[英]How to dockerize my flask web app with mysql database?Cannot connect mysql and cannot found render templete
I am new to docker and trying to deploy this web app but cannot find solution.我是 docker 新手,正在尝试部署此 Web 应用程序,但找不到解决方案。 I'm running windows 10 and Docker Desktop.
我正在运行 Windows 10 和 Docker 桌面。 My docker-version is 19.03.5 and docker-compose version 1.25.4, build unknown.
我的 docker-version 是 19.03.5 和 docker-compose 版本 1.25.4,构建未知。
My directory structure is:我的目录结构是:
-docker-compose.yml
-app
-static
js/
script.js
css/
style.css
-templates
-index.html
-app.py
-dockerfile
-requirements.txt
-db
-init.sql
docker-compose.yml docker-compose.yml
version: "2"
services:
app:
build: ./app
links:
- db
ports:
- "5000:5000"
db:
image: mysql:5.7
ports:
- "32000:3306"
environment:
MYSQL_ROOT_PASSWORD: root
volumes:
- ./db:/docker-entrypoint-initdb.d/:ro
dockerfile文件
FROM python:3.6
EXPOSE 5000
RUN mkdir -p /app
RUN ls /app
COPY static /app/static
COPY templates /app/templates
COPY app.py /app
COPY requirements.txt /app
WORKDIR /app
RUN pip install -r requirements.txt
CMD python app.py
requirements.txt要求.txt
flask
mysql-connector
app.py应用程序
from flask import Flask, render_template, request
import mysql.connector
import os
app = Flask(__name__, template_folder='/templates', static_folder='/static')
@app.route('/')
def index():
connection = mysql.connector.connect(
user = 'root',
password = 'root',
host= 'db',
port = '3306',
database = 'test'
)
cursor = connection.cursor()
cursor.execute("SELECT name from place")
names = cursor.fetchall()
return render_template('index.html', names = names)
if __name__ == '__main__':
app.run(host='0.0.0.0')
My docker command is –我的 docker 命令是 –
docker-compose up
Then trying to access http://0.0.0.0:5000/ but get mysql.connector.errors.InterfaceError: 2003: Can't connect to MySQL server on 'db:3306' and jinja2.exceptions.TemplateNotFound:然后尝试访问http://0.0.0.0:5000/但得到 mysql.connector.errors.InterfaceError: 2003: Can't connect to MySQL server on 'db:3306' and jinja2.exceptions.TemplateNotFound:
jinja2.exceptions.TemplateNotFound
jinja2.exceptions.TemplateNotFound
Your flask folder paths are wrong, it should be either an absolute path like /app/templates
and /app/static
or a relative one like templates
abnd static
.您的烧瓶文件夹路径是错误的,它应该是像
/app/templates
和/app/static
这样的绝对路径,或者像templates
abnd static
这样的相对路径。
mysql.connector.errors.InterfaceError: 2003: Can't connect to MySQL server on 'db:3306'
mysql.connector.errors.InterfaceError: 2003: 无法连接到 'db:3306' 上的 MySQL 服务器
If your init.sql script is correct then there is nothing wrong with your database, you just have let it initialize properly (wait for the mysqld: ready for connections
message) before sending your first request.如果您的 init.sql 脚本是正确的,那么您的数据库没有任何问题,您只需在发送第一个请求之前让它正确初始化(等待
mysqld: ready for connections
消息)。
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