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Atlanta Docker Meetup - 26June14 - Flynn
 

Atlanta Docker Meetup - 26June14 - Flynn

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  • It’s pretty rough right now. When I was experimenting with it, there were some WTF moments.
  • It’s pretty rough right now. When I was experimenting with it, there were some WTF moments.

Atlanta Docker Meetup - 26June14 - Flynn Atlanta Docker Meetup - 26June14 - Flynn Presentation Transcript

  • Build your own PAAS with Flynn Jonathan Manuzak @jonmanuzak
  • Docker is great… … but normal people need glue. Pain-relief As A Service?
  • The Project • A modular, open-source PAAS • Based on Jeff Lindsay’s Dokku – ‘The smallest PAAS implementation you’ve ever seen’ • Heavily inspired by Heroku • Open source project launched in early 2013 • Became not so open in late 2013 • Asked for sponsorship from the community
  • The People Jonathan Rudenberg Daniel Siders Jeff Lindsay
  • The Tech • A lot of Go goodness • Service discovery is a core component • CLI means happy devs and ops teams • Can run persistent ‘appliances’ • Unix tool philosophy
  • The Tech • Layer 0 – flynn-host - The Flynn host service – discoverd - The Flynn service discovery system • Layer 1 – flynn-controller - Controller for the management of applications running via an HTTP API – flynn-bootstrap - Bootstraps Flynn Layer 1 – gitreceived - An SSH server made specifically for accepting git pushes – flynn-cli - Command-line Flynn HTTP API client – flynn-receive - Flynn’s git deployer – slugbuilder - A tool using Docker and Buildpacks to produce a Heroku-like slug – Slugrunner - A Docker container that runs Heroku-like slugs produced by slugbuilder. – flynn-dev- Flynn development environment in a VM – strowger -Flynn TCP/HTTP router – shelf - A simple, fast HTTP file service – Sdutil - Service discovery utility for systems based on go-discover – flynn-postgres - Flynn PostgreSQL database appliance – taffy - Taffy pulls repos and deploys them to Flynn
  • DEMO
  • What just happened? • Push repo to Flynn • Flynn compiles a slug • Hosts the slug on a file server • Launches slug in docker container(s) • Wires routes and starts load balancer
  • The slugrunner • Obligatory Dockerfile • Runner executes the slug and registers services • Heavy Heroku inspiration – Installs java, python, ruby, git
  • Model Cement -> Elmers
  • Rough around the edges • Difficult to manage remote clusters from CLI • Web interface needs polish and features – Can’t delete apps? • Scaling across multiple hosts isn’t configurable • Not much fault tolerance
  • Packed with potential • Small reusable components • Not difficult to imagine Flynn managing containers rather than “apps”
  • That’s all folks