couldn't connet to server when create superuser

[jiangjun001]

$ winpty docker exec -it cvat bash -ic 'python3 ~/manage.py createsuperuser'
Traceback (most recent call last):
File "/usr/local/lib/python3.5/dist-packages/django/db/backends/base/base.py",
line 217, in ensure_connection
self.connect()
File "/usr/local/lib/python3.5/dist-packages/django/db/backends/base/base.py",
line 195, in connect
self.connection = self.get_new_connection(conn_params)
File "/usr/local/lib/python3.5/dist-packages/django/db/backends/postgresql/bas
e.py", line 178, in get_new_connection
connection = Database.connect(**conn_params)
File "/usr/local/lib/python3.5/dist-packages/psycopg2/init.py", line 130,
in connect
conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
psycopg2.OperationalError: could not connect to server: Connection refused
Is the server running on host "cvat_db" (220.250.64.26) and accepting
TCP/IP connections on port 5432?

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "/home/django/manage.py", line 21, in
execute_from_command_line(sys.argv)
File "/usr/local/lib/python3.5/dist-packages/django/core/management/init.p
y", line 381, in execute_from_command_line
utility.execute()
File "/usr/local/lib/python3.5/dist-packages/django/core/management/init.p
y", line 375, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/usr/local/lib/python3.5/dist-packages/django/core/management/base.py",
line 323, in run_from_argv
self.execute(*args, **cmd_options)
File "/usr/local/lib/python3.5/dist-packages/django/contrib/auth/management/co
mmands/createsuperuser.py", line 61, in execute
return super().execute(*args, **options)
File "/usr/local/lib/python3.5/dist-packages/django/core/management/base.py",
line 363, in execute
self.check_migrations()
File "/usr/local/lib/python3.5/dist-packages/django/core/management/base.py",
line 453, in check_migrations
executor = MigrationExecutor(connections[DEFAULT_DB_ALIAS])
File "/usr/local/lib/python3.5/dist-packages/django/db/migrations/executor.py"
, line 18, in init
self.loader = MigrationLoader(self.connection)
File "/usr/local/lib/python3.5/dist-packages/django/db/migrations/loader.py",
line 49, in init
self.build_graph()
File "/usr/local/lib/python3.5/dist-packages/django/db/migrations/loader.py",
line 212, in build_graph
self.applied_migrations = recorder.applied_migrations()
File "/usr/local/lib/python3.5/dist-packages/django/db/migrations/recorder.py"
, line 73, in applied_migrations
if self.has_table():
File "/usr/local/lib/python3.5/dist-packages/django/db/migrations/recorder.py"
, line 56, in has_table
return self.Migration.meta.db_table in self.connection.introspection.table
names(self.connection.cursor())
File "/usr/local/lib/python3.5/dist-packages/django/db/backends/base/base.py",
line 256, in cursor
return self._cursor()
File "/usr/local/lib/python3.5/dist-packages/django/db/backends/base/base.py",
line 233, in _cursor
self.ensure_connection()
File "/usr/local/lib/python3.5/dist-packages/django/db/backends/base/base.py",
line 217, in ensure_connection
self.connect()
File "/usr/local/lib/python3.5/dist-packages/django/db/utils.py", line 89, in
exit
raise dj_exc_value.with_traceback(traceback) from exc_value
File "/usr/local/lib/python3.5/dist-packages/django/db/backends/base/base.py",
line 217, in ensure_connection
self.connect()
File "/usr/local/lib/python3.5/dist-packages/django/db/backends/base/base.py",
line 195, in connect
self.connection = self.get_new_connection(conn_params)
File "/usr/local/lib/python3.5/dist-packages/django/db/backends/postgresql/bas
e.py", line 178, in get_new_connection
connection = Database.connect(**conn_params)
File "/usr/local/lib/python3.5/dist-packages/psycopg2/init.py", line 130,
in connect
conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
django.db.utils.OperationalError: could not connect to server: Connection refuse
d
Is the server running on host "cvat_db" (220.250.64.26) and accepting
TCP/IP connections on port 5432?

[mozheng]

same question.你怎能没解决的？