diff --git a/source/dnode/mgmt/node_mgmt/inc/dmMgmt.h b/source/dnode/mgmt/node_mgmt/inc/dmMgmt.h
index 431c52ef95af53338c80df97ea27fefc974c053c..f9baa85b6316d4bbb5a3eee96b2a533e51ecc9c4 100644
--- a/source/dnode/mgmt/node_mgmt/inc/dmMgmt.h
+++ b/source/dnode/mgmt/node_mgmt/inc/dmMgmt.h
@@ -66,6 +66,7 @@ typedef struct {
 
 typedef struct SMgmtWrapper {
   SMgmtFunc      func;
+  struct SDnode *pDnode;
   void          *pMgmt;
   const char    *name;
   char          *path;
@@ -125,10 +126,7 @@ typedef struct SDnode {
 
 // dmEnv.c
 SDnode *dmInstance();
-bool    dmNotRunning();
 void    dmReportStartup(const char *pName, const char *pDesc);
-void   *dmGetClientRpc();
-void    dmGetMnodeEpSetGlobal(SEpSet *pEpSet);
 
 // dmMgmt.c
 int32_t       dmInitDnode(SDnode *pDnode, EDndNodeType rtype);
@@ -164,7 +162,7 @@ int32_t dmInitServer(SDnode *pDnode);
 void    dmCleanupServer(SDnode *pDnode);
 int32_t dmInitClient(SDnode *pDnode);
 void    dmCleanupClient(SDnode *pDnode);
-SMsgCb  dmGetMsgcb(SMgmtWrapper *pWrapper);
+SMsgCb  dmGetMsgcb(SDnode *pDnode);
 int32_t dmInitMsgHandle(SDnode *pDnode);
 int32_t dmProcessNodeMsg(SMgmtWrapper *pWrapper, SRpcMsg *pMsg);
 
diff --git a/source/dnode/mgmt/node_mgmt/src/dmEnv.c b/source/dnode/mgmt/node_mgmt/src/dmEnv.c
index cc2c7fa8152e1fa748b397dd78c92ff7d43c9267..8726fea9a0b9d738e79a70a477f900f75cb30ca8 100644
--- a/source/dnode/mgmt/node_mgmt/src/dmEnv.c
+++ b/source/dnode/mgmt/node_mgmt/src/dmEnv.c
@@ -16,7 +16,9 @@
 #define _DEFAULT_SOURCE
 #include "dmMgmt.h"
 
-SDnode global = {0};
+static SDnode global = {0};
+
+SDnode *dmInstance() { return &global; }
 
 static int32_t dmCheckRepeatInit(SDnode *pDnode) {
   if (atomic_val_compare_exchange_8(&pDnode->once, DND_ENV_INIT, DND_ENV_READY) != DND_ENV_INIT) {
@@ -49,10 +51,10 @@ static int32_t dmInitMonitor() {
 
 int32_t dmInit(int8_t rtype) {
   dInfo("start to init env");
-  if (dmCheckRepeatInit(&global) != 0) return -1;
+  if (dmCheckRepeatInit(dmInstance()) != 0) return -1;
   if (dmInitSystem() != 0) return -1;
   if (dmInitMonitor() != 0) return -1;
-  if (dmInitDnode(&global, rtype) != 0) return -1;
+  if (dmInitDnode(dmInstance(), rtype) != 0) return -1;
 
   dInfo("env is initialized");
   return 0;
@@ -69,7 +71,7 @@ static int32_t dmCheckRepeatCleanup(SDnode *pDnode) {
 void dmCleanup() {
   dDebug("start to cleanup env");
   if (dmCheckRepeatCleanup != 0) return;
-  dmCleanupDnode(&global);
+  dmCleanupDnode(dmInstance());
   monCleanup();
   syncCleanUp();
   walCleanUp();
@@ -83,17 +85,17 @@ void dmCleanup() {
 }
 
 void dmStop() {
-  SDnode *pDnode = &global;
+  SDnode *pDnode = dmInstance();
   pDnode->stop = true;
 }
 
 int32_t dmRun() {
-  SDnode *pDnode = &global;
+  SDnode *pDnode = dmInstance();
   return dmRunDnode(pDnode);
 }
 
 static int32_t dmProcessCreateNodeReq(EDndNodeType ntype, SRpcMsg *pMsg) {
-  SDnode *pDnode = &global;
+  SDnode *pDnode = dmInstance();
 
   SMgmtWrapper *pWrapper = dmAcquireWrapper(pDnode, ntype);
   if (pWrapper != NULL) {
@@ -130,7 +132,7 @@ static int32_t dmProcessCreateNodeReq(EDndNodeType ntype, SRpcMsg *pMsg) {
 }
 
 static int32_t dmProcessDropNodeReq(EDndNodeType ntype, SRpcMsg *pMsg) {
-  SDnode *pDnode = &global;
+  SDnode *pDnode = dmInstance();
 
   SMgmtWrapper *pWrapper = dmAcquireWrapper(pDnode, ntype);
   if (pWrapper == NULL) {
@@ -161,37 +163,27 @@ static int32_t dmProcessDropNodeReq(EDndNodeType ntype, SRpcMsg *pMsg) {
 }
 
 static bool dmIsNodeRequired(EDndNodeType ntype) {
-  SDnode *pDnode = &global;
+  SDnode *pDnode = dmInstance();
   return pDnode->wrappers[ntype].required;
 }
 
 SMgmtInputOpt dmBuildMgmtInputOpt(SMgmtWrapper *pWrapper) {
-  SDnode *pDnode = dmInstance();
-
   SMgmtInputOpt opt = {
       .path = pWrapper->path,
       .name = pWrapper->name,
-      .pData = &pDnode->data,
+      .pData = &pWrapper->pDnode->data,
       .processCreateNodeFp = dmProcessCreateNodeReq,
       .processDropNodeFp = dmProcessDropNodeReq,
       .isNodeRequiredFp = dmIsNodeRequired,
   };
 
-  opt.msgCb = dmGetMsgcb(pWrapper);
+  opt.msgCb = dmGetMsgcb(pWrapper->pDnode);
   return opt;
 }
 
 void dmReportStartup(const char *pName, const char *pDesc) {
-  SStartupInfo *pStartup = &global.startup;
+  SStartupInfo *pStartup = &(dmInstance()->startup);
   tstrncpy(pStartup->name, pName, TSDB_STEP_NAME_LEN);
   tstrncpy(pStartup->desc, pDesc, TSDB_STEP_DESC_LEN);
   dDebug("step:%s, %s", pStartup->name, pStartup->desc);
 }
-
-SDnode *dmInstance() { return &global; }
-
-bool dmNotRunning() { return global.status != DND_STAT_RUNNING; }
-
-void *dmGetClientRpc() { return global.trans.clientRpc; }
-
-void dmGetMnodeEpSetGlobal(SEpSet *pEpSet) { dmGetMnodeEpSet(&global.data, pEpSet); }
\ No newline at end of file
diff --git a/source/dnode/mgmt/node_mgmt/src/dmMgmt.c b/source/dnode/mgmt/node_mgmt/src/dmMgmt.c
index a3de98b7eef9f5b5fa333ddd660dd649582c44aa..96a9b67c90f7eb4d48eafb4ce18cb1ddff39f52c 100644
--- a/source/dnode/mgmt/node_mgmt/src/dmMgmt.c
+++ b/source/dnode/mgmt/node_mgmt/src/dmMgmt.c
@@ -132,6 +132,7 @@ int32_t dmInitDnode(SDnode *pDnode, EDndNodeType rtype) {
 
   for (EDndNodeType ntype = DNODE; ntype < NODE_END; ++ntype) {
     SMgmtWrapper *pWrapper = &pDnode->wrappers[ntype];
+    pWrapper->pDnode = pDnode;
     pWrapper->name = dmNodeName(ntype);
     pWrapper->ntype = ntype;
     pWrapper->proc.wrapper = pWrapper;
diff --git a/source/dnode/mgmt/node_mgmt/src/dmNodes.c b/source/dnode/mgmt/node_mgmt/src/dmNodes.c
index d8bb8126e3ceace6dff8962b92f745354e32f000..2bc5819df265f0f7511932af5f257ab1f078db18 100644
--- a/source/dnode/mgmt/node_mgmt/src/dmNodes.c
+++ b/source/dnode/mgmt/node_mgmt/src/dmNodes.c
@@ -64,7 +64,7 @@ static int32_t dmNewProc(SMgmtWrapper *pWrapper, EDndNodeType ntype) {
 }
 
 int32_t dmOpenNode(SMgmtWrapper *pWrapper) {
-  SDnode *pDnode = dmInstance();
+  SDnode *pDnode = pWrapper->pDnode;
 
   if (taosMkDir(pWrapper->path) != 0) {
     terrno = TAOS_SYSTEM_ERROR(errno);
diff --git a/source/dnode/mgmt/node_mgmt/src/dmTransport.c b/source/dnode/mgmt/node_mgmt/src/dmTransport.c
index 3bf9993c99865db65e7f001000bfde128e1684cc..414e00f7b4de58c558e3b37eeeaf8687ab462ef7 100644
--- a/source/dnode/mgmt/node_mgmt/src/dmTransport.c
+++ b/source/dnode/mgmt/node_mgmt/src/dmTransport.c
@@ -195,8 +195,9 @@ int32_t dmInitMsgHandle(SDnode *pDnode) {
 }
 
 static void dmSendRpcRedirectRsp(const SRpcMsg *pReq) {
-  SEpSet epSet = {0};
-  dmGetMnodeEpSetGlobal(&epSet);
+  SDnode *pDnode = dmInstance();
+  SEpSet  epSet = {0};
+  dmGetMnodeEpSet(&pDnode->data, &epSet);
 
   dDebug("RPC %p, req is redirected, num:%d use:%d", pReq->info.handle, epSet.numOfEps, epSet.inUse);
   for (int32_t i = 0; i < epSet.numOfEps; ++i) {
@@ -279,7 +280,6 @@ static inline void dmSendRedirectRsp(const SRpcMsg *pRsp, const SEpSet *pNewEpSe
 
 static inline void dmRegisterBrokenLinkArg(SRpcMsg *pMsg) {
   SMgmtWrapper *pWrapper = pMsg->info.wrapper;
-
   if (InChildProc(pWrapper->proc.ptype)) {
     dmPutToProcPQueue(&pWrapper->proc, pMsg, sizeof(SRpcMsg), pMsg->pCont, pMsg->contLen, DND_FUNC_REGIST);
   } else {
@@ -289,22 +289,15 @@ static inline void dmRegisterBrokenLinkArg(SRpcMsg *pMsg) {
 
 static inline void dmReleaseHandle(SRpcHandleInfo *pHandle, int8_t type) {
   SMgmtWrapper *pWrapper = pHandle->wrapper;
-
   if (InChildProc(pWrapper->proc.ptype)) {
-    SRpcMsg msg = {.info = *pHandle, .code = type};
+    SRpcMsg msg = {.code = type, .info = *pHandle};
     dmPutToProcPQueue(&pWrapper->proc, &msg, sizeof(SRpcMsg), NULL, 0, DND_FUNC_RELEASE);
   } else {
     rpcReleaseHandle(pHandle->handle, type);
   }
 }
 
-static bool rpcRfp(int32_t code) {
-  if (code == TSDB_CODE_RPC_REDIRECT) {
-    return true;
-  } else {
-    return false;
-  }
-}
+static bool rpcRfp(int32_t code) { return code == TSDB_CODE_RPC_REDIRECT; }
 
 int32_t dmInitClient(SDnode *pDnode) {
   SDnodeTrans *pTrans = &pDnode->trans;
@@ -345,8 +338,7 @@ void dmCleanupClient(SDnode *pDnode) {
   }
 }
 
-static inline int32_t dmGetHideUserAuth(SDnode *pDnode, char *user, char *spi, char *encrypt, char *secret,
-                                        char *ckey) {
+static inline int32_t dmGetHideUserAuth(char *user, char *spi, char *encrypt, char *secret, char *ckey) {
   int32_t code = 0;
   char    pass[TSDB_PASSWORD_LEN + 1] = {0};
 
@@ -370,7 +362,7 @@ static inline int32_t dmGetHideUserAuth(SDnode *pDnode, char *user, char *spi, c
 
 static inline int32_t dmRetrieveUserAuthInfo(SDnode *pDnode, char *user, char *spi, char *encrypt, char *secret,
                                              char *ckey) {
-  if (dmGetHideUserAuth(pDnode, user, spi, encrypt, secret, ckey) == 0) {
+  if (dmGetHideUserAuth(user, spi, encrypt, secret, ckey) == 0) {
     dTrace("user:%s, get auth from mnode, spi:%d encrypt:%d", user, *spi, *encrypt);
     return 0;
   }
@@ -410,7 +402,6 @@ int32_t dmInitServer(SDnode *pDnode) {
   SDnodeTrans *pTrans = &pDnode->trans;
 
   SRpcInit rpcInit = {0};
-
   strncpy(rpcInit.localFqdn, tsLocalFqdn, strlen(tsLocalFqdn));
   rpcInit.localPort = tsServerPort;
   rpcInit.label = "DND";
@@ -441,16 +432,15 @@ void dmCleanupServer(SDnode *pDnode) {
   }
 }
 
-SMsgCb dmGetMsgcb(SMgmtWrapper *pWrapper) {
-  SDnode *pDnode = dmInstance();
-  SMsgCb  msgCb = {
-       .clientRpc = dmInstance()->trans.clientRpc,
-       .sendReqFp = dmSendReq,
-       .sendRspFp = dmSendRsp,
-       .sendRedirectRspFp = dmSendRedirectRsp,
-       .registerBrokenLinkArgFp = dmRegisterBrokenLinkArg,
-       .releaseHandleFp = dmReleaseHandle,
-       .reportStartupFp = dmReportStartup,
+SMsgCb dmGetMsgcb(SDnode *pDnode) {
+  SMsgCb msgCb = {
+      .clientRpc = pDnode->trans.clientRpc,
+      .sendReqFp = dmSendReq,
+      .sendRspFp = dmSendRsp,
+      .sendRedirectRspFp = dmSendRedirectRsp,
+      .registerBrokenLinkArgFp = dmRegisterBrokenLinkArg,
+      .releaseHandleFp = dmReleaseHandle,
+      .reportStartupFp = dmReportStartup,
   };
   return msgCb;
 }