DockerCon US 2015 - Engine Breakout Session

Nov 18, 20150 likes230 views

Arnaud Porterie

Docker maintainers Michael Crosby & Arnaud Porterie on the latest news on Docker Engine, for DockerCon US 2015.

Agenda
• Engine quick facts
• What’s new in Docker Engine 1.7.0
• What’s coming next
- Demo!
• Q&A

Engine quick facts
What’s the Docker Engine?

Engine quick facts
• Central piece of the Docker platform
- Docker daemon + docker CLI
• Engine by the numbers
- 963 contributors
- 71 pull requests on average merged each week
• https://github.com/docker/docker/

What’s new in Engine 1.7.0
A tour of the major new features

Experimental binary
• A new flavor of the Docker engine
- Built and distributed nightly
- Bleeding edge features: we want your feedback!
• First experimental features
- New networking model
- Network plugins
- Volume plugins
• https://experimental.docker.com

Network stack
• Introducing libnetwork
- Whole new API (Container Networking Model)
• A much needed technical effort
- Solid ground for better default batteries
- Single extension point for alternative batteries
• https://github.com/docker/libnetwork/

Better network performance
• docker -d --userland-proxy=false
- Huge performance improvement for port publishing
• Not the default
- Relies on Hairpinning
- Introduced in 2.6.32, still an issue on some distros

And many more!
• ZFS storage driver
• docker build --cpu-quota …
• docker build https://github.com/x/y#branch
• docker exec -u|--user
• …

Better tooling
• Community wants choices
- Push/pull without Docker (and vice-versa)
- Containers without the daemon
- …
• Objective: spin-out runtime, builder, trust, …

Security
• Trusted image distribution
• User namespaces
• Syscall filtering with seccomp
- Already supported by libcontainer
• Engine security profiles
- Simple way to express security constraints
- Single file for capabilities, AppArmor, seccomp, …

Networks & volumes management
• Top-level network concept
- Already in experimental
• Similar top-level volume concept
- Currently in design
$ docker network create --driver d net1 
$ docker run --publish-service=svc.net1 my_image
$ docker volume create --driver d vol1 
$ docker run -v vol1 my_image

Thank you
Arnaud Porterie / @icecrime
Michael Crosby / @crosbymichael

The document summarizes a Docker Engine breakout session that covered: - An overview of Docker Engine, including key facts about its contributors and development. - New features in Docker Engine 1.7.0, including an experimental binary, a new networking model, and improved network performance. - Upcoming priorities like better tooling, security enhancements, and improved management of networks and volumes. A demo was also planned to showcase Docker Engine capabilities.

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