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

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

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} @spoole167 @danielbryantuk#DevOps
In
the
beginnin
g

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

This was called “Waterfall”
Reinforced team separation
Long feedback cycles
Long time-to-market
Tended to increase
‘Release Panic’
BIG
Reality
ChasmDEV OPS

Waterfall - more a roller-coaster ride…
Time
#ofbugs Start to panic
here
DEV
OPS
QA
Client
£
Value here
Really panic
here
Reality Chasm

If you fell into the reality chasm…
Time
#ofbugs Start to panic
here
Really panic
here
DEV
OPS
QA
Client
No
Value here

Agile helps reduce the chasm
Time
#ofbugs Feedback
here
OPS
Client
DEV
Feedback
here
Feedback
here
QA
£
Value here

But now clients say…
Time
#ofbugs
OPS
Client
DEV
QA
£
I want value
here
And here

The new challenge – we can’t afford the gap
Time
#ofbugs
OPS
Client
DEV
QA
Move LeftMove Left

B
reak
dow
n
the
silos…

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

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

Change your mindset…

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

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)

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)

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

Interlude
…
C
D
and
D
evO
ps

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)

Start with automated build & unit test
Continuous IntegrationContinuous Integration
JUnit
SCM BuildBuild
Orchestration
Unit
Test

Add staging for automated QA
JUnit
Continuous DeliveryContinuous Delivery
Repository Performance & QA
Deployment tools

Add “automatic(ish) deployment to production™”
JUnit
Continuous DeliveryContinuous Delivery
Continuous DeploymentContinuous Deployment
Hosting
Deployment tools

Base it on virtualization technologies
Continuous Deployment PipelineContinuous Deployment Pipeline
External CloudExternal CloudOn premises cloudOn premises cloud
Cloud
Deployment
Orchestrator
Cloud
Deployment
Orchestrator
JUnit

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’

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

M
ake
your
m
ove…

Developers…

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!

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

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…

QA…

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!

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

Operations…

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…

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

Graphing…

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

W
hy
not?

Who here ‘does’ Agile?

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?

Sum
m
ar
y

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

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

Thanks
Q
&
A

MOVING TO A DEVOPS MODE – EASY, HARD OR JUST PLAIN TERRIFYING?

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