无法在生产服务器中连接 Amazon RDS，但在本地服务器上连接
Unable to connect Amazon RDS in production server but connect on local server
我正在使用 Amazon Postgre RDS。当我在我的本地服务器上连接这个 RDS 时，它工作得很好，但是当我将它推到 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?
我的 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，因为我在本地服务器上测试过。
假设两个实例 运行 在同一个 VPC（如默认 VPC）或 routed/peered 个 VPC 中：
确保您已经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。向 RDS SG 添加入站安全组规则，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，将自动应用所有正确的出站规则。
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
我正在使用 Amazon Postgre RDS。当我在我的本地服务器上连接这个 RDS 时，它工作得很好，但是当我将它推到 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?
我的 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，因为我在本地服务器上测试过。
假设两个实例 运行 在同一个 VPC（如默认 VPC）或 routed/peered 个 VPC 中：
确保您已经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。向 RDS SG 添加入站安全组规则，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，将自动应用所有正确的出站规则。
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