Docker 1.9 Feature Overview
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Sreenivas Makam presented an overview of Docker 1.9 features at a Docker Meetup in Bangalore on December 5, 2015. Key features included multi-host networking going to production, Docker Swarm going to production, storage plugin improvements, and better integration of Docker orchestration tools like Compose and Swarm. The presentation covered Docker's container networking model, libnetwork, Overlay networking, volumes, Swarm, and other changes in Docker 1.9 like Compose support for Windows and integration with Toolbox. It concluded with a demo of a multi-container counter app using Docker CLI, Compose, and Swarm.
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Docker 1.9 Feature Overview
- 1. DOCKER 1.9 OVERVIEW Presenter Name: Sreenivas Makam Presented at: Docker Meetup Bangalore Presentation Date: Dec 5, 2015
- 2. About me • Senior Engineering Manager at Cisco Systems Data Center group • Like to follow SDN and Cloud related Opensource projects and write about it. • Personal blog can be found at https://sreeninet.wordpress.com/ and my hacky code at https://github.com/smakam • You can reach me on LinkedIn at https://in.linkedin.com/in/sreenivasmakam
- 3. Docker family Docker Core(Docker engine, Network, Storage) Security(Dock er content trust) Getting started(Toolbo x, Kitematic) Orchestration( Machine, Compose, Swarm) Registry(Dock er hub, Docker trusted registry) Deployment(T utum, UCP)
- 4. Docker 1.9 feature summary • Multi-host networking going to production • Docker Swarm going to production • Storage plugin improvements • Docker Compose, Machine enhancements • Better Docker Compose, Swarm, Machine integration • Docker orchestration tools(Compose, Swarm, Machine) working well with multi-host networking • Registry, Toolbox and Docker engine enhancements • Docker content trust with Ubico hardware key(Experimental) • General Bug fixes
- 5. Docker Container networking model(CNM) • Docker container attaches to the Network using the Endpoint or Service. • Multiple endpoints share a network. In other words, only endpoints located in same network can talk to each other. • Sandbox is the network namespace where the Container resides.
- 6. Docker Libnetwork • Libnetwork is the networking library that’s separated out from Docker engine and it’s an implementation of CNM. • Drivers implement the APIs provided by libnetwork. • Docker provides native drivers like Bridge, Overlay. • Bridge driver allows connectivity between containers in a single host. Overlay driver allows for connectivity across hosts. • Remote drivers are provided as plugins from different vendors like Weave, Calico, Cisco.
- 7. Docker Overlay networking Web H1 Db H2 Consul Network n1 docker $(docker-machine config mh-keystore) run -d -p "8500:8500" -h "consul" progrium/consul -server -bootstrap docker-machine create -d virtualbox --engine-opt="cluster-store=consul://$(docker- machine ip mh-keystore):8500" --engine-opt="cluster-advertise=eth1:2376" mhs-demo1 docker-machine create -d virtualbox --engine-opt="cluster-store=consul://$(docker- machine ip mh-keystore):8500" --engine-opt="cluster-advertise=eth1:2376" mhs-demo2 docker network create --driver overlay n1 docker run -ti --name=web -- net=n1 busybox docker run -ti --name=db --net=n1 busybox
- 8. Docker volume • Enhanced volume plugin in 1.9. • Volumes are used to store data that’s outside scope of container image like database. • Supported volume plugins – GlusterFS, Ceph, Flocker Example: docker run -ti -v myvolume:/data --volume- driver=flocker busybox sh • Myvolume in host machine gets mounted to /data with Flocker volume driver. • Multiple containers can share myvolume
- 9. Docker Swarm • Swarm is production ready with 1.9. • Swarm is integrated with docker-machine, docker-compose, multi-host networking and docker volumes. • Tested with scale(1000 nodes and 30000 containers)
- 10. Other changes in 1.9 • Docker compose(release 1.5) works with Windows and with Toolbox. • Docker compose works with multi-host networking. • Docker Toolbox for Mac and Windows has all Docker orchestration tools integrated. • Docker registry has a new Google storage driver and other bug fixes. • Docker engine has some minor features and bug fixes. • Docker content trust has hardware key support(experimental release) in collaboration with Yubico.
- 11. Demo (Multi-container counter app) Web Mongo Swarm Compose Web client Docker CLI H2 H1 web: image: bfirsh/compose-mongodb-demo environment: - "MONGO_HOST=counter_mongo_1" - "constraint:node==mhs-demo0" ports: - "80:5000" mongo: image: mongo Consul docker-compose --x-networking --project- name=counter up -d
- 12. References • https://docs.docker.com/ • https://github.com/docker/libnetwork • https://docs.docker.com/engine/userguide/networkin g/get-started-overlay/ • https://blog.docker.com/2015/11/docker-1-9- production-ready-swarm-multi-host-networking/ • https://blog.docker.com/2015/11/dockercon-eu- 2015-docker-universal-control-plane/ • https://blog.docker.com/2015/11/docker-content- trust-yubikey/ • https://sreeninet.wordpress.com/category/docker/
Editor's Notes
- #13: Microsoft Confidential