diff --git a/src/common/src/tglobal.c b/src/common/src/tglobal.c
index 381d2804c1a2fa66cdef46232bdb9f2f05b2b6f1..ec7249cef50ec496c678b85b2cbf0e289ed994a5 100644
--- a/src/common/src/tglobal.c
+++ b/src/common/src/tglobal.c
@@ -38,7 +38,7 @@ uint16_t tsDnodeDnodePort = 6035;  // udp/tcp
 uint16_t tsSyncPort = 6040;
 uint16_t tsArbitratorPort = 6042;
 int32_t  tsStatusInterval = 1;  // second
-int32_t  tsNumOfMnodes = 3;
+int32_t  tsNumOfMnodes = 1;
 int8_t   tsEnableVnodeBak = 1;
 int8_t   tsEnableTelemetryReporting = 1;
 int8_t   tsArbOnline = 0;