diff --git a/source/common/src/tglobal.c b/source/common/src/tglobal.c
index 27dcbd5be3d4fd3ccab8475ba26d69edde9050fc..f2d8b9aa7c3460c035db7dfcee82f76eb62749d5 100644
--- a/source/common/src/tglobal.c
+++ b/source/common/src/tglobal.c
@@ -277,7 +277,9 @@ static int32_t taosAddServerLogCfg(SConfig *pCfg) {
 static int32_t taosAddClientCfg(SConfig *pCfg) {
   char    defaultFqdn[TSDB_FQDN_LEN] = {0};
   int32_t defaultServerPort = 6030;
-  if (taosGetFqdn(defaultFqdn) != 0) return -1;
+  if (taosGetFqdn(defaultFqdn) != 0) {
+    strcpy(defaultFqdn, "localhost");
+  }
 
   if (cfgAddString(pCfg, "firstEp", "", 1) != 0) return -1;
   if (cfgAddString(pCfg, "secondEp", "", 1) != 0) return -1;