diff --git a/pkg/appsrv/appsrv.go b/pkg/appsrv/appsrv.go
index 6aa7e059a09..61f731cae90 100644
--- a/pkg/appsrv/appsrv.go
+++ b/pkg/appsrv/appsrv.go
@@ -574,16 +574,20 @@ func (app *Application) ListenAndServeWithoutCleanup(addr, certFile, keyFile str
 func (app *Application) ListenAndServeTLSWithCleanup2(addr string, certFile, keyFile string, onStop func(), isMaster bool) {
 	app.isTLS = true
 	httpSrv := app.initServer(addr)
+	log.Infof("listen on %s, isMaster: %v, certFile: %s, keyFile: %s", addr, isMaster, certFile, keyFile)
 	if isMaster {
 		app.addDefaultHandlers()
 		if app.enableProfiling {
 			addPProfHandler("", app)
 		}
 		app.httpServer = httpSrv
+		log.Infof("----------register cleanShutdown")
 		app.registerCleanShutdown(app.httpServer, onStop)
+		log.Infof("----------end register cleanShutdown")
 	} else {
 		app.slaveHttpServer = httpSrv
 	}
+	log.Infof("[listenAndServeInternal] listen on %s, isMaster: %v, certFile: %s, keyFile: %s", addr, isMaster, certFile, keyFile)
 	app.listenAndServeInternal(httpSrv, certFile, keyFile)
 	if isMaster {
 		app.waitCleanShutdown()
diff --git a/pkg/hostman/host_services.go b/pkg/hostman/host_services.go
index ef56e6ad6c3..c93a29f7c0e 100644
--- a/pkg/hostman/host_services.go
+++ b/pkg/hostman/host_services.go
@@ -17,6 +17,7 @@ package hostman
 import (
 	execlient "yunion.io/x/executor/client"
 	"yunion.io/x/log"
+	"yunion.io/x/pkg/util/signalutils"
 
 	"yunion.io/x/onecloud/pkg/appsrv"
 	app_common "yunion.io/x/onecloud/pkg/cloudcommon/app"
@@ -157,6 +158,10 @@ func (host *SHostService) initHandlers(app *appsrv.Application) {
 }
 
 func StartService() {
+	// register dump stack signal handler at first
+	signalutils.SetDumpStackSignal()
+	signalutils.StartTrap()
+
 	var srv = &SHostService{}
 	srv.SServiceBase = &service.SServiceBase{
 		Service: srv,
diff --git a/vendor/yunion.io/x/pkg/util/signalutils/signalutils.go b/vendor/yunion.io/x/pkg/util/signalutils/signalutils.go
index 765308f9fce..6981bc76688 100644
--- a/vendor/yunion.io/x/pkg/util/signalutils/signalutils.go
+++ b/vendor/yunion.io/x/pkg/util/signalutils/signalutils.go
@@ -35,6 +35,7 @@ var signalManager *SSignalManager
 type Trap func()
 
 func RegisterSignal(trap Trap, sigs ...os.Signal) {
+	log.Infof("===RegisterSignal trap: %v, sigs: %#v", trap, sigs)
 	signalManager.mtx.Lock()
 	defer signalManager.mtx.Unlock()
 	if !signalManager.started {
@@ -66,12 +67,16 @@ func StartTrap() {
 				debug.PrintStack()
 			}
 		}()
-		signalManager.mtx.RLock()
-		defer signalManager.mtx.RUnlock()
 		for {
 			s := <-signalManager.sig
-			trapFunc := signalManager.traps[s]
-			trapFunc()
+			trapFunc := func(s os.Signal) Trap {
+				signalManager.mtx.RLock()
+				defer signalManager.mtx.RUnlock()
+
+				return signalManager.traps[s]
+			}
+			log.Infof("===Get signal trap func %s: %v", s.String(), trapFunc)
+			trapFunc(s)
 		}
 	}()
 }
diff --git a/vendor/yunion.io/x/pkg/utils/profiler.go b/vendor/yunion.io/x/pkg/utils/profiler.go
index 7394137b37b..53dc082d3d0 100644
--- a/vendor/yunion.io/x/pkg/utils/profiler.go
+++ b/vendor/yunion.io/x/pkg/utils/profiler.go
@@ -17,8 +17,10 @@ package utils
 import (
 	"io"
 	"runtime/pprof"
+	"fmt"
 )
 
 func DumpAllGoroutineStack(w io.Writer) {
+	fmt.Printf("=========DumpAllGoroutineStack")
 	pprof.Lookup("goroutine").WriteTo(w, 1)
 }