsg(SDnode *pDnode, SRpcMsg *pRpcMsg, SEpSet *pEpSet) {
-  SMnodeMgmt *pMgmt = &pDnode->m;
+  SMnodeMgmt *pMgmt = &pDnode->mmgmt;
   SMnode     *pMnode = dndAcquireMnode(pDnode);
 
   SRpcMsg *pMsg = taosAllocateQitem(sizeof(SRpcMsg));
@@ -545,7 +545,7 @@ void dndProcessMnodeMgmtMsg(SDnode *pDnode, SRpcMsg *pRpcMsg, SEpSet *pEpSet) {
 }
 
 void dndProcessMnodeWriteMsg(SDnode *pDnode, SRpcMsg *pMsg, SEpSet *pEpSet) {
-  SMnodeMgmt *pMgmt = &pDnode->m;
+  SMnodeMgmt *pMgmt = &pDnode->mmgmt;
   SMnode     *pMnode = dndAcquireMnode(pDnode);
   if (pMnode == NULL || dndWriteMnodeMsgToQueue(pMnode, pMgmt->pWriteQ, pMsg) != 0) {
     SRpcMsg rsp = {.handle = pMsg->handle, .code = terrno};
@@ -557,7 +557,7 @@ void dndProcessMnodeWriteMsg(SDnode *pDnode, SRpcMsg *pMsg, SEpSet *pEpSet) {
 }
 
 void dndProcessMnodeSyncMsg(SDnode *pDnode, SRpcMsg *pMsg, SEpSet *pEpSet) {
-  SMnodeMgmt *pMgmt = &pDnode->m;
+  SMnodeMgmt *pMgmt = &pDnode->mmgmt;
   SMnode     *pMnode = dndAcquireMnode(pDnode);
   if (pMnode == NULL || dndWriteMnodeMsgToQueue(pMnode, pMgmt->pSyncQ, pMsg) != 0) {
     SRpcMsg rsp = {.handle = pMsg->handle, .code = terrno};
@@ -569,7 +569,7 @@ void dndProcessMnodeSyncMsg(SDnode *pDnode, SRpcMsg *pMsg, SEpSet *pEpSet) {
 }
 
 void dndProcessMnodeReadMsg(SDnode *pDnode, SRpcMsg *pMsg, SEpSet *pEpSet) {
-  SMnodeMgmt *pMgmt = &pDnode->m;
+  SMnodeMgmt *pMgmt = &pDnode->mmgmt;
   SMnode     *pMnode = dndAcquireMnode(pDnode);
   if (pMnode == NULL || dndWriteMnodeMsgToQueue(pMnode, pMgmt->pSyncQ, pMsg) != 0) {
     SRpcMsg rsp = {.handle = pMsg->handle, .code = terrno};
@@ -581,7 +581,7 @@ void dndProcessMnodeReadMsg(SDnode *pDnode, SRpcMsg *pMsg, SEpSet *pEpSet) {
 }
 
 static int32_t dndPutMsgIntoMnodeApplyQueue(SDnode *pDnode, SMnodeMsg *pMsg) {
-  SMnodeMgmt *pMgmt = &pDnode->m;
+  SMnodeMgmt *pMgmt = &pDnode->mmgmt;
 
   SMnode *pMnode = dndAcquireMnode(pDnode);
   if (pMnode == NULL) {
@@ -594,7 +594,7 @@ static int32_t dndPutMsgIntoMnodeApplyQueue(SDnode *pDnode, SMnodeMsg *pMsg) {
 }
 
 static int32_t dndAllocMnodeMgmtQueue(SDnode *pDnode) {
-  SMnodeMgmt *pMgmt = &pDnode->m;
+  SMnodeMgmt *pMgmt = &pDnode->mmgmt;
   pMgmt->pMgmtQ = tWorkerAllocQueue(&pMgmt->mgmtPool, NULL, (FProcessItem)dndProcessMnodeMgmtQueue);
   if (pMgmt->pMgmtQ == NULL) {
     terrno = TSDB_CODE_OUT_OF_MEMORY;
@@ -604,13 +604,13 @@ static int32_t dndAllocMnodeMgmtQueue(SDnode *pDnode) {
 }
 
 static void dndFreeMnodeMgmtQueue(SDnode *pDnode) {
-  SMnodeMgmt *pMgmt = &pDnode->m;
+  SMnodeMgmt *pMgmt = &pDnode->mmgmt;
   tWorkerFreeQueue(&pMgmt->mgmtPool, pMgmt->pMgmtQ);
   pMgmt->pMgmtQ = NULL;
 }
 
 static int32_t dndInitMnodeMgmtWorker(SDnode *pDnode) {
-  SMnodeMgmt  *pMgmt = &pDnode->m;
+  SMnodeMgmt  *pMgmt = &pDnode->mmgmt;
   SWorkerPool *pPool = &pMgmt->mgmtPool;
   pPool->name = "mnode-mgmt";
   pPool->min = 1;
@@ -624,13 +624,13 @@ static int32_t dndInitMnodeMgmtWorker(SDnode *pDnode) {
 }
 
 static void dndCleanupMnodeMgmtWorker(SDnode *pDnode) {
-  SMnodeMgmt *pMgmt = &pDnode->m;
+  SMnodeMgmt *pMgmt = &pDnode->mmgmt;
   ;
   tWorkerCleanup(&pMgmt->mgmtPool);
 }
 
 static int32_t dndAllocMnodeReadQueue(SDnode *pDnode) {
-  SMnodeMgmt *pMgmt = &pDnode->m;
+  SMnodeMgmt *pMgmt = &pDnode->mmgmt;
   pMgmt->pReadQ = tWorkerAllocQueue(&pMgmt->readPool, NULL, (FProcessItem)dndProcessMnodeReadQueue);
   if (pMgmt->pReadQ == NULL) {
     terrno = TSDB_CODE_OUT_OF_MEMORY;
@@ -640,13 +640,13 @@ static int32_t dndAllocMnodeReadQueue(SDnode *pDnode) {
 }
 
 static void dndFreeMnodeReadQueue(SDnode *pDnode) {
-  SMnodeMgmt *pMgmt = &pDnode->m;
+  SMnodeMgmt *pMgmt = &pDnode->mmgmt;
   tWorkerFreeQueue(&pMgmt->readPool, pMgmt->pReadQ);
   pMgmt->pReadQ = NULL;
 }
 
 static int32_t dndInitMnodeReadWorker(SDnode *pDnode) {
-  SMnodeMgmt  *pMgmt = &pDnode->m;
+  SMnodeMgmt  *pMgmt = &pDnode->mmgmt;
   SWorkerPool *pPool = &pMgmt->readPool;
   pPool->name = "mnode-read";
   pPool->min = 0;
@@ -660,12 +660,12 @@ static int32_t dndInitMnodeReadWorker(SDnode *pDnode) {
 }
 
 static void dndCleanupMnodeReadWorker(SDnode *pDnode) {
-  SMnodeMgmt *pMgmt = &pDnode->m;
+  SMnodeMgmt *pMgmt = &pDnode->mmgmt;
   tWorkerCleanup(&pMgmt->readPool);
 }
 
 static int32_t dndAllocMnodeWriteQueue(SDnode *pDnode) {
-  SMnodeMgmt *pMgmt = &pDnode->m;
+  SMnodeMgmt *pMgmt = &pDnode->mmgmt;
   pMgmt->pWriteQ = tWorkerAllocQueue(&pMgmt->writePool, NULL, (FProcessItem)dndProcessMnodeWriteQueue);
   if (pMgmt->pWriteQ == NULL) {
     terrno = TSDB_CODE_OUT_OF_MEMORY;
@@ -675,13 +675,13 @@ static int32_t dndAllocMnodeWriteQueue(SDnode *pDnode) {
 }
 
 static void dndFreeMnodeWriteQueue(SDnode *pDnode) {
-  SMnodeMgmt *pMgmt = &pDnode->m;
+  SMnodeMgmt *pMgmt = &pDnode->mmgmt;
   tWorkerFreeQueue(&pMgmt->writePool, pMgmt->pWriteQ);
   pMgmt->pWriteQ = NULL;
 }
 
 static int32_t dndAllocMnodeApplyQueue(SDnode *pDnode) {
-  SMnodeMgmt *pMgmt = &pDnode->m;
+  SMnodeMgmt *pMgmt = &pDnode->mmgmt;
   pMgmt->pApplyQ = tWorkerAllocQueue(&pMgmt->writePool, NULL, (FProcessItem)dndProcessMnodeApplyQueue);
   if (pMgmt->pApplyQ == NULL) {
     terrno = TSDB_CODE_OUT_OF_MEMORY;
@@ -691,13 +691,13 @@ static int32_t dndAllocMnodeApplyQueue(SDnode *pDnode) {
 }
 
 static void dndFreeMnodeApplyQueue(SDnode *pDnode) {
-  SMnodeMgmt *pMgmt = &pDnode->m;
+  SMnodeMgmt *pMgmt = &pDnode->mmgmt;
   tWorkerFreeQueue(&pMgmt->writePool, pMgmt->pApplyQ);
   pMgmt->pApplyQ = NULL;
 }
 
 static int32_t dndInitMnodeWriteWorker(SDnode *pDnode) {
-  SMnodeMgmt  *pMgmt = &pDnode->m;
+  SMnodeMgmt  *pMgmt = &pDnode->mmgmt;
   SWorkerPool *pPool = &pMgmt->writePool;
   pPool->name = "mnode-write";
   pPool->min = 0;
@@ -711,12 +711,12 @@ static int32_t dndInitMnodeWriteWorker(SDnode *pDnode) {
 }
 
 static void dndCleanupMnodeWriteWorker(SDnode *pDnode) {
-  SMnodeMgmt *pMgmt = &pDnode->m;
+  SMnodeMgmt *pMgmt = &pDnode->mmgmt;
   tWorkerCleanup(&pMgmt->writePool);
 }
 
 static int32_t dndAllocMnodeSyncQueue(SDnode *pDnode) {
-  SMnodeMgmt *pMgmt = &pDnode->m;
+  SMnodeMgmt *pMgmt = &pDnode->mmgmt;
   pMgmt->pSyncQ = tWorkerAllocQueue(&pMgmt->syncPool, NULL, (FProcessItem)dndProcessMnodeSyncQueue);
   if (pMgmt->pSyncQ == NULL) {
     terrno = TSDB_CODE_OUT_OF_MEMORY;
@@ -726,13 +726,13 @@ static int32_t dndAllocMnodeSyncQueue(SDnode *pDnode) {
 }
 
 static void dndFreeMnodeSyncQueue(SDnode *pDnode) {
-  SMnodeMgmt *pMgmt = &pDnode->m;
+  SMnodeMgmt *pMgmt = &pDnode->mmgmt;
   tWorkerFreeQueue(&pMgmt->syncPool, pMgmt->pSyncQ);
   pMgmt->pSyncQ = NULL;
 }
 
 static int32_t dndInitMnodeSyncWorker(SDnode *pDnode) {
-  SMnodeMgmt  *pMgmt = &pDnode->m;
+  SMnodeMgmt  *pMgmt = &pDnode->mmgmt;
   SWorkerPool *pPool = &pMgmt->syncPool;
   pPool->name = "mnode-sync";
   pPool->min = 0;
@@ -741,13 +741,13 @@ static int32_t dndInitMnodeSyncWorker(SDnode *pDnode) {
 }
 
 static void dndCleanupMnodeSyncWorker(SDnode *pDnode) {
-  SMnodeMgmt *pMgmt = &pDnode->m;
+  SMnodeMgmt *pMgmt = &pDnode->mmgmt;
   tWorkerCleanup(&pMgmt->syncPool);
 }
 
 int32_t dndInitMnode(SDnode *pDnode) {
   dInfo("dnode-mnode start to init");
-  SMnodeMgmt *pMgmt = &pDnode->m;
+  SMnodeMgmt *pMgmt = &pDnode->mmgmt;
   taosInitRWLatch(&pMgmt->latch);
 
   if (dndInitMnodeMgmtWorker(pDnode) != 0) {
@@ -791,7 +791,7 @@ int32_t dndInitMnode(SDnode *pDnode) {
 }
 
 void dndCleanupMnode(SDnode *pDnode) {
-  SMnodeMgmt *pMgmt = &pDnode->m;
+  SMnodeMgmt *pMgmt = &pDnode->mmgmt;
 
   dInfo("dnode-mnode start to clean up");
   dndStopMnodeWorker(pDnode);
@@ -801,7 +801,7 @@ void dndCleanupMnode(SDnode *pDnode) {
 }
 
 int32_t dndGetUserAuthFromMnode(SDnode *pDnode, char *user, char *spi, char *encrypt, char *secret, char *ckey) {
-  SMnodeMgmt *pMgmt = &pDnode->m;
+  SMnodeMgmt *pMgmt = &pDnode->mmgmt;
 
   SMnode *pMnode = dndAcquireMnode(pDnode);
   if (pMnode == NULL) {
diff --git a/source/dnode/mgmt/impl/src/dndTransport.c b/source/dnode/mgmt/impl/src/dndTransport.c
index 679e3ef5f9..d5f52bac8b 100644
--- a/source/dnode/mgmt/impl/src/dndTransport.c
+++ b/source/dnode/mgmt/impl/src/dndTransport.c
@@ -25,6 +25,10 @@
 #include "dndMnode.h"
 #include "dndVnodes.h"
 
+#define INTERNAL_USER "_internal"
+#define INTERNAL_CKEY "_key"
+#define INTERNAL_SECRET "_secret"
+
 static void dndInitMsgFp(STransMgmt *pMgmt) {
   // msg from client to dnode
   pMgmt->msgFp[TSDB_MSG_TYPE_SUBMIT] = dndProcessVnodeWriteMsg;
@@ -121,7 +125,7 @@ static void dndInitMsgFp(STransMgmt *pMgmt) {
 
 static void dndProcessResponse(void *parent, SRpcMsg *pMsg, SEpSet *pEpSet) {
   SDnode     *pDnode = parent;
-  STransMgmt *pMgmt = &pDnode->t;
+  STransMgmt *pMgmt = &pDnode->tmgmt;
 
   int32_t msgType = pMsg->msgType;
 
@@ -143,19 +147,19 @@ static void dndProcessResponse(void *parent, SRpcMsg *pMsg, SEpSet *pEpSet) {
 }
 
 static int32_t dndInitClient(SDnode *pDnode) {
-  STransMgmt *pMgmt = &pDnode->t;
+  STransMgmt *pMgmt = &pDnode->tmgmt;
 
   SRpcInit rpcInit;
   memset(&rpcInit, 0, sizeof(rpcInit));
   rpcInit.label = "DND-C";
   rpcInit.numOfThreads = 1;
   rpcInit.cfp = dndProcessResponse;
-  rpcInit.sessions = TSDB_MAX_VNODES << 4;
+  rpcInit.sessions = 8;
   rpcInit.connType = TAOS_CONN_CLIENT;
   rpcInit.idleTime = pDnode->opt.shellActivityTimer * 1000;
-  rpcInit.user = "-internal";
-  rpcInit.ckey = "-key";
-  rpcInit.secret = "-secret";
+  rpcInit.user = INTERNAL_USER;
+  rpcInit.ckey = INTERNAL_CKEY;
+  rpcInit.secret = INTERNAL_SECRET;
 
   pMgmt->clientRpc = rpcOpen(&rpcInit);
   if (pMgmt->clientRpc == NULL) {
@@ -167,7 +171,7 @@ static int32_t dndInitClient(SDnode *pDnode) {
 }
 
 static void dndCleanupClient(SDnode *pDnode) {
-  STransMgmt *pMgmt = &pDnode->t;
+  STransMgmt *pMgmt = &pDnode->tmgmt;
   if (pMgmt->clientRpc) {
     rpcClose(pMgmt->clientRpc);
     pMgmt->clientRpc = NULL;
@@ -176,8 +180,8 @@ static void dndCleanupClient(SDnode *pDnode) {
 }
 
 static void dndProcessRequest(void *param, SRpcMsg *pMsg, SEpSet *pEpSet) {
-  SDnode *pDnode = param;
-  STransMgmt *pMgmt = &pDnode->t;
+  SDnode     *pDnode = param;
+  STransMgmt *pMgmt = &pDnode->tmgmt;
 
   int32_t msgType = pMsg->msgType;
   if (msgType == TSDB_MSG_TYPE_NETWORK_TEST) {
@@ -218,24 +222,56 @@ static void dndProcessRequest(void *param, SRpcMsg *pMsg, SEpSet *pEpSet) {
 }
 
 static void dndSendMsgToMnodeRecv(SDnode *pDnode, SRpcMsg *pRpcMsg, SRpcMsg *pRpcRsp) {
-  STransMgmt *pMgmt = &pDnode->t;
+  STransMgmt *pMgmt = &pDnode->tmgmt;
 
   SEpSet epSet = {0};
   dndGetMnodeEpSet(pDnode, &epSet);
   rpcSendRecv(pMgmt->clientRpc, &epSet, pRpcMsg, pRpcRsp);
 }
 
+static int32_t dndAuthInternalMsg(SDnode *pDnode, char *user, char *spi, char *encrypt, char *secret, char *ckey) {
+  if (strcmp(user, INTERNAL_USER) == 0) {
+    // A simple temporary implementation
+    char pass[32] = {0};
+    taosEncryptPass((uint8_t *)(INTERNAL_SECRET), strlen(INTERNAL_SECRET), pass);
+    memcpy(secret, pass, TSDB_KEY_LEN);
+    *spi = 0;
+    *encrypt = 0;
+    *ckey = 0;
+    return 0;
+  } else if (strcmp(user, TSDB_NETTEST_USER) == 0) {
+    // A simple temporary implementation
+    char pass[32] = {0};
+    taosEncryptPass((uint8_t *)(TSDB_NETTEST_USER), strlen(TSDB_NETTEST_USER), pass);
+    memcpy(secret, pass, TSDB_KEY_LEN);
+    *spi = 0;
+    *encrypt = 0;
+    *ckey = 0;
+    return 0;
+  } else {
+    return -1;
+  }
+}
+
 static int32_t dndRetrieveUserAuthInfo(void *parent, char *user, char *spi, char *encrypt, char *secret, char *ckey) {
   SDnode *pDnode = parent;
 
-  if (dndGetUserAuthFromMnode(pDnode, user, spi, encrypt, secret, ckey) != 0) {
-    if (terrno != TSDB_CODE_APP_NOT_READY) {
-      dTrace("failed to get user auth from mnode since %s", terrstr());
-      return -1;
-    }
+  if (dndAuthInternalMsg(parent, user, spi, encrypt, secret, ckey) == 0) {
+    dTrace("get internal auth success");
+    return 0;
   }
 
-  dDebug("user:%s, send auth msg to mnodes", user);
+  if (dndGetUserAuthFromMnode(pDnode, user, spi, encrypt, secret, ckey) == 0) {
+    dTrace("get auth from internal mnode");
+    return 0;
+  }
+
+  if (terrno != TSDB_CODE_APP_NOT_READY) {
+    dTrace("failed to get user auth from internal mnode since %s", terrstr());
+    return -1;
+  }
+
+  dDebug("user:%s, send auth msg to other mnodes", user);
 
   SAuthMsg *pMsg = rpcMallocCont(sizeof(SAuthMsg));
   tstrncpy(pMsg->user, user, TSDB_USER_LEN);
@@ -246,14 +282,14 @@ static int32_t dndRetrieveUserAuthInfo(void *parent, char *user, char *spi, char
 
   if (rpcRsp.code != 0) {
     terrno = rpcRsp.code;
-    dError("user:%s, failed to get user auth from mnodes since %s", user, terrstr());
+    dError("user:%s, failed to get user auth from other mnodes since %s", user, terrstr());
   } else {
     SAuthRsp *pRsp = rpcRsp.pCont;
     memcpy(secret, pRsp->secret, TSDB_KEY_LEN);
     memcpy(ckey, pRsp->ckey, TSDB_KEY_LEN);
     *spi = pRsp->spi;
     *encrypt = pRsp->encrypt;
-    dDebug("user:%s, success to get user auth from mnodes", user);
+    dDebug("user:%s, success to get user auth from other mnodes", user);
   }
 
   rpcFreeCont(rpcRsp.pCont);
@@ -261,7 +297,7 @@ static int32_t dndRetrieveUserAuthInfo(void *parent, char *user, char *spi, char
 }
 
 static int32_t dndInitServer(SDnode *pDnode) {
-  STransMgmt *pMgmt = &pDnode->t;
+  STransMgmt *pMgmt = &pDnode->tmgmt;
   dndInitMsgFp(pMgmt);
 
   int32_t numOfThreads = (int32_t)((pDnode->opt.numOfCores * pDnode->opt.numOfThreadsPerCore) / 2.0);
@@ -290,7 +326,7 @@ static int32_t dndInitServer(SDnode *pDnode) {
 }
 
 static void dndCleanupServer(SDnode *pDnode) {
-  STransMgmt *pMgmt = &pDnode->t;
+  STransMgmt *pMgmt = &pDnode->tmgmt;
   if (pMgmt->serverRpc) {
     rpcClose(pMgmt->serverRpc);
     pMgmt->serverRpc = NULL;
@@ -317,7 +353,7 @@ void dndCleanupTrans(SDnode *pDnode) {
 }
 
 void dndSendMsgToDnode(SDnode *pDnode, SEpSet *pEpSet, SRpcMsg *pMsg) {
-  STransMgmt *pMgmt = &pDnode->t;
+  STransMgmt *pMgmt = &pDnode->tmgmt;
   rpcSendRequest(pMgmt->clientRpc, pEpSet, pMsg, NULL);
 }
 
diff --git a/source/dnode/mnode/impl/src/mnodeAuth.c b/source/dnode/mnode/impl/src/mnodeAuth.c
index ddd2b91ff3..f8e704d16d 100644
--- a/source/dnode/mnode/impl/src/mnodeAuth.c
+++ b/source/dnode/mnode/impl/src/mnodeAuth.c
@@ -21,16 +21,5 @@ int32_t mnodeInitAuth() { return 0; }
 void    mnodeCleanupAuth() {}
 
 int32_t mnodeRetriveAuth(SMnode *pMnode, char *user, char *spi, char *encrypt, char *secret, char *ckey) {
-  if (strcmp(user, TSDB_NETTEST_USER) == 0) {
-    char pass[32] = {0};
-    taosEncryptPass((uint8_t *)user, strlen(user), pass);
-    *spi = 0;
-    *encrypt = 0;
-    *ckey = 0;
-    memcpy(secret, pass, TSDB_KEY_LEN);
-    mDebug("nettest user is authorized");
-    return 0;
-  }
-
   return 0;
 }
\ No newline at end of file