桃園市教育局Docker技術入門與實作
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This document summarizes the key topics covered in Day 2 of a Docker and container technology introduction and hands-on course, including: 1) An overview of Docker Hub and how it relates to GitHub for automatically building images 2) Basic Git commands 3) Configuring automatic builds on Docker Hub by linking a GitHub repository 4) Docker network and volume commands, and exercises using these commands 5) Using Docker Compose to run multiple connected containers defined in a compose file 6) A demonstration of running TensorFlow using Docker
![Dockerfile
範例：
FROM debian:jessie
MAINTAINER docker "docker@nginx.com"
RUN apt-get update && apt-get install -y nginx
CMD ["nginx", "-g", "daemon off;"]](https://image.slidesharecdn.com/106dockerday2-170708035011/85/Docker-16-320.jpg)
桃園市教育局Docker技術入門與實作
- 2. 今日課程 1. Docker Hub 介紹 2. Git 基本操作 3. Docker Hub Auto-build image 4. Docker Network、Docker Volume 指令 5. 單一電腦多容器操作 6. Docker Compose 基本指令 7. Docker Compose 實際操作及使用情境 8. Docker + Qemu 模擬 Raspberry Pi Raspbian
- 3. 1. Docker Hub 介紹
- 4. Docker Hub = App Store ● 公開 Docker Registry ● 只允許存放一個私有映像檔 ● Auto-build & Webhook ● Security Scanning 是付費功能 ●
- 5. GitHub & Docker Hub
- 8. 2. Git 基本操作
- 9. Git by Linus Torvalds ● VCS tool ● Open source community protocol ● GitHub, Bitbucket, GitLab…... Linux 和 Git 都是我搞 出來的！
- 10. Install Git ● sudo apt-get install git ● Git cmd for windows ● SourceTree is best choice! ● GitHub is a git web-UI and repository. ● Git 教室
- 15. 3. Docker Hub Auto-build
- 16. Dockerfile 範例： FROM debian:jessie MAINTAINER docker "[email protected]" RUN apt-get update && apt-get install -y nginx CMD ["nginx", "-g", "daemon off;"]
- 17. Git 操作流程 1. git init or init on GitHub. 2. git add Dockerfile 3. git commit -m “First init” 4. git remote add origin https://github.com/YOURNAME/docker_build.git 5. git push origin master
- 20. 4.1 Docker Network 指令
- 21. TCP/IP Foundation www.google.com, www 是 hostname, google.com 是 domain name. Localhost: 127.0.0.1 TCP/UDP Port: 0-65535 = 2^16, but 0 是保留不可使用的連接埠 Private IP: 10.0.0.0/8 172.16.0.0/12 ~ 172.31.0.0/12 192.168.0.0/16
- 23. Docker 內建 Network Drivers ● Bridge ● Overlay ● MACVLAN ● Host ● None 不要再使用 “link”, 改用 network. Docker Reference Architecture: Designing Scalable, Portable Docker Container Networks Docker Plug-In Network Drivers ● weave ● calico Docker Plug-In IPAM Drivers ● infoblox
- 24. 練習一 $ docker network ls $ ifconfig $ docker run -ti --rm busybox sh cat /etc/hosts, ifconfig $ docker network inspect bridge $ docker run -itd --name=container1 busybox $ docker run -itd --name=container2 busybox $ docker exec -ti container2 sh ping -w3 172.17.0.2, ping container1
- 25. 練習二 $ docker network create vlan_1 $ docker network inspect vlan_1 $ ifconfig | more $ docker run --network=vlan_1 -itd --name=container3 busybox $ docker network inspect vlan_1 $ docker run --network=vlan_1 -itd --name=container4 busybox $ docker exec -ti container4 sh ping -w3 172.17.0.2, ping container1, ping container3
- 26. 練習三 $ docker network create wp_db $ docker pull mysql:5.7 $ docker pull wordpress $ docker run -d --name db --network=wp_db -e MYSQL_ROOT_PASSWORD=wordpress -e MYSQL_DATABASE=wordpress -e MYSQL_USER=wordpress -e MYSQL_PASSWORD=wordpress mysql:5.7 $ docker run -d --name wp -p 80:80 --network=wp_db -e WORDPRESS_DB_HOST=db:3306 -e WORDPRESS_DB_PASSWORD=wordpress wordpress
- 27. 練習四 $ docker network create -d macvlan --subnet=10.0.0.0/24 --gateway=10.0.0.1 -o parent=eth0 mvnet $ docker run -itd --name c1 --net mvnet --ip 10.0.0.5 busybox $ docker run -it --name c2 --net mvnet --ip 10.0.0.6 busybox sh ping -c 4 10.0.0.5 ip a show eth0, ip route Get started with Macvlan network driver
- 28. 4.2 Docker Volume 指令
- 29. Shared data volume commands Manage data in containers
- 30. Exercise $ docker volume create --name composewp_db_data $ docker pull mysql:5.7 $ docker pull wordpress $ docker run -d --name db --network=wp_db -e MYSQL_ROOT_PASSWORD=wordpress -e MYSQL_DATABASE=wordpress -e MYSQL_USER=wordpress -e MYSQL_PASSWORD=wordpress -v composewp_db_data:/var/lib/mysql mysql:5.7 $ docker run -d --name wp -p 80:80 --network=wp_db -e WORDPRESS_DB_HOST=db:3306 -e WORDPRESS_DB_PASSWORD=wordpress wordpress
- 31. 5. 單一電腦多容器操作
- 33. 安裝 Docker Compose sudo curl -L "https://github.com/docker/compose/releases/download/1.9.0/ docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose 然後 sudo chmod +x /usr/local/bin/docker-compose docker-compose -v
- 34. Docker Compose 指令 (1/2) Commands: build Build or rebuild services bundle Generate a Docker bundle from the Compose file config Validate and view the compose file create Create services down Stop and remove containers, networks, images, and volumes events Receive real time events from containers exec Execute a command in a running container help Get help on a command kill Kill containers logs View output from containers pause Pause services port Print the public port for a port binding
- 35. Docker Compose 指令 (2/2) Commands: ps List containers pull Pull service images push Push service images restart Restart services rm Remove stopped containers run Run a one-off command scale Set number of containers for a service start Start services stop Stop services unpause Unpause services up Create and start containers version Show the Docker-Compose version information
- 36. Compose 檔案說明 一次執行多個容器，建構完整服務 必須是 docker-compose.yml 相同目錄：docker-compose up -d Docker 會自動建置包含 Dockerfile 的子目錄 支援 Docker Network, Volume 1.13 版本支援 Swarm mode. Quickstart: Compose and WordPress Kompose = Kubernetes + Compose
- 38. Compose File Sample (1/2) version: '2' services: db: image: mysql:5.7 volumes: - db_data:/var/lib/mysql restart: always environment: MYSQL_ROOT_PASSWORD: wordpress MYSQL_DATABASE: wordpress MYSQL_USER: wordpress MYSQL_PASSWORD: wordpress
- 39. Compose File Sample (1/2) wordpress: depends_on: - db image: wordpress:latest ports: - "8000:80" restart: always environment: WORDPRESS_DB_HOST: db:3306 WORDPRESS_DB_PASSWORD: wordpress volumes: db_data: *** nslookup wordpress ***
- 40. Compose ＆ Wordpress ● 水平擴展 wordpress：scale
- 41. Microservices Java Worker Docker Birthday #3 training
- 42. Microservices .NET Worker Docker Birthday #3 training
- 44. Docker Compose & CI/CD GitHub, CircleCI, Docker Hub = GitLab Testing level? Coding effort? Env. build-up effort?
- 45. End to End Tests CI with Docker Compose is easy to implement. From: Oreilly - Building Microservices
- 47. Test Double 測試方法
- 48. 新 Compose 測試方法 The Same
- 52. 8. Docker & Qemu & Raspberry Pi Raspbian
- 53. How to build a base image Cross-compiler 1. Building ARM containers on x86 machine 2. Qemu-static-Docker IoT CI/CD 3. Using GPIO with Docker RPi & Docker
- 54. 1. sudo apt-get install qemu-user-static 2. docker pull philipz/rpi-raspbian 3. docker run -ti -v /usr/bin/qemu-arm-static:/usr/bin/ qemu-arm-static philipz/rpi-raspbian bash 4. apt-get update 5. uname -a QEMU 模擬 ARM 裝置
- 56. 9. 展示以 Docker 執行 TensorFlow
- 57. Docker + TensorFlow + GPU ● Machine Learning, Deep Learning ● TensorFlow Docker images ● nvidia-docker, All-in-one DL image Deep Learning
- 58. 10. 課程最後結語
- 59. Still No Silver Bullet 容器只是其中一個關鍵，並非全部. DevOps pipeline 軟體開發流程 Microservices微服務，或其他架構 Infrastructure as Code Business model
- 62. Exercise & Self-learning 1. Docker Basic - Katacoda by Philipz 2. Docker Trainning 3. Docker Free self-paced courses 4. Docker Tutorials and Labs Online Self-learning Offical Online Lab Scalable Microservices with Kubernetes - Udacity
- 65. Hope You Love Docker So long!