diff --git a/source/dnode/mgmt/exec/inc/dndExec.h b/source/dnode/mgmt/exec/inc/dndExec.h
index 6bb4b84b2a..72523e52ad 100644
--- a/source/dnode/mgmt/exec/inc/dndExec.h
+++ b/source/dnode/mgmt/exec/inc/dndExec.h
@@ -14,12 +14,13 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef _TD_DMN_INT_H_
-#define _TD_DMN_INT_H_
+#ifndef _TD_DND_EXEC_H_
+#define _TD_DND_EXEC_H_
 
-#include "tconfig.h"
 #include "dnode.h"
+
 #include "taoserror.h"
+#include "tconfig.h"
 #include "tglobal.h"
 #include "tlog.h"
 #include "version.h"
@@ -35,14 +36,14 @@ extern "C" {
 #define dDebug(...) { if (dDebugFlag & DEBUG_DEBUG) { taosPrintLog("DND ", DEBUG_DEBUG, dDebugFlag, __VA_ARGS__); }}
 #define dTrace(...) { if (dDebugFlag & DEBUG_TRACE) { taosPrintLog("DND ", DEBUG_TRACE, dDebugFlag, __VA_ARGS__); }}
 
-void dmnDumpCfg();
-void dmnPrintVersion();
-void dmnGenerateGrant();
+void dndDumpCfg();
+void dndPrintVersion();
+void dndGenerateGrant();
 
-SDnodeObjCfg dmnGetObjCfg();
+SDnodeObjCfg dndGetObjCfg();
 
 #ifdef __cplusplus
 }
 #endif
 
-#endif /*_TD_DMN_INT_H_*/
+#endif /*_TD_DND_EXEC_H_*/
diff --git a/source/dnode/mgmt/exec/src/dndCfg.c b/source/dnode/mgmt/exec/src/dndCfg.c
index afb9ffbdd0..64cc48afe5 100644
--- a/source/dnode/mgmt/exec/src/dndCfg.c
+++ b/source/dnode/mgmt/exec/src/dndCfg.c
@@ -14,10 +14,9 @@
  */
 
 #define _DEFAULT_SOURCE
-#include "dmnInt.h"
-#include "tconfig.h"
+#include "dndExec.h"
 
-SDnodeObjCfg dmnGetObjCfg() {
+SDnodeObjCfg dndGetObjCfg() {
   SConfig *pCfg = taosGetCfg();
   SDnodeObjCfg objCfg = {0};
 
@@ -33,7 +32,7 @@ SDnodeObjCfg dmnGetObjCfg() {
   return objCfg;
 }
 
-void dmnDumpCfg() {
+void dndDumpCfg() {
   SConfig *pCfg = taosGetCfg();
   cfgDumpCfg(pCfg, 0, 1);
 }
\ No newline at end of file
diff --git a/source/dnode/mgmt/exec/src/dndMain.c b/source/dnode/mgmt/exec/src/dndMain.c
index 3c2460e607..2576c80ff5 100644
--- a/source/dnode/mgmt/exec/src/dndMain.c
+++ b/source/dnode/mgmt/exec/src/dndMain.c
@@ -14,7 +14,7 @@
  */
 
 #define _DEFAULT_SOURCE
-#include "dmnInt.h"
+#include "dndExec.h"
 
 static struct {
   bool    dumpConfig;
@@ -24,22 +24,22 @@ static struct {
   char    envFile[PATH_MAX];
   char    apolloUrl[PATH_MAX];
   SDnode *pDnode;
-} dmn = {0};
+} global = {0};
 
-static void dmnSigintHandle(int signum, void *info, void *ctx) {
+static void dndSigintHandle(int signum, void *info, void *ctx) {
   dInfo("singal:%d is received", signum);
-  dndeHandleEvent(dmn.pDnode, DND_EVENT_STOP);
+  dndeHandleEvent(global.pDnode, DND_EVENT_STOP);
 }
 
-static void dmnSetSignalHandle() {
-  taosSetSignal(SIGTERM, dmnSigintHandle);
-  taosSetSignal(SIGHUP, dmnSigintHandle);
-  taosSetSignal(SIGINT, dmnSigintHandle);
-  taosSetSignal(SIGABRT, dmnSigintHandle);
-  taosSetSignal(SIGBREAK, dmnSigintHandle);
+static void dndSetSignalHandle() {
+  taosSetSignal(SIGTERM, dndSigintHandle);
+  taosSetSignal(SIGHUP, dndSigintHandle);
+  taosSetSignal(SIGINT, dndSigintHandle);
+  taosSetSignal(SIGABRT, dndSigintHandle);
+  taosSetSignal(SIGBREAK, dndSigintHandle);
 }
 
-static int32_t dmnParseOption(int32_t argc, char const *argv[]) {
+static int32_t dndParseOption(int32_t argc, char const *argv[]) {
   for (int32_t i = 1; i < argc; ++i) {
     if (strcmp(argv[i], "-c") == 0) {
       if (i < argc - 1) {
@@ -53,11 +53,11 @@ static int32_t dmnParseOption(int32_t argc, char const *argv[]) {
         return -1;
       }
     } else if (strcmp(argv[i], "-C") == 0) {
-      dmn.dumpConfig = true;
+      global.dumpConfig = true;
     } else if (strcmp(argv[i], "-k") == 0) {
-      dmn.generateGrant = true;
+      global.generateGrant = true;
     } else if (strcmp(argv[i], "-V") == 0) {
-      dmn.printVersion = true;
+      global.printVersion = true;
     } else {
     }
   }
@@ -65,19 +65,20 @@ static int32_t dmnParseOption(int32_t argc, char const *argv[]) {
   return 0;
 }
 
-int32_t dmnRunDnode() {
+static int32_t dndRunDnode() {
   if (dndInit() != 0) {
     dInfo("failed to initialize dnode environment since %s", terrstr());
     return -1;
   }
 
-  SDnodeObjCfg objCfg = dmnGetObjCfg();
+  SDnodeObjCfg objCfg = dndGetObjCfg();
   SDnode      *pDnode = dndCreate(&objCfg);
   if (pDnode == NULL) {
     dError("failed to to create dnode object since %s", terrstr());
     return -1;
   } else {
-    dmn.pDnode = pDnode;
+    global.pDnode = pDnode;
+    dndSetSignalHandle();
   }
 
   dInfo("start the TDengine service");
@@ -97,36 +98,36 @@ int main(int argc, char const *argv[]) {
     return -1;
   }
 
-  if (dmnParseOption(argc, argv) != 0) {
+  if (dndParseOption(argc, argv) != 0) {
     return -1;
   }
 
-  if (dmn.generateGrant) {
-    dmnGenerateGrant();
+  if (global.generateGrant) {
+    dndGenerateGrant();
     return 0;
   }
 
-  if (dmn.printVersion) {
-    dmnPrintVersion();
+  if (global.printVersion) {
+    dndPrintVersion();
     return 0;
   }
 
-  if (taosCreateLog("taosdlog", 1, configDir, dmn.envFile, dmn.apolloUrl, NULL, 0) != 0) {
+  if (taosCreateLog("taosdlog", 1, configDir, global.envFile, global.apolloUrl, NULL, 0) != 0) {
     dError("failed to start TDengine since read log config error");
     return -1;
   }
 
-  if (taosInitCfg(configDir, dmn.envFile, dmn.apolloUrl, NULL, 0) != 0) {
+  if (taosInitCfg(configDir, global.envFile, global.apolloUrl, NULL, 0) != 0) {
     dError("failed to start TDengine since read config error");
     return -1;
   }
 
-  if (dmn.dumpConfig) {
-    dmnDumpCfg();
+  if (global.dumpConfig) {
+    dndDumpCfg();
     taosCleanupCfg();
     taosCloseLog();
     return 0;
   }
 
-  return dmnRunDnode();
+  return dndRunDnode();
 }
diff --git a/source/dnode/mgmt/exec/src/dndUtil.c b/source/dnode/mgmt/exec/src/dndUtil.c
index d58a5968c0..f0f613da17 100644
--- a/source/dnode/mgmt/exec/src/dndUtil.c
+++ b/source/dnode/mgmt/exec/src/dndUtil.c
@@ -14,15 +14,15 @@
  */
 
 #define _DEFAULT_SOURCE
-#include "dmnInt.h"
+#include "dndExec.h"
 
-void dmnGenerateGrant() {
+void dndGenerateGrant() {
 #if 0
   grantParseParameter();
 #endif
 }
 
-void dmnPrintVersion() {
+void dndPrintVersion() {
 #ifdef TD_ENTERPRISE
   char *releaseName = "enterprise";
 #else