2026-01-12 02:09:44,235 ERROR: (v1.41) Checker check_zk_mode_and_node_count: Exception, AttributeError
Python 3.9.21: /usr/bin/python3
Mon Jan 12 02:09:44 2026

A problem occurred in a Python script.  Here is the sequence of
function calls leading up to the error, in the order they occurred.

 /usr/local/lib/python3.9/site-packages/vnc_cfg_api_server/db_manage.py in wrapper(*args=(<vnc_cfg_api_server.db_manage.DatabaseChecker object>,), **kwargs={})
 1541             self = args[0]
 1542             try:
 1543                 errors = func(*args, **kwargs)
 1544                 if not errors:
 1545                     self._logger.info('(v%s) Checker %s: Success', __version__,
errors undefined
func = <function DatabaseChecker.check_zk_mode_and_node_count>
args = (<vnc_cfg_api_server.db_manage.DatabaseChecker object>,)
kwargs = {}

 /usr/local/lib/python3.9/site-packages/vnc_cfg_api_server/db_manage.py in check_zk_mode_and_node_count(self=<vnc_cfg_api_server.db_manage.DatabaseChecker object>)
 1591         # Check mode
 1592         for stat_out in list(stats.values()):
 1593             mode = re.search('Mode:(.*)\n', stat_out).group(1).strip()
 1594             modes[mode] += 1
 1595         n_zk_servers = len(self._api_args.zk_server_ip.split(','))
mode = 'follower'
global re = <module 're' from '/usr/lib64/python3.9/re.py'>
re.search = <function search>
stat_out = 'Zookeeper version: 3.7.1-a2fb57c55f8e59cdd76c34b...Connections: 25\nOutstanding: 0\nZxid: 0x100000ac8\n'
).group undefined
AttributeError: 'NoneType' object has no attribute 'group'
    __cause__ = None
    __class__ = <class 'AttributeError'>
    __context__ = None
    __delattr__ = <method-wrapper '__delattr__' of AttributeError object>
    __dict__ = {}
    __dir__ = <built-in method __dir__ of AttributeError object>
    __doc__ = 'Attribute not found.'
    __eq__ = <method-wrapper '__eq__' of AttributeError object>
    __format__ = <built-in method __format__ of AttributeError object>
    __ge__ = <method-wrapper '__ge__' of AttributeError object>
    __getattribute__ = <method-wrapper '__getattribute__' of AttributeError object>
    __gt__ = <method-wrapper '__gt__' of AttributeError object>
    __hash__ = <method-wrapper '__hash__' of AttributeError object>
    __init__ = <method-wrapper '__init__' of AttributeError object>
    __init_subclass__ = <built-in method __init_subclass__ of type object>
    __le__ = <method-wrapper '__le__' of AttributeError object>
    __lt__ = <method-wrapper '__lt__' of AttributeError object>
    __ne__ = <method-wrapper '__ne__' of AttributeError object>
    __new__ = <built-in method __new__ of type object>
    __reduce__ = <built-in method __reduce__ of AttributeError object>
    __reduce_ex__ = <built-in method __reduce_ex__ of AttributeError object>
    __repr__ = <method-wrapper '__repr__' of AttributeError object>
    __setattr__ = <method-wrapper '__setattr__' of AttributeError object>
    __setstate__ = <built-in method __setstate__ of AttributeError object>
    __sizeof__ = <built-in method __sizeof__ of AttributeError object>
    __str__ = <method-wrapper '__str__' of AttributeError object>
    __subclasshook__ = <built-in method __subclasshook__ of type object>
    __suppress_context__ = False
    __traceback__ = <traceback object>
    args = ("'NoneType' object has no attribute 'group'",)
    with_traceback = <built-in method with_traceback of AttributeError object>

The above is a description of an error in a Python program.  Here is
the original traceback:

Traceback (most recent call last):
  File "/usr/local/lib/python3.9/site-packages/vnc_cfg_api_server/db_manage.py", line 1543, in wrapper
    errors = func(*args, **kwargs)
  File "/usr/local/lib/python3.9/site-packages/vnc_cfg_api_server/db_manage.py", line 1593, in check_zk_mode_and_node_count
    mode = re.search('Mode:(.*)\n', stat_out).group(1).strip()
AttributeError: 'NoneType' object has no attribute 'group'


Traceback (most recent call last):
  File "/usr/local/lib/python3.9/site-packages/vnc_cfg_api_server/db_manage.py", line 1543, in wrapper
    errors = func(*args, **kwargs)
  File "/usr/local/lib/python3.9/site-packages/vnc_cfg_api_server/db_manage.py", line 1593, in check_zk_mode_and_node_count
    mode = re.search('Mode:(.*)\n', stat_out).group(1).strip()
AttributeError: 'NoneType' object has no attribute 'group'