Docker Swarm

What's news in Docker Swarm since the alpha release

Transcript

1. Docker Swarm
   @vieux - @docker
   Docker Meetup at 500 Startups
   

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2. Running containers on
   multiple hosts
   

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3. Today
   Docker
   CLI
   Docker
   CLI
   Docker
   CLI
   

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4. Introducing Docker Swarm
   us-west us-east
   Docker
   CLI
   Docker
   CLI
   Swarm
   

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5. Swarm in a nutshell
   • Docker REST API (>80%)
   • Resource management (CPU, Mem, Networking)
   • Advanced scheduling with constraints and affinities
   • Multiple Discovery Backends (hub, etcd, consul, zookeeper)
   • TLS: Encryption & Authentication
   Soon: Health check & Rebalancing
   

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6. Timeline
   Oct
   Nov
   Dec
   Jan
   Feb
   Jun
   Proof of Concept
   DockerCon EU
   Open Repository
   First Release Candidate
   Swarm Beta Release
   Swarm 1.0
   Global Hack Day
   Open Proposal
   

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7. Setup using the hosted discovery service
   • Create a cluster:
   $ swarm create
   • Add nodes to a cluster:
   $ swarm join --add= token://
   • Start Swarm
   $ swarm manage --addr= token://
   Or you can use your own etcd, zookeeper or consul
   Contributions are welcome
   :
   

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8. Resource Management
   • Memory
   $ docker run -m 1g …
   • CPU
   $ docker run -c 1 …
   • Ports
   $ docker run -p 80:80 …
   • More to come, ex: network interfaces
   

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9. Constraints
   • Standard constraints induced from docker info
   docker run -e “constraint:operatingsystem==*fedora*” …
   docker run -e “constraint:storagedriver==*aufs*” …
   • Custom constraints with host labels
   docker -d --label “region==us-east”
   docker run -e “constraint:region==us-east” …
   • Pin a container to a specific host
   docker run –e “constraint:node==ubuntu-2” …
   

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10. Affinities
    • Containers affinities
    docker run --name web nginx
    docker run -e “affinity:container==web” logger
    • Containers Anti-affinities
    docker run --name redis-master redis
    docker run --name redis-slave -e “affinity:container!=redis*” …
    • Images affinities
    docker run -e “affinity:image==redis” redis
    

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11. Swarm Scheduler
    2 steps:
    • 1- Apply filters to exclude nodes
    - ports
    - labels
    - health
    • 2- Use a strategy to pick the best node
    - random
    - binpack
    - spread
    Contributions are welcome
    :
    

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12. Swarm Beta: Integrations
    • Fully integrated with Machine
    • Partially integrated with Compose
    • Mesos integration has started in collaboration with Mesosphere.
    

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13. Demo
    us-west us-east
    Docker
    CLI
    Docker
    CLI
    = RAM: 2GB
    CPU: 1core
    Swarm
    

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14. http://github.com/docker/swarm
    #docker-swarm on freenode
    @vieux
    Thank You.
    

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