OperationalError : could not connect to server

Sorry, I’m French I’m using Deepl. com for translation…

Impacted versions

• Modoboa: I don’t have access to modoboa and I don’t know where to find the information in the terminal. But I installed it two weeks ago.

• installer used: Yes/

• Webserver: Nginx

• Installed on a dedicated Debian 9.3 server

Steps to reproduce

After reboot

Current behavior

“Error with : Error as occured” when I visit https://mail.mondomaine.fr

Hello, I installed modoboa 2 weeks ago, everything worked perfectly but after a reboot, I no longer have access to webmail and I can no longer send or receive emails…

I have activated debug mode, here’s what it returns to me:

OperationalError at /
could not connect to server: Connection refused
	Is the server running on host "127.0.0.1" and accepting
	TCP/IP connections on port 5432?
Request Method:
GET
Request URL: https://mail.seedbt.fr/
Django Version: 1.10.8
Exception Type: OperationalError
Exception Value:
could not connect to server: Connection refused
	Is the server running on host "127.0.0.1" and accepting
	TCP/IP connections on port 5432?
Exception Location: /srv/modoboa/env/local/lib/python2.7/site-packages/psycopg2/__init__.py in connect, line 130
Python Executable: /usr/bin/uwsgi-core
Python Version: 2.7.13
Python Path:
['.',
 '',
 '/srv/modoboa/env/lib/python2.7',
 '/srv/modoboa/env/lib/python2.7/plat-x86_64-linux-gnu',
 '/srv/modoboa/env/lib/python2.7/lib-tk',
 '/srv/modoboa/env/lib/python2.7/lib-old',
 '/srv/modoboa/env/lib/python2.7/lib-dynload',
 '/usr/lib/python2.7',
 '/usr/lib/python2.7/plat-x86_64-linux-gnu',
 '/usr/lib/python2.7/lib-tk',
 '/srv/modoboa/env/local/lib/python2.7/site-packages',
 '/srv/modoboa/env/lib/python2.7/site-packages']
Server time: | Sat, 13 Jan 2018 11:04:32 +0100

I add the trace back :

Environment:


Request Method: GET
Request URL: https://mail.seedbt.fr/

Django Version: 1.10.8
Python Version: 2.7.13
Installed Applications:
('django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.sites',
 'django.contrib.staticfiles',
 'reversion',
 'ckeditor',
 'ckeditor_uploader',
 'rest_framework',
 'rest_framework.authtoken',
 'modoboa',
 'modoboa.core',
 'modoboa.lib',
 'modoboa.admin',
 'modoboa.relaydomains',
 'modoboa.limits',
 'modoboa.parameters',
 'modoboa_amavis',
 'modoboa_pdfcredentials',
 'modoboa_postfix_autoreply',
 'modoboa_sievefilters',
 'modoboa_stats',
 'modoboa_webmail',
 'modoboa_contacts',
 'webpack_loader')
Installed Middleware:
('x_forwarded_for.middleware.XForwardedForMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.locale.LocaleMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware',
 'modoboa.core.middleware.LocalConfigMiddleware',
 'modoboa.lib.middleware.AjaxLoginRedirect',
 'modoboa.lib.middleware.CommonExceptionCatcher',
 'modoboa.lib.middleware.RequestCatcherMiddleware')



Traceback:

File "/srv/modoboa/env/local/lib/python2.7/site-packages/django/core/handlers/exception.py" in inner
  42.             response = get_response(request)

File "/srv/modoboa/env/local/lib/python2.7/site-packages/django/core/handlers/base.py" in _legacy_get_response
  244.             response = middleware_method(request)

File "/srv/modoboa/env/local/lib/python2.7/site-packages/django/middleware/locale.py" in process_request
  25.         language = translation.get_language_from_request(request, check_path=i18n_patterns_used)

File "/srv/modoboa/env/local/lib/python2.7/site-packages/django/utils/translation/__init__.py" in get_language_from_request
  206.     return _trans.get_language_from_request(request, check_path)

File "/srv/modoboa/env/local/lib/python2.7/site-packages/django/utils/translation/trans_real.py" in get_language_from_request
  516.         lang_code = request.session.get(LANGUAGE_SESSION_KEY)

File "/srv/modoboa/env/local/lib/python2.7/site-packages/django/contrib/sessions/backends/base.py" in get
  68.         return self._session.get(key, default)

File "/srv/modoboa/env/local/lib/python2.7/site-packages/django/contrib/sessions/backends/base.py" in _get_session
  207.                 self._session_cache = self.load()

File "/srv/modoboa/env/local/lib/python2.7/site-packages/django/contrib/sessions/backends/db.py" in load
  35.                 expire_date__gt=timezone.now()

File "/srv/modoboa/env/local/lib/python2.7/site-packages/django/db/models/manager.py" in manager_method
  85.                 return getattr(self.get_queryset(), name)(*args, **kwargs)

File "/srv/modoboa/env/local/lib/python2.7/site-packages/django/db/models/query.py" in get
  379.         num = len(clone)

File "/srv/modoboa/env/local/lib/python2.7/site-packages/django/db/models/query.py" in __len__
  238.         self._fetch_all()

File "/srv/modoboa/env/local/lib/python2.7/site-packages/django/db/models/query.py" in _fetch_all
  1087.             self._result_cache = list(self.iterator())

File "/srv/modoboa/env/local/lib/python2.7/site-packages/django/db/models/query.py" in __iter__
  54.         results = compiler.execute_sql()

File "/srv/modoboa/env/local/lib/python2.7/site-packages/django/db/models/sql/compiler.py" in execute_sql
  833.         cursor = self.connection.cursor()

File "/srv/modoboa/env/local/lib/python2.7/site-packages/django/db/backends/base/base.py" in cursor
  231.             cursor = self.make_debug_cursor(self._cursor())

File "/srv/modoboa/env/local/lib/python2.7/site-packages/django/db/backends/base/base.py" in _cursor
  204.         self.ensure_connection()

File "/srv/modoboa/env/local/lib/python2.7/site-packages/django/db/backends/base/base.py" in ensure_connection
  199.                 self.connect()

File "/srv/modoboa/env/local/lib/python2.7/site-packages/django/db/utils.py" in __exit__
  94.                 six.reraise(dj_exc_type, dj_exc_value, traceback)

File "/srv/modoboa/env/local/lib/python2.7/site-packages/django/db/backends/base/base.py" in ensure_connection
  199.                 self.connect()

File "/srv/modoboa/env/local/lib/python2.7/site-packages/django/db/backends/base/base.py" in connect
  171.         self.connection = self.get_new_connection(conn_params)

File "/srv/modoboa/env/local/lib/python2.7/site-packages/django/db/backends/postgresql/base.py" in get_new_connection
  176.         connection = Database.connect(**conn_params)

File "/srv/modoboa/env/local/lib/python2.7/site-packages/psycopg2/__init__.py" in connect
  130.     conn = _connect(dsn, connection_factory=connection_factory, **kwasync)

Exception Type: OperationalError at /
Exception Value: could not connect to server: Connection refused
	Is the server running on host "127.0.0.1" and accepting
	TCP/IP connections on port 5432?

Do you need the other logs displayed?

Thank you in advance for your help, I’m really annoyed…

[CooperBarrett]

I use debian stretch. I manually restart postgresql with each reboot. For the moment, that’s enough…

[pubmania]

This is an year old issue which is closed but impacted my installation just today. Like @CooperBarrett mine is running on Debian Stretch so I tried restarting postgresql and sure enough it worked but am not sure what caused it to begin with and how to avoid it. Any suggestions will be hugely appreciated.