Eine Einführung in Docker
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This document provides an introduction to Docker. It discusses how Docker adds packaging, distribution and a simple interface to existing container technologies like LXC and namespaces/cgroups. Docker allows building images from applications and libraries and running containers from those images. The Docker architecture includes a client, daemon, images and containers. A demo is provided of building an image and running a container. Attendees are encouraged to try Docker for its benefits of speed, portability and as building blocks for microservices architectures.
Eine Einführung in Docker
- 1. Eine Einführung in Docker DevOps Conference – 01.06.2015 Matthias Lübken the product guy @luebken
- 3. Giant Swarm •Simple way to get your containers running •Currently in alpha •Looking for feedback https://giantswarm.io/request-invite/
- 5. Agenda • App container • Container technologies • And Docker? • Docker concepts • Demo
- 6. Why are we so excited?
- 7. #1 Speed
- 10. App container?
- 11. Docker is an open platform for developers and sysadmins of distributed applications.” “
- 12. Docker is an open-source project to easily create lightweight, portable, self-sufficient containers from any application.” “
- 15. App containers!
- 16. Technologies
- 18. Control Groups •A unified interface for controlling processes •Resource limitation •Priorization •Accounting •Controling •CPU Time, System memory, Disk bandwidth, Network bandwidth, Monitoring
- 19. Namespaces •Provide varying views on the system •To provide isolated environments •6 Namespaces: PID, NET, IPC, MNT, UTS, User
- 20. LXC • Leverages Kernel features: namepaces & cgroups • User-land tools: lxc-create, lxc-start, lxc-info • Docker used to use LXC
- 21. Union Filesystem • Files and directories of separate file systems • Transparently overlaid • Forming a single coherent file system. • Copy-on-write • Different options AuFS, Btrfs, OverlayFS, DeviceMapper
- 22. What does Docker add?
- 26. packaging & distribution simple interface Docker adds
- 27. Docker concepts
- 30. Architecture Docker Client $ docker build $ docker run $ docker push Docker Daemon Container A Container B Container C Client Host …
- 31. Architecture Docker Client $ docker build $ docker run $ docker push Docker Daemon Container A Container B Container C Client Host Image ‘ Image ‘’ Image ‘’’ Registry $ docker push $ docker pull … …
- 32. On my Mac Docker Client $ docker build $ docker run $ docker push Docker Daemon Container A Container B Container C Client Host Image ‘ Image ‘’ Image ‘’’ Registry $ docker push $ docker pull hub.docker.com … …
- 33. Demo
- 35. dockerbook.com
- 36. So should I start with Docker?
- 37. YES
- 38. Containers are 1% of your problem”“ Kelsey Hightower, CoreOs
- 39. Request an invite at https://giantswarm.io Matthias Lübken the product guy @luebken
- 40. Giant Swarm •Simple way to get your containers running •Currently in alpha •Looking for feedback https://giantswarm.io/request-invite/