Docker实践之python应用容器化

2020-06-17 06:39:19易采站长站整理

redis
requests
pymssql
pyodbc
paramiko
psutil

run.sh是运行容器时需要调用的shell脚本


python /code/app/manage.py runserver 0.0.0.0:8000

启动容器,运行刚才构建的镜像。

docker run -it -p 6500:8000 -v /home/code/webtest:/code –name web –restart always –privileged=true webtest


[root@CentOS webtest]# docker run -it -p 6500:8000 -v /home/code/webtest:/code --name web --restart always --privileged=true webtest
Performing system checks...

System check identified no issues (0 silenced).

You have 15 unapplied migration(s). Your project may not work properly until you apply the migrations for app(s): admin, auth, contenttypes, sessions.
Run 'python manage.py migrate' to apply them.

August 09, 2018 - 09:56:51
Django version 2.1, using settings 'ShiHangTool.settings'
Starting development server at http://0.0.0.0:8000/
Quit the server with CONTROL-C.

-p:把容器的8000端口映射到宿主机6500

-v:主机的目录/home/code/webtest映射到容器的目录/code

–name:给容器起个名字web,webtest是我们刚刚构建的镜像

–restart:always 容器退出时总是重启

–privileged=true:执行容器内文件需要的权限

输入 ip:6500/Home/OrderSettle-K8S/

运行成功!

五、compose

是否觉得上面的操作太过复杂,如果能自动化部署就好了。不要着急,compose能够帮到你

1.简介:

compose是docker官方开源项目,用于docker集群的快速编排。compose通过docker-compose.yml文件定义和运行一个或多个容器。是fig的升级版。

2.安装:

compose是通过python编写的,调用了docker提供的API对容器进行管理。so 可以通过python管理工具pip来安装


pip install docker-compose

3.编写docker-compose.yml文件

这是docker-compose.yml主模板格式


version: '3'
services:
web1:
build: .
image: web1
ports:
- "7500:8000"
volumes:
- /home/code/webtest:/code
privileged: true
restart: always

4.运行compose项目

将 dockerfile、requirements.txt、docker-compose.yml、app 文件夹放在同一目录,运行命令 docker-compose up


[root@CentOS webtest]# docker-compose up
Creating network "webtest_default" with the default driver
Building web1
Step 1/6 : FROM python3.6.4-dev
---> ca46b1ed99ab
Step 2/6 : COPY app /code
---> f59b9540f8ab
Removing intermediate container e987c66b51f5
Step 3/6 : COPY requirements.txt /code