我正在尝试部署一个网站,该网站的后端使用Django开发。我设置了两个Docker容器,其中包含Django实例和MySQL实例。我还在容器之间设置了网络以创建通信。问题是当我使用参数MYSQL_ROOT_PASSWORD启动MySQL容器时,Django给了我以下错误:
return Database.connect(**conn_params)
app | File "/usr/local/lib/python3.7/site-packages/pymysql/__init__.py", line 94, in Connect
app | return Connection(*args, **kwargs)
app | File "/usr/local/lib/python3.7/site-packages/pymysql/connections.py", line 325, in __init__
app | self.connect()
app | File "/usr/local/lib/python3.7/site-packages/pymysql/connections.py", line 599, in connect
app | self._request_authentication()
app | File "/usr/local/lib/python3.7/site-packages/pymysql/connections.py", line 882, in _request_authentication
app | auth_packet = _auth.caching_sha2_password_auth(self, auth_packet)
app | File "/usr/local/lib/python3.7/site-packages/pymysql/_auth.py", line 264, in caching_sha2_password_auth
app | data = sha2_rsa_encrypt(conn.password, conn.salt, conn.server_public_key)
app | File "/usr/local/lib/python3.7/site-packages/pymysql/_auth.py", line 142, in sha2_rsa_encrypt
app | raise RuntimeError("cryptography is required for sha256_password or caching_sha2_password")
app | RuntimeError: cryptography is required for sha256_password or caching_sha2_password
我已经检查3306端口在我的PC上是否可用,是的。 另一方面,如果我使用MYSQL_ALLOW_EMPTY_PASSWORD启动MySQL容器,并在settings.py中设置空白密码,则它可以正常工作。
这是我的设置。py
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.mysql',
'NAME': 'dbname',
'USER': 'username',
'PASSWORD': 'userpwd',
'HOST': 'db',
'PORT': '3306'
}
}
相反,这是我的docker-compose.yml文件
version: "3"
services:
app:
build:
context: .
container_name: app
ports:
- "8000:8000"
networks:
- backend_split
depends_on:
- db
restart: always
volumes:
- ./app:/app
command:
sh -c "python manage.py runserver 0.0.0.0:8000"
db:
image: mysql
container_name: db
expose:
- "3306"
networks:
- backend_split
environment:
- MYSQL_ROOT_PASSWORD=rootpwd
- MYSQL_DATABASE=databasename
- MYSQL_USER=username
- MYSQL_PASSWORD=userpwd
networks:
backend_split:
我一直被这个错误困扰几天。
谢谢。
答案 0 :(得分:0)
我已经自己解决了这个问题。我已经打开了各种关于此的stackOverflow主题,但是什么也没有。我搜索了“ pip install cryptography”,但棘手的地方在这里。 因此,在模拟Alpine环境的Docker中,解决方案是将以下代码行添加到Dockerfile中:
RUN apk add gcc
RUN apk add --no-cache libressl-dev musl-dev libffi-dev
RUN pip install --no-cache-dir cryptography==2.1.4
RUN apk del libressl-dev \
musl-dev \
libffi-dev
然后...运行。
答案 1 :(得分:0)
您可以通过安装此依赖项来解决此问题:
$ pip install django-cryptographic-fields
添加然后将“ cryptographic_fields”添加到您的INSTALLED_APPS设置中,如下所示:
INSTALLED_APPS = (
...
'cryptographic_fields',
)