Тарас Кирилюк — Docker basics. How-to for Drupal developers
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Docker для чайників. Просто про складне. Використання для локальної розробки. Як Docker може спростити автоматизацію CI Workflow. Досвід використання на реальних Drupal проектах.
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Тарас Кирилюк — Docker basics. How-to for Drupal developers
- 1. Docker basics. How-to For Drupal devs
- 2. Hi @here! I am Taras Kyryliuk I am here because I have been using Docker for almost a Year and have something to say about it 2 Disclaimer: I am a Drupal developer and automation maniac
- 3. Overview ▹ Software isolation ▹ Introducing Docker ▹ Docker in Drupal development 3
- 5. Why we need Software Isolation? Starting from the assumption that software will always have bugs, we need a way to isolate and neutralize the effects of the bugs… © internet 5
- 6. 6 Virtualization Operating system-level Containers OpenVZ, Solaris Zones, lxc, libcontainer Hardware-level Virtual machines KVM, Xen, VMware, VirtualBox, xhyve
- 7. Operating system-level virtualization - Containerisation ▹Limited overhead ▹Do not require a hypervisor layer ▹Allow a greater density of containers to run on a host ▹Can be complex, hard to set up, and difficult to manage and automate ▹Can run the same or a similar guest operating system as the host machine 7
- 9. Hardware virtualization ▹Large overhead because of hypervisor layer ▹Easy to run and manage ▹Can run any operating system 9
- 12. ” Docker is an open-source engine that automates the deployment of applications into containers. 12
- 13. ” Docker containers wrap a piece of software in a complete filesystem that contains everything needed to run: code, runtime, system tools, system libraries – anything that can be installed on a server. This guarantees that the software will always run the same, regardless of its environment. https://www.docker.com/what-docker 13
- 14. ▹The Docker client and server ▹Docker Images ▹Registries ▹Docker Containers 14 Docker components
- 16. “Images are the building blocks of the Docker world.” https://www.dockerbook.com Ways to create images: ▹ Building an image from a Dockerfile ▹ Updating and committing an image Docker images16
- 17. 17 Building an image from a Dockerfile
- 18. 18 Building an image from a Dockerfile $ docker build -t tutorial/nginx .
- 19. Updating and committing an image Run container: $ docker run -t -i training/sinatra /bin/bash Install what you need: $ root@0b2616b0e5a8:/# apt-get install -y ruby2.0-dev $ root@0b2616b0e5a8:/# gem2.0 install json Commit changes: $ docker commit -m "Added json gem" -a "Kate Smith" 0b2616b0e5a8 ouruser/sinatra:v2 https://docs.docker.com/engine/tutorials/dockerimages/ 19
- 20. ▹Docker Hub (public and private repositories) ▹Own private registry ▹Hosted private registry Docker registries20
- 22. Container ports magic22 Host OS 8080 Container with Nginx 80
- 23. 3. Docker in Drupal development What problems we can solve using it. 23
- 24. Docker use cases ▹Use container as a Service ▹Use container as a tool ▹Run one host Drupal project with Docker Compose ▹Run own cloud with Docker Swarm 24
- 25. Container as a Service (MySQL as an example) Run: $ docker run -d --name=example-mysql --env="MYSQL_ROOT_PASSWORD=mypassword" mysql Get IP: $ docker inspect example-mysql Install Mysql Client: $ apt-get install mysql-client Profit: $ mysql -uroot -pmypassword -h 172.17.0.20 -P 3306 mysql> 25 http://severalnines.com/blog/mysql-docker-containers-understanding-basics
- 26. Container as a Service (MySQL as an example)26 http://severalnines.com/blog/mysql-docker-containers-understanding-basics
- 27. Use container as a tool (PHPUnit as an example)27 https://hub.docker.com/r/phpunit/phpunit/ cd to folder with tests and Run: $ docker run -v $(pwd):/app --rm phpunit/phpunit run Profit! ▹ No need to install ▹ Choose any version ▹ Can use different versions for different projects
- 28. DEV-STAGE-PROD env with Docker Compose ▹ Compose is a tool for defining and running multi-container Docker applications. ▹ With Docker Compose, we define a set of containers to boot up, and their runtime properties, all defined in a YAML file. 28
- 30. DEV-STAGE-PROD env with Docker Compose You should have set of Compose-files for different environments. ▹ docker-compose.yml ▹ docker-compose.override.yml ▹ docker-compose.dev.yml ▹ docker-compose.ci.yml ▹ docker-compose.prod.yml Run site with different commands. Local: $ docker-compose up -d Dev: $ docker-compose -f docker-compose.yml -f docker-compose.dev.yml up -d See more: https://docs.docker.com/compose/extends/ 30
- 31. Own cloud with Docker Swarm mode ▹ Since Docker 1.12 it supports clustering out of the box ▹ It turns a pool of Docker hosts into a single virtual Docker host More: https://docs.docker.com/engine/swarm/ 31
- 32. By the way! You can forget about server provisioning! All you need is Docker installed on any Linux distro! 32
- 33. 33 Questions?
- 34. THANK YOU! You can find me at: taras.kiriluk tkiriluk@gmail.com 34