The Docker Platform

Transcript

1. Docker platform Bence Dányi bence@danyi.me github.com/madbence April 15, 2015
2. Topics Docker engine Docker hub Docker machine Docker compose Docker swarm
3. Short history Solomon Hykes dotCloud (PaaS) internal project Open sourced in March, 2013 2015: 20000+ github stars, 900 contributors
4. Docker containers Like a VM instance Drivers LXC libcontainer (default from version 0.9) other drivers (kvm, etc.) Isolation: cgroups Memory Network CPU $ docker run --rm -p 8080:8080 -m 512m busybox nc -l -p 8080
5. Linking images Network Data --link name:alias --volumes-from name or -v host-path:path
6. Docker images
7. Docker images Read-only layers Read-write top layer Backends AUFS (file level) devicemapper (block level) btrfs (snapshot based) vfs (fallback) Images git commits
8. Dockerfiles Simple commands (ADD, RUN, CMD, etc.) $ docker build -t image-name . FROM debian:jessie RUN apt-get update && \ apt-get install htop CMD htop
9. Docker Hub hub.docker.com image registry official docker images anyone can publish (hub.docker.com/u/lennon/) automated image builds open source (you can host your own registry)
10. Docker machine Provision VMs (set up docker runtime) Drivers VirtualBox Amazon, Azure, DigitalOcean, Google Compute Engine, Softlayer, OpenStack, RackSpace, VMware IK Cloud? :) $ docker-machine create --driver virtualbox felho $ docker-machine ls $ docker-machine env felho
11. Docker compose Fig Start & link containers from .yml configuration $ docker-compose up web: build: . command: python app.py ports: - "5000:5000" volumes: - .:/code links: - redis redis: image: redis
12. Docker swarm Docker host pool -> one virtual docker host Service discovery (etcd, consul, zookeeper, static ips, etc) Strategies (random, binpack, roll your own) Filters Constraints (storage driver, execution driver, os, custom labels) Affinity (container, image, dependency, etc)
13. Demo!
14. Questions :) ?