diff --git a/internal/datacoord/server.go b/internal/datacoord/server.go
index d2cd6f9180a3c..c2c523565ceb9 100644
--- a/internal/datacoord/server.go
+++ b/internal/datacoord/server.go
@@ -318,7 +318,7 @@ func (s *Server) Init() error {
 			log.Info("DataCoord startup success")
 			return nil
 		}
-		s.stateCode.Store(commonpb.StateCode_StandBy)
+		s.UpdateStateCode(commonpb.StateCode_StandBy)
 		log.Info("DataCoord enter standby mode successfully")
 		return nil
 	}
@@ -328,7 +328,7 @@ func (s *Server) Init() error {
 
 func (s *Server) initDataCoord() error {
 	log := log.Ctx(s.ctx)
-	s.stateCode.Store(commonpb.StateCode_Initializing)
+	s.UpdateStateCode(commonpb.StateCode_Initializing)
 	var err error
 	if err = s.initRootCoordClient(); err != nil {
 		return err
@@ -463,7 +463,7 @@ func (s *Server) startDataCoord() {
 	// })
 
 	s.afterStart()
-	s.stateCode.Store(commonpb.StateCode_Healthy)
+	s.UpdateStateCode(commonpb.StateCode_Healthy)
 	sessionutil.SaveServerInfo(typeutil.DataCoordRole, s.session.GetServerID())
 }
 
diff --git a/internal/datacoord/services.go b/internal/datacoord/services.go
index 86c58419734b8..000be0f6c05c3 100644
--- a/internal/datacoord/services.go
+++ b/internal/datacoord/services.go
@@ -688,6 +688,12 @@ func (s *Server) GetStateCode() commonpb.StateCode {
 	return code.(commonpb.StateCode)
 }
 
+// UpdateStateCode update state code
+func (s *Server) UpdateStateCode(code commonpb.StateCode) {
+	s.stateCode.Store(code)
+	log.Ctx(s.ctx).Info("update datacoord state", zap.String("state", code.String()))
+}
+
 // GetComponentStates returns DataCoord's current state
 func (s *Server) GetComponentStates(ctx context.Context, req *milvuspb.GetComponentStatesRequest) (*milvuspb.ComponentStates, error) {
 	code := s.GetStateCode()
diff --git a/internal/http/healthz/healthz_handler.go b/internal/http/healthz/healthz_handler.go
index 62c98e1cd83cc..4e203d20a39e7 100644
--- a/internal/http/healthz/healthz_handler.go
+++ b/internal/http/healthz/healthz_handler.go
@@ -90,14 +90,14 @@ func (handler *HealthHandler) ServeHTTP(w http.ResponseWriter, r *http.Request)
 	resp := &HealthResponse{
 		State: "OK",
 	}
+
+	unhealthyComponent := make([]string, 0)
 	ctx := context.Background()
-	healthNum := 0
 	for _, in := range handler.indicators {
 		handler.unregisterLock.RLock()
 		_, unregistered := handler.unregisteredRoles[in.GetName()]
 		handler.unregisterLock.RUnlock()
 		if unregistered {
-			healthNum++
 			continue
 		}
 		code := in.Health(ctx)
@@ -105,13 +105,15 @@ func (handler *HealthHandler) ServeHTTP(w http.ResponseWriter, r *http.Request)
 			Name: in.GetName(),
 			Code: code,
 		})
-		if code == commonpb.StateCode_Healthy || code == commonpb.StateCode_StandBy {
-			healthNum++
+
+		if code != commonpb.StateCode_Healthy && code != commonpb.StateCode_StandBy {
+			unhealthyComponent = append(unhealthyComponent, in.GetName())
 		}
 	}
 
-	if healthNum != handler.indicatorNum {
-		resp.State = fmt.Sprintf("Not all components are healthy, %d/%d", healthNum, handler.indicatorNum)
+	if len(unhealthyComponent) > 0 {
+		resp.State = fmt.Sprintf("Not all components are healthy, %d/%d", handler.indicatorNum-len(unhealthyComponent), handler.indicatorNum)
+		log.Info("check health failed", zap.Strings("UnhealthyComponent", unhealthyComponent))
 	}
 
 	if resp.State == "OK" {
diff --git a/internal/querycoordv2/server.go b/internal/querycoordv2/server.go
index 25c7714a69681..082a921bd3aa7 100644
--- a/internal/querycoordv2/server.go
+++ b/internal/querycoordv2/server.go
@@ -671,6 +671,7 @@ func (s *Server) Stop() error {
 // UpdateStateCode updates the status of the coord, including healthy, unhealthy
 func (s *Server) UpdateStateCode(code commonpb.StateCode) {
 	s.status.Store(int32(code))
+	log.Ctx(s.ctx).Info("update querycoord state", zap.String("state", code.String()))
 }
 
 func (s *Server) State() commonpb.StateCode {