1. 目录结构
- django-devops-uwsgi 目录是打包 uWSGI 和 Django 的镜像编译文件。在镜像中安装 uWSGI、pip、virtualenv等必要的程序包。在使用镜像创建容器时，执行 start.sh 脚本， 创建 Python 虚拟运行环境，从 Django 的 requirements.txt 安装依赖包，最后启动 uWSGI 监听端口，等待请求。
- django-devops-compose/www/app 目录，用于放置 Django 的代码。需要说明的是：为了减少工程的目录层级，通过改造，将 url、settings 等与工程全局相关的文件移动到了根目录。
- django-devops-compose/www/conf 目录，用于存放 uWSGI 配置和环境变量。这里的环境变量有 pip 源地址等。
- django-devops-compose/www/env 目录用于存放 virtualenv 创建的 Python 虚拟环境。这是为了避免，每次启动容器时，都需要重新安装依赖包，加快容器启动时间。
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└── django-devops-uwsgi
│ ├── Dockerfile
│ └── start.sh
├── django-devops-compose
│ ├── docker-compose.yml
│ └── www
│ ├── app
│ │ ├── manage.py
│ │ ├── requirements.txt
│ │ ├── settings.py
│ │ ├── static
│ │ ├── urls.py
│ │ ├── wsgi.py
│ ├── conf
│ │ ├── common.env
│ │ ├── uwsgi.ini
│ ├── env
│ ├── log
│ │ ├── mysql
│ │ └── uwsgi
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2. Dockerfile
镜像文件：django-devops-uwsgi/Dockerfile
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FROM centos:7
RUN yum -y install epel-release
RUN yum -y install gcc
RUN yum -y install python-devel python-pip mysql-devel
RUN pip install --upgrade pip
RUN pip install virtualenv
RUN yum -y install pcre pcre-devel pcre-static
RUN yum -y clean all
RUN mkdir /var/www
COPY ./start.sh /
RUN chmod +x /start.sh
CMD ["/start.sh"]
EXPOSE 8000
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启动脚本文件：django-devops-uwsgi/start.sh
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#!/usr/bin/bash
echo "python virtual env ------ start"
cd /var/www
virtualenv ./env
source ./env/bin/activate
pip install uwsgi --index=http://${PYPI_SOURCE} --trusted-host ${PYPI_SOURCE%%/*}
echo "python virtual env ------ end"
echo "install requirements.txt ------ start"
echo "pypi source, ${PYPI_SOURCE}"
/var/www/env/bin/pip install -r /var/www/app/requirements.txt --index=http://${PYPI_SOURCE} --trusted-host ${PYPI_SOURCE%%/*}
echo "install requirements.txt ------ end"
cd /var/www/app
echo "syncdb ------ start"
python manage.py syncdb
echo "syncdb ------ end"
echo "migrate ------ start"
python manage.py migrate
echo "migrate ------ end"
echo "uwsgi ------ start"
uwsgi --master --ini /var/www/conf/uwsgi.ini
echo "uwsgi ------ end"
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docker-compose.yml 配置文件:django-devops-compose/docker-compose.yml
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version: '2'
services:
nginx:
build: ../django-devops-nginx/
volumes:
- ./www/:/var/www/
links:
- uwsgi
ports:
- "80:80"
expose:
- "80"
uwsgi:
# image: djangodevops_uwsgi
build: ../django-devops-uwsgi/
privileged: true
env_file:
- ./www/conf/common.env
volumes:
- ./www/:/var/www/
depends_on:
- mysql
# - redis
# - rabbitmq
links:
- mysql
# - redis
# - rabbitmq
ports:
- "8000:8000"
expose:
- "8000"
mysql:
image: mariadb
restart: always
ports:
- "3306:3306"
expose:
- "3306"
volumes:
- ./www/mysql/:/var/lib/mysql/
environment:
- MYSQL_ROOT_PASSWORD=root
- MYSQL_DATABASE=app
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环境变量文件：django-devops-compose/www/conf/common.env
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# Set environment
# APP_NAME=app
# DATABASE_NAME=app
# MYSQL_USER=root
# MYSQL_PASSWORD =
PYPI_SOURCE=mirrors.aliyun.com/pypi/simple
# PYPI_SOURCE=pypi.douban.com/simple
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uSWGI 配置文件：django-devops-compose/www/conf/uwsgi.ini
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[uwsgi]
chmod-socket=666
socket = uwsgi:8000
chdir = /var/www/app/
logto = /var/www/log/uwsgi/uwsgi.log
module = wsgi:application
py-autoreload = 1
master = 1
processes = 2
threads = 2
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3. 常用的一些命令
启动容器，Console 推出时，容器停止。
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docker run -p 800:80 imagename
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后台启动容器，不占用 Console，后台运行。
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docker run -d -p 800:80 imagename
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启动容器，并通过 ssh 登陆
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docker run -it --rm imagename /bin/bash
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批量停止容器
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docker stop $(docker ps -q)
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批量重启容器
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docker restart $(docker ps -q)
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批量删除容器
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docker rm $(docker ps -a -q)
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批量删除 :镜像
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docker rmi $(docker images -f "dangling=true" -q)
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批量删除镜像
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docker rmi $(docker images -q)
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