Docker容器化部署Python应用(centos+python+redis+mysql+uwsgi+nginx)
一、MySQL容器
拉取步骤
这里我们拉取官方的镜像,标签为5.7 docker pull mysql:5.7 使用mysql镜像运行容器 docker run -p 3306:3306 --name mymysql -v $PWD/MySQL/conf.d:/etc/mysql/conf.d -v $PWD/MySQL/logs:/logs -v $PWD/MySQL/data:/var/lib/mysql -e MYSQL_ROOT_PASSWORD=123456 -d mysql:5.7 命令说明: -p 3306:3306:将容器的3306端口映射到主机的3306端口 -v $PWD/conf/my.cnf:/etc/mysql/my.cnf:将主机当前目录下的conf/my.cnf挂载到容器的/etc/mysql/my.cnf -v $PWD/logs:/logs:将主机当前目录下的logs目录挂载到容器的/logs -v $PWD/data:/mysql_data:将主机当前目录下的data目录挂载到容器的/mysql_data -e MYSQL_ROOT_PASSWORD=123456:初始化root用户的密码 查看容器启动情况 docker ps -a
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安装成功后进入数据库操作
④进入容器 docker exec -it 容器id或名称 /bin/bash 注:容器开启的状态下 cd /root/ 切换到容器的家目录下,ls可以查看是否有sql文件 ⑤连接数据库 mysql -uroot –p密码 如:mysql -uroot –ppassword ⑥创建库 create database tesudrm charset=utf8; show databases; 查看库是否创建成功 ⑦注意:导入文件需要在容器的内部,而不是在数据库mysql中执行 退出mysql:Ctrl+D cd /root/ 切换到容器的家目录下面执行导入sql文件 mysql -uroot -ppassword tesudrm< tesudrm.sql 进入到数据库中:mysql –uroot –ppassword use tesudrm; show tables; ⑧退出mysql以及mysql容器 Ctrl+P+Q 或 exit
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二、Centos7安装python应用
1.1 建立Dockerfile
vim Dockerfile
FROM centos/python-36-centos7 MAINTAINER bobby USER root ADD hello.py /home/ #一个简单的flask程序,将当前目录下的py文件添加到容器的/home下 ADD hello.ini /home/ #uwsgi配置文件 ADD entry-point.sh /home/ #shell脚本 WORKDIR /home # 下载程序安装包 RUN pip install flask -i http://mirrors.aliyun.com/pypi/simple/ --trusted-host mirrors.aliyun.com RUN pip install uwsgi -i http://mirrors.aliyun.com/pypi/simple/ --trusted-host mirrors.aliyun.com RUN pip install flask_sqlalchemy -i http://mirrors.aliyun.com/pypi/simple/ --trusted-host mirrors.aliyun.com RUN pip install pymysql -i http://mirrors.aliyun.com/pypi/simple/ --trusted-host mirrors.aliyun.com # 或者 RUN pip install -r requirements.txt ENTRYPOINT [ "/bin/bash", "/home/entry-point.sh"] #ENTRYPOINT uwsgi --ini /home/hello.ini #CMD ["uwsgi","--ini", "/home/hello.ini"] #启动uwsgi
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vim entry-point.sh #启动文件
if [ -e /debug1 ]; then echo "Running app in debug mode!" python /home/hello.ini else echo "Running app in production mode!" uwsgi --ini /home/hello.ini tail -f /home/hello.ini fi
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vim hello.ini #uwsgi配置文件
[uwsgi] # htmlWeb.py文件所在目录 #plugins = python3 chdir = /home callable = app # flask文件名 wsgi-file= hello.py # 进程数 processes = 4 # 使用5000端口 http = 0.0.0.0:5000 # 日志输出目录 #daemonize = /home/hello.log pidfile = /home/project-master.pid
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vim hello.py #flask程序
from flask import Flask from flask_sqlalchemy import SQLAlchemy # import pymysql app = Flask(__name__) app.config['SQLALCHEMY_DATABASE_URI'] = "mysql+pymysql://root:123456@192.168.234.134/dockerpro" # app.config['SQLALCHEMY_DATABASE_URI'] = "mysql+mysqlconnector://root:123456@ip/dockerpro" #配置flask配置对象中键:SQLALCHEMY_COMMIT_TEARDOWN,设置为True,应用会自动在每次请求结束后提交数据库中变动 app.config['SQLALCHEMY_COMMIT_TEARDOWN'] = True app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = True app.config['SQLALCHEMY_COMMIT_ON_TEARDOWN'] = True #获取SQLAlchemy实例对象,接下来就可以使用对象调用数据 db = SQLAlchemy(app) #创建模型对象 class User(db.Model): id = db.Column(db.Integer, primary_key=True) username = db.Column(db.String(80), unique=True, nullable=False) email = db.Column(db.String(120), unique=True, nullable=False) def __repr__(self): return '<User %r>' % self.username @app.route("/") def index(): # db.session.query(User).filter(User.username=='aaa').first() email = User.query.filter_by(username='aaa').first() print(email.email) return """ <h1>Python Flask in Docker!</h1> <p>A sample web-app for running Flask inside Docker.</p> <p>Email: %s.</p> """% email.email if __name__ == "__main__": # 1.创建表 # db.create_all() app.run(debug=True, host='0.0.0.0')
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docker build -t docker-flask:0.1 . #拉取镜像
docker run -d –name flaskapp –restart=always -p 5000:5000 docker-flask:0.1 #运行容器
这时候访问 ip:5000 就可以了
三、nginx容器
用来做反向代理:
# 拉取镜像 docker pull nginx #运行容器 docker run -p 80:80 --name mynginx -v /home/hello_nginx.conf:/etc/nginx/nginx.conf -v $PWD/logs:/wwwlogs -d nginx
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nginx配置文件
#创建配置文件 vim hello_nginx.conf # 内容 user nginx; worker_processes 1; error_log /var/log/nginx/error.log warn; pid /var/run/nginx.pid; events { worker_connections 1024; } http { include /etc/nginx/mime.types; default_type application/octet-stream; log_format main '$remote_addr - $remote_user [$time_local] "$request" ' '$status $body_bytes_sent "$http_referer" ' '"$http_user_agent" "$http_x_forwarded_for"'; access_log /var/log/nginx/access.log main; sendfile on; #tcp_nopush on; keepalive_timeout 65; #gzip on; include /etc/nginx/conf.d/*.conf; server { listen 80; server_name ip; #charset koi8-r; #access_log logs/host.access.log main; location / { # proxy_pass http://127.0.0.1:5000; proxy_pass http://ip:5000; proxy_redirect off; proxy_set_header Host $http_host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header X-Forwarded-Proto $scheme; } } }
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四、打包自定义镜像上传阿里云
6.1 先关闭容器:docker stop 容器ID 6.2 基于当前容器重新创建镜像
docker commit -m “描述” -a “root” -p 容器id 镜像名称:版本号
如:docker commit -m “centos6.8_python3.4” -a “root” -p 容器id en_centos:2.2
–p 表示提交时停止容器 –a 提交镜像的作者 -m 提交时的说明文字
6.3 创建阿里云账号
https://cr.console.aliyun.com/cn-hangzhou/instances/repositories
6.4 登录阿里云账号
docker login –username=zgs1121 registry.cn-hangzhou.aliyuncs.com
password:**********
6.5 将镜像上传到阿里云的镜像仓库
docker tag 镜像ID registry.cn-hangzhou.aliyuncs.com/tesu/仓库名(en_centos)
docker push registry.cn-hangzhou.aliyuncs.com/tesu/仓库名(en_centos)
6.6 拉取镜像
docker pull registry.cn-hangzhou.aliyuncs.com/tesunet/en_centos
6.7 命名镜像
docker tag registry.cn-hangzhou.aliyuncs.com/tesunet/en_centos 新镜像名称
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