我的本地主机没有问题,我的电脑运行良好但在docker中没有运行,并且此错误
已连接
def get_database_connection():
"""connects to the MySQL database and returns the connection"""
return mysql.connector.connect(
host=config.MYSQL_HOST,
user=config.MYSQL_USERNAME,
passwd=config.MYSQL_PASSWORD,
db = config.MYSQL_DB_NAME,
port=config.MYSQL_PORT,
charset='utf8'
)
config.py
MYSQL_HOST = "localhost"
MYSQL_USERNAME = "root"
MYSQL_PASSWORD = ""
MYSQL_PORT = 3306
MYSQL_DB_NAME = "newsdb"
----------错误--------
** Operational MODE: preforking ***
build Tables
error --- > 2003 (HY000): Can't connect to MySQL server on 'localhost' (99)
WSGI app 0 (mountpoint='') ready in 0 seconds on interpreter 0x55e5696d31a0 pid: 10 (default app)
uWSGI running as root, you can use --uid/--gid/--chroot options
*** WARNING: you are running uWSGI as root !!! (use the --uid flag) ***
项目结构
app
├── admin
│ ├── api.py
│ ├── config.py
│ ├── db.py
│ ├── __init__.py
│ ├── routes.py
│ ├── static
│ └── templates
├── config.py
├── db.py
├── error_handlers.py
├── __init__.py
├── robots
│ ├── robot_runner.py
│ └── robots.py
├── routes.py
├── schema.sql
├── static
│
├── templates
└── test
Dockerfile
FROM tiangolo/uwsgi-nginx-flask:python3.8
COPY . /app
RUN python -m pip install --upgrade pip
COPY ./requirements.txt /var/www/requirements.txt
RUN apt update && apt install -qy libmariadbclient-dev gcc
RUN pip3 install -r /var/www/requirements.txt
此项目在我的本地主机上运行,没有问题...只想运行图像docker show error并且不连接到mysql ..
Dockerfile
不包含带有映像的MySQL服务器。容器的最佳做法是在每个容器中保留一个服务,因此,将容器化的MySQL服务运行将意味着运行两个单独的容器-一个用于Web应用程序,另一个用于MySQL服务器。docker-compose是处理此用例的合理方法。指定一个包含您的服务定义的docker-compose.yml
:
version: '2.0'
services:
web:
build: .
ports: [ "5000:5000" ]
links: [ "mysql" ]
mysql:
image: mysql
[... some other configuration parameters to set up the database root account ...]
volumes: [ "mysqldata:/var/lib/mysql" ]
volumes: { mysqldata: {} }
这里引用的MySQL映像是official MySQL image on Docker Hub。此后,您可以在应用程序的配置文件中连接到“ mysql”,而不是“ localhost”。
或者,将您的应用程序配置文件指向设置了数据库的已经运行的MySQL服务。请记住,容器中的
localhost
不是您的本地计算机,而是容器。您可能需要appropriately configure Docker networking,容器才能访问您的计算机或MySQL主机。