无法连接运行的Django

Question

当我试图运行我的Django项目到本地主机，我遇到了以下问题：

^C(venv) tests-MacBook-Pro-2:hearinsights morganlai$ python manage.py runserver 
Performing system checks... 

System check identified no issues (0 silenced). 
Unhandled exception in thread started by <function wrapper at 0x103fc46e0> 
Traceback (most recent call last): 
    File "/Users/morganlai/Desktop/hearinsights-heap/venv/lib/python2.7/site-packages/django/utils/autoreload.py", line 226, in wrapper 
    fn(*args, **kwargs) 
    File "/Users/morganlai/Desktop/hearinsights-heap/venv/lib/python2.7/site-packages/django/core/management/commands/runserver.py", line 117, in inner_run 
    self.check_migrations() 
    File "/Users/morganlai/Desktop/hearinsights-heap/venv/lib/python2.7/site-packages/django/core/management/commands/runserver.py", line 163, in check_migrations 
    executor = MigrationExecutor(connections[DEFAULT_DB_ALIAS]) 
    File "/Users/morganlai/Desktop/hearinsights-heap/venv/lib/python2.7/site-packages/django/db/migrations/executor.py", line 20, in __init__ 
    self.loader = MigrationLoader(self.connection) 
    File "/Users/morganlai/Desktop/hearinsights-heap/venv/lib/python2.7/site-packages/django/db/migrations/loader.py", line 49, in __init__ 
    self.build_graph() 
    File "/Users/morganlai/Desktop/hearinsights-heap/venv/lib/python2.7/site-packages/django/db/migrations/loader.py", line 176, in build_graph 
    self.applied_migrations = recorder.applied_migrations() 
    File "/Users/morganlai/Desktop/hearinsights-heap/venv/lib/python2.7/site-packages/django/db/migrations/recorder.py", line 65, in applied_migrations 
    self.ensure_schema() 
    File "/Users/morganlai/Desktop/hearinsights-heap/venv/lib/python2.7/site-packages/django/db/migrations/recorder.py", line 52, in ensure_schema 
    if self.Migration._meta.db_table in self.connection.introspection.table_names(self.connection.cursor()): 
    File "/Users/morganlai/Desktop/hearinsights-heap/venv/lib/python2.7/site-packages/django/db/backends/base/base.py", line 231, in cursor 
    cursor = self.make_debug_cursor(self._cursor()) 
    File "/Users/morganlai/Desktop/hearinsights-heap/venv/lib/python2.7/site-packages/django/db/backends/base/base.py", line 204, in _cursor 
    self.ensure_connection() 
    File "/Users/morganlai/Desktop/hearinsights-heap/venv/lib/python2.7/site-packages/django/db/backends/base/base.py", line 199, in ensure_connection 
    self.connect() 
    File "/Users/morganlai/Desktop/hearinsights-heap/venv/lib/python2.7/site-packages/django/db/utils.py", line 95, in __exit__ 
    six.reraise(dj_exc_type, dj_exc_value, traceback) 
    File "/Users/morganlai/Desktop/hearinsights-heap/venv/lib/python2.7/site-packages/django/db/backends/base/base.py", line 199, in ensure_connection 
    self.connect() 
    File "/Users/morganlai/Desktop/hearinsights-heap/venv/lib/python2.7/site-packages/django/db/backends/base/base.py", line 171, in connect 
    self.connection = self.get_new_connection(conn_params) 
    File "/Users/morganlai/Desktop/hearinsights-heap/venv/lib/python2.7/site-packages/django/db/backends/postgresql/base.py", line 175, in get_new_connection 
    connection = Database.connect(**conn_params) 
    File "/Users/morganlai/Desktop/hearinsights-heap/venv/lib/python2.7/site-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? 

我试图启动和重新启动Postgres数据库这里的操作说明：How to start PostgreSQL server on Mac OS X?

重新启动服务器后，问题依然发生：

tests-MacBook-Pro-2:hearinsights morganlai$ pg_ctl -D /usr/local/var/postgres stop -s -m fast 
pg_ctl: PID file "/usr/local/var/postgres/postmaster.pid" does not exist 
Is server running? 
tests-MacBook-Pro-2:hearinsights morganlai$ pg_ctl -D /usr/local/var/postgres -l /usr/local/var/postgres/server.log start 
server starting 

，当我重新启动我的Mac我会遇到这样的问题，每一次并且该文章提供的解决方案通常在过去工作。由于这次不工作，我不知道这可能是一些其他问题。

Answer 1

尝试卸载当前的postgres文件。并从头开始使用自制安装：

https://launchschool.com/blog/how-to-install-postgresql-on-a-mac

这可能会解决您的问题。