Perforce on Tour 2015 - DevOps at Scania: Trust & Some Code
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1) DevOps at Scania involves over 1200 IT workers supporting over 1400 applications across 2500 servers containing 1400 TB of data globally. 2) Scania uses tools like Perforce for version control and aims for continuous integration, deploying code changes several times per day through an automated deployment pipeline. 3) Scania's DevOps movement aims to break down barriers between development and operations by establishing infrastructure as code, autonomous feature teams, and embracing microservices to enable faster delivery through improved collaboration.
Perforce on Tour 2015 - DevOps at Scania: Trust & Some Code
- 1. DevOps @ Scania Trust and Some Code Anders Lundsgård Mattias Järnhäll Perforce OnTour - Berlin 16 Sept, 2015
- 2. I want change! I want stability!
- 4. Disclaimer #1 The opinions expressed in this presentation and on the following slides are solely those of the presenters and not necessarily those of Scania as a whole.
- 5. Disclaimer #2 Tools are only randomly selected. Scania does not value these more than those not mentioned… …except for Perforce
- 6. Scania as an IT company • ~1200 workers (800+400) @ Scania IT • ~1400 apps (mix of build and bought) • ~2500 servers (win, Linux, MF, iSeries) • ~1400 TB data • Main site -> Södertälje, Sweden • Regional site -> Sao Paolo, Brazil • Supports Scania Globally • Application, infrastructure, EUS
- 7. Perforce @ Scania • Perforce customer since 2007 • Disk usage on servers 1.8 TB • 1000+ users • 1000+ change lists submitted per day
- 9. Limit Work In Progress CODE IN PROD PENDING CODE NEW FEATURES Customer Value
- 10. Why Agile? 65%
- 11. Waterfall
- 13. Continuous Integration Quality over new features Version everything Everyone work on Main branch Automation
- 14. Automation – Deployment Pipeline Version Control Pull & Push several times a day Continuous Integration Server - Build - Test - Package Target Servers (Dev, Staging, Prod) Deploy Server Version Everything - Code - Tests - Configuration - Database - Infrastructure
- 15. Pipeline Software Delivery Through the Decades Tests Code ‘90s ‘00s ‘10s
- 18. Level 1 Level 2+3 Infrastructure As A Service Infra/ Operations Feature Team Feature Team Feature Team Feature Team GUI Business Logic Database Virtual Machine ESB Network Change Management Database Monitoring Forward
- 19. Infrastructure As A Service Infra/ Operations Feature Team Feature Team Feature Team Feature Team GUI Business Logic Database Virtual Machine Web server Load Balancer Change Management Monitoring You build it You run it! Infrastructure as code Cultural Technical
- 20. ITOps DevOps Version Control I need a new web site for my front end code ”xxx”
- 21. HW / Virtualization Storage Network Data center Application Server / Web Server Database OS Services Services Services Services Services Services Services .NET Java Oracle
- 22. HW / Virtualization Storage Network Data center Application Server / Web Server Database OS .NET Java Oracle Services Services Services
- 23. Flow vs. Resource Optimisation Ref: The Phoenix Project
- 24. For Us DevOps is a Must
- 25. GUI Database Infra Business Logic Networking Storage OS Integration Monolith Service 1 Service 2 Service 5 Service 7 Service 8 Service 10 Service 12 Service 14 Service 3 Service 4 Service 6 Service 9 Service 11 Service 15 Middleware Service 13 User Interface Security Monitoring Even with Continuous Integration. Fast delivery is hard with 50+ engineers and a large codebase.
- 26. All Infra needs User Interface Service 1 Service 2 Service 5 Service 7 Service 8 Service 10 Service 12 Service 14 Service 3 Service 4 Service 6 Service 9 Service 11 Service 15 Service 13 Microservices All Infra needs All Infra needs All Infra needs All Infra needs All Infra needs All Infra needs All Infra needs GUI Database Infra Business Logic Why Microservices? 1. Autonomous teams 2. Build, Test, Deploy SPEED
- 27. 11,6
- 28. Learnings: Dev-to-Dev • Find end user feedback and try to act on it • Learn to work on Trunk • Do not rely on database backup for dev/test • Never blame bad code • Ops guys are not pure evil persons • Avoid “Hero-Based Culture”
- 29. Avoid “Hero Based Culture”
- 31. When a Real Hero Quits
- 32. Contact • Anders Lundsgård – anders.lunsgard@scania.com – @anderslundsgard – github.com/anderslundsgard • Mattias Järnhäll – mattias.jarnhall@scania.com
Editor's Notes
- #3: Dev back to office on Monday morning. Ops tired after weekend release. http://afterrelease.devops.vision
- #5: http://theagileadmin.com/what-is-devops/
- #6: http://theagileadmin.com/what-is-devops/
- #9: Short iterations gives more quality: http://whatgivesquality.devops.vision
- #11: http://theagileexecutive.com/2010/01/11/standish-group-chaos-reports-revisited/
- #13: Water – Defines the upfront project planning process that typically happens between IT and the business. Scrum – An iterative and adaptive approach to achieving the overall plan that was first laid out in the 'Water' stage. Fall – A controlled, infrequent production release cycle that is governed by organizational policy and infrastructure limitations. (From: http://www.infoq.com/news/2011/12/water-scrum-fall-is-the-norm)
- #14: You have still automation to do if… You can’t have a dev environment up and running with one single command Someone does manual regressions Prepare test data on test environment You have to order a server Anyone have to log in to a server Someone does manual installations
- #22: Funktionella silos – suboptimeringar Många överlämningar (exempel HS) Långt från kunden Inga tjänster som kunden vill ha Friktion mellan grupperingar
- #23: Vi har nya roller efter “kund” Virtuellt organiserade efter leverans Kommer närmare kund Utvecklar tjänster som kunden vill ha
- #27: ”It’s a trade from code complexity to operational complexity” Martin Fowler: https://www.youtube.com/watch?v=wgdBVIX9ifA http://martinfowler.com/articles/microservices.html Adrian Cockcroft: https://www.youtube.com/watch?v=nMTaS07i3jk&feature=youtu.be Gene Keen, Randy Shoup http://youtu.be/MRa21icSIQk 43:00 Randy Shoup: http://gotocon.com/dl/goto-cph-sept-2014/slides/DeanWampler_and_EvaAndreasson_and_KevlinHenney_and_RandyShoup_WheresCaptainKirkChartingACourseThroughEnterpriseArchitecturePartI.pdf
- #32: http://brentleavesjob.devops.vision