diff --git a/src/dnode/src/dnodeCfg.c b/src/dnode/src/dnodeCfg.c
index e008d2fa0d82ea65c0c60ce31d6064de1790f978..fd5956b37f28603893b43ca91f8cfd1177dccad2 100644
--- a/src/dnode/src/dnodeCfg.c
+++ b/src/dnode/src/dnodeCfg.c
@@ -156,7 +156,7 @@ static int32_t dnodeWriteCfg() {
   len += snprintf(content + len, maxLen - len, "}\n");
 
   fwrite(content, 1, len, fp);
-  fflush(fp);
+  fsync(fileno(fp));
   fclose(fp);
   free(content);
   terrno = 0;
diff --git a/src/dnode/src/dnodeEps.c b/src/dnode/src/dnodeEps.c
index 1e05c696ce28d3594349ca1e5134550687017893..9554651776ad0e9c961a3d15955491b224d869bf 100644
--- a/src/dnode/src/dnodeEps.c
+++ b/src/dnode/src/dnodeEps.c
@@ -277,7 +277,7 @@ static int32_t dnodeWriteEps() {
   len += snprintf(content + len, maxLen - len, "}\n");
 
   fwrite(content, 1, len, fp);
-  fflush(fp);
+  fsync(fileno(fp));
   fclose(fp);
   free(content);
   terrno = 0;
diff --git a/src/dnode/src/dnodeMInfos.c b/src/dnode/src/dnodeMInfos.c
index 884924f113c3d0131bf0627a3c2563edbf819ec4..0dca116d84a8267231acba686018cf6c07ae15e0 100644
--- a/src/dnode/src/dnodeMInfos.c
+++ b/src/dnode/src/dnodeMInfos.c
@@ -286,7 +286,7 @@ static int32_t dnodeWriteMInfos() {
   len += snprintf(content + len, maxLen - len, "}\n");
 
   fwrite(content, 1, len, fp);
-  fflush(fp);
+  fsync(fileno(fp));
   fclose(fp);
   free(content);
   terrno = 0;
diff --git a/src/mnode/src/mnodeUser.c b/src/mnode/src/mnodeUser.c
index d12e49e3cea2c71e517af5103d810dfa71faf370..55ee39b6bceb7a3d5ebc8838e1a9a2151ccb6c3d 100644
--- a/src/mnode/src/mnodeUser.c
+++ b/src/mnode/src/mnodeUser.c
@@ -123,7 +123,7 @@ static void mnodePrintUserAuth() {
     mnodeDecUserRef(pUser);
   }
 
-  fflush(fp);
+  fsync(fileno(fp));
   fclose(fp);
 }
 
diff --git a/src/vnode/src/vnodeCfg.c b/src/vnode/src/vnodeCfg.c
index 1ea774afaec92218408c5115ee6ee43e67836efd..9b7916c8bd3b4c5878b0edc3431802b3ed7cd4f6 100644
--- a/src/vnode/src/vnodeCfg.c
+++ b/src/vnode/src/vnodeCfg.c
@@ -341,7 +341,7 @@ int32_t vnodeWriteCfg(SCreateVnodeMsg *pMsg) {
   len += snprintf(content + len, maxLen - len, "}\n");
 
   fwrite(content, 1, len, fp);
-  fflush(fp);
+  fsync(fileno(fp));
   fclose(fp);
   free(content);
   terrno = 0;
diff --git a/src/vnode/src/vnodeVersion.c b/src/vnode/src/vnodeVersion.c
index 68fa32b2de94a6565d734a8adf95ed1e76d3c63c..d22bc17cbeda570f119a5a6e67637382f3a25bf8 100644
--- a/src/vnode/src/vnodeVersion.c
+++ b/src/vnode/src/vnodeVersion.c
@@ -90,7 +90,7 @@ int32_t vnodeSaveVersion(SVnodeObj *pVnode) {
   len += snprintf(content + len, maxLen - len, "}\n");
 
   fwrite(content, 1, len, fp);
-  fflush(fp);
+  fsync(fileno(fp));
   fclose(fp);
   free(content);
   terrno = 0;