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John Willis Damon Edwards
What is DevOps?
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Agile Infrastructure
FullyAutomated
Infrastructure
Agile Operations
DevOps
Cloudy DeliveryModels
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“We are in a period of combinatorial innovation”
• Abstract and fault tolerant components
• Integrated network accessible services
• Unlimited infrastructureHal Varian
Chief Economist, Google
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Hierarchy Theory
“The rate of evolution of any system is dependent upon the organization of
its subsystems”
Herbert SimonTheory of Hierarchy and
Componentisation
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6
A Parable of Two Watch Makers
Technological evolution (and revolution)
Introductions of new products
Strong and unpredictable demand fluctuations
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Operations: The Elephant in the Room
“Once we move to software as a service, everything we thought we knew about competitive advantage has to be rethought.”
Tim O'ReillyOperations: The New Secret Sauce
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Operations: The Strategic Weapon
“This advantage is the ability to consistently create and deploy reliable software to an unreliable platform that scales horizontally.”
Jesse Robbins Operations is a competitive advantage... (Secret Sauce for Startups!)
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1. Scale
2. Velocity of Innovation
How can we compete today?
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What is DevOps?
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What is DevOps?
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What is DevOps?
What are DevOps problems?
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Ah-ha! Ka-ching!
Business Process
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Ops
Ah-ha! Ka-ching!
Dev
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Ah-ha! Ka-ching!Wall o
f C
onfu
sio
n
OpsDev
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Dev OpsDevOps
Wallof iononfusC
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Ah-ha!
Application Lifecycle Result
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Ah-ha! Ka-ching!
Application Lifecycle
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Ah-ha!
Application Lifecycle
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Ah-ha! Ka-ching!
Application Lifecycle
Day 0 Day n
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Ah-ha!
Ah-ha!
Result
Result
Ah-ha!
Result
Ah-ha!
Result
Ah-ha!
Result
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Ah-ha!
Ah-ha!
Result
Result
Ah-ha!
Result
Ah-ha!
Result
Ah-ha!
Result
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Sounds good...But what can I do?
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CAMS
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CultureAMS
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Spock ScottyLittle bit weird
Sits closer to the bossThinks too hard
Pulls levers & turns knobsEasily excitedYells a lot in emergencies
John Allspaw and Paul Hammond Velocity 2009
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Peopleover
Processover
Tools
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“Make the problem the enemy”
Jody MulkeyCIO, Shopzilla
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“You can’t directly change culture. But you can change behavior, and behavior becomes culture”
Lloyd TaylorVP Infrastructure, ngmoco:)
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CultureAutomationMS
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Web Operations 1.0 Web Operations 2.0
Get fully automated. Period.
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Infrastructure as Code
‣ Version control
‣ Process control
‣ Application control
http://www.flickr.com/photos/asten/2159525309/sizes/l/
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Infrastructure as code...
“10th floor test”Can you automatically restore your services if you:
1. Toss a random server out the window
2. Toss a random engineer out the window
adapted from Steve Traugott / Infrastructures.org
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Use toolchains...
Open Source Provisioning Toolchain / DevOps Toolchain Project
Bcfg2cfengineChefPuppetSmart Frog
Application Service Orchestration
System Configuration
Cloud or VMImage
Launch
OSInstall
KickstartJumpstartCobblerOpenQRMxCAT
XenlxcopenVZEucalyptusKVM
CapistranoControlTierFabricFuncmCollective
Cloud: OS Install:
Command and Control
Configuration
Bootstrapping
Prov
isio
ning
Act
ivity
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Copyright © 2010 Opscode, Inc - All Rights Reserved 35
Load Balancer
Web Server Web Server
DB Master
DiskDisk
DB Slave DB Slave
Disk
Provisioning Configuration Integration
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CultureAutomationMeasurementS
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Measure Everything
• Performance Metrics• Process Data• People Data•Heuristics
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Am I actually measuring my...
processes?
people?
(hint: we are here to make those two things better)
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CultureAutomationMeasurementSharing
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1. Request Demand sharing!
2. DevOps Days
3. Meetups
4. Mailing ListsDevOps Toolchain (Google Group)
Agile Systems Administration (Google Group)
DevOps (Google Group)
5. #DevOps ... Tweet, Tweet, Tweet
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CultureAutomationMeasurementSharing
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Other things to think about...
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Become Test Driven...
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1. Quality is everyone’s responsibility
2. Traditional “QA” doesn’t scale
Initial realizations...
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What does that mean for QA?
QA is not a team that “does”
QA is a cross-cutting concern
QA must leverage automation
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Think Test Driven...
Do it in isolation
• Verify components in isolation (“unit”)
• Verify integrated components or subsystems (“functional”)
• End-to-end system tests (“system”)
on demand, low minutes
Do it with a crowd
• Performance
• User interaction analysis
• Traffic analysis
• A/B Testing / Feature Flags
• Operational unit tests
continuous, real-time
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Write a test!
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“Application code is a business liability. Tests are a business asset”
Lee ThompsonCTO, Consumer Travel, HP
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Continuous Delivery
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Principles of Continuous Delivery
• Repeatable, Reliable Release Process• Automate Almost Everything• Keep Everything in Version Control• Bring the Pain Forward• Build Quality In • Done Means Released• Everyone is Responsible • Continuous Improvement
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Continuous Delivery in a Nutshell
• Source Code Management• Test Driven Development• Continuous Integration• Continuous Deployment• Infrastructure as Code• Fully Automated Infrastructure• Continuos Improvement
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Org structures are not sacred!
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Anti-Pattern #1:
Dev
ManagerOps
Manager
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Anti-Pattern #2:
If responsibility for full lifecycle of a service is more than 3 degrees
away from the actual process
1º
2º
3º
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What Developers want...
Self-service
Infrastructure is the app(and vice versa)
Not systems administrators
Faster feedback
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What Operations wants...
Get out of the muck
Spend time adding value
To get to say “Yes” more
Be “agile”
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And one little pet peeve...
DevOps is not a job title!