在 Render.com 上部署网站期间遇到服务器错误 (500),且没有明确的错误消息

问题描述 投票:0回答:1

在 Render.com 上部署期间,我遇到服务器错误 (500),但在日志中未收到任何警告或错误。有趣的是,只有不与数据库交互的页面才能成功加载,这表明数据库权限或连接配置存在潜在问题。不幸的是,由于缺乏详细的错误消息,因此很难查明问题的确切原因。寻求见解和解决方案来解决此部署问题。

from pathlib import Path
import os
import dj_database_url

# Build paths inside the project like this: BASE_DIR / 'subdir'.
BASE_DIR = Path(__file__).resolve().parent.parent


# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/5.0/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!

SECRET_KEY = os.environ.get('SECRET_KEY', default='your secret key')

# SECURITY WARNING: don't run with debug turned on in production!

DEBUG = 'RENDER' not in os.environ

ALLOWED_HOSTS = []

RENDER_EXTERNAL_HOSTNAME = os.environ.get('RENDER_EXTERNAL_HOSTNAME')

if RENDER_EXTERNAL_HOSTNAME:
    ALLOWED_HOSTS.append(RENDER_EXTERNAL_HOSTNAME)

# Application definition

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'catalogoApp',
]

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'whitenoise.middleware.WhiteNoiseMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
]

ROOT_URLCONF = 'panelBM.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [],
        '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 = 'panelBM.wsgi.application'


# Database
# https://docs.djangoproject.com/en/5.0/ref/settings/#databases

DATABASES = {
    'default': dj_database_url.config(
        # Feel free to alter this value to suit your needs.
        default='postgresql://postgres:postgres@localhost:5432/mysite',
        conn_max_age=600
    )
}


# Password validation
# https://docs.djangoproject.com/en/5.0/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/5.0/topics/i18n/

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_TZ = True


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/5.0/howto/static-files/

STATIC_URL = 'static/'

if not DEBUG:    # Tell Django to copy statics to the `staticfiles` directory
    # in your application directory on Render.
    STATIC_ROOT = os.path.join(BASE_DIR, 'staticfiles')

    STATICFILES_STORAGE = 'whitenoise.storage.CompressedManifestStaticFilesStorage'

# Default primary key field type
# https://docs.djangoproject.com/en/5.0/ref/settings/#default-auto-field

DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'

MEDIA_ROOT = BASE_DIR / "files"
MEDIA_URL = "/media-files/"

起初我遇到了 staticFiles 文件夹的警告问题,但我用命令 py manage.pycollectstatic 解决了它,然后我遇到了服务器错误(500)的问题,我尝试将 ALLOWED_HOSTS 更改为 ['*'] ,但没有成功。

django database webdeploy render.com
1个回答
0
投票

看起来您已将数据库 URL 硬编码到本地主机数据库:

DATABASES = {
    'default': dj_database_url.config(
        # Feel free to alter this value to suit your needs.
        default='postgresql://postgres:postgres@localhost:5432/mysite',

在生产中,您需要使用生产渲染数据库的 URL。

听起来您的 Django Web 服务Postgres DB 都部署在 Render 上。如果您将它们部署在同一区域,则 Web 服务可以使用数据库的“内部 URL”连接到数据库:https://docs.render.com/databases#connecting-with-the-internal-url

否则,您必须使用数据库的“外部 URL”。

重要提示:使用环境变量

您不想将数据库连接字符串放入代码中,因为它包含密码。

相反,您可以将数据库连接字符串放入环境变量中。所以你的代码可能看起来像这样:

DATABASES = {
    'default': dj_database_url.config(
        default=os.environ["DB_URL"],

然后

  1. 在您的本地开发环境(例如您的笔记本电脑?)中,您需要设置
    DB_URL
    环境变量。
  2. 在渲染时,您需要在 Web 服务上设置
    DB_URL
    环境变量。具体方法如下:https://docs.render.com/configure-environment-variables
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