我正在尝试移植sayIt，这是一个django应用，将postgresql作为沙尘暴应用。
我有一个在Ubuntu上运行的实例，并使用原始包装以dev模式运行它。但是，如下所示发生错误：
...** SANDSTORM SUPERVISOR: Starting up grain. Sandbox type: userns
Unhandled exception in thread started by
Performing system checks...
System check identified no issues (0 silenced).
Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/django/utils/autoreload.py", line 229, in wrapper
fn(*args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/django/core/management/commands/runserver.py", line 116, in inner_run
self.check_migrations()
File "/usr/local/lib/python2.7/dist-packages/django/core/management/commands/runserver.py", line 168, in check_migrations
executor = MigrationExecutor(connections[DEFAULT_DB_ALIAS])
File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/executor.py", line 19, in __init__
self.loader = MigrationLoader(self.connection)
File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/loader.py", line 47, in __init__
self.build_graph()
File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/loader.py", line 191, in build_graph
self.applied_migrations = recorder.applied_migrations()
File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/recorder.py", line 59, in applied_migrations
self.ensure_schema()
File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/recorder.py", line 49, in ensure_schema
if self.Migration._meta.db_table in self.connection.introspection.table_names(self.connection.cursor()):
File "/usr/local/lib/python2.7/dist-packages/django/db/backends/base/base.py", line 162, in cursor
cursor = self.make_debug_cursor(self._cursor())
File "/usr/local/lib/python2.7/dist-packages/django/db/backends/base/base.py", line 135, in _cursor
self.ensure_connection()
File "/usr/local/lib/python2.7/dist-packages/django/db/backends/base/base.py", line 130, in ensure_connection
self.connect()
File "/usr/local/lib/python2.7/dist-packages/django/db/utils.py", line 98, in __exit__
six.reraise(dj_exc_type, dj_exc_value, traceback)
File "/usr/local/lib/python2.7/dist-packages/django/db/backends/base/base.py", line 130, in ensure_connection
self.connect()
File "/usr/local/lib/python2.7/dist-packages/django/db/backends/base/base.py", line 119, in connect
self.connection = self.get_new_connection(conn_params)
File "/usr/local/lib/python2.7/dist-packages/django/db/backends/postgresql_psycopg2/base.py", line 176, in get_new_connection
connection = Database.connect(**conn_params)
File "/usr/local/lib/python2.7/dist-packages/psycopg2/__init__.py", line 164, in connect
conn = _connect(dsn, connection_factory=connection_factory, async=async)
django.db.utils.OperationalError: 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?
我试图输入谷物，但文件只是说读了vagrant-spk的源代码，我读过但无法理解。
似乎postgresql没有运行和监听，但我完全不知道为什么。任何提示都表示赞赏。谢谢！