diff --git a/source/dnode/mgmt/main/exe/dndMain.c b/source/dnode/mgmt/main/exe/dndMain.c
index 0d2ddbfbbc3f55268e4e3fa1d9263ec70ae3f03f..c6a109d62a547ccd6e17aee264ccd4eaf01ac6fd 100644
--- a/source/dnode/mgmt/main/exe/dndMain.c
+++ b/source/dnode/mgmt/main/exe/dndMain.c
@@ -30,7 +30,6 @@ static struct {
 } global = {0};
 
 static void dndStopDnode(int signum, void *info, void *ctx) {
-  dInfo("system signal:%d received", signum);
   SDnode *pDnode = atomic_val_compare_exchange_ptr(&global.pDnode, 0, global.pDnode);
   if (pDnode != NULL) {
     dndHandleEvent(pDnode, DND_EVENT_STOP);
@@ -41,8 +40,10 @@ static void dndSetSignalHandle() {
   taosSetSignal(SIGTERM, dndStopDnode);
   taosSetSignal(SIGHUP, dndStopDnode);
   taosSetSignal(SIGINT, dndStopDnode);
+  taosSetSignal(SIGTSTP, dndStopDnode);
   taosSetSignal(SIGABRT, dndStopDnode);
   taosSetSignal(SIGBREAK, dndStopDnode);
+  taosSetSignal(SIGQUIT, dndStopDnode);
 
   if (!tsMultiProcess) {
   } else if (global.ntype == DNODE || global.ntype == NODE_MAX) {
@@ -72,7 +73,7 @@ static int32_t dndParseArgs(int32_t argc, char const *argv[]) {
     } else if (strcmp(argv[i], "-n") == 0) {
       global.ntype = atoi(argv[++i]);
       if (global.ntype <= DNODE || global.ntype > NODE_MAX) {
-        printf("'-n' range is [1-5], default is 0\n");
+        printf("'-n' range is [1 - %d], default is 0\n", NODE_MAX - 1);
         return -1;
       }
     } else if (strcmp(argv[i], "-k") == 0) {
diff --git a/source/dnode/mgmt/main/src/dndExec.c b/source/dnode/mgmt/main/src/dndExec.c
index 0cc429c0d96eb12e3fb060772e1d31d67c7027dd..281bc752ca4f92c132e6d57c17a4998d4b02c388 100644
--- a/source/dnode/mgmt/main/src/dndExec.c
+++ b/source/dnode/mgmt/main/src/dndExec.c
@@ -180,6 +180,7 @@ static int32_t dndRunInSingleProcess(SDnode *pDnode) {
   while (1) {
     if (pDnode->event == DND_EVENT_STOP) {
       dInfo("dnode is about to stop");
+      dndSetStatus(pDnode, DND_STAT_STOPPED);
       break;
     }
     taosMsleep(100);
@@ -255,14 +256,16 @@ static int32_t dndRunInParentProcess(SDnode *pDnode) {
   while (1) {
     if (pDnode->event == DND_EVENT_STOP) {
       dInfo("dnode is about to stop");
+      dndSetStatus(pDnode, DND_STAT_STOPPED);
+
       for (ENodeType n = DNODE + 1; n < NODE_MAX; ++n) {
         SMgmtWrapper *pWrapper = &pDnode->wrappers[n];
         if (!pWrapper->required) continue;
         if (pDnode->ntype == NODE_MAX) continue;
 
         if (pWrapper->procId > 0 && taosProcExist(pWrapper->procId)) {
-          // dInfo("node:%s, send kill signal to the child process:%d", pWrapper->name, pWrapper->procId);
-          // taosKillProc(pWrapper->procId);
+          dInfo("node:%s, send kill signal to the child process:%d", pWrapper->name, pWrapper->procId);
+          taosKillProc(pWrapper->procId);
           dInfo("node:%s, wait for child process:%d to stop", pWrapper->name, pWrapper->procId);
           taosWaitProc(pWrapper->procId);
           dInfo("node:%s, child process:%d is stopped", pWrapper->name, pWrapper->procId);
@@ -332,10 +335,13 @@ static int32_t dndRunInChildProcess(SDnode *pDnode) {
   while (1) {
     if (pDnode->event == DND_EVENT_STOP) {
       dInfo("%s is about to stop", pWrapper->name);
+      dndSetStatus(pDnode, DND_STAT_STOPPED);
       break;
     }
     taosMsleep(100);
   }
+
+  return 0;
 }
 
 int32_t dndRun(SDnode *pDnode) {
diff --git a/source/dnode/mgmt/main/src/dndInt.c b/source/dnode/mgmt/main/src/dndInt.c
index 602ebc6b3cfcfa2177b511bd48b49ba68272ceca..6f6e21b983d0b41f4e8765b996a6ffd4dcf9f5bf 100644
--- a/source/dnode/mgmt/main/src/dndInt.c
+++ b/source/dnode/mgmt/main/src/dndInt.c
@@ -133,14 +133,6 @@ _OVER:
 void dndClose(SDnode *pDnode) {
   if (pDnode == NULL) return;
 
-  if (dndGetStatus(pDnode) == DND_STAT_STOPPED) {
-    dError("dnode is shutting down, data:%p", pDnode);
-    return;
-  }
-
-  dInfo("start to close dnode, data:%p", pDnode);
-  dndSetStatus(pDnode, DND_STAT_STOPPED);
-
   for (ENodeType n = 0; n < NODE_MAX; ++n) {
     SMgmtWrapper *pWrapper = &pDnode->wrappers[n];
     dndCloseNode(pWrapper);
@@ -151,7 +143,6 @@ void dndClose(SDnode *pDnode) {
 }
 
 void dndHandleEvent(SDnode *pDnode, EDndEvent event) {
-  dInfo("dnode receive %s event, data:%p", dndEventStr(event), pDnode);
   if (event == DND_EVENT_STOP) {
     pDnode->event = event;
   }
diff --git a/source/os/src/osSignal.c b/source/os/src/osSignal.c
index d4e6cb3318f788e1173c1f25192c59d731e76f37..1d7fa517e58c873a4fbfb1d66792a971945370a6 100644
--- a/source/os/src/osSignal.c
+++ b/source/os/src/osSignal.c
@@ -59,7 +59,7 @@ void taosSetSignal(int32_t signum, FSignalHandler sigfp) {
   struct sigaction act;
   memset(&act, 0, sizeof(act));
 #if 1
-  act.sa_flags = SA_SIGINFO;
+  act.sa_flags = SA_SIGINFO | SA_RESTART;
   act.sa_sigaction = (FLinuxSignalHandler)sigfp;
 #else
   act.sa_handler = sigfp;