diff --git a/include/os/os.h b/include/os/os.h
index 165563f634..e3808065dd 100644
--- a/include/os/os.h
+++ b/include/os/os.h
@@ -130,6 +130,12 @@ extern int64_t          tsRandErrScope;
 extern threadlocal bool tsEnableRandErr;
 
 #define TAOS_UNUSED(expr) (void)(expr)
+#define TAOS_SKIP_ERROR(expr) \
+  {                           \
+    int32_t _code = terrno;   \
+    (void)(expr);             \
+    terrno = _code;           \
+  }
 
 #ifdef __cplusplus
 }
diff --git a/include/os/osSysinfo.h b/include/os/osSysinfo.h
index 5a76be1d1e..a6d8a6502f 100644
--- a/include/os/osSysinfo.h
+++ b/include/os/osSysinfo.h
@@ -39,15 +39,17 @@ int64_t taosGetOsUptime();
 int32_t taosGetEmail(char *email, int32_t maxLen);
 int32_t taosGetOsReleaseName(char *releaseName, char* sName, char* ver, int32_t maxLen);
 int32_t taosGetCpuInfo(char *cpuModel, int32_t maxLen, float *numOfCores);
-void    taosGetCpuCores(float *numOfCores, bool physical);
-void    taosGetCpuUsage(double *cpu_system, double *cpu_engine);
+int32_t taosGetCpuCores(float *numOfCores, bool physical);
+int32_t taosGetCpuUsage(double *cpu_system, double *cpu_engine);
 int32_t taosGetCpuInstructions(char* sse42, char* avx, char* avx2, char* fma, char* avx512);
 int32_t taosGetTotalMemory(int64_t *totalKB);
 int32_t taosGetProcMemory(int64_t *usedKB);
 int32_t taosGetSysMemory(int64_t *usedKB);
 int32_t taosGetDiskSize(char *dataDir, SDiskSize *diskSize);
-void    taosGetProcIODelta(int64_t *rchars, int64_t *wchars, int64_t *read_bytes, int64_t *write_bytes);
-void    taosGetCardInfoDelta(int64_t *receive_bytes, int64_t *transmit_bytes);
+int32_t taosGetProcIODelta(int64_t *rchars, int64_t *wchars, int64_t *read_bytes, int64_t *write_bytes);
+void    taosSetDefaultProcIODelta(int64_t *rchars, int64_t *wchars, int64_t *read_bytes, int64_t *write_bytes);
+int32_t taosGetCardInfoDelta(int64_t *receive_bytes, int64_t *transmit_bytes);
+void    taosSetDefaultCardInfoDelta(int64_t *receive_bytes, int64_t *transmit_bytes);
 
 void    taosKillSystem();
 int32_t taosGetSystemUUID(char *uid, int32_t uidlen);
diff --git a/include/util/taoserror.h b/include/util/taoserror.h
index 4e909b0a1c..eb329192a2 100644
--- a/include/util/taoserror.h
+++ b/include/util/taoserror.h
@@ -156,6 +156,7 @@ int32_t  taosGetErrSize();
 #define TSDB_CODE_OUT_OF_BUFFER                 TAOS_DEF_ERROR_CODE(0, 0x0137)
 #define TSDB_CODE_INTERNAL_ERROR                TAOS_DEF_ERROR_CODE(0, 0x0138)
 #define TSDB_CODE_SOCKET_ERROR                  TAOS_DEF_ERROR_CODE(0, 0x0139)
+#define TSDB_CODE_UNSUPPORT_OS                  TAOS_DEF_ERROR_CODE(0, 0x013A)
 
 //client
 #define TSDB_CODE_TSC_INVALID_OPERATION         TAOS_DEF_ERROR_CODE(0, 0x0200)
diff --git a/source/dnode/mgmt/node_util/src/dmUtil.c b/source/dnode/mgmt/node_util/src/dmUtil.c
index 68f4c9d0ff..f73f041f4a 100644
--- a/source/dnode/mgmt/node_util/src/dmUtil.c
+++ b/source/dnode/mgmt/node_util/src/dmUtil.c
@@ -55,14 +55,36 @@ void *dmSetMgmtHandle(SArray *pArray, tmsg_t msgType, void *nodeMsgFp, bool need
 }
 
 void dmGetMonitorSystemInfo(SMonSysInfo *pInfo) {
-  taosGetCpuUsage(&pInfo->cpu_system, &pInfo->cpu_engine);
-  taosGetCpuCores(&pInfo->cpu_cores, false);
-  (void)taosGetProcMemory(&pInfo->mem_engine);
-  (void)taosGetSysMemory(&pInfo->mem_system);
+  int32_t code = 0;
+  code = taosGetCpuUsage(&pInfo->cpu_system, &pInfo->cpu_engine);
+  if (code != 0) {
+    dError("failed to get cpu usage since %s", tstrerror(code));
+  }
+  code = taosGetCpuCores(&pInfo->cpu_cores, false);
+  if (code != 0) {
+    dError("failed to get cpu cores since %s", tstrerror(code));
+  }
+  code = taosGetProcMemory(&pInfo->mem_engine);
+  if (code != 0) {
+    dError("failed to get proc memory since %s", tstrerror(code));
+  }
+  code = taosGetSysMemory(&pInfo->mem_system);
+  if (code != 0) {
+    dError("failed to get sys memory since %s", tstrerror(code));
+  }
   pInfo->mem_total = tsTotalMemoryKB;
   pInfo->disk_engine = 0;
   pInfo->disk_used = tsDataSpace.size.used;
   pInfo->disk_total = tsDataSpace.size.total;
-  taosGetCardInfoDelta(&pInfo->net_in, &pInfo->net_out);
-  taosGetProcIODelta(&pInfo->io_read, &pInfo->io_write, &pInfo->io_read_disk, &pInfo->io_write_disk);
+  code = taosGetCardInfoDelta(&pInfo->net_in, &pInfo->net_out);
+  if (code != 0) {
+    dError("failed to get card info since %s", tstrerror(code));
+    taosSetDefaultCardInfoDelta(&pInfo->net_in, &pInfo->net_out);
+  }
+  code = taosGetProcIODelta(&pInfo->io_read, &pInfo->io_write, &pInfo->io_read_disk, &pInfo->io_write_disk);
+  if (code != 0) {
+    dError("failed to get proc io delta since %s", tstrerror(code));
+    taosSetDefaultProcIODelta(&pInfo->io_read, &pInfo->io_write, &pInfo->io_read_disk, &pInfo->io_write_disk);
+  }
+  return;
 }
diff --git a/source/os/src/osDir.c b/source/os/src/osDir.c
index 45fdd79837..e06c1a6aac 100644
--- a/source/os/src/osDir.c
+++ b/source/os/src/osDir.c
@@ -323,8 +323,8 @@ void taosRemoveOldFiles(const char *dirname, int32_t keepDays) {
     }
   }
 
-  (void)taosCloseDir(&pDir);
-  (void)rmdir(dirname);
+  TAOS_UNUSED(taosCloseDir(&pDir));
+  TAOS_UNUSED(rmdir(dirname));
 }
 
 int32_t taosExpandDir(const char *dirname, char *outname, int32_t maxlen) {
diff --git a/source/os/src/osFile.c b/source/os/src/osFile.c
index 164626299b..0e5b6b71a1 100644
--- a/source/os/src/osFile.c
+++ b/source/os/src/osFile.c
@@ -190,10 +190,10 @@ int64_t taosCopyFile(const char *from, const char *to) {
 
 _err:
 
-  if (pFileFrom != NULL) TAOS_UNUSED(taosCloseFile(&pFileFrom));
-  if (pFileTo != NULL) TAOS_UNUSED(taosCloseFile(&pFileTo));
+  if (pFileFrom != NULL) TAOS_SKIP_ERROR(taosCloseFile(&pFileFrom));
+  if (pFileTo != NULL) TAOS_SKIP_ERROR(taosCloseFile(&pFileTo));
   /* coverity[+retval] */
-  TAOS_UNUSED(taosRemoveFile(to));
+  TAOS_SKIP_ERROR(taosRemoveFile(to));
 
   terrno = code;
   return -1;
@@ -1485,14 +1485,14 @@ int32_t taosCompressFile(char *srcFileName, char *destFileName) {
 cmp_end:
 
   if (fd >= 0) {
-    (void)close(fd);
+    TAOS_SKIP_ERROR(close(fd));
   }
   if (pSrcFile) {
-    TAOS_UNUSED(taosCloseFile(&pSrcFile));
+    TAOS_SKIP_ERROR(taosCloseFile(&pSrcFile));
   }
 
   if (dstFp) {
-    TAOS_UNUSED(gzclose(dstFp));
+    TAOS_SKIP_ERROR(gzclose(dstFp));
   }
 
   taosMemoryFree(data);
diff --git a/source/os/src/osLocale.c b/source/os/src/osLocale.c
index 2f835a7a27..d7fbb05a5d 100644
--- a/source/os/src/osLocale.c
+++ b/source/os/src/osLocale.c
@@ -135,9 +135,14 @@ void taosGetSystemLocale(char *outLocale, char *outCharset) {
     str++;
 
     char *revisedCharset = taosCharsetReplace(str);
-    tstrncpy(outCharset, revisedCharset, TD_CHARSET_LEN);
 
-    taosMemoryFree(revisedCharset);
+    if (NULL == revisedCharset) {
+      (void)strcpy(outCharset, "UTF-8");
+    } else {
+      tstrncpy(outCharset, revisedCharset, TD_CHARSET_LEN);
+
+      taosMemoryFree(revisedCharset);
+    }
     // printf("charset not configured, set to system default:%s", outCharset);
   } else {
     strcpy(outCharset, "UTF-8");
diff --git a/source/os/src/osSysinfo.c b/source/os/src/osSysinfo.c
index 93fa9fa222..f9c4f081ff 100644
--- a/source/os/src/osSysinfo.c
+++ b/source/os/src/osSysinfo.c
@@ -179,10 +179,8 @@ static int32_t taosGetSysCpuInfo(SysCpuInfo *cpuInfo) {
   char    line[1024];
   ssize_t bytes = taosGetsFile(pFile, sizeof(line), line);
   if (bytes < 0) {
-    code = terrno;
-    (void)taosCloseFile(&pFile);
-    terrno = code;
-    return code;
+    TAOS_SKIP_ERROR(taosCloseFile(&pFile));
+    return terrno;
   }
 
   char cpu[10] = {0};
@@ -230,9 +228,7 @@ static int32_t taosGetProcCpuInfo(ProcCpuInfo *cpuInfo) {
   char    line[1024] = {0};
   ssize_t bytes = taosGetsFile(pFile, sizeof(line), line);
   if (bytes < 0) {
-    code = terrno;
-    (void)taosCloseFile(&pFile);
-    terrno = code;
+    TAOS_SKIP_ERROR(taosCloseFile(&pFile));
     return code;
   }
 
@@ -250,7 +246,7 @@ static int32_t taosGetProcCpuInfo(ProcCpuInfo *cpuInfo) {
     }
   }
 
-  (void)taosCloseFile(&pFile);
+  TAOS_SKIP_ERROR(taosCloseFile(&pFile));
 #endif
 
   return 0;
@@ -427,7 +423,7 @@ int32_t taosGetOsReleaseName(char *releaseName, char* sName, char* ver, int32_t
     if (++cnt >= 3) break;
   }
 
-  (void)taosCloseFile(&pFile);
+  TAOS_SKIP_ERROR(taosCloseFile(&pFile));
   return code;
 #endif
 }
@@ -497,13 +493,13 @@ int32_t taosGetCpuInfo(char *cpuModel, int32_t maxLen, float *numOfCores) {
     if (strncmp(line, "processor", 9) == 0) coreCount += 1;
   }
 
-  (void)taosCloseFile(&pFile);
+  TAOS_SKIP_ERROR(taosCloseFile(&pFile));
 
   if (code != 0 && (done & 1) == 0) {
     TdFilePtr pFile1 = taosOpenFile("/proc/device-tree/model", TD_FILE_READ | TD_FILE_STREAM);
     if (pFile1 != NULL) {
       ssize_t bytes = taosGetsFile(pFile1, maxLen, cpuModel);
-      (void)taosCloseFile(&pFile);
+      TAOS_SKIP_ERROR(taosCloseFile(&pFile));
       if (bytes > 0) {
         code = 0;
         done |= 1;
@@ -535,9 +531,9 @@ int32_t taosGetCpuInfo(char *cpuModel, int32_t maxLen, float *numOfCores) {
 // Returns the container's CPU quota if successful, otherwise returns the physical CPU cores
 static int32_t taosCntrGetCpuCores(float *numOfCores) {
 #ifdef WINDOWS
-  return -1;
+  return TSDB_CODE_UNSUPPORT_OS;
 #elif defined(_TD_DARWIN_64)
-  return -1;
+  return TSDB_CODE_UNSUPPORT_OS;
 #else
   TdFilePtr pFile = NULL;
   if (!(pFile = taosOpenFile(tsCpuQuotaFile, TD_FILE_READ | TD_FILE_STREAM))) {
@@ -545,11 +541,11 @@ static int32_t taosCntrGetCpuCores(float *numOfCores) {
   }
   char qline[32] = {0};
   if (taosGetsFile(pFile, sizeof(qline), qline) <= 0) {
-    (void)taosCloseFile(&pFile);
+    TAOS_SKIP_ERROR(taosCloseFile(&pFile));
     goto _sys;
   }
   
-  (void)taosCloseFile(&pFile);
+  TAOS_SKIP_ERROR(taosCloseFile(&pFile));
   float quota = taosStr2Float(qline, NULL);
   if (quota < 0) {
     goto _sys;
@@ -561,11 +557,11 @@ static int32_t taosCntrGetCpuCores(float *numOfCores) {
   
   char pline[32] = {0};
   if (taosGetsFile(pFile, sizeof(pline), pline) <= 0) {
-    (void)taosCloseFile(&pFile);
+    TAOS_SKIP_ERROR(taosCloseFile(&pFile));
     goto _sys;
   }
   
-  (void)taosCloseFile(&pFile);
+  TAOS_SKIP_ERROR(taosCloseFile(&pFile));
 
   float period = taosStr2Float(pline, NULL);
   float quotaCores = quota / period;
@@ -575,10 +571,16 @@ static int32_t taosCntrGetCpuCores(float *numOfCores) {
   } else {
     *numOfCores = sysCores;
   }
+  if(*numOfCores <= 0) {
+    return TAOS_SYSTEM_ERROR(errno);
+  }
   goto _end;
   
 _sys:
   *numOfCores = sysconf(_SC_NPROCESSORS_ONLN);
+  if(*numOfCores <= 0) {
+    return TAOS_SYSTEM_ERROR(errno);
+  }
   
 _end:
   return 0;
@@ -586,26 +588,35 @@ _end:
 #endif
 }
 
-void taosGetCpuCores(float *numOfCores, bool physical) {
+int32_t taosGetCpuCores(float *numOfCores, bool physical) {
 #ifdef WINDOWS
   SYSTEM_INFO info;
   GetSystemInfo(&info);
   *numOfCores = info.dwNumberOfProcessors;
-  return;
+  return  0;
 #elif defined(_TD_DARWIN_64)
   *numOfCores = sysconf(_SC_NPROCESSORS_ONLN);
+  if(*numOfCores <= 0) {
+    return TAOS_SYSTEM_ERROR(errno);
+  }
   return;
 #else
   if (physical) {
     *numOfCores = sysconf(_SC_NPROCESSORS_ONLN);
+    if(*numOfCores <= 0) {
+      return TAOS_SYSTEM_ERROR(errno);
+    }
   } else {
-    (void)taosCntrGetCpuCores(numOfCores);
+    int code= taosCntrGetCpuCores(numOfCores);
+    if(code != 0) {
+      return code;
+    }
   }
-  return;
+  return 0;
 #endif
 }
 
-void taosGetCpuUsage(double *cpu_system, double *cpu_engine) {
+int32_t taosGetCpuUsage(double *cpu_system, double *cpu_engine) {
   static int64_t lastSysUsed = -1;
   static int64_t lastSysTotal = -1;
   static int64_t lastProcTotal = -1;
@@ -639,6 +650,7 @@ void taosGetCpuUsage(double *cpu_system, double *cpu_engine) {
     lastSysTotal = curSysTotal;
     lastProcTotal = curProcTotal;
   }
+  return 0;
 }
 
 #define __cpuid_fix(level, a, b, c, d) \
@@ -860,7 +872,7 @@ int32_t taosGetProcIO(int64_t *rchars, int64_t *wchars, int64_t *read_bytes, int
     if (readIndex >= 4) break;
   }
 
-  (void)taosCloseFile(&pFile);
+  TAOS_SKIP_ERROR(taosCloseFile(&pFile));
 
   if (readIndex < 4) {
     return -1;
@@ -870,7 +882,7 @@ int32_t taosGetProcIO(int64_t *rchars, int64_t *wchars, int64_t *read_bytes, int
 #endif
 }
 
-void taosGetProcIODelta(int64_t *rchars, int64_t *wchars, int64_t *read_bytes, int64_t *write_bytes) {
+int32_t taosGetProcIODelta(int64_t *rchars, int64_t *wchars, int64_t *read_bytes, int64_t *write_bytes) {
   static int64_t last_rchars = -1;
   static int64_t last_wchars = -1;
   static int64_t last_read_bytes = -1;
@@ -879,7 +891,8 @@ void taosGetProcIODelta(int64_t *rchars, int64_t *wchars, int64_t *read_bytes, i
   static int64_t cur_wchars = 0;
   static int64_t cur_read_bytes = 0;
   static int64_t cur_write_bytes = 0;
-  if (taosGetProcIO(&cur_rchars, &cur_wchars, &cur_read_bytes, &cur_write_bytes) == 0) {
+  int32_t code = taosGetProcIO(&cur_rchars, &cur_wchars, &cur_read_bytes, &cur_write_bytes);
+  if (code == 0) {
     if(last_rchars >=0 && last_wchars >=0 && last_read_bytes >=0 && last_write_bytes >= 0){
       *rchars = cur_rchars - last_rchars;
       *wchars = cur_wchars - last_wchars;
@@ -897,11 +910,15 @@ void taosGetProcIODelta(int64_t *rchars, int64_t *wchars, int64_t *read_bytes, i
     last_read_bytes = cur_read_bytes;
     last_write_bytes = cur_write_bytes;
   } else {
-    *rchars = 0;
-    *wchars = 0;
-    *read_bytes = 0;
-    *write_bytes = 0;
+    return code;
   }
+  return 0;
+}
+void taosSetDefaultProcIODelta(int64_t *rchars, int64_t *wchars, int64_t *read_bytes, int64_t *write_bytes) {
+  *rchars = 0;
+  *wchars = 0;
+  *read_bytes = 0;
+  *write_bytes = 0;
 }
 
 int32_t taosGetCardInfo(int64_t *receive_bytes, int64_t *transmit_bytes) {
@@ -953,18 +970,19 @@ int32_t taosGetCardInfo(int64_t *receive_bytes, int64_t *transmit_bytes) {
     *transmit_bytes += o_tbytes;
   }
 
-  (void)taosCloseFile(&pFile);
+  TAOS_SKIP_ERROR(taosCloseFile(&pFile));
 
   return 0;
 #endif
 }
 
-void taosGetCardInfoDelta(int64_t *receive_bytes, int64_t *transmit_bytes) {
+int32_t taosGetCardInfoDelta(int64_t *receive_bytes, int64_t *transmit_bytes) {
   static int64_t last_receive_bytes = -1;
   static int64_t last_transmit_bytes = -1;
   int64_t cur_receive_bytes = 0;
   int64_t cur_transmit_bytes = 0;
-  if (taosGetCardInfo(&cur_receive_bytes, &cur_transmit_bytes) == 0) {
+  int32_t code = taosGetCardInfo(&cur_receive_bytes, &cur_transmit_bytes);
+  if (code == 0) {
     if(last_receive_bytes >= 0 && last_transmit_bytes >= 0){
       *receive_bytes = cur_receive_bytes - last_receive_bytes;
       *transmit_bytes = cur_transmit_bytes - last_transmit_bytes;
@@ -977,9 +995,13 @@ void taosGetCardInfoDelta(int64_t *receive_bytes, int64_t *transmit_bytes) {
     last_receive_bytes = cur_receive_bytes;
     last_transmit_bytes = cur_transmit_bytes;
   } else {
-    *receive_bytes = 0;
-    *transmit_bytes = 0;
+    return code;
   }
+  return 0;
+}
+void taosSetDefaultCardInfoDelta(int64_t *receive_bytes, int64_t *transmit_bytes) {
+  *receive_bytes = 0;
+  *transmit_bytes = 0;
 }
 
 void taosKillSystem() {