diff --git a/pkg/ansibleserver/service/service.go b/pkg/ansibleserver/service/service.go
index e0c3a287c3..5fddf1c196 100644
--- a/pkg/ansibleserver/service/service.go
+++ b/pkg/ansibleserver/service/service.go
@@ -39,21 +39,13 @@ func StartService() {
 	})
 
 	dbOpts := &opts.DBOptions
-	cloudcommon.InitDB(dbOpts)
-	defer cloudcommon.CloseDB()
-
 	baseOpts := &opts.BaseOptions
+
 	app := common_app.InitApp(baseOpts, false)
 	InitHandlers(app)
 
-	if !db.CheckSync(opts.AutoSyncTable) {
-		log.Fatalf("database schema not in sync!")
-	}
-
-	err := models.InitDB()
-	if err != nil {
-		log.Errorf("InitDB fail: %s", err)
-	}
+	db.EnsureAppInitSyncDB(app, dbOpts, models.InitDB)
+	defer cloudcommon.CloseDB()
 
 	common_app.ServeForever(app, baseOpts)
 }
diff --git a/pkg/cloudcommon/db/models.go b/pkg/cloudcommon/db/models.go
index aabfdb1a04..b01f28cb00 100644
--- a/pkg/cloudcommon/db/models.go
+++ b/pkg/cloudcommon/db/models.go
@@ -16,10 +16,15 @@ package db
 
 import (
 	"fmt"
+	"os"
 
 	"yunion.io/x/log"
 	"yunion.io/x/pkg/utils"
 	"yunion.io/x/sqlchemy"
+
+	"yunion.io/x/onecloud/pkg/appsrv"
+	"yunion.io/x/onecloud/pkg/cloudcommon"
+	common_options "yunion.io/x/onecloud/pkg/cloudcommon/options"
 )
 
 var globalTables map[string]IModelManager
@@ -100,6 +105,27 @@ func CheckSync(autoSync bool) bool {
 	return inSync
 }
 
+func EnsureAppInitSyncDB(app *appsrv.Application, opt *common_options.DBOptions, modelInitDBFunc func() error) {
+	cloudcommon.InitDB(opt)
+
+	if !CheckSync(opt.AutoSyncTable) {
+		log.Fatalf("database schema not in sync!")
+	}
+
+	if modelInitDBFunc != nil {
+		if err := modelInitDBFunc(); err != nil {
+			log.Fatalf("model init db: %v", err)
+		}
+	}
+
+	if opt.ExitAfterDBInit {
+		log.Infof("Exiting after db initialization ...")
+		os.Exit(0)
+	}
+
+	cloudcommon.AppDBInit(app)
+}
+
 func GetModelManager(keyword string) IModelManager {
 	modelMan, ok := globalTables[keyword]
 	if ok {
diff --git a/pkg/compute/models/schedtags.go b/pkg/compute/models/schedtags.go
index e4f886ef97..fdbcaa805e 100644
--- a/pkg/compute/models/schedtags.go
+++ b/pkg/compute/models/schedtags.go
@@ -97,17 +97,17 @@ func (manager *SSchedtagManager) InitializeData() error {
 			return nil
 		})
 	}
-	manager.BindJointManagers(
-		HostschedtagManager,
-		StorageschedtagManager,
-		NetworkschedtagManager,
-	)
+	manager.BindJointManagers(map[db.IModelManager]ISchedtagJointManager{
+		HostManager:    HostschedtagManager,
+		StorageManager: StorageschedtagManager,
+		NetworkManager: NetworkschedtagManager,
+	})
 	return nil
 }
 
-func (manager *SSchedtagManager) BindJointManagers(ms ...ISchedtagJointManager) {
-	for _, m := range ms {
-		manager.jointsManager[m.GetMasterManager().KeywordPlural()] = m
+func (manager *SSchedtagManager) BindJointManagers(ms map[db.IModelManager]ISchedtagJointManager) {
+	for m, schedtagM := range ms {
+		manager.jointsManager[m.KeywordPlural()] = schedtagM
 	}
 }
 
diff --git a/pkg/compute/service/service.go b/pkg/compute/service/service.go
index e1971b7866..05b892c466 100644
--- a/pkg/compute/service/service.go
+++ b/pkg/compute/service/service.go
@@ -64,23 +64,13 @@ func StartService() {
 		log.Infof("Auth complete!!")
 	})
 
-	cloudcommon.InitDB(dbOpts)
-	defer cloudcommon.CloseDB()
-
 	app := app_common.InitApp(baseOpts, true)
-	cloudcommon.AppDBInit(app)
 	InitHandlers(app)
 
-	if !db.CheckSync(opts.AutoSyncTable) {
-		log.Fatalf("database schema not in sync!")
-	}
+	db.EnsureAppInitSyncDB(app, dbOpts, models.InitDB)
+	defer cloudcommon.CloseDB()
 
-	err := models.InitDB()
-	if err != nil {
-		log.Errorf("InitDB fail: %s", err)
-	}
-
-	err = setInfluxdbRetentionPolicy()
+	err := setInfluxdbRetentionPolicy()
 	if err != nil {
 		log.Errorf("setInfluxdbRetentionPolicy fail: %s", err)
 	}
diff --git a/pkg/image/service/service.go b/pkg/image/service/service.go
index 2272d6c32e..189b848fde 100644
--- a/pkg/image/service/service.go
+++ b/pkg/image/service/service.go
@@ -91,16 +91,10 @@ func StartService() {
 		return
 	}
 
-	cloudcommon.InitDB(dbOpts)
-
 	app := app_common.InitApp(baseOpts, true)
 	initHandlers(app)
 
-	if !db.CheckSync(opts.AutoSyncTable) {
-		log.Fatalf("database schema not in sync!")
-	}
-
-	models.InitDB()
+	db.EnsureAppInitSyncDB(app, dbOpts, models.InitDB)
 
 	go models.CheckImages()
 
diff --git a/pkg/keystone/service/service.go b/pkg/keystone/service/service.go
index 7e19c9da99..7aa6dc996e 100644
--- a/pkg/keystone/service/service.go
+++ b/pkg/keystone/service/service.go
@@ -21,8 +21,6 @@ import (
 	_ "github.com/go-sql-driver/mysql"
 	"github.com/golang-plus/uuid"
 
-	"yunion.io/x/log"
-
 	api "yunion.io/x/onecloud/pkg/apis/identity"
 	"yunion.io/x/onecloud/pkg/cloudcommon"
 	app_common "yunion.io/x/onecloud/pkg/cloudcommon/app"
@@ -75,28 +73,10 @@ func StartService() {
 	app := app_common.InitApp(&opts.BaseOptions, true)
 	initHandlers(app)
 
-	cloudcommon.InitDB(&opts.DBOptions)
-
-	if !db.CheckSync(opts.AutoSyncTable) {
-		log.Fatalf("database schema not in sync!")
-	}
-
-	models.InitDB()
-
-	if opts.ExitAfterDBInit {
-		log.Infof("Exiting after db initialization ...")
-		os.Exit(0)
-	}
+	db.EnsureAppInitSyncDB(app, &opts.DBOptions, models.InitDB)
 
 	app_common.InitBaseAuth(&opts.BaseOptions)
 
-	cloudcommon.AppDBInit(app)
-
-	err := models.InitDB()
-	if err != nil {
-		log.Errorf("InitDB fail: %s", err)
-	}
-
 	if !opts.IsSlaveNode {
 		cron := cronman.GetCronJobManager(true)