Docker Uncovered / PHPNW 2016
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What is Docker? How does it compare Chef/Vagrant/Ansible? Should I be using it? Is it still cool? All these questions and many more besides will be answered in this no-holds-barred look into the technology that is still taking the world by storm. During the talk we'll discover what Docker is and how it can be integrated into your workflow. Using a simple app, we'll walk through the process of dockerify a project and it's dependencies. We'll also look at some common pitfalls such as managing your data in a container and running multiple projects on a single host. If you are looking to manage all your projects in a simple and consistent way, or just want to know what all the hype is about, come along and discover the hidden secrets of Docker.
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Docker Uncovered / PHPNW 2016
- 1. DOCKER UNCOVERED John Cleary / #PHPNW16 / @TheRealBifter
- 2. What is Docker? Images and Volumes Docker Hub What is Docker? Use Cases How it works, terminology and architecture. Getting started & Command line tools Dockifing an app -> introducing docker-compose Docker In Development Use Cases Docker Cloud Docker In Production DOCKER UNCOVERED Docker Uncovered
- 3. What is Docker? Docker Uncovered
- 5. Container 3 Processes Memory Network File System… Container 1 Processes Memory Network File System… Container 2 Processes Memory Network File System… LINUX CONTAINERS Linux Host Processes Memory Network File System… Docker Uncovered
- 6. Redis 3.0 Processes Memory Network File System… PHP 7.0 Processes Memory Network File System… MySql 5.7 Processes Memory Network File System… LINUX CONTAINERS TCP/IP Docker Uncovered Linux Host Processes Memory Network File System…
- 7. DOCKER IS… • Managing Linux* hosts/machines • Starting and stopping containers • Managing container file system (volumes) • Managing container images A SET OF TOOLS FOR Docker Uncovered
- 8. DOCKER ALSO PROVIDE… • Managing Images (Docker Hub) • Managing Hosts (Docker Cloud) ONLINE SERVICES FOR: Docker Uncovered
- 9. Docker Uncovered WHERE DOES DOCKER FIT IN?
- 10. A BRIEF HISTORY OF WEB COMPUTING that may not actually be that accurate 1992 Dedicated Server 1996 Shared Hosting 2006 Cloud Computing 2014 Docker Docker Uncovered
- 11. Docker in Development Docker Uncovered
- 12. Docker Uncovered
- 13. Docker Uncovered DOCKER TERMINOLOGY Infrastructure Operating System Docker Engine Container Container Volume Volume docker docker-compose docker-machine Command Line Docker Hub Images Images Images
- 15. DOCKERIZING A PHP APP Docker Uncovered • PHP • MYSQL • REDIS
- 19. Docker in Production Docker Uncovered
- 20. Docker Uncovered
- 21. Docker Uncovered
- 24. IN SUMMARY: Docker Uncovered • CONTAINERS, IMAGES, VOLUMES • DOCKER HUB • IN DEVELOPMENT • HELLO WORLD & DOCKERIZING AN APP • DOCKER IN PRODUCTION
- 25. FURTHER READING: Docker Uncovered • DOCKER SWARM • KUBERNETES* • BEST PRACTICES *GIANTSWARM.IO SIGNUP CODE #PHPNW16
Editor's Notes
- been using docker for less than a year not even been to a docker con these are my experiences, that of my teammates there will be some code! there will be a live demo !!! fell free to contribute to the discussion, add observations who is using docker at work (dev or prod)?
- Molly Dock (pictured above), otherwise known as #763 (Ross, California)
- What are Linux Containers? - lets explain with example
- - each container has its own (separate) processes, memory - even users All containers use the same Kernel separate network adapter (different IPs)
- - each container has its own (separate) processes, memory - even users All containers use the same Kernel separate network adapter (different IPs)
- Command line tools starting and stopping containers managing container’s file systems (volumes) managing container images (push/pull) managing hosts
- Docker Hub - just like github for images
- if you're watching closely: looks like a VM? Most like: Vagrant + Chef/Ansible Virtual Box on dev we want fast & be similar to production
- components getting smaller / cheaper handing over the decision on what to install to dev dev-ops-dev (developers choose which kit) dev-ops-ops (ops decide where it runs, scaling, redundancy,resilience, Dev Ops begins with Cloud Computing DO-Devs / DO-Ops starts with Docker (devs take back power to decide what, ops decide how)
- Molly Dock (pictured above), otherwise known as #763 (Ross, California)
- In Development Use Cases: If you currently use vagrant and/or virtual box (or vm ware) if you don't ! If work on multiple projects (different versions of mysql, php etc) If your project has multiple dependencies (Redis, Mongo, Memcached etc) Microservices / SOA Don’t use Docker if: Everything is ticking over nicely thank you very much (yack shaving is expensive) your not using Linux
- not shown - images are made up of layers
- docker-machine status docker-machine start docker run ubuntu /bin/echo "Hello World" docker ps docker run -d -p 80:80 --name php-hello-world -v "$PWD":/var/www/html php:7.0-apache
- - the basic, but not its strength
- tell docker how to start multiple containers networks them all together inside the machine
- Is Docker Ready for production? Are you and your company ready for Docker ? containers - yes docker - its complicated
- Why would you use it? Docker eco-system is good: Hub -> official images Documentation Tools Cloud + Swarm App is a package (OS + App Code + Config) Utilisation Why Not? Still very new, new problems
- create an automated build check build settings check tags
- Add a Node (bring your own) Add a Stack (stackfile looks like compose file) show multiple stacks via ha proxy
- swarm- multiple hosts acting as a single host + some tricks kubernets - like swarm, not docker native, v powerful. Handles volumes well (a container problem) signup code best practices: one process per container keep ‘em small