我正在使用 Amazon Postgre RDS。当我在本地服务器中连接此 RDS 时，它工作正常，但是当我将其推送到 github 上并拉上我的 EC2 时，我收到以下错误：
Traceback (most recent call last):
File "/home/ubuntu/myvenv/lib/python3.5/site-packages/django/utils/autoreload.py", line 227, in wrapper
fn(*args, **kwargs)
File "/home/ubuntu/myvenv/lib/python3.5/site-packages/django/core/management/commands/runserver.py", line 128, in inner_run
self.check_migrations()
File "/home/ubuntu/myvenv/lib/python3.5/site-packages/django/core/management/base.py", line 422, in check_migrations
executor = MigrationExecutor(connections[DEFAULT_DB_ALIAS])
File "/home/ubuntu/myvenv/lib/python3.5/site-packages/django/db/migrations/executor.py", line 20, in __init__
self.loader = MigrationLoader(self.connection)
File "/home/ubuntu/myvenv/lib/python3.5/site-packages/django/db/migrations/loader.py", line 52, in __init__
self.build_graph()
File "/home/ubuntu/myvenv/lib/python3.5/site-packages/django/db/migrations/loader.py", line 209, in build_graph
self.applied_migrations = recorder.applied_migrations()
File "/home/ubuntu/myvenv/lib/python3.5/site-packages/django/db/migrations/recorder.py", line 65, in applied_migrations
self.ensure_schema()
File "/home/ubuntu/myvenv/lib/python3.5/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 "/home/ubuntu/myvenv/lib/python3.5/site-packages/django/db/backends/base/base.py", line 254, in cursor
return self._cursor()
File "/home/ubuntu/myvenv/lib/python3.5/site-packages/django/db/backends/base/base.py", line 229, in _cursor
self.ensure_connection()
File "/home/ubuntu/myvenv/lib/python3.5/site-packages/django/db/backends/base/base.py", line 213, in ensure_connection
self.connect()
File "/home/ubuntu/myvenv/lib/python3.5/site-packages/django/db/utils.py", line 94, in __exit__
six.reraise(dj_exc_type, dj_exc_value, traceback)
File "/home/ubuntu/myvenv/lib/python3.5/site-packages/django/utils/six.py", line 685, in reraise
raise value.with_traceback(tb)
File "/home/ubuntu/myvenv/lib/python3.5/site-packages/django/db/backends/base/base.py", line 213, in ensure_connection
self.connect()
File "/home/ubuntu/myvenv/lib/python3.5/site-packages/django/db/backends/base/base.py", line 189, in connect
self.connection = self.get_new_connection(conn_params)
File "/home/ubuntu/myvenv/lib/python3.5/site-packages/django/db/backends/postgresql/base.py", line 176, in get_new_connection
connection = Database.connect(**conn_params)
File "/home/ubuntu/myvenv/lib/python3.5/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: Connection timed out
Is the server running on host "myammaji.cbgocwwown9z.ap-south-1.rds.amazonaws.com" (172.31.0.83) and accepting
TCP/IP connections on port 5432?我 settings.py 如下：
"""
Django settings for backmyitem project.
Generated by 'django-admin startproject' using Django 1.11.
For more information on this file, see
https://docs.djangoproject.com/en/1.11/topics/settings/
For the full list of settings and their values, see
https://docs.djangoproject.com/en/1.11/ref/settings/
"""
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/1.11/howto/deployment/checklist/
# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = os.getenv('SECRET_KEY'),
EMAIL_BACKEND = 'django.core.mail.backends.console.EmailBackend'
# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True
ALLOWED_HOSTS = ['127.0.0.1', 'ec2-13-232-57-187.ap-south-1.compute.amazonaws.com']
# Application definition
INSTALLED_APPS = [
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'feed',
]
MIDDLEWARE = [
'django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware',
]
ROOT_URLCONF = 'backmyitem.urls'
TEMPLATES = [
{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'DIRS': [os.path.join(BASE_DIR, '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',
'feed.views.notification_context',
],
},
},
]
WSGI_APPLICATION = 'backmyitem.wsgi.application'
# Database
# https://docs.djangoproject.com/en/1.11/ref/settings/#databases
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.postgresql_psycopg2',
'NAME': 'dbname',
'USER': 'username',
'PASSWORD': password',
'HOST': 'myammaji.cbgocwwown9z.ap-south-1.rds.amazonaws.com',
'PORT': '5432'
}
}
# Password validation
# https://docs.djangoproject.com/en/1.11/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/1.11/topics/i18n/
LOGIN_REDIRECT_URL = '/report'
LANGUAGE_CODE = 'en-us'
TIME_ZONE = 'Asia/Kolkata'
USE_I18N = True
USE_L10N = True
USE_TZ = True
# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/1.11/howto/static-files/
EMAIL_BACKEND = 'django.core.mail.backends.smtp.EmailBackend'
EMAIL_HOST = 'smtp.gmail.com'
EMAIL_PORT = 587
EMAIL_HOST_USER = 'saifulcseng@gmail.com'
EMAIL_HOST_PASSWORD = 'N@sara0806196'
EMAIL_USE_TLS = True
STATIC_ROOT = os.path.join(BASE_DIR, "..", "static")
STATIC_URL = '/static/'
MEDIA_ROOT = os.path.join(BASE_DIR, "..", "media")
MEDIA_URL = '/media/'
STATICFILES_DIRS = [
os.path.join(BASE_DIR, "static"),
]我的数据库，用户名和密码都是准确的，因为我已经在本地服务器上对其进行了测试。
假设两个实例在同一个 VPC(如默认 VPC(或路由/对等 VPC 中运行：
确保您创建了两个单独的安全组，一个用于 EC2 实例，一个用于 RDS 实例。将入站安全组规则添加到 RDS SG，并允许来自 EC2 的 SG 的传入 PostgreSQL 连接 (5432/tcp(。
如果您通过 AWS 控制台执行所有操作，则将自动应用所有适当的出站规则。
有关 RDS 网络的更多信息：https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_VPC.Scenarios.html#USER_VPC.Scenario1