Docker Engine From one to hundres nodes Andrea Tosatto - @_hilbert_ 07/07/2016 - 1st Docker Rome Meetup

Docker Engine From one to hundres nodes Andrea Tosatto - @_hilbert_ 07/07/2016 - 1st Docker Rome Meetup An introduction to the new Docker Engine “Swarm Mode”

Docker Engine From one to hundres nodes Andrea Tosatto - @_hilbert_ 07/07/2016 - 1st Docker Rome Meetup Why the new Docker Engine “Swarm Mode” is so cool

$ whoami > Andrea Tosatto § System and Platform Operations @ http://www.purpleocean.it/ § OpenSource Code Monkey @ https://github.com/opsfactory

$ whoami > Andrea Tosatto § https://twitter.com/_hilbert_ § https://github.com/atosatto § http://www.meetup.com/Milano-DevOps

# outline

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$ history

# orchestration without orchestrators $ cat docker-up.sh for i in {0..10} do ssh dck-dev$(printf %02d $i) \ docker run --name myapp -d myapp:latest done

# orchestration without orchestrators $ cat playbook.yml --- - name: "Provision myapp" hosts: dckdev tasks: - name: "run myapp with docker" docker: name: myapp image: myapp:latest state: started

# orchestrators without orchestration github.com/toscanini/maestro

github.com/spotify/helios # orchestrators without orchestration

# the ecosystem’s big-bang github.com/coreos/fleet

# the ecosystem’s big-bang github.com/rancher/rancher

# the ecosystem’s big-bang github.com/mesosphere/marathon

# the ecosystem’s big-bang github.com/kubernetes/kubernetes

github.com/hashicorp/nomad # the ecosystem’s big-bang

# the ecosystem’s big-bang

$ docker

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# docker swarm github.com/docker/swarm

# docker swarm # Run the consul to act as swarm key/value backend $ docker run -d -p 8500:8500 --name=consul progrium/consul -server -bootstrap # Initialize the first swarm manager $ docker run -d -p 4000:4000 swarm manage -H :4000 --replication --advertise : 4000 consul://:8500 # Initialize another swarm manager $ docker run -d -p 4000:4000 swarm manage -H :4000 --replication --advertise : 4000 consul://:8500 # Join a worker node to the cluster $ docker run -d swarm join --advertise=:2375 consul://:8500

# docker swarm

# docker swarm

# so then?!

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$ docker swarm

# docker “swarm mode” github.com/docker/swarmkit

# docker “swarm mode”

# docker “swarm mode” # init a new swarm cluster $ docker swarm init # join the node as a manager $ docker swarm join --manager :2377 # join the node as worker $ docker swarm join :2377

# docker “swarm mode” # accept a new joining manager $ docker node accept # list cluster nodes $ docker node ls

# docker “swarm mode”

# docker “swarm mode”

$ docker service

# docker “swarm mode” # cluster level overlay networking $ docker network create -d overlay # new clustered application creation $ docker service create --name --network -p # listing all the application in the cluster $ docker service ls

# docker “swarm mode” # swarmkit’s tasks !!!!! :-) $ docker service tasks # up&down scaling $ docker service update --replicas 30 # build-in routing mesh $ curl http://:/

# what’s next?

# what’s next? § docker 1.12 is still rc3 $ kubernetes 1.3 has been released with improved scaling and autoscaling support http://blog.kubernetes.io/2016/07/kubernetes-1.3-bridging-cloud-native-and-enterprise- workloads.html § hashicorp is pushing nomad claiming it can scale millions of containers on 5k hosts under 5 minutes https://www.hashicorp.com/c1m.html

# what’s next? "We believe that we can provide a better user experience by integrating orchestration features into the platform itself" Mike Goelzer, Product lead for Docker Core

# what’s next?

# thank you

# demo https://asciinema.org/a/6xvacwh5mura4zw924as9rabv