[英]Not able to connect to postgresql in production, using AWS RDS
my django app, when I ran it locally(localhost + sqlite3) or in production(public Postgres RDS) on port 8000, it works perfectly.我的 django 应用程序,当我在本地(localhost + sqlite3)或在端口 8000 上运行(公共 Postgres RDS)时,它运行良好。
As ports below 1024 are not accessible without root permissions, hence to run on port 80 I used:由于没有 root 权限就无法访问 1024 以下的端口,因此我使用了在端口 80 上运行:
sudo python3 manage.py runserver
and got the following error:并得到以下错误:
OperationalError at /
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"?
I am using it from the same region EC2 instance.我在同一个区域 EC2 实例中使用它。 I was able to make migrations and migrate it over the same RDS Postgres database.
我能够进行迁移并将其迁移到同一个 RDS Postgres 数据库。
I also tried running on port 80 with gunicorn and root privileges but the same error.我还尝试使用 gunicorn 和 root 权限在端口 80 上运行,但同样的错误。
Here is my production settings.py
file:这是我的生产
settings.py
文件:
import os
# Build paths inside the project like this: os.path.join(BASE_DIR, ...)
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/3.0/howto/deployment/checklist/
# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = os.environ.get('SKEY')
# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = False
# Application definition
INSTALLED_APPS = [
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'main_skeleton',
'storages'
]
MIDDLEWARE = [
'django.middleware.security.SecurityMiddleware',
'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.clickjacking.XFrameOptionsMiddleware',
]
ROOT_URLCONF = 'blog.urls'
TEMPLATES = [
{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'DIRS': ['templates',],
'APP_DIRS': True,
'OPTIONS': {
'context_processors': [
'django.template.context_processors.debug',
'django.template.context_processors.request',
'django.contrib.auth.context_processors.auth',
'django.contrib.messages.context_processors.messages',
],
},
},
]
WSGI_APPLICATION = 'blog.wsgi.application'
# Password validation
# https://docs.djangoproject.com/en/3.0/ref/settings/#auth-password-validators
AUTH_PASSWORD_VALIDATORS = [
{
'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
},
{
'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
},
{
'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
},
{
'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
},
]
# Internationalization
# https://docs.djangoproject.com/en/3.0/topics/i18n/
LANGUAGE_CODE = 'en-us'
TIME_ZONE = 'UTC'
USE_I18N = True
USE_L10N = True
USE_TZ = True
# SMTP CONFIG
EMAIL_BACKEND = os.environ.get('EMAIL_BACKEND')
EMAIL_HOST = os.environ.get('EMAIL_HOST')
EMAIL_USE_TLS = os.environ.get('EMAIL_USE_TLS')
EMAIL_PORT = os.environ.get('EMAIL_PORT')
EMAIL_HOST_USER = os.environ.get('EMAIL_HOST_USER')
EMAIL_HOST_PASSWORD = os.environ.get('EMAIL_HOST_PASSWORD')
STATIC_URL = '/static/'
ALLOWED_HOSTS = [os.environ.get('HOST_DOMAIN'), os.environ.get('HOST_IP')]
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.postgresql',
'NAME': os.environ.get('DB_NAME'),
'USER': os.environ.get('DB_USER'),
'HOST': os.environ.get('DB_HOST'),
'PASSWORD': os.environ.get('DB_PASSWORD'),
'PORT': os.environ.get('DB_PORT'),
}
}
I checked that I am able to get values from env variables as well.我检查了我是否也能够从环境变量中获取值。
Your environment variables are not set inside sudo environment您的环境变量未在 sudo 环境中设置
If you want to preserve environment you can use -E
如果你想保护环境,你可以使用
-E
man sudo
The -E (preserve environment) option indicates to the security policy that the user wishes to preserve their existing environment variables.
-E(保留环境)选项向安全策略表明用户希望保留他们现有的环境变量。 The security policy may return an error if the -E option is specified and the user does not have permission to preserve the environment.
如果指定了 -E 选项并且用户没有保留环境的权限,则安全策略可能会返回错误。
Error you are facing is clearly pointing to this ( from django docs )您面临的错误显然指向这一点(来自django 文档)
If you're using PostgreSQL, by default (empty HOST), the connection to the database is done through UNIX domain sockets
如果您使用的是 PostgreSQL,默认情况下(空 HOST),通过 UNIX 域 sockets 完成与数据库的连接
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