Post on 16-Apr-2017
The DevOps journey in an Enterprise
Anders LundsgårdSenior Engineer
October 28th 2016
Who am I?
Anders Lundsgård• Senior Engineer (Developer & Technical Architect)• Scania Connected Services
- Delivery Engineering Team- Scania Cloud Adoption Team @anderslundsgard
What I will talk about
Very short about Scania
Pre DevOps
Our DevOps movement
Final takeaways
3
Scania Connected Services
~200.000 connected vehicles~80 engineers
Clearly pointed out that IT should be strategic and transformationalAnd that we need to become more agile in our way of working.
2016 - New Managing DirectorClear direction and new organization
Disclaimer
The opinions expressed in this presentation and on the following slides are solely those of
the presenter and not necessarily those of Scania as a whole.
Our software evolution
‘90sSpaghetti Code
‘00sGrowing monoliths
‘10sMicroservices era
The reality today
Scania – A growing horse
We at infra need to be an enabler for developers. Enable automatic deployments
and roll-backs.
Creating tools/dashboards with relevant KPI’s so that the developer can fast and easily see
the consequences of a deployment.
- Mattias Järnhäll, Infrastructure manager 2014.03.03 on Scania social network
in the early days…
DevOps movement
More features quicker Stability
More features quicker Stability
Shared understanding and common goals
Agile explained
Agile explained
Why Agile?
65%
Remembering the past… Continuous Integration
Version everything Automation
Claim over BlameTrunk based
development
Remembering the past…
CODEIN PROD
PENDING CODE
NEWFEATURES
High focus on Limit Work In Progress
= INVENTORY
Version Control
Pull & Push several times a day
Continuous Integration
Server Target Servers(Dev, Staging, Prod)
Version Everything- Code- Tests- Configuration- Database- Infrastructure
10 minutes
Automation – Deployment Pipeline
DeployServer
CI D
Sounds weird?
Ops…
Reveal a Secret
Developers care about QA and Stability
if…they get accountable
GUI
Database
Infra
Business Logic
Networking Storage
OS
Integration
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.
Monolith
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
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
Microservices
Deploy != Release
Business decision
Feature Team concern
Feature Team concern
Feature Toggle
Tilda 4 makes release to UK market
Zero Downtime
Visibility
10.000+ unique portal users per month
Check-in frequency
Project: Scania Connected Services
Change Stop
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 420
20
40
60
80
100
120
140
160
Prod Deploys per week during 2016
* Infrastructure changes not included
DevOps…
Feature Team
Feature Team
Feature Team
Feature Team
Integration
OS
Web
Monitoring
Change Management
NetworkSecurity
IaaT
Infra/Operations
GUI
BusinessLogic
Database
In the past
Database
Level 1
Level 2+3
Infrastructure As A Service
Infra/Operations
Feature Team
Feature Team
Feature Team
Feature Team
GUI
BusinessLogic
Database
Virtual Machine ESB Network Change Management Database Monitoring
Today
Infrastructure As A Service
Infra/Operations
Feature Team
Feature Team
Feature Team
Feature Team
GUI
BusinessLogic
Database
Virtual Machine Web server Load Balancer Change Management Monitoring
You build it You run it!
Infrastructure as code
Cultural Technical
44
Enterprise IT challenges Different types of customer needs
? !I have an app. Can you install it
for me?Can you help me to help myself?
45
Enterprise IT challenges The Legacy vs Cloud First
Culture
“All in” on DevOps is harder in EU than in US
Collaboration > Automation
Good reads
Automation Business impact
Pair Programming
Collocate with coffee machine
11,6
49
200301401404500
50
200301401404500
Final takeaways…
“Don’t fight stupid, make more Awesome”
Use your technical skillsPoor little me. I’m just a Dev. What can I do?
Zero Downtime
Feature Toggles
Deploy becomes a part of your daily job
Deploy is decoupled from Release
Pipeline
Tests
Code‘90s ‘00s ‘10s
Software Delivery Through the Decades
Driven by Deadlines
Driven by Business metrics
Your Heroes are your Bottlenecks!
Version Control
Single point of failure
Single point of knowledge
Thank You!
Anders Lundsgård
@anderslundsgard