Django Heroku postgres 连接错误

Question

我试图在 this guide with guidance from the Heroku docs 之后将一个基本的 Wagtail Django 站点 (pip install wagtail) 推送到 Heroku，但我遇到了一个非常常见的 postgres 连接错误（如下）。我可以从仪表板中看到 Heroku 正在提供实时数据库，我可以使用 heroku pq:psql 访问它。

项目运行在本地以及当我运行 heroku local.

我的`project/app/settings/production.py'是按照推荐设置的：

import os

env = os.environ.copy()
SECRET_KEY = env['SECRET_KEY']

from __future__ import absolute_import, unicode_literals

from .base import *

DEBUG = False

try:
    from .local import *
except ImportError:
    pass

# Parse database configuration from $DATABASE_URL
import dj_database_url
DATABASES = {'default': dj_database_url.config(default='postgres://localhost')}
print('check')
print(DATABASES)

# Honor the 'X-Forwarded-Proto' header for request.is_secure()
SECURE_PROXY_SSL_HEADER = ('HTTP_X_FORWARDED_PROTO', 'https')

# Allow all host headers
ALLOWED_HOSTS = ['*']

Procfile（在 repo 的根目录）

web: gunicorn myproj.wsgi:application --log-file -

myproj/wsgi.py

from __future__ import absolute_import, unicode_literals

import os

from django.core.wsgi import get_wsgi_application

os.environ.setdefault("DJANGO_SETTINGS_MODULE", "myproj.settings.dev")

application = get_wsgi_application()

我得到的错误：

  File "/app/.heroku/python/lib/python3.6/site-packages/django/db/backends/base/base.py", line 213, in ensure_connection
    self.connect()
  File "/app/.heroku/python/lib/python3.6/site-packages/django/db/backends/base/base.py", line 189, in connect
    self.connection = self.get_new_connection(conn_params)
  File "/app/.heroku/python/lib/python3.6/site-packages/django/db/backends/postgresql/base.py", line 176, in get_new_connection
    connection = Database.connect(**conn_params)
  File "/app/.heroku/python/lib/python3.6/site-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: No such file or directory
    Is the server running locally and accepting
    connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"?

有人能帮忙吗？

Answer 1

您的 wsgi 文件指向您的开发设置；生产的根本没有被使用。

使用setdefault设置环境变量意味着如果已经设置，将优先使用现有值。所以你应该运行 heroku config:set DJANGO_SETTINGS_MODULE=myproj.settings.production 来设置那个值。

Django Heroku postgres 连接错误

Django Heroku postgres connectivity error

python

django

postgresql

heroku

wagtail