diff --git a/models/migration.go b/models/migration.go
index 277020d..9d2af47 100644
--- a/models/migration.go
+++ b/models/migration.go
@@ -48,6 +48,9 @@ func migration() {
 	// 创建初始管理员账户
 	addDefaultUser()
 
+	// 创建初始节点
+	addDefaultNode()
+
 	// 向设置数据表添加初始设置
 	addDefaultSettings()
 
@@ -268,3 +271,22 @@ func addDefaultUser() {
 		util.Log().Info("初始管理员密码：" + c.Sprint(password))
 	}
 }
+
+func addDefaultNode() {
+	_, err := GetNodeByID(1)
+
+	if gorm.IsRecordNotFoundError(err) {
+		defaultAdminGroup := Node{
+			Name:   "主机（本机）",
+			Status: NodeActive,
+			Type:   MasterNodeType,
+			Aria2OptionsSerialized: Aria2Option{
+				Interval: 10,
+				Timeout:  10,
+			},
+		}
+		if err := DB.Create(&defaultAdminGroup).Error; err != nil {
+			util.Log().Panic("无法创建初始节点记录, %s", err)
+		}
+	}
+}
diff --git a/pkg/cluster/pool.go b/pkg/cluster/pool.go
index 73a81bb..2181df4 100644
--- a/pkg/cluster/pool.go
+++ b/pkg/cluster/pool.go
@@ -136,7 +136,7 @@ func (pool *NodePool) Add(node *model.Node) {
 		old, ok = pool.inactive[node.ID]
 	}
 	if old != nil {
-		old.Init(node)
+		go old.Init(node)
 		return
 	}
 
diff --git a/pkg/cluster/slave.go b/pkg/cluster/slave.go
index a76f238..ac8a46a 100644
--- a/pkg/cluster/slave.go
+++ b/pkg/cluster/slave.go
@@ -34,7 +34,6 @@ type slaveCaller struct {
 // Init 初始化节点
 func (node *SlaveNode) Init(nodeModel *model.Node) {
 	node.lock.Lock()
-	defer node.lock.Unlock()
 	node.Model = nodeModel
 
 	// Init http request client
@@ -54,12 +53,15 @@ func (node *SlaveNode) Init(nodeModel *model.Node) {
 	)
 
 	node.caller.parent = node
-	node.Active = true
 	if node.close != nil {
+		node.lock.Unlock()
 		node.close <- true
+		go node.StartPingLoop()
+	} else {
+		node.Active = true
+		node.lock.Unlock()
+		go node.StartPingLoop()
 	}
-
-	go node.StartPingLoop()
 }
 
 // IsFeatureEnabled 查询节点的某项功能是否启用
@@ -84,6 +86,9 @@ func (node *SlaveNode) SubscribeStatusChange(callback func(bool, uint)) {
 
 // Ping 从机节点，返回从机负载
 func (node *SlaveNode) Ping(req *serializer.NodePingReq) (*serializer.NodePingResp, error) {
+	node.lock.RLock()
+	defer node.lock.RUnlock()
+
 	reqBodyEncoded, err := json.Marshal(req)
 	if err != nil {
 		return nil, err
diff --git a/pkg/conf/version.go b/pkg/conf/version.go
index 9c1d1dc..831e612 100644
--- a/pkg/conf/version.go
+++ b/pkg/conf/version.go
@@ -4,7 +4,7 @@ package conf
 var BackendVersion = "3.3.2"
 
 // RequiredDBVersion 与当前版本匹配的数据库版本
-var RequiredDBVersion = "3.3.2"
+var RequiredDBVersion = "3.4.0-beta"
 
 // RequiredStaticVersion 与当前版本匹配的静态资源版本
 var RequiredStaticVersion = "3.3.2"
diff --git a/service/admin/aria2.go b/service/admin/aria2.go
index 0df3275..b40603b 100644
--- a/service/admin/aria2.go
+++ b/service/admin/aria2.go
@@ -15,9 +15,9 @@ import (
 
 // Aria2TestService aria2连接测试服务
 type Aria2TestService struct {
-	Server string          `json:"server" binding:"required"`
+	Server string          `json:"server"`
 	RPC    string          `json:"rpc" binding:"required"`
-	Secret string          `json:"secret" binding:"required"`
+	Secret string          `json:"secret"`
 	Token  string          `json:"token"`
 	Type   model.ModelType `json:"type"`
 }