Docker Swarm on Mesos - Speaker Deck

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Docker Swarm on Mesos @tnachen - @vieux

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Agenda • Docker Swarm introduction • Docker Swarm on Mesos • How to setup Docker Swarm on DCOS • DEMO

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Running containers on multiple hosts

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Docker CLI Docker CLI Docker CLI Today

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Docker CLI Docker CLI Swarm With Docker Swarm

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Swarm in a nutshell • Exposes several Docker Engines as a single virtual Engine • Serves the standard Docker API • Extremely easy to get started • Batteries included but swappable

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Timeline Oct Nov Dec Jan Feb Jun Proof of Concept DockerCon EU Open Repository First Release Candidate Swarm Beta Release Global Hack Day Open Proposal 0.2.0 Release 0.3.0 Release experimental mesos integration Apr Aug 0.4.0 Release Nov 0.5.0 Release stable mesos integration

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Bring the Docker workflow on a Mesos Cluster

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+ Mesos CLI Mesos Agents + + + + + + + + + + + + + Mesos Masters Marathon Mesos Cluster

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+ Mesos CLI Mesos Agents + + + + + + + + + + + + + Mesos Masters Marathon Docker CLI Mesos Cluster + Docker Swarm

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+ Mesos CLI Mesos Agents + + + + + + + + + + + + + Mesos Masters Marathon Docker CLI shipyard kitematic compose Mesos Cluster + Docker Swarm

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Swarm Scheduler 2 steps: • 1- Apply filters to exclude nodes/offers - ports - constraints - affinity - health - dependency • 2- Use a strategy to pick the best node/offer - binpack - spread - random

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Resource Management • Memory $ docker run -m 1g … • CPU $ docker run -c 1 … • Ports $ docker run -p 80:80 …

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Scheduling parameters • Constraints docker run -e “constraint:node==agent-04” … docker run -e “constraint:region==us-east” … • (anti-)Affinities docker run --name redis-master redis docker run --name redis-slave -e “affinity:container!=redis*” …

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Why Docker Swarm + Mesos? Scalable to 10,000s of nodes Benefit from Mesos features / APIs Mesos + Docker Ecosystem Docker client experience

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Swarm

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Mesosphere Universe

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Install: dcos package install swarm Setup: eval $(dcos swarm env) Run: docker run -c 1 busybox ls

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Demo docker-compose on DCOS

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http://github.com/docker/swarm http://mesosphere.com/learn #docker-swarm on freenode @tnachen - @vieux Thank You. Questions?