Delivering Continuous Delivery Continuously

Delivering Continuous Delivery

Continuously

Simon Hildrew

The Guardian @sihil

Delivering Continuous Delivery Continuously

• About the Guardian • What is Continuous Delivery? • Continuous Delivery at The Guardian • Where to start • Ongoing debates

Founded in 1821

Website growth

1999 1m

March 2014 100m

www monthly uniques

~15 software ‘products’ ~100 deployables

Deployment since 19961996

manual2002

copy & paste

2004 bash script

2006 more bash

scripts

2010 python scripts

2012 scala

!

PRO

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eplo

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year 10000

2013 riff raff

!

~300~25

What is Continuous Delivery?

1. Software deployable throughout lifecycle 2. Prioritise keeping the software deployable over new

features 3. Fast and automated feedback on production readiness

of product changes 4. You can perform push-button deployments of any

version of the software to any environment on demand

http://martinfowler.com/bliki/ContinuousDelivery.html

5. Anyone can integrate the deployment service into their own tooling, monitoring and pipelines(Deployment as a Service)

Anna Vignet: https://www.flickr.com/photos/annnna/2228189828

Continuous Delivery at

The Guardian

Tooling

Riff Raff

Riff Raff• Push button deployment • Audit history • Easy Continuous Deployment • Easy HTTP callbacks to other services • API for triggering deploys, obtaining deploy history • Notifications via IRC, AWS SNS topic • Agnostic to deployment approach

Approach agnostic• Copy JAR/WAR & restart app • Copy Django/WSGI app & restart httpd • Autoscaling • Upload files to S3 • Fastly configuration upload • Install RPM • Apply Cloudformation template

Demo

Processes

1. Software deployable throughout lifecycle

2. Prioritise keeping the software deployable over new features

3. Fast and automated feedback on production readiness of product

changes

4. Push-button deployments of any version to any environment

5. Deployment as a Service

Resulting changes

Dev QA Ops

Gatekeeper

Watchman/Overseer Consultant

Manual regression tester

Test automation Feature testing

Product developer

Product developer, operations & support

Change in attitudesallison: https://www.flickr.com/photos/look_ma_im_flying_pictures/2222370392

https://twitter.com/iamdevloper/status/450905958139834368

https://twitter.com/benjiweber/status/450916228094492672

The danger of not deploying at 5pmRob Jewitt: https://www.flickr.com/photos/robjewitt/3413960746

Where to start

Start smallLes Chatfield: https://www.flickr.com/photos/elsie/8326905483

Encourage evangelists

Eden, Janine and Jim: https://www.flickr.com/photos/edenpictures/6117948499

Make it easyMaggie: https://www.flickr.com/photos/mk1971/2444862771

Follow business prioritiesStuart Chalmers: https://www.flickr.com/photos/gertcha/5164186393

Ongoing debates

Continuous Deployment?

Cost and value

Technology vs. Culture?

Thanks!

Simon Hildrew

@sihil [email protected]

http://github.com/guardian/deploy

ishiring!