Orchestrating DockerMaking The Whale Dance

James Turnbull@kartar

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who• CTO at Kickstarter

• Advisor at Docker

• Open source chap

• Funny accent

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The Docker Book

www.dockerbook.com3

The Art of Monitoringwww.artofmonitoring.com

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Who are you folks?

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What's this all about?

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What is Docker?

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Container virtualization

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Build, ship, run

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Build once

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Run in many places

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IsolatedLayeredStandard

Content agnostic12

Docker BasicsImage & Dockerfile

ContainerThe Docker Hub

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Orchestrating DockerComposeMachineSwarm

Kubernetes and friends

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Docker ComposeBecause it's not simple to build a

stack

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Docker Compose• Fast, isolated development environments using Docker.

• Quick and easy to start.

• Manages a collection of containers.

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Installing Compose$ sudo pip install -U docker-compose$ docker-compose --version

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Compose basics• Build your apps with Dockerfile's.

• Combine applications and images with a docker-compose.yml file.

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The DockerfileFROM ubuntu:14.04RUN apt-get -yqq updateRUN apt-get -yqq install nodejs npmRUN ln -s /usr/bin/nodejs /usr/bin/nodeRUN mkdir -p /var/log/nodeappADD nodeapp /opt/nodeapp/WORKDIR /opt/nodeappRUN npm install

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The docker-compose.yml filedb: image: redis ports: - "6379"web: image: jamtur01/0redevdemo command: nodejs server.js ports: - "3000:3000" links: - db

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Compose details• Can build images, use existing or pull images

• Can map ports, manage links and create volumes

• Still single host centric.

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Start Compose$ sudo docker-compose upCreating compose_db_1...Creating compose_web_1.... . .

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Demo

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Compose benefits• Build complex local stacks.

• Consistent and shareable.

• No more...

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Docker MachineBuilds machines

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Machine benefits• Automatically build Docker servers.

• Manage Docker servers.

• Target local and cloud nodes.

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DemoBuilding some Swarm nodes...

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Docker Swarm• Clustering (management) for Docker.

• Manage multiple Docker daemons.

• Distribute workloads.

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DemoDistributing workloads

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Service orchestration

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Kubernetes• Based on Google's container model

• Turns containers into nodes

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Mesosphere• Workload management & scheduling

• Docker is an option

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Questions?

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