diff --git a/build/builder/build-pysrt.py b/build/builder/build-pysrt.py
index 6ac7df0..34a0df0 100644
--- a/build/builder/build-pysrt.py
+++ b/build/builder/build-pysrt.py
@@ -171,7 +171,7 @@ class PYSBaseWin(PYSBase):
         super()._copy_modules()
 
     def _make_py_ver_file(self):
-        # 在python.zip尾部追加一个字符串（补零到64字节），指明python动态库的文件名，这样壳在加载时才知道如何加载python动态库
+        # 指明python动态库的文件名，这样壳在加载时才知道如何加载python动态库
         out_file = os.path.join(self.base_path, 'python.ver')
         _data = struct.pack('=64s', self._get_py_dll_name().encode())
         f = open(out_file, 'wb')
@@ -179,7 +179,6 @@ class PYSBaseWin(PYSBase):
         f.close()
 
     def _get_py_dll_name(self):
-        #return 'python{}{}.dll'.format(PY_VER[0], PY_VER[1])
         return 'python{}.dll'.format(env.py_ver_str)
 
 
diff --git a/common/libex/src/ex_ini.cpp b/common/libex/src/ex_ini.cpp
index ed284c2..71ac593 100644
--- a/common/libex/src/ex_ini.cpp
+++ b/common/libex/src/ex_ini.cpp
@@ -374,8 +374,6 @@ ExIniSection* ExIniFile::GetSection(const ex_wstr& strName, bool bCreateIfNotExi
 	if (!bCreateIfNotExists)
 		return NULL;
 
-
-
 	ExIniSection* pSec = new ExIniSection(strName);
 	m_secs.insert(std::make_pair(strName, pSec));
 	return pSec;
diff --git a/server/tp_core/core/ts_http_rpc.cpp b/server/tp_core/core/ts_http_rpc.cpp
index 00715a6..1211141 100644
--- a/server/tp_core/core/ts_http_rpc.cpp
+++ b/server/tp_core/core/ts_http_rpc.cpp
@@ -4,8 +4,6 @@
 #include "ts_crypto.h"
 #include "ts_web_rpc.h"
 
-//#include <sqlite3.h>
-
 
 #define HEXTOI(x) (isdigit(x) ? x - '0' : x - 'W')
 int ts_url_decode(const char *src, int src_len, char *dst, int dst_len, int is_form_url_encoded)
@@ -130,7 +128,7 @@ void TsHttpRpc::_mg_event_handler(struct mg_connection *nc, int ev, void *ev_dat
 		ex_astr uri;
 		uri.assign(hm->uri.p, hm->uri.len);
 
-		EXLOGV("got request: %s\n", uri.c_str());
+		EXLOGD("got request: %s\n", uri.c_str());
 
 		if (uri == "/rpc")
 		{
@@ -145,7 +143,7 @@ void TsHttpRpc::_mg_event_handler(struct mg_connection *nc, int ev, void *ev_dat
 			}
 			else
 			{
-				EXLOGV("[core-rpc] got request method `%s`\n", method.c_str());
+				EXLOGD("[core-rpc] got request method `%s`\n", method.c_str());
 				_this->_process_request(method, json_param, ret_buf);
 			}
 		}
@@ -198,8 +196,6 @@ ex_rv TsHttpRpc::_parse_request(struct http_message* req, ex_astr& func_cmd, Jso
 
 	json_str = &sztmp[0];
 
-
-
 	Json::Reader jreader;
 
 	if (!jreader.parse(json_str.c_str(), json_param))
@@ -289,6 +285,10 @@ void TsHttpRpc::_rpc_func_get_config(const Json::Value& json_param, ex_astr& buf
 {
 	Json::Value jr_data;
 
+	ex_astr _replay_name;
+	ex_wstr2astr(g_env.m_replay_path, _replay_name);
+	jr_data["replay-path"] = _replay_name;
+
 	ExIniFile& ini = g_env.get_ini();
 	ex_ini_sections& secs = ini.GetAllSections();
 	ex_ini_sections::iterator it = secs.begin();
diff --git a/server/www/teleport/app/eom_app/app/configs.py b/server/www/teleport/app/eom_app/app/configs.py
index d3e2e2e..b646d93 100644
--- a/server/www/teleport/app/eom_app/app/configs.py
+++ b/server/www/teleport/app/eom_app/app/configs.py
@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
 
-import os
 import configparser
+import os
 
 from eom_common.eomcore.logger import *
 
@@ -17,8 +17,7 @@ class AttrDict(dict):
         try:
             return self[name]
         except KeyError:
-            # print(self.__class__.__name__)
-            raise
+            return None
 
     def __setattr__(self, name, val):
         self[name] = val
@@ -39,7 +38,7 @@ class ConfigFile(AttrDict):
         self['core']['telnet']['enable'] = False
         self['core']['telnet']['port'] = 52389
 
-    def load_web(self, cfg_file):
+    def load(self, cfg_file):
         if not os.path.exists(cfg_file):
             log.e('configuration file does not exists: [{}]\n'.format(cfg_file))
             return False
@@ -90,6 +89,7 @@ class ConfigFile(AttrDict):
     def update_core(self, conf_data):
         try:
             self['core'] = AttrDict()
+
             self['core']['ssh'] = AttrDict()
             self['core']['ssh']['enable'] = False
             self['core']['ssh']['port'] = 52189
@@ -110,6 +110,9 @@ class ConfigFile(AttrDict):
             if 'telnet' in conf_data:
                 self['core']['telnet']['enable'] = conf_data['telnet']['enable']
                 self['core']['telnet']['port'] = conf_data['telnet']['port']
+
+            self['core']['replay_path'] = conf_data['replay-path']
+
         except IndexError:
             log.e('invalid core config.\n')
             return False
diff --git a/server/www/teleport/app/eom_app/app/core.py b/server/www/teleport/app/eom_app/app/core.py
index 2db5408..70dc0b8 100644
--- a/server/www/teleport/app/eom_app/app/core.py
+++ b/server/www/teleport/app/eom_app/app/core.py
@@ -1,23 +1,19 @@
 # -*- coding: utf-8 -*-
 
-import os
-# import sys
 import json
+import os
 import urllib.parse
 import urllib.request
 
+import eom_common.eomcore.utils as utils
 import tornado.httpserver
 import tornado.ioloop
 import tornado.netutil
 import tornado.process
 import tornado.web
-
-# from eom_common.eomcore.eom_mysql import get_mysql_pool
-from eom_common.eomcore.eom_sqlite import get_sqlite_pool
-import eom_common.eomcore.utils as utils
 from eom_common.eomcore.logger import log
-from .const import *
 from .configs import app_cfg
+from .const import *
 from .db import get_db
 from .session import web_session
 
@@ -39,7 +35,7 @@ class WebServerCore:
         cfg.cfg_path = os.path.abspath(options['cfg_path'])
 
         _cfg_file = os.path.join(cfg.cfg_path, 'web.ini')
-        if not cfg.load_web(_cfg_file):
+        if not cfg.load(_cfg_file):
             return False
 
         cfg.log_path = os.path.abspath(options['log_path'])
@@ -61,12 +57,7 @@ class WebServerCore:
         if not web_session().init():
             return False
 
-        # TODO: 这里不要初始化数据库接口，需要根据配置文件来决定使用什么数据库（初始安装时还没有配置数据库信息）
-        # get_mysql_pool().init(cfg.mysql_ip, cfg.mysql_port, cfg.mysql_user, cfg.mysql_pass)
-        # db_path = os.path.join(cfg.data_path, 'ts_db.db')
-        get_sqlite_pool().init(cfg.data_path)
-
-        # get_db().init_sqlite(os.path.join(cfg.data_path, 'ts_db.db'))
+        # TODO: 根据配置文件来决定使用什么数据库（初始安装时还没有配置数据库信息）
         _db = get_db()
         if not _db.init({'type': _db.DB_TYPE_SQLITE, 'file': os.path.join(cfg.data_path, 'ts_db.db')}):
             log.e('initialize database interface failed.\n')
@@ -111,17 +102,13 @@ class WebServerCore:
             'autoescape': 'xhtml_escape',
 
             # 'ui_modules': ui_modules,
-            # 'debug': True,
+            'debug': False,
 
-            # Debug Mode.
-            'compiled_template_cache': True,
-            'static_hash_cache': True,
+            # 不开启模板和静态文件的缓存，这样一旦模板文件和静态文件变化，刷新浏览器即可看到更新。
+            'compiled_template_cache': False,
+            'static_hash_cache': False,
         }
 
-        if cfg.debug:
-            settings['compiled_template_cache'] = False
-            settings['static_hash_cache'] = False
-
         from eom_app.controller import controllers
         web_app = tornado.web.Application(controllers, **settings)
 
diff --git a/server/www/teleport/app/eom_app/app/database/upgrade.py b/server/www/teleport/app/eom_app/app/database/upgrade.py
index b75c317..3db90e6 100644
--- a/server/www/teleport/app/eom_app/app/database/upgrade.py
+++ b/server/www/teleport/app/eom_app/app/database/upgrade.py
@@ -1,7 +1,8 @@
 # -*- coding: utf-8 -*-
+
+import json
 import os
 import shutil
-import json
 
 from eom_common.eomcore.logger import log
 
@@ -75,7 +76,6 @@ class DatabaseUpgrade:
                     return False
 
             # 移除旧的表（暂时改名而不是真的删除）
-            # str_sql = 'ALTER TABLE ts_sys_user RENAME TO _bak_ts_sys_user;'
             _step = self.step_begin(' - 移除不再使用的数据表...')
             if not self.db.exec('ALTER TABLE `{}sys_user` RENAME TO `_bak_ts_sys_user`;'.format(self.db.table_prefix)):
                 self.step_end(_step, 0)
@@ -108,10 +108,6 @@ class DatabaseUpgrade:
                 return True
             self.step_end(_step, 0, '需要升级到v3')
 
-            # log.v('upgrade database to version 1.5.217.9 ...\n')
-            # bak_file = '{}.before-1.5.217.9'.format(db_file)
-            # if not os.path.exists(bak_file):
-            #     shutil.copy(db_file, bak_file)
             if self.db.db_source['type'] == self.db.DB_TYPE_SQLITE:
                 _step = self.step_begin(' - 备份数据库文件')
                 _bak_file = '{}.before-v2-to-v3'.format(self.db.db_source['file'])
@@ -340,12 +336,7 @@ class DatabaseUpgrade:
                 if host_info_alt is not None:
                     new_host_info.append(host_info_alt)
 
-            # print('=====================================')
-            # for i in range(len(new_host_info)):
-            #     print(new_host_info[i])
-
             # 现在有了新的ts_host_info表，重构ts_auth_info表
-            # 'SELECT id, host_id, pro_type, auth_mode, user_name, user_pswd, cert_id, encrypt, log_time FROM ts_auth_info;'
             if auth_info_ret is not None:
                 for i in range(len(auth_info_ret)):
                     auth_info = {}
@@ -367,9 +358,6 @@ class DatabaseUpgrade:
                     if found:
                         new_auth_info.append(auth_info)
 
-            # for i in range(len(new_auth_info)):
-            #     print(new_auth_info[i])
-
             # 最后重构ts_auth表
             if auth_ret is not None:
                 for i in range(len(auth_ret)):
@@ -386,9 +374,6 @@ class DatabaseUpgrade:
                     if found:
                         new_auth.append(auth)
 
-            # for i in range(len(new_auth)):
-            #     print(new_auth[i])
-
             self.step_end(_step, 0)
             _step = self.step_begin(' - 重新整理认证数据表结构及数据...')
 
@@ -450,7 +435,6 @@ class DatabaseUpgrade:
                     new_auth_info[i]['user_name'], new_auth_info[i]['user_pswd'], new_auth_info[i]['user_param'],
                     new_auth_info[i]['cert_id'], new_auth_info[i]['encrypt'], '1'
                 )
-                # print(str_sql)
                 if not self.db.exec(sql):
                     self.step_end(_step, -1, '无法调整数据(2)')
                     return False
@@ -542,5 +526,3 @@ class DatabaseUpgrade:
             log.e('failed.\n')
             self.step_end(_step, -1)
             return False
-
-
diff --git a/server/www/teleport/app/eom_app/app/db.py b/server/www/teleport/app/eom_app/app/db.py
index 7e0f7e7..19530f4 100644
--- a/server/www/teleport/app/eom_app/app/db.py
+++ b/server/www/teleport/app/eom_app/app/db.py
@@ -1,20 +1,16 @@
 # -*- coding: utf-8 -*-
 
-import builtins
 import os
 import sqlite3
 import threading
-import datetime
+
+import builtins
 
 from eom_common.eomcore import utils
 from eom_common.eomcore.logger import log
-from eom_common.eomcore import utils
-# from .configs import app_cfg
 from .database.create import create_and_init
 from .database.upgrade import DatabaseUpgrade
 
-# cfg = app_cfg()
-
 __all__ = ['get_db', 'DbItem']
 
 
@@ -63,14 +59,12 @@ class TPDatabase:
         # 看看数据库中是否存在指定的数据表（如果不存在，可能是一个空数据库文件），则可能是一个新安装的系统
         ret = self.is_table_exists('{}group'.format(self._table_prefix))
         if ret is None or not ret:
-            # if ret is None or ret[0][0] == 0:
             log.w('database need create.\n')
             self.need_create = True
             return True
 
         # 尝试从配置表中读取当前数据库版本号（如果不存在，说明是比较旧的版本了）
         ret = self.query('SELECT `value` FROM `{}config` WHERE `name`="db_ver";'.format(self._table_prefix))
-        # log.w(ret)
         if ret is None or 0 == len(ret):
             self.current_ver = 1
         else:
@@ -124,6 +118,8 @@ class TPDatabase:
         return ret
 
     def create_and_init(self, step_begin, step_end):
+        log.v('start database create and initialization process.\n')
+
         if self.db_source['type'] == self.DB_TYPE_SQLITE:
             db_path = os.path.dirname(self.db_source['file'])
             if not os.path.exists(db_path):
@@ -133,17 +129,21 @@ class TPDatabase:
                     return False
 
         if create_and_init(self, step_begin, step_end):
+            log.v('database created.\n')
             self.need_create = False
             return True
         else:
+            log.e('database create and initialize failed.\n')
             return False
 
     def upgrade_database(self, step_begin, step_end):
+        log.v('start database upgrade process.\n')
         if DatabaseUpgrade(self, step_begin, step_end).do_upgrade():
-            # if upgrade_database(self, step_begin, step_end):
+            log.v('database upgraded.\n')
             self.need_upgrade = False
             return True
         else:
+            log.e('database upgrade failed.\n')
             return False
 
     def alter_table(self, table_names, field_names=None):
diff --git a/server/www/teleport/app/eom_app/controller/__init__.py b/server/www/teleport/app/eom_app/controller/__init__.py
index 700bc16..7819a5c 100644
--- a/server/www/teleport/app/eom_app/controller/__init__.py
+++ b/server/www/teleport/app/eom_app/controller/__init__.py
@@ -51,7 +51,10 @@ controllers = [
     (r'/user/list', user.GetListHandler),
 
     # add another path to static-path
+
+    # todo: 重放数据路径是动态从core服务的json-rpc接口获取的，因此这里的数据获取方式需要改变
     (r"/log/replay/(.*)", tornado.web.StaticFileHandler, {"path": os.path.join(cfg.data_path, 'replay')}),
+
     (r'/log/list', record.LogList),
     (r'/log/record/(.*)/(.*)', record.RecordHandler),
     (r'/log/command-log/(.*)/(.*)', record.ComandLogHandler),
diff --git a/server/www/teleport/app/eom_app/controller/record.py b/server/www/teleport/app/eom_app/controller/record.py
index eff2088..ad39ecc 100644
--- a/server/www/teleport/app/eom_app/controller/record.py
+++ b/server/www/teleport/app/eom_app/controller/record.py
@@ -6,13 +6,10 @@ import os
 import platform
 
 from eom_app.app.configs import app_cfg
-# from eom_app.module import host
 from eom_app.module import record
 from eom_app.module import user
 from .base import TPBaseAdminAuthHandler, TPBaseAdminAuthJsonHandler
 
-cfg = app_cfg()
-
 
 def get_free_space_bytes(folder):
     """ Return folder/drive free space (in bytes)
@@ -33,16 +30,14 @@ def get_free_space_bytes(folder):
 
 class LogHandler(TPBaseAdminAuthHandler):
     def get(self):
-        total_size, free_size = get_free_space_bytes(cfg.data_path)
+        total_size, free_size = get_free_space_bytes(app_cfg().data_path)
 
-        # ts_server = '""'
         param = {
             'user_list': user.get_user_list(with_admin=True),
             'total_size': total_size,
             'free_size': free_size,
         }
 
-        # self.render('log/index.mako', user_list=user_list, total_size=total_size, free_size=free_size, ts_server=ts_server)
         self.render('log/index.mako', page_param=json.dumps(param))
 
 
@@ -64,7 +59,7 @@ class RecordHandler(TPBaseAdminAuthHandler):
 #         #     self.render('log/record.mako', record_id=record_id)
 #         #     return
 #         # pass
-#         filename = os.path.join(cfg.data_path, 'replay', 'rdp', '{}'.format(record_id), 'tp-rdp.tpr')
+#         filename = os.path.join(cfg.core.replay_path, 'replay', 'rdp', '{}'.format(record_id), 'tp-rdp.tpr')
 
 
 class ComandLogHandler(TPBaseAdminAuthHandler):
@@ -78,7 +73,7 @@ class ComandLogHandler(TPBaseAdminAuthHandler):
         if protocol == 1:
             pass
         elif protocol == 2:
-            record_path = os.path.join(cfg.data_path, 'replay', 'ssh', '{:06d}'.format(int(record_id)))
+            record_path = os.path.join(app_cfg().core.replay_path, 'ssh', '{:06d}'.format(int(record_id)))
             file_info = os.path.join(record_path, 'tp-ssh-cmd.txt')
             try:
                 file = open(file_info, 'r')
@@ -101,12 +96,9 @@ class RecordGetHeader(TPBaseAdminAuthJsonHandler):
         header = record.read_record_head(record_id)
         if header is None:
             return self.write_json(-1)
-        # term = record.read_record_term(record_id)
-        # if term is None:
-        #     return self.write_json(-1)
+
         ret = dict()
         ret['header'] = header
-        # ret['term'] = term
         self.write_json(0, data=ret)
 
 
diff --git a/server/www/teleport/app/eom_app/controller/rpc.py b/server/www/teleport/app/eom_app/controller/rpc.py
index 9bc2497..caf64b1 100644
--- a/server/www/teleport/app/eom_app/controller/rpc.py
+++ b/server/www/teleport/app/eom_app/controller/rpc.py
@@ -1,19 +1,16 @@
 # -*- coding: utf-8 -*-
 
-import tornado.gen
-
 import json
 import urllib.parse
-from eom_app.app.session import web_session
+
+import tornado.gen
 from eom_app.app.configs import app_cfg
+from eom_app.app.session import web_session
 from eom_app.app.util import async_post_http
 from eom_app.module import host, record
 from eom_common.eomcore.logger import *
-
 from .base import TPBaseJsonHandler
 
-cfg = app_cfg()
-
 
 class RpcHandler(TPBaseJsonHandler):
     @tornado.gen.coroutine
@@ -27,7 +24,6 @@ class RpcHandler(TPBaseJsonHandler):
 
     @tornado.gen.coroutine
     def post(self):
-        # curl -X POST --data '{"method":"get_auth_info","param":{"authid":0}}' http://127.0.0.1:7190/rpc
         req = self.request.body.decode('utf-8')
         if req == '':
             self.write_json(-1, message='need request param.')
@@ -43,7 +39,6 @@ class RpcHandler(TPBaseJsonHandler):
             if 'method' not in _req or 'param' not in _req:
                 self.write_json(-1, message='invalid request format.')
                 return
-
         except:
             self.write_json(-1, message='invalid json format.')
             return
@@ -120,8 +115,10 @@ class RpcHandler(TPBaseJsonHandler):
 
         if 'rpc' not in param:
             return self.write_json(-1)
-        cfg.core_server_rpc = param['rpc']
 
+        app_cfg().core_server_rpc = param['rpc']
+
+        # 获取core服务的配置信息
         req = {'method': 'get_config', 'param': []}
         _yr = async_post_http(req)
         return_data = yield _yr
@@ -132,7 +129,7 @@ class RpcHandler(TPBaseJsonHandler):
         if return_data['code'] != 0:
             return self.write_json(return_data['code'])
 
-        cfg.update_core(return_data['data'])
+        app_cfg().update_core(return_data['data'])
 
         self.write_json(0)
 
diff --git a/server/www/teleport/app/eom_app/module/record.py b/server/www/teleport/app/eom_app/module/record.py
index a6de3f4..c249135 100644
--- a/server/www/teleport/app/eom_app/module/record.py
+++ b/server/www/teleport/app/eom_app/module/record.py
@@ -11,7 +11,7 @@ from eom_common.eomcore.utils import timestamp_utc_now
 
 
 def read_record_head(record_id):
-    record_path = os.path.join(app_cfg().data_path, 'replay', 'ssh', '{:06d}'.format(int(record_id)))
+    record_path = os.path.join(app_cfg().core.replay_path, 'ssh', '{:06d}'.format(int(record_id)))
     header_file_path = os.path.join(record_path, 'tp-ssh.tpr')
     file = None
     try:
@@ -58,7 +58,7 @@ def read_record_head(record_id):
 
 
 # def read_record_term(record_id):
-#     record_path = os.path.join(cfg.data_path, 'replay', 'ssh', '{}'.format(record_id))
+#     record_path = os.path.join(cfg.core.replay_path, 'ssh', '{}'.format(record_id))
 #     term_file_path = os.path.join(record_path, 'term.init')
 #     # term_file_path = r"E:\GitWork\teleport\share\data\replay\ssh\103\term.init"
 #
@@ -126,7 +126,7 @@ def read_record_head(record_id):
 
 
 def read_record_info(record_id, file_id):
-    record_path = os.path.join(app_cfg().data_path, 'replay', 'ssh', '{:06d}'.format(int(record_id)))
+    record_path = os.path.join(app_cfg().core.replay_path, 'ssh', '{:06d}'.format(int(record_id)))
     file_info = os.path.join(record_path, 'tp-ssh.{:03d}'.format(int(file_id)))
     file = None
     try:
@@ -196,13 +196,14 @@ def delete_log(log_list):
         if not ret:
             return False
 
+        # TODO: 此处应该通过json-rpc接口通知core服务来删除重放文件。
         for item in log_list:
             log_id = int(item)
             try:
-                record_path = os.path.join(app_cfg().data_path, 'replay', 'ssh', '{:06d}'.format(log_id))
+                record_path = os.path.join(app_cfg().core.replay_path, 'ssh', '{:06d}'.format(log_id))
                 if os.path.exists(record_path):
                     shutil.rmtree(record_path)
-                record_path = os.path.join(app_cfg().data_path, 'replay', 'rdp', '{:06d}'.format(log_id))
+                record_path = os.path.join(app_cfg().core.replay_path, 'rdp', '{:06d}'.format(log_id))
                 if os.path.exists(record_path):
                     shutil.rmtree(record_path)
             except Exception:
diff --git a/server/www/teleport/app/eom_app/module/user.py b/server/www/teleport/app/eom_app/module/user.py
index 51c8705..3c6c27a 100644
--- a/server/www/teleport/app/eom_app/module/user.py
+++ b/server/www/teleport/app/eom_app/module/user.py
@@ -1,13 +1,11 @@
 # -*- coding: utf-8 -*-
 
 import hashlib
-from eom_app.app.const import *
+
 from eom_app.app.configs import app_cfg
+from eom_app.app.const import *
 from eom_app.app.db import get_db, DbItem
 from eom_app.app.util import sec_generate_password, sec_verify_password
-# from eom_common.eomcore.logger import log
-
-# from .common import *
 
 
 def verify_user(name, password):
diff --git a/server/www/teleport/app/eom_upgrade.py b/server/www/teleport/app/eom_upgrade.py
deleted file mode 100644
index 3fb365a..0000000
--- a/server/www/teleport/app/eom_upgrade.py
+++ /dev/null
@@ -1,617 +0,0 @@
-# -*- coding: utf-8 -*-
-
-import json
-import os
-import shutil
-import sys
-
-from eom_env import *
-from eom_common.eomcore.eom_sqlite import get_sqlite_pool
-from eom_common.eomcore.logger import *
-
-log.set_attribute(min_level=LOG_DEBUG, log_datetime=False, trace_error=log.TRACE_ERROR_FULL)
-
-db_file = os.path.join(PATH_DATA, 'ts_db.db')
-
-
-def main():
-    if not os.path.exists(db_file):
-        log.v('\n')
-        log.v('Teleport Server Database Creation\n')
-
-        # 如果数据库文件尚未存在，则直接创建之
-        get_sqlite_pool().init(PATH_DATA)
-
-        if not create_base_db():
-            return 1
-
-    else:
-        log.v('\n')
-        log.v('Teleport Server Upgrade\n')
-
-        if not get_sqlite_pool().init(PATH_DATA):
-            log.e('upgrade failed.\n')
-            return 1
-
-        if not upgrade_to_1_2_102_3():
-            log.e('failed to upgrade database to version 1.2.102.3 ...\n')
-            return 1
-        if not upgrade_to_1_5_217_9():
-            log.e('failed to upgrade database to version 1.5.217.9 ...\n')
-            return 1
-
-        if not upgrade_to_1_6_224_3():
-            log.e('failed to upgrade database to version 1.6.224.3 ...\n')
-            return 1
-
-    return 0
-
-
-def create_base_db():
-    try:
-        # f = open(db_file, 'w')
-        # f.close()
-        sql_file = os.path.join(PATH_DATA, 'main.sql')
-        if not os.path.exists(sql_file):
-            log.e("sql file not exists.\n")
-            return False
-
-        f = open(sql_file, 'r', encoding='utf-8')
-        sql = f.read()
-        f.close()
-        sql_con = get_sqlite_pool().get_tssqlcon()
-        sql_con.ExecManyProcNonQuery(sql)
-
-    except Exception:
-        return False
-
-    return True
-
-
-def upgrade_to_1_2_102_3():
-    # 服务端升级到版本1.2.102.3时，管理员后台和普通用户后台合并了，数据库略有调整
-    try:
-        sql_con = get_sqlite_pool().get_tssqlcon()
-
-        # 如果存在名为 ts_sys_user 的表，说明是旧版本，需要升级
-        str_sql = 'SELECT COUNT(*) FROM sqlite_master where type="table" and name="ts_sys_user";'
-        db_ret = sql_con.ExecProcQuery(str_sql)
-        if (db_ret[0][0] == 0):
-            return True
-
-        log.v('upgrade database to version 1.2.102.3 ...\n')
-        bak_file = '{}.before-1.2.102.3'.format(db_file)
-        if not os.path.exists(bak_file):
-            shutil.copy(db_file, bak_file)
-
-        # 将原来的普通用户的account_type从 0 改为 1
-        str_sql = 'UPDATE ts_account SET account_type=1 WHERE account_type=0;'
-        sql_con.ExecProcNonQuery(str_sql)
-
-        # 将原来的管理员合并到用户账号表中
-        str_sql = 'SELECT * FROM ts_sys_user;'
-        db_ret = sql_con.ExecProcQuery(str_sql)
-        if db_ret is None:
-            return True
-
-        for i in range(len(db_ret)):
-            user_name = db_ret[i][1]
-            user_pwd = db_ret[i][2]
-            str_sql = 'INSERT INTO ts_account (account_type, account_name, account_pwd, account_status, ' \
-                      'account_lock, account_desc) VALUES (100,"{}","{}",0,0,"{}");'.format(user_name, user_pwd, '超级管理员')
-            ret = sql_con.ExecProcNonQuery(str_sql)
-            if not ret:
-                log.e('can not found super admin account.\n')
-                return False
-
-        # 移除旧的表（暂时改名而不是真的删除）
-        str_sql = 'ALTER TABLE ts_sys_user RENAME TO _bak_ts_sys_user;'
-        ret = sql_con.ExecProcNonQuery(str_sql)
-        if not ret:
-            log.e('can not rename table `ts_sys_user`.\n')
-            return False
-
-    except:
-        return False
-
-    return True
-
-
-def upgrade_to_1_5_217_9():
-    # 服务端升级到版本1.5.217.9时，为了支持一机多用户多协议，数据库结构有较大程度改动
-    try:
-        sql_con = get_sqlite_pool().get_tssqlcon()
-
-        # 如果不存在名为 ts_host_info 的表，说明是旧版本，需要升级
-        str_sql = 'SELECT COUNT(*) FROM sqlite_master where type="table" and name="ts_host_info";'
-        db_ret = sql_con.ExecProcQuery(str_sql)
-        if (db_ret[0][0] == 1):
-            return True
-
-        log.v('upgrade database to version 1.5.217.9 ...\n')
-        bak_file = '{}.before-1.5.217.9'.format(db_file)
-        if not os.path.exists(bak_file):
-            shutil.copy(db_file, bak_file)
-
-        # 将原来的 ts_auth 表中增加一个字段
-        str_sql = 'ALTER TABLE ts_auth ADD host_auth_id INTEGER;'
-        ret = sql_con.ExecProcNonQuery(str_sql)
-        if not ret:
-            log.e('can not modify table `ts_auth`.\n')
-            return False
-
-        # 为新增字段进行赋值
-        str_sql = 'UPDATE ts_auth SET host_auth_id=host_id;'
-        ret = sql_con.ExecProcNonQuery(str_sql)
-        # print(ret)
-        if not ret:
-            log.e('can not update table `ts_auth`.\n')
-            return False
-
-        # 新建两个表，用于拆分原来的 ts_host 表
-        str_sql = '''CREATE TABLE "ts_host_info" (
-"host_id"  integer PRIMARY KEY AUTOINCREMENT,
-"group_id"  int(11) DEFAULT 0,
-"host_sys_type"  int(11) DEFAULT 1,
-"host_ip"  varchar(32) DEFAULT '',
-"pro_port"  varchar(256) NULL,
-"host_lock"  int(11) DEFAULT 0,
-"host_desc" varchar(128) DEFAULT ''
-);'''
-
-        ret = sql_con.ExecProcNonQuery(str_sql)
-        if not ret:
-            log.e('can not create table `ts_host_info`.\n')
-            return False
-
-        str_sql = '''CREATE TABLE "ts_auth_info" (
-"id"  INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
-"host_id"  INTEGER,
-"pro_type"  INTEGER,
-"auth_mode"  INTEGER,
-"user_name"  varchar(256),
-"user_pswd"  varchar(256),
-"cert_id"  INTEGER,
-"encrypt"  INTEGER,
-"log_time"  varchar(60)
-);'''
-
-        ret = sql_con.ExecProcNonQuery(str_sql)
-        if not ret:
-            log.e('can not create table `ts_auth_info`.\n')
-            return False
-
-        # 将原来的 ts_host 表改名
-        str_sql = 'ALTER TABLE ts_host RENAME TO _bak_ts_host;'
-        ret = sql_con.ExecProcNonQuery(str_sql)
-        if not ret:
-            log.e('can not rename table `ts_host`.\n')
-            return False
-
-        # 从原来 ts_host 表中查询出所有数据
-        str_sql = 'SELECT * FROM _bak_ts_host;'
-        db_ret = sql_con.ExecProcQuery(str_sql)
-        if db_ret is not None:
-            for i in range(len(db_ret)):
-                host_id = db_ret[i][0]
-                group_id = db_ret[i][1]
-                host_sys_type = db_ret[i][2]
-                host_ip = db_ret[i][3]
-                host_pro_port = db_ret[i][4]
-                host_user_name = db_ret[i][5]
-                host_user_pwd = db_ret[i][6]
-                host_pro_type = db_ret[i][7]
-                cert_id = db_ret[i][8]
-                host_lock = db_ret[i][9]
-                host_encrypt = db_ret[i][10]
-                host_auth_mode = db_ret[i][11]
-                host_desc = db_ret[i][12]
-
-                _pro_port = {}
-                _pro_port['ssh'] = {}
-                _pro_port['ssh']['enable'] = 0
-                _pro_port['ssh']['port'] = 22
-                _pro_port['rdp'] = {}
-                _pro_port['rdp']['enable'] = 0
-                _pro_port['rdp']['port'] = 3389
-
-                if (host_pro_type == 1):
-                    _pro_port['rdp']['enable'] = 1
-                    _pro_port['rdp']['port'] = host_pro_port
-                elif (host_pro_type == 2):
-                    _pro_port['ssh']['enable'] = 1
-                    _pro_port['ssh']['port'] = host_pro_port
-                pro_port = json.dumps(_pro_port)
-
-                str_sql = 'INSERT INTO ts_host_info (host_id, group_id, host_sys_type, host_ip, pro_port, host_lock, host_desc) ' \
-                          'VALUES ({}, {}, {}, \'{}\', \'{}\', {}, \'{}\');'.format(host_id, group_id, host_sys_type, host_ip, pro_port, host_lock, host_desc)
-                # print(str_sql)
-                ret = sql_con.ExecProcNonQuery(str_sql)
-                if not ret:
-                    log.e('can not insert item into `ts_host_info`.\n')
-                    return False
-
-                str_sql = 'INSERT INTO ts_auth_info (host_id, pro_type, auth_mode, user_name, user_pswd, cert_id, encrypt, log_time) ' \
-                          'VALUES ({}, {}, {}, \'{}\', \'{}\', {}, {}, \'{}\');'.format(host_id, host_pro_type, host_auth_mode, host_user_name, host_user_pwd, cert_id, host_encrypt, '1')
-                # print(str_sql)
-                ret = sql_con.ExecProcNonQuery(str_sql)
-                if not ret:
-                    log.e('can not insert item into `ts_auth_info`.\n')
-                    return False
-
-        str_sql = 'ALTER TABLE ts_log add protocol INTEGER;'
-        # print(str_sql)
-        ret = sql_con.ExecProcNonQuery(str_sql)
-        if not ret:
-            log.e('can not upgrade database table `ts_log`.\n')
-            return False
-
-        str_sql = 'UPDATE ts_log SET protocol=1 WHERE sys_type=1;'
-        ret = sql_con.ExecProcNonQuery(str_sql)
-        if not ret:
-            log.e('can not fix database table `ts_log`.\n')
-            return False
-
-        str_sql = 'UPDATE ts_log SET protocol=2 WHERE sys_type=2;'
-        ret = sql_con.ExecProcNonQuery(str_sql)
-        if not ret:
-            log.e('can not fix database table `ts_log`.\n')
-            return False
-
-        str_sql = 'UPDATE ts_log SET ret_code=9999 WHERE ret_code=0;'
-        ret = sql_con.ExecProcNonQuery(str_sql)
-        if not ret:
-            log.e('can not fix database table `ts_log`.\n')
-            return False
-
-
-    except:
-        return False
-
-    return True
-
-
-# def upgrade_to_1_6_224_3():
-#     # 服务端升级到版本1.6.224.3时，加入telnet支持，数据库有调整
-#     try:
-#         sql_con = get_sqlite_pool().get_tssqlcon()
-#
-#         # # 如果ts_config表中没有ts_server_telnet_port项，则增加默认值52389
-#         # str_sql = 'SELECT * FROM ts_config WHERE name="ts_server_telnet_port";'
-#         # db_ret = sql_con.ExecProcQuery(str_sql)
-#         # if len(db_ret) == 0:
-#         #     log.v('upgrade database to version 1.6.224.3 ...\n')
-#         #
-#         #     str_sql = 'INSERT INTO ts_config (name, value) VALUES (\'ts_server_telnet_port\', \'52389\');'
-#         #     db_ret = sql_con.ExecProcNonQuery(str_sql)
-#         #     if not db_ret:
-#         #         log.e('can not add telnet default port into `ts_config`.\n')
-#         #         return False
-#         #
-#
-#         # 如果ts_host_info表中还有pro_port字段，说明是旧版本，需要处理
-#         str_sql = 'SELECT pro_port FROM ts_host_info LIMIT 0;'
-#         db_ret = sql_con.ExecProcQuery(str_sql)
-#         if db_ret is not None:
-#             # 发现旧版本
-#
-#             log.v('upgrade database to version 1.6.224.3 ...\n')
-#             bak_file = '{}.before-1.6.224.3'.format(db_file)
-#             if not os.path.exists(bak_file):
-#                 shutil.copy(db_file, bak_file)
-#
-#             # 删除所有的表，重建新的
-#             # os.remove(db_file)
-#             str_sql = '''
-# ALTER TABLE ts_account RENAME TO __bak_ts_account;
-# ALTER TABLE ts_auth RENAME TO __bak_ts_auth;
-# ALTER TABLE ts_cert RENAME TO __bak_ts_cert;
-# ALTER TABLE ts_config RENAME TO __bak_ts_config;
-# ALTER TABLE ts_group RENAME TO __bak_ts_group;
-# ALTER TABLE ts_host_info RENAME TO __bak_ts_host_info;
-# ALTER TABLE ts_auth_info RENAME TO __bak_ts_auth_info;
-# ALTER TABLE ts_log RENAME TO __bak_ts_log;
-# '''
-#             sql_con.ExecManyProcNonQuery(str_sql)
-#
-#             return create_base_db()
-#
-#
-#     except:
-#         log.e('failed.\n')
-#         return False
-#
-#     return True
-
-def upgrade_to_1_6_224_3():
-    # 服务端升级到版本1.6.224.3时，加入telnet支持，数据库有调整
-    try:
-        sql_con = get_sqlite_pool().get_tssqlcon()
-
-        # 如果ts_config表中没有ts_server_telnet_port项，则增加默认值52389
-        str_sql = 'SELECT * FROM ts_config WHERE name="ts_server_telnet_port";'
-        db_ret = sql_con.ExecProcQuery(str_sql)
-        if len(db_ret) == 0:
-            # log.v('upgrade database to version 1.6.224.3 ...\n')
-
-            str_sql = 'INSERT INTO ts_config (name, value) VALUES (\'ts_server_telnet_port\', \'52389\');'
-            db_ret = sql_con.ExecProcNonQuery(str_sql)
-            if not db_ret:
-                log.e('can not add telnet default port into `ts_config`.\n')
-                return False
-
-        # 如果ts_host_info表中还有pro_port字段，说明是旧版本，需要处理
-        str_sql = 'SELECT pro_port FROM ts_host_info LIMIT 0;'
-        db_ret = sql_con.ExecProcQuery(str_sql)
-        if db_ret is None:
-            return True
-
-        # 发现旧版本
-        log.v('upgrade database to version 1.6.224.3 ...\n')
-        bak_file = '{}.before-1.6.224.3'.format(db_file)
-        if not os.path.exists(bak_file):
-            shutil.copy(db_file, bak_file)
-
-        str_sql = 'SELECT id, host_id, pro_type, auth_mode, user_name, user_pswd, cert_id, encrypt, log_time FROM ts_auth_info;'
-        auth_info_ret = sql_con.ExecProcQuery(str_sql)
-        # if auth_info_ret is not None:
-        #     for i in range(len(auth_info_ret)):
-        #         #host_id = db_ret[i][0]
-        #         print(auth_info_ret[i])
-
-        str_sql = 'SELECT auth_id, account_name, host_id, host_auth_id FROM ts_auth;'
-        auth_ret = sql_con.ExecProcQuery(str_sql)
-        # if auth_ret is not None:
-        #     for i in range(len(auth_ret)):
-        #         #host_id = db_ret[i][0]
-        #         print(auth_ret[i])
-
-        max_host_id = 0
-        new_host_info = []
-        new_auth_info = []
-        new_auth = []
-
-        # 从原来的表中查询数据
-        str_sql = 'SELECT host_id, group_id, host_sys_type, host_ip, pro_port, host_lock, host_desc FROM ts_host_info;'
-        host_info_ret = sql_con.ExecProcQuery(str_sql)
-        if host_info_ret is not None:
-            # 先找出最大的host_id，这样如果要拆分一个host，就知道新的host_id应该是多少了
-            for i in range(len(host_info_ret)):
-                # print(host_info_ret[i])
-                #j = json.loads(host_info_ret[i][4])
-                if host_info_ret[i][0] > max_host_id:
-                    max_host_id = host_info_ret[i][0]
-            max_host_id += 1
-
-            # 然后构建新的host列表
-            for i in range(len(host_info_ret)):
-                host_info = {}
-                host_info_alt = None
-
-                protocol = json.loads(host_info_ret[i][4])
-                host_info['host_id'] = host_info_ret[i][0]
-                host_info['group_id'] = host_info_ret[i][1]
-                host_info['host_sys_type'] = host_info_ret[i][2]
-                host_info['host_ip'] = host_info_ret[i][3]
-                host_info['host_lock'] = host_info_ret[i][5]
-                host_info['host_desc'] = host_info_ret[i][6]
-                host_info['_old_host_id'] = host_info_ret[i][0]
-                host_info['host_port'] = 0
-                host_info['protocol'] = 0
-
-                have_rdp = False
-                have_ssh = False
-                if auth_info_ret is not None:
-                    for j in range(len(auth_info_ret)):
-                        if auth_info_ret[j][1] == host_info['host_id']:
-                            if auth_info_ret[j][2] == 1:        # 用到了此主机的RDP
-                                have_rdp = True
-                            elif auth_info_ret[j][2] == 2:      # 用到了此主机的SSH
-                                have_ssh = True
-
-                if have_rdp and have_ssh:
-                    # 需要拆分
-                    host_info['protocol'] = 1
-                    host_info['host_port'] = protocol['rdp']['port']
-
-                    host_info_alt = {}
-                    host_info_alt['host_id'] = max_host_id
-                    max_host_id += 1
-                    host_info_alt['group_id'] = host_info_ret[i][1]
-                    host_info_alt['host_sys_type'] = host_info_ret[i][2]
-                    host_info_alt['host_ip'] = host_info_ret[i][3]
-                    host_info_alt['host_lock'] = host_info_ret[i][5]
-                    host_info_alt['host_desc'] = host_info_ret[i][6]
-                    host_info_alt['_old_host_id'] = host_info_ret[i][0]
-                    host_info_alt['host_port'] = protocol['ssh']['port']
-                    host_info_alt['protocol'] = 2
-                elif have_rdp:
-                    host_info['protocol'] = 1
-                    host_info['host_port'] = protocol['rdp']['port']
-                elif have_ssh:
-                    host_info['host_port'] = protocol['ssh']['port']
-                    host_info['protocol'] = 2
-
-                new_host_info.append(host_info)
-                if host_info_alt is not None:
-                    new_host_info.append(host_info_alt)
-
-            # print('=====================================')
-            # for i in range(len(new_host_info)):
-            #     print(new_host_info[i])
-
-            # 现在有了新的ts_host_info表，重构ts_auth_info表
-            # 'SELECT id, host_id, pro_type, auth_mode, user_name, user_pswd, cert_id, encrypt, log_time FROM ts_auth_info;'
-            if auth_info_ret is not None:
-                for i in range(len(auth_info_ret)):
-                    auth_info = {}
-                    auth_info['id'] = auth_info_ret[i][0]
-                    auth_info['auth_mode'] = auth_info_ret[i][3]
-                    auth_info['user_name'] = auth_info_ret[i][4]
-                    auth_info['user_pswd'] = auth_info_ret[i][5]
-                    auth_info['cert_id'] = auth_info_ret[i][6]
-                    auth_info['encrypt'] = auth_info_ret[i][7]
-                    auth_info['log_time'] = auth_info_ret[i][8]
-                    auth_info['user_param'] = 'ogin:\nassword:'
-                    found = False
-                    for j in range(len(new_host_info)):
-                        if auth_info_ret[i][1] == new_host_info[j]['_old_host_id'] and auth_info_ret[i][2] == new_host_info[j]['protocol']:
-                            found = True
-                            auth_info['host_id'] = new_host_info[j]['host_id']
-                            auth_info['_old_host_id'] = new_host_info[j]['_old_host_id']
-                            break
-                    if found:
-                        new_auth_info.append(auth_info)
-
-            # for i in range(len(new_auth_info)):
-            #     print(new_auth_info[i])
-
-            # 最后重构ts_auth表
-            if auth_ret is not None:
-                for i in range(len(auth_ret)):
-                    auth = {}
-                    auth['auth_id'] = auth_ret[i][0]
-                    auth['account_name'] = auth_ret[i][1]
-                    found = False
-                    for j in range(len(new_auth_info)):
-                        if auth_ret[i][2] == new_auth_info[j]['_old_host_id'] and auth_ret[i][3] == new_auth_info[j]['id']:
-                            found = True
-                            auth['host_id'] = new_auth_info[j]['host_id']
-                            auth['host_auth_id'] = new_auth_info[j]['id']
-                            break
-                    if found:
-                        new_auth.append(auth)
-
-            # for i in range(len(new_auth)):
-            #     print(new_auth[i])
-
-            # 将整理好的数据写入新的临时表
-            # 先创建三个临时表
-            str_sql = '''CREATE TABLE "ts_auth_tmp" (
-            "auth_id"  INTEGER PRIMARY KEY AUTOINCREMENT,
-            "account_name"  varchar(256),
-            "host_id"  INTEGER,
-            "host_auth_id"  int(11) NOT NULL
-            );'''
-
-            ret = sql_con.ExecProcNonQuery(str_sql)
-            if not ret:
-                log.e('can not create table `ts_auth_tmp`.\n')
-                return False
-
-            str_sql = '''CREATE TABLE "ts_host_info_tmp" (
-            "host_id"  integer PRIMARY KEY AUTOINCREMENT,
-            "group_id"  int(11) DEFAULT 0,
-            "host_sys_type"  int(11) DEFAULT 1,
-            "host_ip"  varchar(32) DEFAULT '',
-            "host_port"  int(11) DEFAULT 0,
-            "protocol"  int(11) DEFAULT 0,
-            "host_lock"  int(11) DEFAULT 0,
-            "host_desc"   DEFAULT ''
-            );'''
-
-            ret = sql_con.ExecProcNonQuery(str_sql)
-            if not ret:
-                log.e('can not create table `ts_host_info_tmp`.\n')
-                return False
-
-            str_sql = '''CREATE TABLE "ts_auth_info_tmp" (
-            "id"  INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
-            "host_id"  INTEGER,
-            "auth_mode"  INTEGER,
-            "user_name"  varchar(256),
-            "user_pswd"  varchar(256),
-            "user_param" varchar(256),
-            "cert_id"  INTEGER,
-            "encrypt"  INTEGER,
-            "log_time"  varchar(60)
-            );'''
-
-            ret = sql_con.ExecProcNonQuery(str_sql)
-            if not ret:
-                log.e('can not create table `ts_auth_info_tmp`.\n')
-                return False
-
-            for i in range(len(new_host_info)):
-                str_sql = 'INSERT INTO ts_host_info_tmp (host_id, group_id, host_sys_type, host_ip, host_port, protocol, host_lock, host_desc) ' \
-                          'VALUES ({}, {}, {}, \'{}\', {}, {}, {}, \'{}\');'.format(
-                    new_host_info[i]['host_id'], new_host_info[i]['group_id'], new_host_info[i]['host_sys_type'],
-                    new_host_info[i]['host_ip'], new_host_info[i]['host_port'], new_host_info[i]['protocol'],
-                    new_host_info[i]['host_lock'], new_host_info[i]['host_desc']
-                )
-                ret = sql_con.ExecProcNonQuery(str_sql)
-                if not ret:
-                    log.e('can not insert item into `ts_host_info`.\n')
-                    return False
-
-            for i in range(len(new_auth_info)):
-                str_sql = 'INSERT INTO ts_auth_info_tmp (id, host_id, auth_mode, user_name, user_pswd, user_param, cert_id, encrypt, log_time) ' \
-                          'VALUES ({}, {}, {}, \'{}\', \'{}\', \'{}\', {}, {}, \'{}\');'.format(
-                    new_auth_info[i]['id'], new_auth_info[i]['host_id'], new_auth_info[i]['auth_mode'],
-                    new_auth_info[i]['user_name'], new_auth_info[i]['user_pswd'], new_auth_info[i]['user_param'],
-                    new_auth_info[i]['cert_id'], new_auth_info[i]['encrypt'], '1'
-                )
-                # print(str_sql)
-                ret = sql_con.ExecProcNonQuery(str_sql)
-                if not ret:
-                    log.e('can not insert item into `ts_auth_info`.\n')
-                    return False
-
-            for i in range(len(new_auth)):
-                str_sql = 'INSERT INTO ts_auth_tmp (auth_id, account_name, host_id, host_auth_id) ' \
-                          'VALUES ({}, \'{}\', {}, {});'.format(
-                    new_auth[i]['auth_id'], new_auth[i]['account_name'], new_auth[i]['host_id'], new_auth[i]['host_auth_id']
-                )
-                # print(str_sql)
-                ret = sql_con.ExecProcNonQuery(str_sql)
-                if not ret:
-                    log.e('can not insert item into `ts_auth`.\n')
-                    return False
-
-            # 表改名
-            str_sql = 'ALTER TABLE ts_auth RENAME TO __bak_ts_auth;'
-            ret = sql_con.ExecProcNonQuery(str_sql)
-            if not ret:
-                log.e('can not rename table `ts_auth` to `__bak_ts_auth`.\n')
-                return False
-
-            str_sql = 'ALTER TABLE ts_auth_info RENAME TO __bak_ts_auth_info;'
-            ret = sql_con.ExecProcNonQuery(str_sql)
-            if not ret:
-                log.e('can not rename table `ts_auth_info` to `__bak_ts_auth_info`.\n')
-                return False
-
-            str_sql = 'ALTER TABLE ts_host_info RENAME TO __bak_ts_host_info;'
-            ret = sql_con.ExecProcNonQuery(str_sql)
-            if not ret:
-                log.e('can not rename table `ts_host_info` to `__bak_ts_host_info`.\n')
-                return False
-
-            str_sql = 'ALTER TABLE ts_auth_tmp RENAME TO ts_auth;'
-            ret = sql_con.ExecProcNonQuery(str_sql)
-            if not ret:
-                log.e('can not rename table `ts_auth_tmp` to `ts_auth`.\n')
-                return False
-
-            str_sql = 'ALTER TABLE ts_auth_info_tmp RENAME TO ts_auth_info;'
-            ret = sql_con.ExecProcNonQuery(str_sql)
-            if not ret:
-                log.e('can not rename table `ts_auth_info_tmp` to `ts_auth_info`.\n')
-                return False
-
-            str_sql = 'ALTER TABLE ts_host_info_tmp RENAME TO ts_host_info;'
-            ret = sql_con.ExecProcNonQuery(str_sql)
-            if not ret:
-                log.e('can not rename table `ts_host_info_tmp` to `ts_host_info`.\n')
-                return False
-
-
-    except:
-        log.e('failed.\n')
-        return False
-
-    return True
-
-
-if __name__ == '__main__':
-    sys.exit(main())
diff --git a/server/www/teleport/view/log/record-ssh-cmd.mako b/server/www/teleport/view/log/record-ssh-cmd.mako
index 80ce064..822974f 100644
--- a/server/www/teleport/view/log/record-ssh-cmd.mako
+++ b/server/www/teleport/view/log/record-ssh-cmd.mako
@@ -71,7 +71,7 @@
 
         ywl.add_page_options(${page_param});
 
-        var danger_cmd = ['rm', 'su', 'sudo', 'kill'];
+        var danger_cmd = ['chmod', 'chown', 'kill', 'rm', 'su', 'sudo'];
         var info_cmd = ['exit'];
 
         ywl.on_init = function (cb_stack, cb_args) {