diff --git a/src/dnode/src/dnodeCfg.c b/src/dnode/src/dnodeCfg.c
index e008d2fa0d..fd5956b37f 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 1e05c696ce..9554651776 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 884924f113..0dca116d84 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 d12e49e3ce..55ee39b6bc 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 1ea774afae..9b7916c8bd 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 68fa32b2de..d22bc17cbe 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;