At DockerCon in June, we first announced experimental support for Docker Networking. As of the 1.9 release of Docker, we are excited to announce that Docker Networking is generally available to define how your Dockerized apps connect together. Docker Networking is a feature of Docker Engine that allows you to create virtual networks and attach containers to them so you can create the network topology that is right for your application. The networked containers can even span multiple hosts, so you don’t have to worry about what host your container lands on. They can seamlessly communicate with each other wherever they are - thus enabling true distributed applications. And Networking is pluggable, so you can use any third-party networking driver to power your networks without having to make any changes to your application. Read more: http://blog.docker.com/2015/11/docker-multi-host-networking-ga/

1. Docker Networking
1.9.0

2. Goal
• Transform networking like Docker transformed compute
• Distributed application portability
• Simple for users & flexible for operations
• Built-in multi-host networking
• Pluggable networking stack
• Simple and application focussed APIs

3. Libnetwork
• Open Sourced in April
• Over 500 Pull Requests
• ~500 GitHub Stars

4. Libnetwork
• Docker’s networking library
• Implements CNM
• Enables external network & IPAM plugins
• Built-in network & IPAM drivers

5. Container Networking Model (CNM)
• Docker networking core
• Abstraction between distributed apps and the networking infra
• Manages the Network Namespace
• 100% backward compatible with legacy Docker networking

6. Container Network Model
(CNM)
• Endpoint
• Network
• Sandbox

7. Whats new in 1.9.0
• Docker network exits experimental
• New top-level UX & API : docker network
• Support for multiple micro-segmented networks
• Built-in multihost networking using VXLAN based overlay
driver
• Support for third party network plugins
• Ability to dynamically connect containers to multiple networks
• Pluggable and user-defined IP address mgmt

8. Docker
CLI
Docker
CLI
Docker
CLI
etcd consul zookeeper
Machine discovery
Multi-host networking

9. Multiple Docker Engines == Swarm
Docker
CLI
Managers
Agents
CLI
Docker Hub
Token service
etcd
consul
zookeeper
Simple FileMachine
discovery
libkv

10. PRAISE BE TO THE DEMO GODS!

11. Compose + Swarm + Networking
++ =

12. ...and these wonderful ecosystem plugins
12

13. User Guide
https://github.com/docker/docker/tree/master/docs/userguide/networking
Getting started :
og.docker.com/2015/11/docker-1-9-production-ready-swarm-multi-host-netw
http://container42.com/2015/10/30/docker-networking-reborn/
docker-machine scripts :
https://github.com/dave-tucker/docker-network-demos
Resources

14. http://github.com/docker/libnetwork
#docker-network on freenode
Thank You. Questions?