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Day to day devops
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Gareth Rushgrove
February 23, 2016
Technology
3
200
Day to day devops
Practices of effective teams, and reasons for adopting devops
Gareth Rushgrove
February 23, 2016
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Transcript
Day to Day Devops Puppet Labs Gareth Rushgrove From cultural
movement to useful practices
Gareth Rushgrove @garethr
Gareth Rushgrove
Common Problems Whether you’re in software development or enterprise IT
Adopting the latest technology Gareth Rushgrove Long term planning VS
Why does this matter? An increasing rate of technology change
Gareth Rushgrove
Gareth Rushgrove
Gareth Rushgrove
The gap between the leading edge and every-one-else is growing
Gareth Rushgrove
Moving quickly Gareth Rushgrove Stability and security VS
Gareth Rushgrove Then Move fast and break things
Move fast with stable infra Gareth Rushgrove Now
Dev Gareth Rushgrove Ops VS
* Gareth Rushgrove Ops VS
Devops and this talk An introduction to some common practices
Devops is a cultural and professional movement Gareth Rushgrove
CAMS - Culture, Automation, Measurement and Sharing Gareth Rushgrove
Everything as code Teams over individuals Do hard things more
often Gareth Rushgrove - - -
Teams over individuals The problem with single points of failure
and dependencies
Low trust culture Gareth Rushgrove High trust culture
Siloed teams Gareth Rushgrove Cross-functional teams
Long cycle times Gareth Rushgrove Short cycle times
Poor visibility Gareth Rushgrove Fast feedback
Specialist Gareth Rushgrove Generalist
Push Gareth Rushgrove Pull
30x Gareth Rushgrove More frequent deployments Faster lead times than
their peers 200x 2015 State of DevOps Report
60x Gareth Rushgrove Change success rate Faster mean time to
recover 168x 2015 State of DevOps Report
Everything as code Why software is eating the world
Change management, configuration management, supplier management, capacity management, request fulfilment,
problem management, access management, etc. Gareth Rushgrove
Доверяй, но проверяй Trust but verify
Avoiding spreadsheets as the source of truth Gareth Rushgrove
If you don’t know the state of your system how
can you trust a given change will work? Gareth Rushgrove
The best source of truth for the network is the
network itself Gareth Rushgrove
Infrastructure as code Gareth Rushgrove
Gareth Rushgrove
Gareth Rushgrove
Gareth Rushgrove
Applying software development practices to infrastructure Gareth Rushgrove
Source code can be checked into version control, so clear
understanding of who changed what and when Gareth Rushgrove
Changes can be made through a pipeline, everything is visible
and nothing is adhoc Gareth Rushgrove
Gareth Rushgrove Login to a server Make change
Gareth Rushgrove Write the code Check syntax Check style Unit
tests Acceptance tests Code review Deploy
Do hard things more often Building up organisational muscles
Q. If Amazon release to production every 11.6 seconds, how
often does the Change Approval Board meet? Gareth Rushgrove http://assets.en.oreilly.com/1/event/60/Velocity%20Culture%20Presentation.pdf
Gareth Rushgrove
“We went from all-hands-on- deck, war-room sort of deployments to
non-events” Gareth Rushgrove Jez Miller, Heartland Payment Systems
Gareth Rushgrove Regular releases reduce risk
Gareth Rushgrove Chaos Engineering introduces failure
Conclusions Embracing devops practices means…
Everyone embracing change Gareth Rushgrove
Learning new skills Gareth Rushgrove
Changing your team and organisational structure Gareth Rushgrove
Changing your organisation Gareth Rushgrove
Questions? And thanks for listening