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Four pillars of DevOps - John Shaw - Agile Cambridge 2014

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Slides presented at Agile Cambridge 2014 http://agilecambridge.net/ac2014/sessions/index.php?session=57

Session Description:

The emerging practice of DevOps is a natural extension to established Agile methods. The choice of tooling to support the practices is important and will influence heavily how rapid, repeatable and reliable live deployments might be.

Three of the four pillars are concerned with automation through tooling but, arguably, the fourth pillar is more important than the other three together. The fourth pillar is at the heart of the Agile Manifesto: people.

The "Gold Rush" for DevOps is dominated by vendors and the push to sell their wares. But it is people who use the tools, people who define, develop and assure the software, and people who manage the services after they have gone live. One of the cornerstones of DevOps is breaking down the walls between development teams and operations; too much tool specialisation will lead to further separation and even the introduction of yet another silo.

This talk will cover four pillars to DevOps: Environments, Deployment, Testing and People. The insights brought together in this talk were gained under commercial engagements with government clients, on development of financial systems responsible for management of funding in the adult education sector.

Published in: Software
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Four pillars of DevOps - John Shaw - Agile Cambridge 2014

  1. 1. Agile Cambridge 2014, John Shaw The Four Pillars of DevOps: Agility for the Enterprise
  2. 2. 2 Copyright © Capgemini 2014. All Rights Reserved The Four Pillars of DevOps | Agile Cambridge 2014 DevOps: Definitions “DevOps is the practice of operations and development engineers participating together in the entire service lifecycle, from design through the development process to production support.” – http://theagileadmin.com/what-is-devops/ “DevOps is the blending of tasks performed by a company's application development and systems operations teams.” – http://searchcloudcomputing.techtarget.com/definition/DevOp “DevOps (development and operations) is an enterprise software development phrase used to mean a type of agile relationship between Development and IT Operations. The goal of DevOps is to change and improve the relationship by advocating better communication and collaboration between the two business units.” – http://www.webopedia.com/TERM/D/devops_development_operations.html
  3. 3. TOOLS!
  4. 4. DevOps Platform Deployment Testing
  5. 5. DevOps Platform Deployment Testing People
  6. 6. 6 Copyright © Capgemini 2014. All Rights Reserved The Four Pillars of DevOps | Agile Cambridge 2014 Automation: Continuous Delivery
  7. 7. 7 Copyright © Capgemini 2014. All Rights Reserved The Four Pillars of DevOps | Agile Cambridge 2014 Deployment Pipeline Automate Everything!
  8. 8. 8 Copyright © Capgemini 2014. All Rights Reserved The Four Pillars of DevOps | Agile Cambridge 2014 Factors Measure Dev: time from requirement to release candidate Months ↔ Days Ops: time from release candidate to live Days ↔ Minutes Budget for investment £ ↔ £££ Cost saving return Never ↔ Now Product value return (time to market) Never ↔ Now Automate Everything! Which bits? OFF ON OFF ON OFF ON OFF ON OFF ON
  9. 9. 9 Copyright © Capgemini 2014. All Rights Reserved The Four Pillars of DevOps | Agile Cambridge 2014 Pillar 1: Platform Tools Infrastructure Containers Environment configuration State??
  10. 10. 11 Copyright © Capgemini 2014. All Rights Reserved The Four Pillars of DevOps | Agile Cambridge 2014 Pillar 2: Deployment Continuous integration Deployment Push-button Triggered Scheduled Roll-back Software configuration
  11. 11. 12 Copyright © Capgemini 2014. All Rights Reserved The Four Pillars of DevOps | Agile Cambridge 2014 Pillar 3: Testing Purpose > Test Type Acceptance Regression Assurance Smoke Tests Most Important Tests Functional Performance Exploratory Frequency Continuous integration Ad-hoc Daily (overnight) Per sprint Weekly (weekend) Per release •Manual •Push-button •Triggered •Scheduled
  12. 12. 14 Copyright © Capgemini 2014. All Rights Reserved The Four Pillars of DevOps | Agile Cambridge 2014 Pillar 4: People
  13. 13. 15 Copyright © Capgemini 2014. All Rights Reserved The Four Pillars of DevOps | Agile Cambridge 2014 Pillar 4: People – The Phoenix Project
  14. 14. 16 Copyright © Capgemini 2014. All Rights Reserved The Four Pillars of DevOps | Agile Cambridge 2014 Development (Software Engineering) Quality Assurance (QA) Technology Operations DevOps Pillar 4: People – DevOps Communication Paths
  15. 15. Specialists Generalists DevOps? Manager Organisational Tensions Specific technologies Person Role 1 1 Person Role * *
  16. 16. 18 Copyright © Capgemini 2014. All Rights Reserved The Four Pillars of DevOps | Agile Cambridge 2014 Pillar 4: People – Organise by Capabilities Development Quality Assurance Technology Operations DevOps? •Fits hierarchical org model •Clear specialties •Clear responsibilities •Communication barriers •Organisational •Domain language •Innovation barriers •Handovers
  17. 17. 19 Copyright © Capgemini 2014. All Rights Reserved The Four Pillars of DevOps | Agile Cambridge 2014 Products Specialists Pillar 4: People – Organise by Expert Support Development Quality Assurance Technology Operations DevOps? Dev Ops QA DevOps?
  18. 18. 20 Copyright © Capgemini 2014. All Rights Reserved The Four Pillars of DevOps | Agile Cambridge 2014 Pillar 4: People – Dreyfus Model
  19. 19. 21 Copyright © Capgemini 2014. All Rights Reserved The Four Pillars of DevOps | Agile Cambridge 2014 Pillar 4: People – DevOps Engineer TOOLS! DevOps Engineer must support self service!
  20. 20. Conway’s Law Any organization that designs a system (defined broadly) will produce a design whose structure is a copy of the organization's communication structure. Performance for the organisation Performance for teams Organisational Tensions
  21. 21. 23 Copyright © Capgemini 2014. All Rights Reserved The Four Pillars of DevOps | Agile Cambridge 2014 Pillar 4: People – Domain Driven Design
  22. 22. 24 Copyright © Capgemini 2014. All Rights Reserved The Four Pillars of DevOps | Agile Cambridge 2014 Pillar 4: People – Organise by Domain Strategic Product is key to business Rapid turn-around Constant pipeline Attracts investment Adapts to business Unstable Custom software Supporting Important to business Less investment Stable Business may adapt to capability of the product Packages Other Not a business priority Well established Outsource
  23. 23. Standardisation Innovation Cost savings (bottom line) Benefit (top line) Organisational Tensions Both require investment!
  24. 24. 26 Copyright © Capgemini 2014. All Rights Reserved The Four Pillars of DevOps | Agile Cambridge 2014 Dev Conclusion – Organise by Product Ops •Change Management •Operational Monitoring •Specialists Dev: Product 1 •Dev & support Dev: Product 2 •Dev & support Dev: Product 3 •Dev & support App Support •All supporting products Team 1 •On demand Team 2 •On demand Outsourced Other •Tactical •Training = staff mobility = change in priority = product manager Dev: Team 3 •Transition Mission Critical Supporting frequent
  25. 25. 27 Copyright © Capgemini 2014. All Rights Reserved The Four Pillars of DevOps | Agile Cambridge 2014 Development (Software Engineering) Quality Assurance (QA) Technology Operations Team Team Development (Software Engineering) Quality Assurance (QA) Technology Operations Conclusion – DevOps Communication Paths Mission Critical Product Team performs all roles Supporting Team focussed on dev
  26. 26. 28 Copyright © Capgemini 2014. All Rights Reserved The Four Pillars of DevOps | Agile Cambridge 2014 Conclusion – DevOps is… DevOps is an approach to streamlining the deployment and operation of a product on the production platform. This is enabled through removing barriers to communication, providing self-service operations and automation of steps for a rapid, repeatable and reliable product delivery pipeline. A DevOps Engineer is a master of this approach and an expert on the tools that enable the automation of the pipeline, preferably operating in a coaching capacity.
  27. 27. 29 Copyright © Capgemini 2014. All Rights Reserved The Four Pillars of DevOps | Agile Cambridge 2014 Summary Organisational Tensions People Priorities
  28. 28. www.capgemini.com The information contained in this presentation is proprietary. © 2014 Capgemini. All rights reserved. Rightshore® is a trademark belonging to Capgemini. About Capgemini With more than 130,000 people in over 40 countries, Capgemini is one of the world's foremost providers of consulting, technology and outsourcing services. The Group reported 2013 global revenues of EUR 10.1 billion. Together with its clients, Capgemini creates and delivers business and technology solutions that fit their needs and drive the results they want. A deeply multicultural organization, Capgemini has developed its own way of working, the Collaborative Business ExperienceTM, and draws on Rightshore ®, its worldwide delivery model. We’re hiring! http://www.uk.capgemini.com/careers John.Shaw@capgemini.com @johnfcshaw

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