dev ops overview (brief)

What’s the commotion aboutOverview of what is happening in the industry

around CI/CD and DevOps

10/8/12 © Copyright 2012 Constant Contact Inc.

Are you aware of what is happening out there?

© Copyright 2013 Constant Contact Inc. 2


On the Care and Feeding of Feedback Cycles by Elisabeth Hendrickson @ FLOWCON 2013

http://www.slideshare.net/ehendrickson/care-and-feeding-of-feedback-cycles

Operations sees …

Fragile applications are prone to

failure

Long time required to figure out

“which bit got flipped”

Detective control is a salesperson

Too much time required to restore

service

Too much firefighting and unplanned

work

Planned project work cannot

complete

Frustrated customers leave

Market share goes down

Business misses Wall Street

commitments

Business makes even larger

promises to Wall Street


More urgent, date-driven projects put into

the queue

Even more fragile code put into production

More releases have increasingly “turbulent

installs”

Release cycles lengthen to amortize “cost

of deployments”

Failing bigger deployments more difficult to

diagnose

Most senior and constrained IT ops

resources have less time to fix underlying

process problems

Ever increasing backlog of infrastructure

projects that could fix root cause and

reduce costs

Ever increasing amount of tension

between IT Ops and Development

Dev sees …

The Downward Spiral (from Gene Kim)

These are business problems!

Pressure on dev teams forces them to take shortcuts and accumulate technical debt

Attention to Automated testing is reduced and the coding is slashed

Assumption that QA will catch the problem - beginning of throw over the wall

QA is starting to run behind the schedule because the amount of work increasing

Dev cycle is increasing by taking time from QA

QA is starting to fortify the wall and put processes in place requiring strict documentation of what has changed

Code gets into a fragile steaming hot pile that no one wants to get close to and even touch

Lead developer gets bored, frustrated and burned out and leaves

Hot pile stays there forever



Devops Modelling by Patrick Debois @ YOW! 2013

http://yow.eventer.com/yow-2013-1080/devops-modelling-theory-practice-and-caveats-by-patrick-debois-1382

What is DevOps?


http://www.devopsdays.org/blog/2010/05/16/the-panel-experiment-and-ignite-devops/

http://www.devopsdays.org/blog/2010/05/16/the-panel-experiment-and-ignite-devops/

DevOps = CAMS / CLAMS / CALMS

Culture

Automation

(Lean)

Measurement

Sharing


Culture

Fast feedback

Direct connections

Data-based communication

Enablement, not self-protection

John Willis (the Demming of DevOps)

Inverse incentives:

• measure Ops on # of released features

• Devs on stability of their apps in production

Measurement

Measure everything

Sharing

Share information

Share power

Share knowledge


Automation

Lightweight tools,

readiness to discard or

change tools

Open-source bias

Automate for leverage

to change

Embrace & adopt

“developer” tools

SCM

Configuration

Management

What is Continuous Delivery?

reduce the cost, time, and risk

of delivering incremental changes to users


Lean thinking …

Deliver fast

Build quality in

Optimize the whole

Eliminate waste

Amplify learning

Decide late at last responsible moment

You have the best information possible to make your

decision

Empower team

Micro-services!



v1

v2

Ruby

Java

Canary Releasing


Data Migration


Jez Humble on Continuous Delivery @ Devops days 2010

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0CC0QFjAA&url=https://github.com/jedi4ever/devopsdays-webby/blob/master/site/content/blog/wp-content/uploads/2010/11/jez-humble-continuous_delivery_devopsdays_2010.pdf&ei=CgJpU7T4MMfMsQTYjoDADw&usg=AFQjCNGZf1NacCYe8nyQMZrv6Tyi8NZ0Ng&sig2=o9uhvMG3TCW9QJ9vOt0a4A&bvm=bv.66111022,d.cWc

Either you break it or our users will


Add some Chaos to the system

You Don’t Choose Chaos Monkey …

Chaos Monkey Chooses You


Histrix Circuit Breaker

Turbine Dashboard



http://www.slideshare.net/beamrider9/continuous-deployment-at-etsy-a-tale-of-two-approaches

http://www.slideshare.net/beamrider9/continuous-deployment-at-etsy-a-tale-of-two-approaches

Etsy


ChatOps @ GitHub


Books


dev ops overview (brief)

Technology

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feedback cycles

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measure ops