demystifying devops

Demystifying DevOps

Tathagat Varma Knowledgepreneur

http://thoughtleadership.in

The journey so far… D

evel

oper

s bu

ilt

and

ran

the

syst

ems

Developers built the systems

Operators ran the systems

Developers built the systems

Testers tested the systems

Sys Admin managed the systems

Operators ran the systems

???

We “created” silos...

Developers Testers Operations

Code Software Service

Agile. Circa 2001.

http://www.agilenutshell.com/agile_vs_waterfall

Key changes… •   From top-down predictive planning => team-driven

adaptive planning •   From documentation-driven sequential phases =>

working software each iteration •   From episodic delivery of all features => incremental

delivery of highest-value features •   Dev + Test => One team / agile developers –   Old Dev + Test capabilities => New Dev –   Old Test + Dev capabilities => New Test

But some silos continued…

Agile Developers Operations

…and the problems ensued! Deployment was still a major risk

When deployed, software would invariably underperform

Changes were episodic, and way too risky

When problems were found, “Us Vs They” blame game

Time/cost to find issues was huge, to fix is even more

…

The Wall of Confusion: One Company, Two Mindsets…

http://www.olindata.com/blog/2014/01/what-devops http://dev2ops.org/wp-content/uploads/2010/02/WallOfConfusion.png

So, what is Devops? The term was coined by Patrick Debois in 2009. He wanted to extend Agile principles into sys admin and ops.

Enable collaboration between all teams involved in building, shipping and managing a feature

Developers don’t just focus on functionality. Performance and Reliability are just as important.

Operations don’t get involved only towards the end, but throughout the development lifecycle.

Tools might help, especially for large deployment, but culture comes tops.

From Agile to DevOps

http://www.collab.net/solutions/devops http://www.collab.net/solutions/devops

DevOps Principles

Develop and test against production-like systems

Deploy with repeatable, reliable processes

Monitor and validate operational quality

Amplify feedback loops

DevOps for Dummies – Sanjeev Sharma

DevOps cycle

Pic source: CollabNet

Why DevOps?

Shift Left

DevOps for Dummies – Sanjeev Sharma

How DevOps?

http://www.ca.com/us/lpg/ca-technology-exchange/what-smart-businesses-have-gained.aspx

Success Factors


Challenges…


Benefits


2016 State of DevOps Report

So, what really is DevOps?

Process? Method?

Tool? ???

The key is… Mindset

Culture

Process

Methods

Tools The crux!!!