我是OpenStack devstack的初学者。当我安装OpenStack并登录到系统时，我注意到那里没有任何错误消息。但是重新启动机器并登录到实例和概述部分后，我发现有一个错误，称为
JSONDecodeError：期望值：第1行第1列（字符0）
。我仍然不知道如何解决这个问题。请帮助我实现这一目标。感谢您的帮助。
JSONDecodeError at /project/instances/
Expecting value: line 1 column 1 (char 0)
Request Method: GET
Request URL: http://10.1.1.140/dashboard/project/instances/
Django Version: 2.2.12
Exception Type: JSONDecodeError
Exception Value:
Expecting value: line 1 column 1 (char 0)
Exception Location: /usr/lib/python3.6/json/decoder.py in raw_decode, line 357
Python Executable: /usr/bin/python3
Python Version: 3.6.9
Python Path:
['/opt/stack/horizon',
'/opt/stack/horizon',
'/opt/stack/keystone',
'/opt/stack/glance',
'/opt/stack/cinder',
'/opt/stack/neutron',
'/opt/stack/nova',
'/opt/stack/placement',
'/opt/stack/horizon',
'/opt/stack/tempest',
'/usr/lib/python36.zip',
'/usr/lib/python3.6',
'/usr/lib/python3.6/lib-dynload',
'/usr/local/lib/python3.6/dist-packages',
'/usr/lib/python3/dist-packages',
'/opt/stack/horizon/openstack_dashboard']
Server time: Sat, 4 Apr 2020 14:09:49 +0000
Traceback] >>
Environment:
Request Method: GET
Request URL: http://10.1.1.140/dashboard/project/instances/
Django Version: 2.2.12
Python Version: 3.6.9
Installed Applications:
['openstack_dashboard.dashboards.project',
'openstack_dashboard.dashboards.admin',
'openstack_dashboard.dashboards.identity',
'openstack_dashboard.dashboards.settings',
'openstack_dashboard',
'django.contrib.contenttypes',
'django.contrib.auth',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'django.contrib.humanize',
'django_pyscss',
'debreach',
'openstack_dashboard.django_pyscss_fix',
'compressor',
'horizon',
'openstack_auth']
Installed Middleware:
('openstack_auth.middleware.OpenstackAuthMonkeyPatchMiddleware',
'debreach.middleware.RandomCommentMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'horizon.middleware.OperationLogMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'horizon.middleware.HorizonMiddleware',
'horizon.themes.ThemeMiddleware',
'django.middleware.locale.LocaleMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware',
'openstack_dashboard.contrib.developer.profiler.middleware.ProfilerClientMiddleware',
'openstack_dashboard.contrib.developer.profiler.middleware.ProfilerMiddleware')
Traceback:
File "/usr/lib/python3.6/json/decoder.py" in raw_decode
355. obj, end = self.scan_once(s, idx)
During handling of the above exception (0), another exception occurred:
File "/usr/local/lib/python3.6/dist-packages/django/core/handlers/exception.py" in inner
34. response = get_response(request)
File "/usr/local/lib/python3.6/dist-packages/django/core/handlers/base.py" in _get_response
115. response = self.process_exception_by_middleware(e, request)
File "/usr/local/lib/python3.6/dist-packages/django/core/handlers/base.py" in _get_response
113. response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/opt/stack/horizon/horizon/decorators.py" in dec
52. return view_func(request, *args, **kwargs)
File "/opt/stack/horizon/horizon/decorators.py" in dec
36. return view_func(request, *args, **kwargs)
File "/opt/stack/horizon/horizon/decorators.py" in dec
36. return view_func(request, *args, **kwargs)
File "/opt/stack/horizon/horizon/decorators.py" in dec
113. return view_func(request, *args, **kwargs)
File "/opt/stack/horizon/horizon/decorators.py" in dec
84. return view_func(request, *args, **kwargs)
File "/usr/local/lib/python3.6/dist-packages/django/views/generic/base.py" in view
71. return self.dispatch(request, *args, **kwargs)
File "/usr/local/lib/python3.6/dist-packages/django/views/generic/base.py" in dispatch
97. return handler(request, *args, **kwargs)
File "/opt/stack/horizon/horizon/tables/views.py" in get
223. handled = self.construct_tables()
File "/opt/stack/horizon/horizon/tables/views.py" in construct_tables
214. handled = self.handle_table(table)
File "/opt/stack/horizon/horizon/tables/views.py" in handle_table
123. data = self._get_data_dict()
File "/opt/stack/horizon/horizon/tables/views.py" in _get_data_dict
252. self._data = {self.table_class._meta.name: self.get_data()}
File "/opt/stack/horizon/openstack_dashboard/dashboards/project/instances/views.py" in get_data
156. self._get_images, self._get_flavors, self._get_volumes
File "/opt/stack/horizon/openstack_dashboard/utils/futurist_utils.py" in call_functions_parallel
50. return tuple(f.result() for f in futures)
File "/opt/stack/horizon/openstack_dashboard/utils/futurist_utils.py" in <genexpr>
50. return tuple(f.result() for f in futures)
File "/usr/lib/python3.6/concurrent/futures/_base.py" in result
425. return self.__get_result()
File "/usr/lib/python3.6/concurrent/futures/_base.py" in __get_result
384. raise self._exception
File "/usr/local/lib/python3.6/dist-packages/futurist/_utils.py" in run
52. result = self.fn(*self.args, **self.kwargs)
File "/opt/stack/horizon/openstack_dashboard/dashboards/project/instances/views.py" in _get_volumes
147. exceptions.handle(self.request, ignore=True)
File "/opt/stack/horizon/openstack_dashboard/dashboards/project/instances/views.py" in _get_volumes
144. volumes = api.cinder.volume_list(self.request)
File "/opt/stack/horizon/openstack_dashboard/api/cinder.py" in volume_list
296. sort_dir=sort_dir)
File "/opt/stack/horizon/openstack_dashboard/api/cinder.py" in volume_list_paged
333. c_client = _cinderclient_with_generic_groups(request)
File "/opt/stack/horizon/openstack_dashboard/api/cinder.py" in _cinderclient_with_generic_groups
285. return _cinderclient_with_features(request, 'groups')
File "/opt/stack/horizon/openstack_dashboard/api/cinder.py" in _cinderclient_with_features
267. version = get_microversion(request, features)
File "/opt/stack/horizon/openstack_dashboard/api/cinder.py" in get_microversion
260. insecure, cacert)
File "/usr/local/lib/python3.6/dist-packages/cinderclient/client.py" in get_server_version
117. data = json.loads(response.text)
File "/usr/lib/python3.6/json/__init__.py" in loads
354. return _default_decoder.decode(s)
File "/usr/lib/python3.6/json/decoder.py" in decode
339. obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/usr/lib/python3.6/json/decoder.py" in raw_decode
357. raise JSONDecodeError("Expecting value", s, err.value) from None
Exception Type: JSONDecodeError at /project/instances/
Exception Value: Expecting value: line 1 column 1 (char 0)
我是OpenStack devstack的初学者。当我安装OpenStack并登录到系统时，我注意到那里没有任何错误消息。但是重新启动我的机器并登录到...
我能够通过重新启动数据库，然后重新启动Cinder服务来解决此问题。在我的devstack设置中，包括运行sudo service mysql restart和sudo service devstack@c-api restart