Devops and Immutable Infrastructure with Docker
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You often hear the two titles of "DevOps" and "Immutable Infrastructure" used independently. In his session at DevOps Summit, John Willis, Technical Evangelist for Docker, will cover the union between the two topics and why this is important. He will cover an overview of Immutable Infrastructure then show how an Immutable Continuous Delivery pipeline can be applied as a best practice for "DevOps." He will end the session with some interesting case study examples.
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Devops and Immutable Infrastructure with Docker
- 1. @bglpe Devops and Immutable Infrastructure John Wills! Technical Evangelist
- 2. @bglpe @botchagalupe • a.k.a. John Willis • 35 Years in IT Operations • Exxon, Canonical, Chef, Enstratius, Socketplane • Devopsdays Core Organizer • Devopscafe on iTunes • Tweet to @bglpe for Questions
- 3. @bglpe Agenda • What is Immutable Infrastructure? • Why Immutable (Order Matters) • Models and Methods • Docker and Immutable Infrastructure • Case Studies
- 4. @bglpe
- 6. @bglpe “The least-cost way to ensure that the behavior of any two hosts will remain completely identical is always to implement the same changes in the same order on both hosts.” Order Matters
- 7. @bglpe Management Methods • Divergence • Convergence • Congruence
- 8. @bglpe Why (When) Does Order Matter? • Circular Dependancies • Right Command Wrong Order • Right Package Wrong Order
- 10. @bglpe Immutable Infrastructure “Model” • No CRUD allowed for… • Packages • Configuration Files • Application Software • Data (RUD)
- 11. @bglpe How To Do Immutable? • Provision a new server. • Test the new server. • Change the reference to the new server. • Keep the old server around for rollback.
- 12. @bglpe The Immutable “Trombone” • Golden Images • Virtual Desktop Infrastructure (VDI) • Virtual Images • Phoenix Servers vs Snowflake Servers • Infrastructure as Code • Bake vs Fry • Containers
- 13. @bglpe
- 14. @bglpe Why Docker? • Isolation • Lightweight • Simplicity • Workflow • Community
- 15. @bglpe Docker Community • 1200 Docker Contributors • 100,000 Dockerized Applications • 3 to 4 Million Developers using Docker • 300 Million Downloads • 32,000 Docker Related Projects • 70% of enterprises are using Docker
- 18. @bglpe References Docker and the Three Ways of Devops! https://blog.docker.com/2015/05/docker-three-ways-ops/! ! Trash Your Servers and Burn Your Code: Immutable Infrastructure and Disposable Components! Chad Fowler June 2013! http://chadfowler.com/blog/2013/06/23/immutable-deployments/! ! PhoenixServer! Martin Fowler July 2012! http://martinfowler.com/bliki/PhoenixServer.html! ! Building with Legos! http://techblog.netflix.com/2011/08/building-with-legos.html! ! Immutable Infrastructure with Docker and EC2": Gilt at Dockercon (Video)! http://tech.gilt.com/post/90578399884/immutable-infrastructure-with-docker-and-ec2! ! Why you should build an Immutable Infrastructure! by Florian Motlik - 2014-07-22! https://blog.codeship.com/immutable-infrastructure/! ! Baked Servers vs Fried Servers! http://if.andonlyif.net/blog/2012/10/baked-servers-vs-fried-servers.html! ! Why Order Matters: Turing Equivalence in Automated Systems Administration! https://www.usenix.org/legacy/publications/library/proceedings/lisa02/tech/full_papers/traugott/traugott_html/index.html! ! An Analysis of RPM Validation Drift! https://www.usenix.org/legacy/events/lisa2002/tech/full_papers/hart/hart.pdf!