TTN 2015 "Defining DevOps: Concepts, Technology and Automation. Oh yeah, and People"

DevOps: Concepts, Technology and Automation.
oh yeah, and people...
Daniel Bryant
@danielbryantuk
daniel.bryant@opencredo.com
www.opencredo.com

Tonight
• Conceptual issues
• Technical issues
• Automate everything (except the people)
• Change management is essential
26/11/2015 @danielbryantuk

Who Am I?
• London Java Community Associate
• Conference regular: QCon, Devoxx, JAX
• InfoQ Editor, DZone MVB, Voxxed
• Chief Scientist at OpenCredo
• Technical/digital transformation
• Java, Golang, CI/CD, DevOps
• Microservices, cloud and containers
• Maintainer of muservicesweekly.com

2012
-
2015

Conceptual Issues

Rebranding

Reductionism (Done Incorrectly)

Developers with Infra Tooling

Evaluation
“I will postpone using this shiny new framework
until my peers have validated the proposed
benefits with rigorous scientific experiments”
- Said by no programmer
…ever

Raible’s Comparison Matrix
Matt Raible comparison matrix (bit.ly/OxUzad)

Be Wary of “DevOps” Tooling

Concepts
DevOps is an approach (C.A.L.M.S)
Changing a name rarely changes anything
Think (and act) big-picture
Tools follow practice and process,
not the other way around

Technical Issues

https://www.flickr.com/photos/45131642@N00/
Is this your view of a container?
26/11/2015 @danielbryantuk Credit to Steve Poole for this idea

Do you equate one with this?
https://www.flickr.com/photos/don-stewart/

Or this?

Sorry – it’s more like:

https://www.flickr.com/photos/smoovey/
Your container

Microsoft May Be Late to the Party
(But they’re on their way now)

Monitoring
• Health checks
– Coda Hale (DropWizard) Metrics
– Spring Boot actuator
• KPIs for apps (and business)
– Assertions / invariants
– Throughput
– Queue length

Kibana FTW

Grafana FTW

Problems?
• Rob Ewaschuk’s “Philosophy on Alerting”
• Brendan Gregg’s USE method
– “check utilization, saturation, and errors.”
• “DevOps Troubleshooting”
– Kyle Rankin

Technical Issues
There are no silver (container) bullets
But check ROI on ‘traditional’ VMs/Infra
Look at your entire IT estate
Observability is a key tenet of DevOps
“What gets measured gets managed”

Automate Everything (Except the People)

In the Beginning…

Developers - Share the Pain...

“Dev-on-call”
An occasional spike to the head
is a good thing...
...metaphorically speaking
• You build it, you run it
– Shared responsibility
– Communication

We’ve built a wonderful system
It’s now running in production…

Things Inevitably Go Wrong…

At the End: It’s All About People
www.infoq.com/news/2015/06/too-big-to-fail

Automation
Automate, automate, automate
Develop empathy
(shared responsibility & collaboration)
Technology provides a foundation,
then it’s all about the people

Change Management without
(too much) Management Speak

Change Management is Essential
• Fair process (three ‘E’s)
– Engagement
– Explanation
– Expectation
• Leading change
– Transformation is a process
– “Change is coming to IT” (bit.ly/1QZovXr)
– Communicate, empower, plan, consolidate

“DevOps”
• Development practices
– Architecture, design, workflow
• Operational guidance
– “ilities”, DR/BC, InfoSec
• Infrastructure automation
– Config management, provisioning, self-service

“DevOps”
• Deployment automation
• Infrastructure monitoring
• Log management
• Application management and monitoring
– Share understanding and collaborate on issues
– Expose this across the business

bit.ly/1PMlpIL

We Value…
http://www.slideshare.net/dbryant_uk/mucon-2015-the-business-behind-microservices-organisational-architectural-
operational-challenges

The Future of DevOps?
• ‘Full-stack’ developers
• Platform/tooling team
• Site Reliability Engineers (SREs)
• People might actually talk to each other…

Summary
• DevOps is about more than just tech
– Tools follow good process and practice
• There are no silver (container) bullets
– Confirm ROI on new infra spending (in-house vs external)
• Automate everything, except the people
– People drive change (with process, values and culture)
• Let’s make this an inclusive community
– Linux, Windows, Business, Transformation, PMs…

Some Bedtime Reading…

A Big Thanks to…

Thanks
Questions are welcome!
@danielbryantuk
daniel.bryant@opencredo.com
www.opencredo.com

My Thoughts (and References)
• http://www.slideshare.net/dbryant_uk/moving-to-devops-mode-
easy-hard-or-just-plain-terrifying
• http://www.slideshare.net/dbryant_uk/jaxlondon-2015-devops-
and-the-cloud-all-hail-the-developer-king
• http://www.slideshare.net/dbryant_uk/2013-ljcconf-chuck-norris-
doesnt-need-devops
• http://www.slideshare.net/dbryant_uk/mucon-2015-the-business-
behind-microservices-organisational-architectural-operational-
challenges
• http://www.infoq.com/author/Daniel-Bryant
• https://www.parleys.com/search/daniel%20bryant/PRESENTATIONS
• https://skillsmatter.com/skillscasts/7004-our-journey-to-world-
gifting-domination-how-notonthehighstreet-com-embraced-docker

TTN 2015 "Defining DevOps: Concepts, Technology and Automation. Oh yeah, and People"

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TTN 2015 "Defining DevOps: Concepts, Technology and Automation. Oh yeah, and People"