diff --git a/src/gausskernel/dbmind/tools/cmd/config_utils.py b/src/gausskernel/dbmind/tools/cmd/config_utils.py
index 6fcd06247..42a99bf83 100644
--- a/src/gausskernel/dbmind/tools/cmd/config_utils.py
+++ b/src/gausskernel/dbmind/tools/cmd/config_utils.py
@@ -11,25 +11,57 @@
 # MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
 # See the Mulan PSL v2 for more details.
 import os
-import re
 from configparser import ConfigParser
 from configparser import NoSectionError, NoOptionError
 
 from dbmind import constants
 from dbmind.common import security
 from dbmind.common.exceptions import InvalidPasswordException, ConfigSettingError
-from dbmind.metadatabase.dao.dynamic_config import dynamic_config_get, dynamic_config_set
 from dbmind.common.utils import write_to_terminal
+from dbmind.metadatabase.dao.dynamic_config import dynamic_config_get, dynamic_config_set
+
+DBMIND_CONF_HEADER = """\
+# Copyright (c) 2022 Huawei Technologies Co.,Ltd.
+#
+# openGauss is licensed under Mulan PSL v2.
+# You can use this software according to the terms and conditions of the Mulan PSL v2.
+# You may obtain a copy of Mulan PSL v2 at:
+#
+#          http://license.coscl.org.cn/MulanPSL2
+#
+# THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+# EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+# MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+# See the Mulan PSL v2 for more details.
+
+# Notice:
+# 1. (null) explicitly represents empty or null. Meanwhile blank represents undefined.
+# 2. DBMind encrypts password parameters. Hence, there is no plain-text password after initialization.
+# 3. Users can only configure the plain-text password in this file before initializing
+#    (that is, using the --initialize option),
+#    and then if users want to modify the password-related information,
+#    users need to use the 'set' sub-command to achieve.
+# 4. If users use relative path in this file, the current working directory is the directory where this file is located.
+"""
 
 NULL_TYPE = '(null)'  # empty text.
 ENCRYPTED_SIGNAL = 'Encrypted->'
 
+# Used by check_config_validity().
+CONFIG_OPTIONS = {
+    'TSDB-name': ['prometheus'],
+    'METADATABASE-dbtype': ['sqlite', 'opengauss', 'postgresql'],
+    'WORKER-type': ['local', 'dist'],
+    'LOG-level': ['DEBUG', 'INFO', 'WARNING', 'ERROR']
+}
 
-def check_config_validity(section, option, value, inline_comment=None):
+
+def check_config_validity(section, option, value):
     config_item = '%s-%s' % (section, option)
     # exceptional cases:
     if config_item == 'METADATABASE-port':
         return True, None
+
     # normal inspection process:
     if 'port' in option:
         valid_port = str.isdigit(value) and 0 < int(value) <= 65535
@@ -38,16 +70,14 @@ def check_config_validity(section, option, value, inline_comment=None):
     if 'database' in option:
         if value == NULL_TYPE or value.strip() == '':
             return False, 'Unspecified database name'
-    if 'Options:' in inline_comment:
-        # determine setting option whether choose from option list.
-        results = re.findall(r'Options: (.*)?\.', inline_comment)
-        if len(results) > 0:
-            options = list(map(str.strip, results[0].split(',')))
-            if value not in options:
-                return False, 'Invalid choice: %s' % value
+
+    options = CONFIG_OPTIONS.get(config_item)
+    if options and value not in options:
+        return False, 'Invalid choice: %s' % value
+
     if 'dbtype' in option and value == 'opengauss':
         write_to_terminal(
-            'WARN: default PostgresSQL connector (psycopg2-binary) does not support openGauss.\n'
+            'WARN: default PostgreSQL connector (psycopg2-binary) does not support openGauss.\n'
             'It would help if you compiled psycopg2 with openGauss manually or '
             'created a connection user after setting the GUC password_encryption_type to 1.',
             color='yellow'
@@ -102,7 +132,10 @@ class ConfigUpdater:
 
     def get(self, section, option):
         value = self.config.get(section, option)
-        default_value, inline_comment = map(str.strip, value.rsplit('#', 1))
+        try:
+            default_value, inline_comment = map(str.strip, value.rsplit('#', 1))
+        except ValueError:
+            default_value, inline_comment = value.strip(), ''
         if default_value == '':
             default_value = NULL_TYPE
         return default_value, inline_comment
@@ -132,10 +165,7 @@ class ConfigUpdater:
             # output configurations
             self.fp.truncate(0)
             self.fp.seek(0)
-            with open(
-                    file=os.path.join(constants.MISC_PATH, constants.CONFILE_HEADER_NAME)
-            ) as header_fp:
-                self.fp.writelines(header_fp.readlines())
+            self.fp.write(DBMIND_CONF_HEADER)
             self.config.write(self.fp)
             self.fp.flush()
         self.fp.close()
@@ -163,7 +193,7 @@ def set_config_parameter(confpath, section: str, option: str, value: str):
                 old_value, comment = config.get(section, option)
             except (NoSectionError, NoOptionError):
                 raise ConfigSettingError('Not found the parameter %s-%s.' % (section, option))
-            valid, reason = check_config_validity(section, option, value, comment)
+            valid, reason = check_config_validity(section, option, value)
             if not valid:
                 raise ConfigSettingError('Incorrect value due to %s.' % reason)
             # If user wants to change password, we should encrypt the plain-text password first.
diff --git a/src/gausskernel/dbmind/tools/cmd/setup.py b/src/gausskernel/dbmind/tools/cmd/setup.py
index eecc14df4..17b916003 100644
--- a/src/gausskernel/dbmind/tools/cmd/setup.py
+++ b/src/gausskernel/dbmind/tools/cmd/setup.py
@@ -19,7 +19,7 @@ from dbmind import constants, global_vars
 from dbmind.cmd.config_utils import (
     ConfigUpdater, check_config_validity,
     DynamicConfig, load_sys_configs,
-    NULL_TYPE, ENCRYPTED_SIGNAL
+    NULL_TYPE, ENCRYPTED_SIGNAL, DBMIND_CONF_HEADER
 )
 from dbmind.cmd.edbmind import SKIP_LIST
 from dbmind.common import utils, security
@@ -70,7 +70,7 @@ def initialize_and_check_config(confpath, interactive=False):
             for section, section_comment in config.sections(SKIP_LIST):
                 for option, value, inline_comment in config.items(section):
                     valid, invalid_reason = check_config_validity(
-                        section, option, value, inline_comment
+                        section, option, value
                     )
                     if not valid:
                         raise SetupError(
@@ -151,7 +151,10 @@ def setup_directory_interactive(confpath):
             utils.write_to_terminal(section_comment, color='yellow')
             # Get each configuration item.
             for option, values in config.items(section):
-                default_value, inline_comment = map(str.strip, values.rsplit('#', 1))
+                try:
+                    default_value, inline_comment = map(str.strip, values.rsplit('#', 1))
+                except ValueError:
+                    default_value, inline_comment = values.strip(), ''
                 # If not set default value, the default value is null.
                 if default_value.strip() == '':
                     default_value = NULL_TYPE
@@ -170,7 +173,7 @@ def setup_directory_interactive(confpath):
                         input_value = default_value
 
                     valid, invalid_reason = check_config_validity(
-                        section, option, input_value, inline_comment
+                        section, option, input_value
                     )
                     if not valid:
                         utils.write_to_terminal(
@@ -190,8 +193,7 @@ def setup_directory_interactive(confpath):
     # output configurations
     with open(file=config_dst, mode='w+') as fp:
         # Add header comments (including license and notice).
-        with open(file=os.path.join(confpath, constants.CONFILE_HEADER_NAME)) as header_fp:
-            fp.writelines(header_fp.readlines())
+        fp.write(DBMIND_CONF_HEADER)
         config.write(fp)
 
     initialize_and_check_config(confpath, interactive=True)
@@ -221,8 +223,7 @@ def setup_directory(confpath):
     with open(file=os.path.join(confpath, constants.CONFILE_NAME), mode='r+') as fp:
         old = fp.readlines()
         # Add header comments (including license and notice).
-        with open(file=os.path.join(constants.MISC_PATH, constants.CONFILE_HEADER_NAME)) as header_fp:
-            fp.seek(0)
-            fp.writelines(header_fp.readlines())
+        fp.seek(0)
+        fp.write(DBMIND_CONF_HEADER)
         fp.writelines(old)
     utils.write_to_terminal("Configure directory '%s' has been created successfully." % confpath, color='green')
diff --git a/src/gausskernel/dbmind/tools/constants.py b/src/gausskernel/dbmind/tools/constants.py
index 7aaebad51..1a892f3bd 100644
--- a/src/gausskernel/dbmind/tools/constants.py
+++ b/src/gausskernel/dbmind/tools/constants.py
@@ -19,7 +19,6 @@ DBMIND_PATH = os.path.dirname(os.path.abspath(__file__))
 MISC_PATH = os.path.join(DBMIND_PATH, 'misc')
 
 CONFILE_NAME = 'dbmind.conf'  # the name of configuration file
-CONFILE_HEADER_NAME = 'dbmind.conf.header'
 PIDFILE_NAME = 'dbmind.pid'
 LOGFILE_NAME = 'dbmind.log'
 METRIC_MAP_CONFIG = 'metric_map.conf'