DevoxxUK 2014 "Moving to a DevOps Mode: Easy, Hard, or Just Plain Terrifying?"

@spoole167 @danielbryantuk

#DevOps

MOVING TO A DEVOPS MODE:
EASY, HARD OR JUST PLAIN TERRIFYING?
Daniel Bryant Steve Poole
@danielbryantuk @spoole167


#DevOps

Your Guides for Today’s Journey into DevOps…
Daniel Bryant
Principal Consultant, OpenCredo
ü Full-Stack Developer
ü Open Source Advocate
ü Agile, Continuous Delivery and DevOps
ü Aspiring Software Craftsman
Steve Poole
IBM Developer
ü Making Java Real Since Version 0.9
ü Open Source Advocate
ü DevOps Practitioner (whatever that means!)
ü Driving Change


#DevOps

Our Goals…
•  DevOps is about extending ‘agility’ across your IT organisation
•  Implementing this is not going to be easy…
•  … some things will be hard, some things terrifying
•  However, there are real benefits

@YourTwitterHandle

#DVXFR14{session hashtag}


#DevOps


#DevOps

Once upon a time the universe was static
Design, Code
Unit test
Functional Test
System test
Stage
Configure
Fix bugs
Fix bugs
Helpline
Monitor, backup
upgrade, support, repair
security, compliance
Uses
reality chasm


#DevOps

This was called “Waterfall”
Reinforced team separation

Long feedback cycles

Long time-to-market

Tended to increase

‘Release Panic’

BIG

Reality

Chasm

DEV

OPS


#DevOps

Waterfall - more a roller-coaster ride…
Time

#ofbugs

Start to panic

here

DEV

OPS

QA

Client

£

Value here

Really panic

here

Reality Chasm


#DevOps

If you fell into the reality chasm…
Time

#ofbugs

Start to panic

here

Really panic

here

DEV

OPS

QA

Client

No

Value here


#DevOps

Agile helps reduce the chasm
Time

#ofbugs

Feedback here

OPS

Client

DEV

Feedback here

Feedback here

QA

£

Value here


#DevOps

But now clients say…
Time

#ofbugs

OPS

Client

DEV

QA

£

I want value

here

And here


#DevOps

The new challenge – we can’t afford the gap
Time

#ofbugs

OPS

Client

DEV

QA

Move Left


#DevOps

How to bring Dev, QA & Ops together?
ü Culture
ü Common goals
ü Shared responsibility
ü Education
ü Standard technology


#DevOps

Netflix are not Unicorns!
Neither are Amazon, etsy, Spotify…
and besides…


#DevOps

Change your mindset…


#DevOps

Culture is Vital
•  Culture drives behaviour, drives culture…
•  “Communication, simplicity, feedback, courage”
•  Everyone is responsible for delivery
•  Continuous experimentation and learning
•  Not easy to change culture
•  The hardest part of DevOps…
•  …but you will learn new things


#DevOps

Changing Culture
•  Greenfield
•  Flickr’s story (slidesha.re/sHpYV)
•  “Why other people don’t get it”
•  Sandro Mancuso (slidesha.re/1bcStpe)
•  Enterprise
•  “The Phoenix Project” (Gene Kim et al)


#DevOps

Changing Culture
•  Create an effective team…
•  “Habits of highly effective technical teams”
•  Martijn Verburg (bit.ly/1aF9SnK)
•  “Patterns of Effective Teams”
•  Dan North (vimeo.com/68226771)
•  Buy some doughnuts…
•  Andrzej Grzesik (http://www.youtube.com/watch?v=OFr0PoIIdvk)


#DevOps

We’ve all got issues…
Great, so how does this work for individual teams?


#DevOps

Continuous Delivery and DevOps go hand-in-hand…
•  Create a build and deployment pipeline
•  Adopting Continuous Delivery
•  Jez Humble (http://bit.ly/1oEReUM)
•  Implementing Continuous Delivery
•  Rachel Laycock (http://bit.ly/1l1qMPf)


#DevOps

Start with automated build & unit test
Continuous Integration

JUnit
SCM

Build

Build

Orchestration

Unit

Test


#DevOps

Add staging for automated QA

JUnit
Continuous Delivery

Repository

Performance & QA

Deployment tools


#DevOps

Add “automatic(ish) deployment to production™”

JUnit
Continuous Delivery

Continuous Deployment

Hosting

Deployment tools


#DevOps

Base it on virtualization technologies

Continuous Deployment Pipeline

External Cloud

On premises cloud

Cloud

Deployment

Orchestrator

JUnit


#DevOps

The imperative of DevOps
Startups through to big businesses are demanding the value that
DevOps & Cloud Technologies can offer
1.  Production deployment pipeline up and running in days
2.  Updates published in hours
DevOps helps transition an organization into this new world…
Helps to remove the ‘reality chasm’


#DevOps

The imperative of DevOps
The cost?
1.  Standardized pipelines
2.  Dev and Ops teams working together
3.  Greatly expanding your horizons and your technical skills
4.  Leaving your comfort zone


#DevOps

Developers…


#DevOps

Contribute to the pipeline
•  Continuous Integration
•  Unit / Integration Tests
•  Automate all the things
•  Stop throwing stuff over the wall…
•  …or we’ll throw you over it too!


#DevOps

Moving closer to Ops
•  Design patterns
•  Asynchronous communication
•  Timeouts / retries
•  Bulkheads / circuit-breakers
•  Metrics are your friend
•  Technical and business data
•  Logging (centralised)


#DevOps

Thinking/Acting like a sysadmin
•  Learn Linux fundamentals
•  Diagnostic skills
•  top, iotop, iostat, netstat, vmstat
•  Java utils: jps, jstat, jmap, jhat
•  “DevOps Troubleshooting” by K. Rankin
•  Maybe grow a beard…


#DevOps

QA…


#DevOps

Automating QA
•  Automate all the things…
•  Tests can be specifications
•  Specifications can be tests…
•  Make it easy for everyone to execute
•  Make it fast (and conditional)
•  Contribute to the build pipeline
•  If you want people to care, then fail the build!


#DevOps

Automating QA
•  Unit and Intra-component integration testing
•  Spock is awesome
•  Utilise embedded datastore/middleware
•  Performance
•  JMeter + plugins
•  Gatling
•  Website
•  Geb (Groovy + Selenium)


#DevOps

Operations…


#DevOps

Ops should be operational…
•  Learn about coding (pair program!)
•  Python, Ruby, Groovy
•  Get closer to Dev & QA
•  Provide constant feedback
•  Embrace chaos for testing
•  Simian army…


#DevOps

Monitoring is mandatory
•  Infrastructure monitoring
•  Nagios
•  Zabbix
•  Splunk
•  AppDynamics
•  Several trail-blazers
•  Etsy (www.codeascraft.com)
•  Netflix (techblog.netflix.com)


#DevOps

Graphing…


#DevOps

Say No To Snowflakes!
•  “Infrastructure as Code”
•  Version control everything
•  Automate all provisioning
•  Chef, Puppet, SaltStack, Python, AWS CLI
•  Play with Vagrant (www.vagrantup.com)
•  Docker and Packer are also interesting


#DevOps

Who here ‘does’ Agile?


#DevOps

Are you personally ready?
•  Do you use Agile techniques?
•  Can you spell “Continuous Integration”?
•  Are the advantages of DevOps clear?
•  Could you communicate them to your Dev & Ops teams?


#DevOps

Summary
Businesses need to be able to react faster…
…DevOps and the Cloud are key enablers
DevOps is as much a game changer as Agile was…
…this is a Developer, QA and Ops “renaissance”
Don’t be afraid to learn and experiment…
…you’ll benefit even if the tech doesn’t survive
Agile moved you closer to the customer…
…DevOps moves you closer to the IT team


#DevOps

Moving to a DevOps Mode…
You should be terrified
The transition will be hard
But it’s easy to get started

DevoxxUK 2014 "Moving to a DevOps Mode: Easy, Hard, or Just Plain Terrifying?"

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