docker-compose部署redis,flask

第一步：新建flask项目 app.py

vim app.py

# 书写以下内容
from flask import Flask
from redis import Redis
import os

app = Flask(__name__)
redis = Redis(host='redis', port=6379)
@app.route('/')
def hello(): 
    redis.incr('hits')
    return '你好! 查看 %s 次\n' % (redis.get('hits'))


if __name__ == "__main__":
    app.run(host="0.0.0.0", port=5000, debug=True)

---

第二步：编写Dockerfile

# 用于构建flask项目的镜像

vim Dockerfile

# 书写以下内容
FROM python:3.9
WORKDIR /app
COPY . /app
RUN pip install flask redis -i https://pypi.tuna.tsinghua.edu.cn/simple
EXPOSE 5000
CMD [ "python", "app.py" ]

---

第三步：编写docker-compose的yml文件 docker-compose.yml

vim docker-compose.yml

# 书写以下内容
version: "3"
services:
  redis:
    image: redis
  web:
    build:
      context: .
      dockerfile: Dockerfile
    ports:
      - 8080:5000
    environment:
      REDIS_HOST: redis

---

第四步：启动docker-compose

docker-compose up

---

测试

# 访问项目
10.0.0.100:8080

# 进入web，ping redis
docker-compose exec web /bin/bash

# 下载ping
apt-get update
apt-get install inetutils-ping

ping redis