diff --git a/internal/db/db_test.go b/internal/db/db_test.go
index 25d92fb7..f13cac9e 100644
--- a/internal/db/db_test.go
+++ b/internal/db/db_test.go
@@ -1,13 +1,44 @@
 package db
 
 import (
+	"database/sql"
+	"database/sql/driver"
+	_ "github.com/go-sql-driver/mysql"
 	"github.com/iwind/TeaGo/Tea"
 	_ "github.com/iwind/TeaGo/bootstrap"
 	"github.com/iwind/TeaGo/dbs"
 	"testing"
+	"time"
 )
 
-func TestDB(t *testing.T) {
+func TestDB_Env(t *testing.T) {
 	Tea.Env = "prod"
 	t.Log(dbs.Default())
 }
+
+func TestDB_Instance(t *testing.T) {
+	for i := 0; i < 10; i++ {
+		db, err := sql.Open("mysql", "root:123456@tcp(127.0.0.1:3306)/db_edge?charset=utf8mb4&timeout=30s")
+		if err != nil {
+			t.Fatal(i, "open:", err)
+		}
+		db.SetConnMaxIdleTime(time.Minute * 3)
+		db.SetConnMaxLifetime(time.Minute * 3)
+		db.SetMaxIdleConns(0)
+		db.SetMaxOpenConns(1)
+		go func(db *sql.DB, i int) {
+			for j := 0; j < 100; j++ {
+				err := db.Ping()
+				if err != nil {
+					if err == driver.ErrBadConn {
+						return
+					}
+					t.Fatal(i, "exec:", err)
+				}
+				time.Sleep(1 * time.Second)
+			}
+			t.Log(i, "ok", db)
+		}(db, i)
+	}
+	time.Sleep(100 * time.Second)
+}
diff --git a/internal/db/models/db_node_initializer.go b/internal/db/models/db_node_initializer.go
index d37110b1..774f5489 100644
--- a/internal/db/models/db_node_initializer.go
+++ b/internal/db/models/db_node_initializer.go
@@ -27,7 +27,7 @@ type HTTPAccessLogDAOWrapper struct {
 
 func init() {
 	initializer := NewDBNodeInitializer()
-	dbs.OnReady(func() {
+	dbs.OnReadyDone(func() {
 		go initializer.Start()
 	})
 }
diff --git a/internal/rpc/services/service_db_node.go b/internal/rpc/services/service_db_node.go
index 644293d6..90205798 100644
--- a/internal/rpc/services/service_db_node.go
+++ b/internal/rpc/services/service_db_node.go
@@ -2,12 +2,18 @@ package services
 
 import (
 	"context"
+	"errors"
 	"github.com/TeaOSLab/EdgeAPI/internal/db/models"
 	rpcutils "github.com/TeaOSLab/EdgeAPI/internal/rpc/utils"
 	"github.com/TeaOSLab/EdgeCommon/pkg/rpc/pb"
+	"github.com/iwind/TeaGo/dbs"
+	"github.com/iwind/TeaGo/lists"
 	"github.com/iwind/TeaGo/types"
+	"strings"
 )
 
+var db *dbs.DB
+
 // 数据库节点相关服务
 type DBNodeService struct {
 	BaseService
@@ -27,7 +33,7 @@ func (this *DBNodeService) CreateDBNode(ctx context.Context, req *pb.CreateDBNod
 	if err != nil {
 		return nil, err
 	}
-	return &pb.CreateDBNodeResponse{NodeId: nodeId}, nil
+	return &pb.CreateDBNodeResponse{DbNodeId: nodeId}, nil
 }
 
 // 修改数据库节点
@@ -40,7 +46,7 @@ func (this *DBNodeService) UpdateDBNode(ctx context.Context, req *pb.UpdateDBNod
 
 	tx := this.NullTx()
 
-	err = models.SharedDBNodeDAO.UpdateNode(tx, req.NodeId, req.IsOn, req.Name, req.Description, req.Host, req.Port, req.Database, req.Username, req.Password, req.Charset)
+	err = models.SharedDBNodeDAO.UpdateNode(tx, req.DbNodeId, req.IsOn, req.Name, req.Description, req.Host, req.Port, req.Database, req.Username, req.Password, req.Charset)
 	if err != nil {
 		return nil, err
 	}
@@ -57,7 +63,7 @@ func (this *DBNodeService) DeleteDBNode(ctx context.Context, req *pb.DeleteDBNod
 
 	tx := this.NullTx()
 
-	err = models.SharedDBNodeDAO.DisableDBNode(tx, req.NodeId)
+	err = models.SharedDBNodeDAO.DisableDBNode(tx, req.DbNodeId)
 	if err != nil {
 		return nil, err
 	}
@@ -98,6 +104,29 @@ func (this *DBNodeService) ListEnabledDBNodes(ctx context.Context, req *pb.ListE
 
 	result := []*pb.DBNode{}
 	for _, node := range nodes {
+		status := &pb.DBNodeStatus{}
+
+		// 是否能够连接
+		if node.IsOn == 1 {
+			db, err = dbs.NewInstanceFromConfig(node.DBConfig())
+			if err != nil {
+				status.Error = err.Error()
+			} else {
+				one, err := db.FindOne("SELECT SUM(DATA_LENGTH+INDEX_LENGTH) AS size FROM information_schema.`TABLES` WHERE TABLE_SCHEMA=?", db.Name())
+				if err != nil {
+					status.Error = err.Error()
+					_ = db.Close()
+				} else if one == nil {
+					status.Error = "unable to read size from database server"
+					_ = db.Close()
+				} else {
+					status.IsOk = true
+					status.Size = one.GetInt64("size")
+					_ = db.Close()
+				}
+			}
+		}
+
 		result = append(result, &pb.DBNode{
 			Id:          int64(node.Id),
 			Name:        node.Name,
@@ -109,9 +138,10 @@ func (this *DBNodeService) ListEnabledDBNodes(ctx context.Context, req *pb.ListE
 			Username:    node.Username,
 			Password:    node.Password,
 			Charset:     node.Charset,
+			Status:      status,
 		})
 	}
-	return &pb.ListEnabledDBNodesResponse{Nodes: result}, nil
+	return &pb.ListEnabledDBNodesResponse{DbNodes: result}, nil
 }
 
 // 根据ID查找可用的数据库节点
@@ -124,14 +154,14 @@ func (this *DBNodeService) FindEnabledDBNode(ctx context.Context, req *pb.FindEn
 
 	tx := this.NullTx()
 
-	node, err := models.SharedDBNodeDAO.FindEnabledDBNode(tx, req.NodeId)
+	node, err := models.SharedDBNodeDAO.FindEnabledDBNode(tx, req.DbNodeId)
 	if err != nil {
 		return nil, err
 	}
 	if node == nil {
-		return &pb.FindEnabledDBNodeResponse{Node: nil}, nil
+		return &pb.FindEnabledDBNodeResponse{DbNode: nil}, nil
 	}
-	return &pb.FindEnabledDBNodeResponse{Node: &pb.DBNode{
+	return &pb.FindEnabledDBNodeResponse{DbNode: &pb.DBNode{
 		Id:          int64(node.Id),
 		Name:        node.Name,
 		Description: node.Description,
@@ -144,3 +174,126 @@ func (this *DBNodeService) FindEnabledDBNode(ctx context.Context, req *pb.FindEn
 		Charset:     node.Charset,
 	}}, nil
 }
+
+// 获取所有表信息
+func (this *DBNodeService) FindAllDBNodeTables(ctx context.Context, req *pb.FindAllDBNodeTablesRequest) (*pb.FindAllDBNodeTablesResponse, error) {
+	_, err := this.ValidateAdmin(ctx, 0)
+	if err != nil {
+		return nil, err
+	}
+
+	var tx = this.NullTx()
+	node, err := models.SharedDBNodeDAO.FindEnabledDBNode(tx, req.DbNodeId)
+	if err != nil {
+		return nil, err
+	}
+	if node == nil {
+		return nil, dbs.ErrNotFound
+	}
+	db, err := dbs.NewInstanceFromConfig(node.DBConfig())
+	if err != nil {
+		return nil, err
+	}
+	defer func() {
+		_ = db.Close()
+	}()
+
+	ones, _, err := db.FindOnes("SELECT * FROM information_schema.`TABLES` WHERE TABLE_SCHEMA=?", db.Name())
+	if err != nil {
+		return nil, err
+	}
+	pbTables := []*pb.DBTable{}
+	for _, one := range ones {
+		lowerTableName := strings.ToLower(one.GetString("TABLE_NAME"))
+		canDelete := false
+		canClean := false
+		if strings.HasPrefix(lowerTableName, "edgehttpaccesslogs_") {
+			canDelete = true
+			canClean = true
+		} else if lists.ContainsString([]string{"edgemessages", "edgelogs", "edgenodelogs"}, lowerTableName) {
+			canClean = true
+		}
+
+		pbTables = append(pbTables, &pb.DBTable{
+			Name:        one.GetString("TABLE_NAME"),
+			Schema:      one.GetString("TABLE_SCHEMA"),
+			Type:        one.GetString("TABLE_TYPE"),
+			Engine:      one.GetString("ENGINE"),
+			Rows:        one.GetInt64("TABLE_ROWS"),
+			DataLength:  one.GetInt64("DATA_LENGTH"),
+			IndexLength: one.GetInt64("INDEX_LENGTH"),
+			Comment:     one.GetString("TABLE_COMMENT"),
+			Collation:   one.GetString("TABLE_COLLATION"),
+			IsBaseTable: one.GetString("TABLE_TYPE") == "BASE TABLE",
+			CanClean:    canClean,
+			CanDelete:   canDelete,
+		})
+	}
+
+	return &pb.FindAllDBNodeTablesResponse{DbNodeTables: pbTables}, nil
+}
+
+// 删除表
+func (this *DBNodeService) DeleteDBNodeTable(ctx context.Context, req *pb.DeleteDBNodeTableRequest) (*pb.RPCSuccess, error) {
+	_, err := this.ValidateAdmin(ctx, 0)
+	if err != nil {
+		return nil, err
+	}
+
+	var tx = this.NullTx()
+	node, err := models.SharedDBNodeDAO.FindEnabledDBNode(tx, req.DbNodeId)
+	if err != nil {
+		return nil, err
+	}
+	if node == nil {
+		return nil, dbs.ErrNotFound
+	}
+	db, err := dbs.NewInstanceFromConfig(node.DBConfig())
+	if err != nil {
+		return nil, err
+	}
+	defer func() {
+		_ = db.Close()
+	}()
+
+	// 检查是否能够删除
+	if !strings.HasPrefix(strings.ToLower(req.DbNodeTable), "edgehttpaccesslogs_") {
+		return nil, errors.New("forbidden to delete the table")
+	}
+
+	_, err = db.Exec("DROP TABLE `" + req.DbNodeTable + "`")
+	if err != nil {
+		return nil, err
+	}
+	return this.Success()
+}
+
+// 清空表
+func (this *DBNodeService) TruncateDBNodeTable(ctx context.Context, req *pb.TruncateDBNodeTableRequest) (*pb.RPCSuccess, error) {
+	_, err := this.ValidateAdmin(ctx, 0)
+	if err != nil {
+		return nil, err
+	}
+
+	var tx = this.NullTx()
+	node, err := models.SharedDBNodeDAO.FindEnabledDBNode(tx, req.DbNodeId)
+	if err != nil {
+		return nil, err
+	}
+	if node == nil {
+		return nil, dbs.ErrNotFound
+	}
+	db, err := dbs.NewInstanceFromConfig(node.DBConfig())
+	if err != nil {
+		return nil, err
+	}
+	defer func() {
+		_ = db.Close()
+	}()
+
+	_, err = db.Exec("TRUNCATE TABLE `" + req.DbNodeTable + "`")
+	if err != nil {
+		return nil, err
+	}
+	return this.Success()
+}