Docker Compose应用

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Docker Compose应用

下载安装并测试docker-compose

$ curl -L "https://github.com/docker/compose/releases/download/1.23.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
$ chmod +x /usr/local/bin/docker-compose
$ docker-compose --version
docker-compose version 1.23.2, build 1110ad01

创建composeapp项目

$ mkdir compose && cd compose
$ touch Dockerfile
$ cat Dockerfile
# Version 0.0.1
# This is docker compose test
FROM python:2.7
MAINTAINER Hadeian
ADD . /compose
WORKDIR /compose
RUN pip install -r requirements.txt

创建一个app.py项目

$ cat app.py
from flask import Flask
from redis import Redis
import os
app = Flask(__name__)
redis = Redis(host="redis_1",port=6379)
@app.route('/')
def hello():
    redis.incr('hits')
    return 'Hello Docker Book reader! I have been seen{0}     times'.format(redis.get('hits'))
if __name__ == "__main__":
    app.run(host="0.0.0.0",debug=True)
$ cat requirements.txt
flask
redis

创建compose文件

$ touch docker-compose.yml
$ cat docker-compose.yml
web:
  image: test/composeapp:v1
  command: python app.py
  ports:
  - "5000:5000"
  volumes:
  - .:/composeapp
  links:
  - redis
redis:
  image: redis

使用docker-compose命令启动

$ docker-compose up (-d) # 加-d为后台运行

docker-compose常用命令使用

$ docker-compose [-f <arg>...] [options] [COMMAND] [ARGS...]
options:
    up [-d] : 创建并启动镜像容器
    ps : 列出本地docker-compose.yml文件中定义的正在运行的所有服务
    stop : 停止docker-compose.yml文件中定义的所有服务
    start : 启动docker-compose.yml文件中定义的所有服务
    restart : 重启docker-compose.yml文件中定义的所有服务
    logs : 查看compose运行服务的日志
    rm : 删除docker-compose.yml文件中定义的所有服务