From Dev/ops to devops: What a difference one character makes

FromDev/Ops to devops

Kris Buytaert Patrick Debois Kris.Buytaert@inuits.be Patrick.Debois@jedi.be @krisbuytaert @patrickdeboishttp://krisbuytaert.be/blog http://jedi.be/blog

There was thisgreat IT company

Full of IT-professionals

But when a newrelease was at hand

Things changedDEVS OPS

“please deploy this warﬁle now”

“we need more detail”

“just do it, it’s important”

“we still need more info”

I’m superior! I’m superior!Operations is so slow Devs don’t know productionWe create real value We protect real value

And after a few rounds silence

The business was horriﬁed

Dev/Ops

Why can’t we just get along?

Infrastructureused to be hard(ware)

operations couldonly jump not ﬂy

therefore operations avoided change

But then came virtualization

The cloud showed us how to scale

Infrastructure as codeCFEngine Puppet Chef

Example tomcat recipe# tomcat.ppclass tomcat {! package {! ! "java-1.6.0-sun-compat":! ! ! ensure => "installed";! ! "tomcat6":! ! ! require => [Package["java-1.6.0-sun-compat"], Package["ntc-tomcat-log4j"]],! ! ! ensure => "installed";! ! "tomcat6-admin-webapps":! ! ! ensure => "installed";! ! "log4j":! ! ! ensure => "installed";! ! "tanukiwrapper":! ! ! ensure => "installed";! ! "mysql-connector-java":! ! ! ensure => "installed";! }! file {! ! "/etc/init.d/tomcat6": mode => "0755", owner => "root", group => "root", source => "puppet:///tomcat/tomcat6.init"; }! user {! ! "tomcat":! ! ! ensure => "present",! ! ! require => Package["tomcat6"];! }}!

AgileInfrastructure

Rebuild from Scratch

Version control

Automate things

Controlled changes

It’s more then just automation

use tests as brakes toallow you to go faster

Test deploy + rollbackscenario’s

Make thingsreproducible

Agile Sysadmin

Operations backlog

Planning Poker

Iterations vs ﬂow

Pair systemadministration

Kanban boardBacklog Todo(3) Test(2) Production(1)

OPS-OPS Problem SysadminNetwork Storage Security

But agile devsknow all that

We all becomedevelopers now?

Devs can just shipa virtual machine?

Stop therockstar mentality!

Don’t fearfor your job

All this automation will onlyhelp against some local pain

Let’s turnthe pain level up a notch

Continuous Integration If it’s hard do it more often

Build PipelinesDEV TEST UAT PREPROD PROD

Make all environments the sameDEV TEST PROD

Software only bringsvalue in Production

Parallel Build PipelinesSoftware Build & Test ApplicationInfrastructure Build & Test OS LevelData Build & Test Data

Synchronize your release cycles

ThinkContinuous Delivery

There are still a few problems to solve

How to package things

We all want our access

Debug logs !=Operational Logs

Focus on:Flow & Cycle Time

Value stream mapping

Minimize waste

Zero defect policy

Stop the line mentality

Fix thingsearly in the process

We wantContinuous Improvement

We need toovercome abigger pain

We need to overcome the silosDevelopment Operations

Current management styles Prince2, Agile, Scrum ITIL, Cobit, CMMI

focus on optimizing individual parts

Devs optimizetheir world view

Ops optimizetheir world view

Not In My Back Yard Syndrome

Causing technical debt

Like cron job ﬁxes

The map is notthe territory Alfred Korzybski

Systems Thinking

Understand it’s a business problem

do the right thing vs the thing right

Collect Metrics Bugs Failed deploys IncidentsFunctionality Failure Problemsnot working to deploy in production

When to decideProject vs Incidents

Or functional vsnon-functionalrequirements

Relate it to business value Bugs Failed deploys IncidentsValue Added Market loss Value lost

Advise and Acceptthe business decision

Recap:No Silver Bullet

It’s a jobtitle

Even though we have a different cultureSoftware Hardware

We share thesame customer

We try to solve the same business problem

Why onlywork together when things go wrong?

Managers are there to support you.Not to tell you what to do

It’s not about the tools

It’s a cultural shift

THE SECRET SAUCE OF THE DEVOPS: CAMS • Culture • Automation • Measurement • Sharing John Willis & Damon Edwards

Multiple levelshave higher impact

Culture is hard, start with behaviorImpact Culture Behavior Effort to Tools change

Become Awesome again

Interesting Books

Want to know more? #devops on twitter & irc http://devopsdays.org http://devopscafe.org http://planetdevops.net devops googlegroupdevops-toolchain googlegroup

What keeps you awake at night?

Inspired by• Vampires (Programmers) versus Werewolves (Sysadmins)• http://www.codinghorror.com/blog/ 2010/08/vampires-programmers-versus- werewolves-sysadmins.html

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From Dev/ops to devops: What a difference one character makes

by Patrick Debois on Nov 26, 2010

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