我在渲染上部署 Django 应用程序时遇到问题。我使用了渲染 Postgres 数据库,该数据库已过期并被删除。所以,这就是为什么我尝试使用 Docker 化数据库,这样它就不会受到任何时间限制和终生的数据库可访问性。将 Django 应用程序容器化后,它在我的本地计算机上运行良好,我可以将其推送到 docker hub 上。无论如何,因为我的应用程序是通过主分支预先部署和配置的。我遇到这个错误:
OperationalError at /
could not translate host name "db_social" to address: Name or service not known
Request Method: GET
Request URL: https://network-project-5q7j.onrender.com/
Django Version: 5.0
Exception Type: OperationalError
Exception Value:
could not translate host name "db_social" to address: Name or service not known
Exception Location: /opt/render/project/src/.venv/lib/python3.11/site-packages/psycopg2/__init__.py, line 122, in connect
Raised during: network.views.index
Python Executable: /opt/render/project/src/.venv/bin/python3.11
Python Version: 3.11.3
Python Path:
['/opt/render/project/src',
'/opt/render/project/src/.venv/bin',
'/opt/render/project/python/Python-3.11.3/lib/python311.zip',
'/opt/render/project/python/Python-3.11.3/lib/python3.11',
'/opt/render/project/python/Python-3.11.3/lib/python3.11/lib-dynload',
'/opt/render/project/src/.venv/lib/python3.11/site-packages']
Server time: Fri, 23 Aug 2024 10:12:12 +0000
这是我在渲染时得到的。
我想分享我的
docker-compose.yml
version: "3.11"
services:
db_social:
image: postgres
volumes:
- ./data/db_social:/var/lib/postgresql/data
environment:
- POSTGRES_DB=social
- POSTGRES_USER=postgres
- POSTGRES_PASSWORD=qnr63363
web:
build: .
command: python manage.py runserver 0.0.0.0:8000
volumes:
- .:/code
ports:
- "8000:8000"
depends_on:
- db_social
我的
dockerfile
在这里:
FROM python:3.11
ENV PYTHONUNBUFFERED=1
WORKDIR /code/
COPY requirements.txt /code/
RUN pip install -r requirements.txt
COPY . /code/
这是我的
settings.py
文件的数据库配置。
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.postgresql',
'NAME': 'social',
'USER': 'postgres',
'PASSWORD': 'qnr63363',
'HOST': 'db_social',
'PORT': '5432',
}
# {
# 'ENGINE': 'django.db.backends.postgresql_psycopg2',
# 'NAME': 'postgres',
# 'USER': 'postgres',
# 'HOST': '127.0.0.1',
# 'PORT': '5432',
# 'PASSWORD': 'qnr63363'
# }
}
我是不是跳过了什么?有什么问题吗?
您应该将
container_name
设置为您的服务,尤其是数据库服务。如果您不这样做,它将创建一个派生名称,您将无法期望它成为您所期望的样子。
...
services:
db_social:
image: postgres
container_name: db_social
...