diff --git a/include/util/tconfig.h b/include/util/tconfig.h
index 98e0df9655..312a10e2d6 100644
--- a/include/util/tconfig.h
+++ b/include/util/tconfig.h
@@ -118,6 +118,7 @@ void         cfgCleanup(SConfig *pCfg);
 int32_t      cfgGetSize(SConfig *pCfg);
 SConfigItem *cfgGetItem(SConfig *pCfg, const char *pName);
 int32_t      cfgSetItem(SConfig *pCfg, const char *name, const char *value, ECfgSrcType stype, bool lock);
+int32_t      cfgUpdateItem(SConfigItem *pItem, SConfigItem *newItem);
 int32_t      cfgCheckRangeForDynUpdate(SConfig *pCfg, const char *name, const char *pVal, bool isServer);
 
 int32_t      cfgCreateIter(SConfig *pConf, SConfigIter **ppIter);
diff --git a/source/dnode/mgmt/mgmt_mnode/src/mmHandle.c b/source/dnode/mgmt/mgmt_mnode/src/mmHandle.c
index 7b01609c29..8e595f76c9 100644
--- a/source/dnode/mgmt/mgmt_mnode/src/mmHandle.c
+++ b/source/dnode/mgmt/mgmt_mnode/src/mmHandle.c
@@ -200,7 +200,7 @@ SArray *mmGetMsgHandles() {
   if (dmSetMgmtHandle(pArray, TDMT_MND_KILL_CONN, mmPutMsgToWriteQueue, 0) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_MND_HEARTBEAT, mmPutMsgToReadQueue, 0) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_MND_STATUS, mmPutMsgToReadQueue, 0) == NULL) goto _OVER;
-  if (dmSetMgmtHandle(pArray, TDMT_MND_CONFIG, mmPutMsgToReadQueue, 0) == NULL) goto _OVER;
+  if (dmSetMgmtHandle(pArray, TDMT_MND_CONFIG, mmPutMsgToWriteQueue, 0) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_MND_NOTIFY, mmPutMsgToReadQueue, 0) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_MND_SYSTABLE_RETRIEVE, mmPutMsgToReadQueue, 0) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_MND_AUTH, mmPutMsgToReadQueue, 0) == NULL) goto _OVER;
diff --git a/source/dnode/mnode/impl/inc/mndConfig.h b/source/dnode/mnode/impl/inc/mndConfig.h
new file mode 100644
index 0000000000..22a115b30b
--- /dev/null
+++ b/source/dnode/mnode/impl/inc/mndConfig.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3
+ * or later ("AGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _TD_MND_CONFIG_H_
+#define _TD_MND_CONFIG_H_
+
+#include "mndInt.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+int32_t        mndInitConfig(SMnode *pMnode);
+SSdbRaw       *mnCfgActionEncode(SConfigItem *pCfg);
+SSdbRow       *mndCfgActionDecode(SSdbRaw *pRaw);
+static int32_t mndCfgActionInsert(SSdb *pSdb, SConfigItem *item);
+static int32_t mndCfgActionDelete(SSdb *pSdb, SConfigItem *item);
+static int32_t mndCfgActionUpdate(SSdb *pSdb, SConfigItem *oldItem, SConfigItem *newItem);
+
+static int32_t mndProcessConfigReq(SRpcMsg *pReq);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /*_TD_MND_ARBGROUP_H_*/
diff --git a/source/dnode/mnode/impl/inc/mndDef.h b/source/dnode/mnode/impl/inc/mndDef.h
index d2d9b2e8eb..c2ee3944e5 100644
--- a/source/dnode/mnode/impl/inc/mndDef.h
+++ b/source/dnode/mnode/impl/inc/mndDef.h
@@ -106,8 +106,8 @@ typedef enum {
   TRN_CONFLICT_GLOBAL = 1,
   TRN_CONFLICT_DB = 2,
   TRN_CONFLICT_DB_INSIDE = 3,
-//  TRN_CONFLICT_TOPIC = 4,
-//  TRN_CONFLICT_TOPIC_INSIDE = 5,
+  //  TRN_CONFLICT_TOPIC = 4,
+  //  TRN_CONFLICT_TOPIC_INSIDE = 5,
   TRN_CONFLICT_ARBGROUP = 6,
   TRN_CONFLICT_TSMA = 7,
 } ETrnConflct;
@@ -316,6 +316,7 @@ typedef struct {
   TdThreadMutex mutex;
 } SArbGroup;
 
+
 typedef struct {
   int32_t maxUsers;
   int32_t maxDbs;
@@ -649,12 +650,12 @@ typedef struct {
   int32_t maxPollIntervalMs;
 } SMqConsumerObj;
 
-int32_t         tNewSMqConsumerObj(int64_t consumerId, char *cgroup, int8_t updateType,
-                           char *topic, SCMSubscribeReq *subscribe, SMqConsumerObj** ppConsumer);
-void            tClearSMqConsumerObj(SMqConsumerObj* pConsumer);
-void            tDeleteSMqConsumerObj(SMqConsumerObj* pConsumer);
-int32_t         tEncodeSMqConsumerObj(void** buf, const SMqConsumerObj* pConsumer);
-void*           tDecodeSMqConsumerObj(const void* buf, SMqConsumerObj* pConsumer, int8_t sver);
+int32_t tNewSMqConsumerObj(int64_t consumerId, char* cgroup, int8_t updateType, char* topic, SCMSubscribeReq* subscribe,
+                           SMqConsumerObj** ppConsumer);
+void    tClearSMqConsumerObj(SMqConsumerObj* pConsumer);
+void    tDeleteSMqConsumerObj(SMqConsumerObj* pConsumer);
+int32_t tEncodeSMqConsumerObj(void** buf, const SMqConsumerObj* pConsumer);
+void*   tDecodeSMqConsumerObj(const void* buf, SMqConsumerObj* pConsumer, int8_t sver);
 
 typedef struct {
   int32_t vgId;
@@ -693,11 +694,11 @@ typedef struct {
   char*     qmsg;  // SubPlanToString
 } SMqSubscribeObj;
 
-int32_t          tNewSubscribeObj(const char *key, SMqSubscribeObj **ppSub);
-int32_t          tCloneSubscribeObj(const SMqSubscribeObj* pSub, SMqSubscribeObj **ppSub);
-void             tDeleteSubscribeObj(SMqSubscribeObj* pSub);
-int32_t          tEncodeSubscribeObj(void** buf, const SMqSubscribeObj* pSub);
-void*            tDecodeSubscribeObj(const void* buf, SMqSubscribeObj* pSub, int8_t sver);
+int32_t tNewSubscribeObj(const char* key, SMqSubscribeObj** ppSub);
+int32_t tCloneSubscribeObj(const SMqSubscribeObj* pSub, SMqSubscribeObj** ppSub);
+void    tDeleteSubscribeObj(SMqSubscribeObj* pSub);
+int32_t tEncodeSubscribeObj(void** buf, const SMqSubscribeObj* pSub);
+void*   tDecodeSubscribeObj(const void* buf, SMqSubscribeObj* pSub, int8_t sver);
 
 // typedef struct {
 //   int32_t epoch;
diff --git a/source/dnode/mnode/impl/src/mndConfig.c b/source/dnode/mnode/impl/src/mndConfig.c
new file mode 100644
index 0000000000..59fdc6260a
--- /dev/null
+++ b/source/dnode/mnode/impl/src/mndConfig.c
@@ -0,0 +1,305 @@
+/*
+ * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3
+ * or later ("AGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#define _DEFAULT_SOURCE
+#include "mndConfig.h"
+#include "mndDnode.h"
+#include "mndTrans.h"
+
+#define CFG_VER_NUMBER   1
+#define CFG_RESERVE_SIZE 63
+
+static int32_t mndProcessConfigReq(SRpcMsg *pReq);
+static int32_t mndInitWriteCfg(SMnode *pMnode);
+static int32_t mndInitReadCfg(SMnode *pMnode);
+
+int32_t mndSetCreateConfigCommitLogs(STrans *pTrans, SConfigItem *item);
+
+int32_t mndInitConfig(SMnode *pMnode) {
+  int32_t   code = 0;
+  SSdbTable table = {
+      .sdbType = SDB_CFG,
+      .keyType = SDB_KEY_INT32,
+      .encodeFp = (SdbEncodeFp)mnCfgActionEncode,
+      .decodeFp = (SdbDecodeFp)mndCfgActionDecode,
+      .insertFp = (SdbInsertFp)mndCfgActionInsert,
+      .updateFp = (SdbUpdateFp)mndCfgActionUpdate,
+      .deleteFp = (SdbDeleteFp)mndCfgActionDelete,
+  };
+
+  if (pMnode->deploy) {
+    mndInitWriteCfg(pMnode);
+  } else {
+    mndInitReadCfg(pMnode);
+  }
+
+  mndSetMsgHandle(pMnode, TDMT_MND_CONFIG, mndProcessConfigReq);
+
+  return sdbSetTable(pMnode->pSdb, table);
+}
+
+SSdbRaw *mnCfgActionEncode(SConfigItem *pCfg) {
+  int32_t code = 0;
+  int32_t lino = 0;
+  terrno = TSDB_CODE_OUT_OF_MEMORY;
+  char buf[30];
+
+  int32_t  size = sizeof(SConfigItem) + CFG_RESERVE_SIZE;
+  SSdbRaw *pRaw = sdbAllocRaw(SDB_CFG, CFG_VER_NUMBER, size);
+  if (pRaw == NULL) goto _OVER;
+
+  int32_t      dataPos = 0;
+  SConfigItem *item = NULL;
+  SDB_SET_INT32(pRaw, dataPos, strlen(item->name), _OVER)
+  SDB_SET_BINARY(pRaw, dataPos, item->name, strlen(item->name), _OVER)
+  SDB_SET_INT32(pRaw, dataPos, item->dtype, _OVER)
+  switch (item->dtype) {
+    case CFG_DTYPE_NONE:
+      break;
+    case CFG_DTYPE_BOOL:
+      SDB_SET_BOOL(pRaw, dataPos, item->bval, _OVER)
+      break;
+    case CFG_DTYPE_INT32:
+      SDB_SET_INT32(pRaw, dataPos, item->i32, _OVER);
+      break;
+    case CFG_DTYPE_INT64:
+      SDB_SET_INT64(pRaw, dataPos, item->i64, _OVER);
+      break;
+    case CFG_DTYPE_FLOAT:
+    case CFG_DTYPE_DOUBLE:
+      (void)sprintf(buf, "%f", item->fval);
+      SDB_SET_INT32(pRaw, dataPos, strlen(buf), _OVER)
+      SDB_SET_BINARY(pRaw, dataPos, buf, strlen(buf), _OVER)
+      break;
+    case CFG_DTYPE_STRING:
+    case CFG_DTYPE_DIR:
+    case CFG_DTYPE_LOCALE:
+    case CFG_DTYPE_CHARSET:
+    case CFG_DTYPE_TIMEZONE:
+      SDB_SET_INT32(pRaw, dataPos, strlen(item->str), _OVER)
+      SDB_SET_BINARY(pRaw, dataPos, item->str, strlen(item->str), _OVER)
+      break;
+  }
+
+  terrno = 0;
+
+_OVER:
+  if (terrno != 0) {
+    mError("cfg failed to encode to raw:%p since %s", pRaw, terrstr());
+    sdbFreeRaw(pRaw);
+    return NULL;
+  }
+  mTrace("cfg encode to raw:%p, row:%p", pRaw, pCfg);
+  return pRaw;
+}
+
+SSdbRow *mndCfgActionDecode(SSdbRaw *pRaw) {
+  int32_t code = 0;
+  int32_t lino = 0;
+  int32_t len = -1;
+  terrno = TSDB_CODE_OUT_OF_MEMORY;
+  SSdbRow     *pRow = NULL;
+  SConfigItem *item = NULL;
+
+  int8_t sver = 0;
+  if (sdbGetRawSoftVer(pRaw, &sver) != 0) goto _OVER;
+
+  if (sver != CFG_VER_NUMBER) {
+    terrno = TSDB_CODE_SDB_INVALID_DATA_VER;
+    goto _OVER;
+  }
+
+  pRow = sdbAllocRow(sizeof(SSdbRaw));
+  if (pRow == NULL) goto _OVER;
+
+  item = sdbGetRowObj(pRow);
+  if (item == NULL) goto _OVER;
+  int32_t dataPos = 0;
+  SDB_GET_INT32(pRaw, dataPos, &len, _OVER)
+  SDB_GET_BINARY(pRaw, dataPos, item->name, len, _OVER)
+  SDB_GET_INT32(pRaw, dataPos, (int32_t *)&item->dtype, _OVER)
+  switch (item->dtype) {
+    case CFG_DTYPE_NONE:
+      break;
+    case CFG_DTYPE_BOOL:
+      SDB_GET_BOOL(pRaw, dataPos, &item->bval, _OVER)
+      break;
+    case CFG_DTYPE_INT32:
+      SDB_GET_INT32(pRaw, dataPos, &item->i32, _OVER);
+      break;
+    case CFG_DTYPE_INT64:
+      SDB_GET_INT64(pRaw, dataPos, &item->i64, _OVER);
+      break;
+    case CFG_DTYPE_FLOAT:
+    case CFG_DTYPE_DOUBLE:
+      SDB_GET_INT32(pRaw, dataPos, &len, _OVER)
+      char *buf = taosMemoryMalloc(len + 1);
+      SDB_GET_BINARY(pRaw, dataPos, buf, len, _OVER)
+      break;
+    case CFG_DTYPE_STRING:
+    case CFG_DTYPE_DIR:
+    case CFG_DTYPE_LOCALE:
+    case CFG_DTYPE_CHARSET:
+    case CFG_DTYPE_TIMEZONE:
+      SDB_GET_INT32(pRaw, dataPos, &len, _OVER)
+      SDB_GET_BINARY(pRaw, dataPos, item->str, len, _OVER)
+      break;
+  }
+
+_OVER:
+  if (terrno != 0) {
+    mError("cfg failed to decode from raw:%p since %s", pRaw, terrstr());
+    taosMemoryFreeClear(pRow);
+    return NULL;
+  }
+
+  mTrace("cfg decode from raw:%p, row:%p", pRaw, item);
+  return pRow;
+}
+
+static int32_t mndCfgActionInsert(SSdb *pSdb, SConfigItem *item) {
+  mTrace("cfg:%s, perform insert action, row:%p", item->name, item);
+  return 0;
+}
+
+static int32_t mndCfgActionDelete(SSdb *pSdb, SConfigItem *item) {
+  mTrace("cfg:%s, perform delete action, row:%p", item->name, item);
+  return 0;
+}
+
+static int32_t mndCfgActionUpdate(SSdb *pSdb, SConfigItem *pOld, SConfigItem *pNew) {
+  mTrace("cfg:%s, perform update action, old row:%p new row:%p", pOld->name, pOld, pNew);
+  return 0;
+}
+
+static int32_t mndProcessConfigReq(SRpcMsg *pReq) {
+  SMnode    *pMnode = pReq->info.node;
+  SConfigReq configReq = {0};
+  SDnodeObj *pDnode = NULL;
+  int32_t    code = -1;
+
+  tDeserializeSConfigReq(pReq->pCont, pReq->contLen, &configReq);
+  SArray    *diffArray = taosArrayInit(16, sizeof(SConfigItem));
+  SConfigRsp configRsp = {0};
+  configRsp.forceReadConfig = configReq.forceReadConfig;
+  configRsp.cver = tsmmConfigVersion;
+  if (configRsp.forceReadConfig) {
+    // compare config array from configReq with current config array
+    if (compareSConfigItemArrays(getGlobalCfg(tsCfg), configReq.array, diffArray)) {
+      configRsp.array = diffArray;
+    } else {
+      configRsp.isConifgVerified = 1;
+      taosArrayDestroy(diffArray);
+    }
+  } else {
+    configRsp.array = getGlobalCfg(tsCfg);
+    if (configReq.cver == tsmmConfigVersion) {
+      configRsp.isVersionVerified = 1;
+    } else {
+      configRsp.array = getGlobalCfg(tsCfg);
+    }
+  }
+
+  int32_t contLen = tSerializeSConfigRsp(NULL, 0, &configRsp);
+  void   *pHead = rpcMallocCont(contLen);
+  contLen = tSerializeSConfigRsp(pHead, contLen, &configRsp);
+  taosArrayDestroy(diffArray);
+  if (contLen < 0) {
+    code = contLen;
+    goto _OVER;
+  }
+  pReq->info.rspLen = contLen;
+  pReq->info.rsp = pHead;
+_OVER:
+
+  mndReleaseDnode(pMnode, pDnode);
+  return TSDB_CODE_SUCCESS;
+}
+
+int32_t mndInitWriteCfg(SMnode *pMnode) {
+  int    code = -1;
+  size_t sz = 0;
+
+  SConfigItem item = {0};
+  STrans     *pTrans = mndTransCreate(pMnode, TRN_POLICY_RETRY, TRN_CONFLICT_NOTHING, NULL, "init-write-config");
+  if (pTrans == NULL) {
+    mError("failed to init write cfg in create trans, since %s", terrstr());
+    goto _OVER;
+  }
+
+  // encode mnd config version
+  item = (SConfigItem){.name = "tsmmConfigVersion", .dtype = CFG_DTYPE_INT32, .i32 = tsmmConfigVersion};
+  if ((code = mndSetCreateConfigCommitLogs(pTrans, &item)) != 0) {
+    mError("failed to init mnd config version, since %s", terrstr());
+  }
+  sz = taosArrayGetSize(getGlobalCfg(tsCfg));
+
+  for (int i = 0; i < sz; ++i) {
+    SConfigItem *item = taosArrayGet(getGlobalCfg(tsCfg), i);
+    if ((code = mndSetCreateConfigCommitLogs(pTrans, item)) != 0) {
+      mError("failed to init mnd config:%s, since %s", item->name, terrstr());
+    }
+  }
+  if ((code = mndTransCheckConflict(pMnode, pTrans)) != 0) goto _OVER;
+  if ((code = mndTransPrepare(pMnode, pTrans)) != 0) goto _OVER;
+
+_OVER:
+  mndTransDrop(pTrans);
+  return TSDB_CODE_SUCCESS;
+}
+
+int32_t mndInitReadCfg(SMnode *pMnode) {
+  int32_t code = 0;
+  int32_t sz = -1;
+  STrans *pTrans = mndTransCreate(pMnode, TRN_POLICY_ROLLBACK, TRN_CONFLICT_NOTHING, NULL, "init-read-config");
+  if (pTrans == NULL) {
+    mError("failed to init read cfg in create trans, since %s", terrstr());
+    goto _OVER;
+  }
+  SConfigItem *item = sdbAcquire(pMnode->pSdb, SDB_CFG, "tsmmConfigVersion");
+  if (item == NULL) {
+    mInfo("failed to acquire mnd config version, since %s", terrstr());
+    goto _OVER;
+  } else {
+    tsmmConfigVersion = item->i32;
+    sdbRelease(pMnode->pSdb, item);
+  }
+
+  for (int i = 0; i < sz; ++i) {
+    SConfigItem *item = taosArrayGet(getGlobalCfg(tsCfg), i);
+    SConfigItem *newItem = sdbAcquire(pMnode->pSdb, SDB_CFG, item->name);
+    if (newItem == NULL) {
+      mInfo("failed to acquire mnd config:%s, since %s", item->name, terrstr());
+      continue;
+    }
+    cfgUpdateItem(item, newItem);
+    sdbRelease(pMnode->pSdb, newItem);
+  }
+_OVER:
+  mndTransDrop(pTrans);
+  return TSDB_CODE_SUCCESS;
+}
+
+int32_t mndSetCreateConfigCommitLogs(STrans *pTrans, SConfigItem *item) {
+  int32_t  code = 0;
+  SSdbRaw *pCommitRaw = mnCfgActionEncode(item);
+  if (pCommitRaw == NULL) {
+    code = terrno;
+    TAOS_RETURN(code);
+  }
+  if ((code = mndTransAppendCommitlog(pTrans, pCommitRaw) != 0)) TAOS_RETURN(code);
+  if ((code = sdbSetRawStatus(pCommitRaw, SDB_STATUS_READY)) != 0) TAOS_RETURN(code);
+  return TSDB_CODE_SUCCESS;
+}
\ No newline at end of file
diff --git a/source/dnode/mnode/impl/src/mndDb.c b/source/dnode/mnode/impl/src/mndDb.c
index 0d17ccd0b0..6f6a45d374 100644
--- a/source/dnode/mnode/impl/src/mndDb.c
+++ b/source/dnode/mnode/impl/src/mndDb.c
@@ -14,10 +14,12 @@
  */
 
 #define _DEFAULT_SOURCE
-#include "mndDb.h"
 #include "audit.h"
+#include "command.h"
 #include "mndArbGroup.h"
 #include "mndCluster.h"
+#include "mndConfig.h"
+#include "mndDb.h"
 #include "mndDnode.h"
 #include "mndIndex.h"
 #include "mndPrivilege.h"
@@ -34,7 +36,6 @@
 #include "systable.h"
 #include "thttp.h"
 #include "tjson.h"
-#include "command.h"
 
 #define DB_VER_NUMBER   1
 #define DB_RESERVE_SIZE 27
@@ -1560,8 +1561,8 @@ static int32_t mndBuildDropVgroupAction(SMnode *pMnode, STrans *pTrans, SDbObj *
 
 static int32_t mndSetDropDbRedoActions(SMnode *pMnode, STrans *pTrans, SDbObj *pDb) {
   int32_t code = 0;
-  SSdb *pSdb = pMnode->pSdb;
-  void *pIter = NULL;
+  SSdb   *pSdb = pMnode->pSdb;
+  void   *pIter = NULL;
 
   while (1) {
     SVgObj *pVgroup = NULL;
@@ -1941,9 +1942,9 @@ int32_t mndValidateDbInfo(SMnode *pMnode, SDbCacheInfo *pDbs, int32_t numOfDbs,
       continue;
     } else {
       mTrace("db:%s, valid dbinfo, vgVersion:%d cfgVersion:%d stateTs:%" PRId64
-            " numOfTables:%d, changed to vgVersion:%d cfgVersion:%d stateTs:%" PRId64 " numOfTables:%d",
-            pDbCacheInfo->dbFName, pDbCacheInfo->vgVersion, pDbCacheInfo->cfgVersion, pDbCacheInfo->stateTs,
-            pDbCacheInfo->numOfTable, pDb->vgVersion, pDb->cfgVersion, pDb->stateTs, numOfTable);
+             " numOfTables:%d, changed to vgVersion:%d cfgVersion:%d stateTs:%" PRId64 " numOfTables:%d",
+             pDbCacheInfo->dbFName, pDbCacheInfo->vgVersion, pDbCacheInfo->cfgVersion, pDbCacheInfo->stateTs,
+             pDbCacheInfo->numOfTable, pDb->vgVersion, pDb->cfgVersion, pDb->stateTs, numOfTable);
     }
 
     if (pDbCacheInfo->cfgVersion < pDb->cfgVersion) {
@@ -1955,7 +1956,7 @@ int32_t mndValidateDbInfo(SMnode *pMnode, SDbCacheInfo *pDbs, int32_t numOfDbs,
       rsp.pTsmaRsp = taosMemoryCalloc(1, sizeof(STableTSMAInfoRsp));
       if (rsp.pTsmaRsp) rsp.pTsmaRsp->pTsmas = taosArrayInit(4, POINTER_BYTES);
       if (rsp.pTsmaRsp && rsp.pTsmaRsp->pTsmas) {
-        bool exist = false;
+        bool    exist = false;
         int32_t code = mndGetDbTsmas(pMnode, 0, pDb->uid, rsp.pTsmaRsp, &exist);
         if (TSDB_CODE_SUCCESS != code) {
           mndReleaseDb(pMnode, pDb);
@@ -2386,7 +2387,8 @@ static void mndDumpDbInfoData(SMnode *pMnode, SSDataBlock *pBlock, SDbObj *pDb,
     TAOS_CHECK_GOTO(colDataSetVal(pColInfo, rows, (const char *)strictVstr, false), &lino, _OVER);
 
     char    durationVstr[128] = {0};
-    int32_t len = formatDurationOrKeep(&durationVstr[VARSTR_HEADER_SIZE], sizeof(durationVstr) - VARSTR_HEADER_SIZE, pDb->cfg.daysPerFile);
+    int32_t len = formatDurationOrKeep(&durationVstr[VARSTR_HEADER_SIZE], sizeof(durationVstr) - VARSTR_HEADER_SIZE,
+                                       pDb->cfg.daysPerFile);
 
     varDataSetLen(durationVstr, len);
     pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
@@ -2402,9 +2404,9 @@ static void mndDumpDbInfoData(SMnode *pMnode, SSDataBlock *pBlock, SDbObj *pDb,
     int32_t lenKeep2 = formatDurationOrKeep(keep2Str, sizeof(keep2Str), pDb->cfg.daysToKeep2);
 
     if (pDb->cfg.daysToKeep0 > pDb->cfg.daysToKeep1 || pDb->cfg.daysToKeep0 > pDb->cfg.daysToKeep2) {
-        len = sprintf(&keepVstr[VARSTR_HEADER_SIZE], "%s,%s,%s", keep1Str, keep2Str, keep0Str);
+      len = sprintf(&keepVstr[VARSTR_HEADER_SIZE], "%s,%s,%s", keep1Str, keep2Str, keep0Str);
     } else {
-        len = sprintf(&keepVstr[VARSTR_HEADER_SIZE], "%s,%s,%s", keep0Str, keep1Str, keep2Str);
+      len = sprintf(&keepVstr[VARSTR_HEADER_SIZE], "%s,%s,%s", keep0Str, keep1Str, keep2Str);
     }
     varDataSetLen(keepVstr, len);
     pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
diff --git a/source/dnode/mnode/impl/src/mndDnode.c b/source/dnode/mnode/impl/src/mndDnode.c
index d981831c12..b4036e328e 100644
--- a/source/dnode/mnode/impl/src/mndDnode.c
+++ b/source/dnode/mnode/impl/src/mndDnode.c
@@ -84,7 +84,6 @@ static int32_t mndProcessDropDnodeReq(SRpcMsg *pReq);
 static int32_t mndProcessConfigDnodeReq(SRpcMsg *pReq);
 static int32_t mndProcessConfigDnodeRsp(SRpcMsg *pRsp);
 static int32_t mndProcessStatusReq(SRpcMsg *pReq);
-static int32_t mndProcessConfigReq(SRpcMsg *pReq);
 static int32_t mndProcessNotifyReq(SRpcMsg *pReq);
 static int32_t mndProcessRestoreDnodeReq(SRpcMsg *pReq);
 static int32_t mndProcessStatisReq(SRpcMsg *pReq);
@@ -123,7 +122,6 @@ int32_t mndInitDnode(SMnode *pMnode) {
   mndSetMsgHandle(pMnode, TDMT_MND_CONFIG_DNODE, mndProcessConfigDnodeReq);
   mndSetMsgHandle(pMnode, TDMT_DND_CONFIG_DNODE_RSP, mndProcessConfigDnodeRsp);
   mndSetMsgHandle(pMnode, TDMT_MND_STATUS, mndProcessStatusReq);
-  mndSetMsgHandle(pMnode, TDMT_MND_CONFIG, mndProcessConfigReq);
   mndSetMsgHandle(pMnode, TDMT_MND_NOTIFY, mndProcessNotifyReq);
   mndSetMsgHandle(pMnode, TDMT_MND_DNODE_LIST, mndProcessDnodeListReq);
   mndSetMsgHandle(pMnode, TDMT_MND_SHOW_VARIABLES, mndProcessShowVariablesReq);
@@ -924,49 +922,7 @@ _OVER:
   return mndUpdClusterInfo(pReq);
 }
 
-static int32_t mndProcessConfigReq(SRpcMsg *pReq) {
-  SMnode    *pMnode = pReq->info.node;
-  SConfigReq configReq = {0};
-  SDnodeObj *pDnode = NULL;
-  int32_t    code = -1;
 
-  tDeserializeSConfigReq(pReq->pCont, pReq->contLen, &configReq);
-  SArray    *diffArray = taosArrayInit(16, sizeof(SConfigItem));
-  SConfigRsp configRsp = {0};
-  configRsp.forceReadConfig = configReq.forceReadConfig;
-  configRsp.cver = tsmmConfigVersion;
-  if (configRsp.forceReadConfig) {
-    // compare config array from configReq with current config array
-    if (compareSConfigItemArrays(getGlobalCfg(tsCfg), configReq.array, diffArray)) {
-      configRsp.array = diffArray;
-    } else {
-      configRsp.isConifgVerified = 1;
-      taosArrayDestroy(diffArray);
-    }
-  } else {
-    configRsp.array = getGlobalCfg(tsCfg);
-    if (configReq.cver == tsmmConfigVersion) {
-      configRsp.isVersionVerified = 1;
-    } else {
-      configRsp.array = getGlobalCfg(tsCfg);
-    }
-  }
-
-  int32_t contLen = tSerializeSConfigRsp(NULL, 0, &configRsp);
-  void   *pHead = rpcMallocCont(contLen);
-  contLen = tSerializeSConfigRsp(pHead, contLen, &configRsp);
-  taosArrayDestroy(diffArray);
-  if (contLen < 0) {
-    code = contLen;
-    goto _OVER;
-  }
-  pReq->info.rspLen = contLen;
-  pReq->info.rsp = pHead;
-_OVER:
-
-  mndReleaseDnode(pMnode, pDnode);
-  return mndUpdClusterInfo(pReq);
-}
 
 static int32_t mndProcessNotifyReq(SRpcMsg *pReq) {
   SMnode    *pMnode = pReq->info.node;
diff --git a/source/dnode/mnode/impl/src/mndMain.c b/source/dnode/mnode/impl/src/mndMain.c
index 6c30193ea7..4cdad9825f 100644
--- a/source/dnode/mnode/impl/src/mndMain.c
+++ b/source/dnode/mnode/impl/src/mndMain.c
@@ -15,11 +15,12 @@
 
 #define _DEFAULT_SOURCE
 #include "mndAcct.h"
-#include "mndArbGroup.h"
 #include "mndAnode.h"
+#include "mndArbGroup.h"
 #include "mndCluster.h"
 #include "mndCompact.h"
 #include "mndCompactDetail.h"
+#include "mndConfig.h"
 #include "mndConsumer.h"
 #include "mndDb.h"
 #include "mndDnode.h"
@@ -603,6 +604,7 @@ static int32_t mndAllocStep(SMnode *pMnode, char *name, MndInitFp initFp, MndCle
 
 static int32_t mndInitSteps(SMnode *pMnode) {
   TAOS_CHECK_RETURN(mndAllocStep(pMnode, "mnode-wal", mndInitWal, mndCloseWal));
+  TAOS_CHECK_RETURN(mndAllocStep(pMnode, "mnode-config", mndInitConfig, mndCleanupArbGroup));
   TAOS_CHECK_RETURN(mndAllocStep(pMnode, "mnode-sdb", mndInitSdb, mndCleanupSdb));
   TAOS_CHECK_RETURN(mndAllocStep(pMnode, "mnode-trans", mndInitTrans, mndCleanupTrans));
   TAOS_CHECK_RETURN(mndAllocStep(pMnode, "mnode-cluster", mndInitCluster, mndCleanupCluster));
diff --git a/source/dnode/mnode/sdb/inc/sdb.h b/source/dnode/mnode/sdb/inc/sdb.h
index f6d1587bb2..c9b352d79e 100644
--- a/source/dnode/mnode/sdb/inc/sdb.h
+++ b/source/dnode/mnode/sdb/inc/sdb.h
@@ -60,6 +60,7 @@ extern "C" {
 #define SDB_GET_INT16(pData, dataPos, val, pos) SDB_GET_VAL(pData, dataPos, val, pos, sdbGetRawInt16, int16_t)
 #define SDB_GET_INT8(pData, dataPos, val, pos)  SDB_GET_VAL(pData, dataPos, val, pos, sdbGetRawInt8, int8_t)
 #define SDB_GET_UINT8(pData, dataPos, val, pos) SDB_GET_VAL(pData, dataPos, val, pos, sdbGetRawUInt8, uint8_t)
+#define SDB_GET_BOOL(pData, dataPos, val, pos)  SDB_GET_VAL(pData, dataPos, val, pos, sdbGetRawBool, bool)
 
 #define SDB_GET_RESERVE(pRaw, dataPos, valLen, pos) \
   {                                                 \
@@ -81,6 +82,7 @@ extern "C" {
 #define SDB_SET_INT16(pRaw, dataPos, val, pos) SDB_SET_VAL(pRaw, dataPos, val, pos, sdbSetRawInt16, int16_t)
 #define SDB_SET_INT8(pRaw, dataPos, val, pos)  SDB_SET_VAL(pRaw, dataPos, val, pos, sdbSetRawInt8, int8_t)
 #define SDB_SET_UINT8(pRaw, dataPos, val, pos) SDB_SET_VAL(pRaw, dataPos, val, pos, sdbSetRawUInt8, uint8_t)
+#define SDB_SET_BOOL(pRaw, dataPos, val, pos)  SDB_SET_VAL(pRaw, dataPos, val, pos, sdbSetRawBool, bool)
 
 #define SDB_SET_BINARY(pRaw, dataPos, val, valLen, pos)              \
   {                                                                  \
@@ -162,7 +164,8 @@ typedef enum {
   SDB_GRANT = 26,  // grant log
   SDB_ARBGROUP = 27,
   SDB_ANODE = 28,
-  SDB_MAX = 29
+  SDB_MAX = 29,
+  SDB_CFG = 30
 } ESdbType;
 
 typedef struct SSdbRaw {
@@ -373,7 +376,7 @@ int32_t sdbGetSize(SSdb *pSdb, ESdbType type);
 /**
  * @brief get valid number of rows, removed rows are ignored
  */
-int32_t sdbGetValidSize(SSdb* pSdb, ESdbType type);
+int32_t sdbGetValidSize(SSdb *pSdb, ESdbType type);
 
 /**
  * @brief Get the max id of the table, keyType of table should be INT32
@@ -407,6 +410,7 @@ SSdbRaw *sdbAllocRaw(ESdbType type, int8_t sver, int32_t dataLen);
 void     sdbFreeRaw(SSdbRaw *pRaw);
 int32_t  sdbSetRawInt8(SSdbRaw *pRaw, int32_t dataPos, int8_t val);
 int32_t  sdbSetRawUInt8(SSdbRaw *pRaw, int32_t dataPos, uint8_t val);
+int32_t  sdbSetRawBool(SSdbRaw *pRaw, int32_t dataPos, bool val);
 int32_t  sdbSetRawInt16(SSdbRaw *pRaw, int32_t dataPos, int16_t val);
 int32_t  sdbSetRawInt32(SSdbRaw *pRaw, int32_t dataPos, int32_t val);
 int32_t  sdbSetRawInt64(SSdbRaw *pRaw, int32_t dataPos, int64_t val);
@@ -415,6 +419,7 @@ int32_t  sdbSetRawDataLen(SSdbRaw *pRaw, int32_t dataLen);
 int32_t  sdbSetRawStatus(SSdbRaw *pRaw, ESdbStatus status);
 int32_t  sdbGetRawInt8(SSdbRaw *pRaw, int32_t dataPos, int8_t *val);
 int32_t  sdbGetRawUInt8(SSdbRaw *pRaw, int32_t dataPos, uint8_t *val);
+int32_t  sdbGetRawBool(SSdbRaw *pRaw, int32_t dataPos, bool *val);
 int32_t  sdbGetRawInt16(SSdbRaw *pRaw, int32_t dataPos, int16_t *val);
 int32_t  sdbGetRawInt32(SSdbRaw *pRaw, int32_t dataPos, int32_t *val);
 int32_t  sdbGetRawInt64(SSdbRaw *pRaw, int32_t dataPos, int64_t *val);
diff --git a/source/dnode/mnode/sdb/src/sdbRaw.c b/source/dnode/mnode/sdb/src/sdbRaw.c
index 24ac2ac462..c71e415d1b 100644
--- a/source/dnode/mnode/sdb/src/sdbRaw.c
+++ b/source/dnode/mnode/sdb/src/sdbRaw.c
@@ -84,6 +84,14 @@ int32_t sdbSetRawUInt8(SSdbRaw *pRaw, int32_t dataPos, uint8_t val) {
   return 0;
 }
 
+int32_t sdbSetRawBool(SSdbRaw *pRaw, int32_t dataPos, bool val) {
+  if (val) {
+    return sdbSetRawUInt8(pRaw, dataPos, 1);
+  } else {
+    return sdbSetRawUInt8(pRaw, dataPos, 0);
+  }
+}
+
 int32_t sdbSetRawInt32(SSdbRaw *pRaw, int32_t dataPos, int32_t val) {
   int32_t code = 0;
   if (pRaw == NULL) {
@@ -214,6 +222,21 @@ int32_t sdbGetRawUInt8(SSdbRaw *pRaw, int32_t dataPos, uint8_t *val) {
   return 0;
 }
 
+int32_t sdbGetRawBool(SSdbRaw *pRaw, int32_t dataPos, bool *val) {
+  int32_t code = 0;
+  uint8_t v = 0;
+  code = sdbGetRawUInt8(pRaw, dataPos, &v);
+  if (code != TSDB_CODE_SUCCESS) {
+    return code;
+  }
+  if (v) {
+    *val = true;
+  } else {
+    *val = false;
+  }
+  return TSDB_CODE_SUCCESS;
+}
+
 int32_t sdbGetRawInt32(SSdbRaw *pRaw, int32_t dataPos, int32_t *val) {
   int32_t code = 0;
   if (pRaw == NULL) {
diff --git a/source/util/src/tconfig.c b/source/util/src/tconfig.c
index 3fed23e8a2..ca3b123472 100644
--- a/source/util/src/tconfig.c
+++ b/source/util/src/tconfig.c
@@ -404,6 +404,47 @@ int32_t cfgSetItem(SConfig *pCfg, const char *name, const char *value, ECfgSrcTy
   TAOS_RETURN(code);
 }
 
+int32_t cfgUpdateItem(SConfigItem *pItem, SConfigItem *newItem) {
+  int32_t code = TSDB_CODE_SUCCESS;
+  if (pItem == NULL || newItem == NULL) {
+    TAOS_RETURN(TSDB_CODE_OUT_OF_MEMORY);
+  }
+
+  switch (pItem->dtype) {
+    case CFG_DTYPE_BOOL: {
+      pItem->bval = newItem->bval;
+      break;
+    }
+    case CFG_DTYPE_INT32: {
+      pItem->i32 = newItem->i32;
+      break;
+    }
+    case CFG_DTYPE_INT64: {
+      pItem->i64 = newItem->i64;
+      break;
+    }
+    case CFG_DTYPE_FLOAT:
+    case CFG_DTYPE_DOUBLE: {
+      pItem->fval = newItem->fval;
+      break;
+    }
+    case CFG_DTYPE_DIR:
+    case CFG_DTYPE_TIMEZONE:
+    case CFG_DTYPE_CHARSET:
+    case CFG_DTYPE_LOCALE:
+    case CFG_DTYPE_NONE:
+    case CFG_DTYPE_STRING: {
+      pItem->str = newItem->str;
+      break;
+    }
+    default:
+      code = TSDB_CODE_INVALID_CFG;
+      break;
+  }
+
+  TAOS_RETURN(code);
+}
+
 SConfigItem *cfgGetItem(SConfig *pCfg, const char *pName) {
   if (pCfg == NULL) return NULL;
   int32_t size = taosArrayGetSize(pCfg->localArray);