what is devops
Post on 13-May-2015
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is DevOps?
@ablythe
Where did the term come from?
Dev
Ops
@ablythe
Velocity Conference 2009
“10+ Deploys Per Day” “Dev and Ops Cooperation at Flickr”
See:• http://www.youtube.com/watch?v=LdOe18KhtT4• Slides
Take Aways…
• Automated Infrastructure• Shared Version Control• One Step Build (and Deploy)– They used Hudson, “Small Frequent Changes”
• Feature Flags– AKA Branching in Code
• Shared Metrics/Shared Goal• IRC and IM Robots
CAMS
•Culture•Automation•Measure• Sharing
CAMS
•Culture (the hardest one)•Automation•Measure•Sharing
Culture (Allspaw & Hammond)
• Respect• Trust• Healthy Attitude about failure• Avoiding Blame
Michael Nygard
@mtnygard
http://thinkrelevance.com/blog/2014/02/17/culture-is-defined-by-what-you-cannot-say
Things You Cannot Say• That's not my job.• (From a developer) Well, the tests all pass, so the problem must be in Operations.• (From operations) I did everything right, it must be a code problem.• Oh, production is down? I didn't know.• I built the production environment by hand. There's no reason to automate it
because we're only doing it once.• How close is QA to production? I don't know.• You need a new environment? Put in a service request and we'll see.• Your service request was approved. You should have a new machine in a few
weeks.• Why do you need another terabyte of storage? You're already using a terabyte!• Our DBAs won't let you install that server. We're a SQL Server shop.• I don't know what our slowest query is.• I don't know how many cores our production environment has.
John Willis
• http://www.getchef.com/blog/2010/07/16/what-devops-means-to-me/
• @botchagalupe
• Maintains: http://devopscafe.org/
Devops is not a plan, it’s a reaction
• Passionate people who get together• We talk about Skunkworks projects and their
success• Desire to do things better• Donating time
Devops is not a judgment
• Talking about deploying 20 times a day is because people are excited that they can do it
• This doesn’t mean that you have to do it!
• But if you chat with the dude/dudette who can/is doing it, then I bet she is willing to share insight you can benefit from.
Devops is not meant to be an exclusive club
• There is not one place that you will find a definition of DevOps
• All are invited, there is plenty of work to do…
Devops is not just a bunch of really smart people
• Sure, there are some shining stars
• But mostly we’re just Dudes/Dudettes trying to do our craft better every day
Devops is not a product
• You cannot just buy DevOps and install it…
• You cannot just instruct your team to go DevOps… but you may encourage it…
Devops is not a run around traditional IT
• DevOps should work within the system you already have.
• I have no idea what ITIL is…
Lean/Kanban
CAMS
•Culture•Automation•Measuring•Sharing
Lean Flow
Configuration Management
• Not just installation…
• State Management
• Idempotence
CAMS
•Culture•Automation•Measure•Sharing
Will he talk about Etsy here?
• Measure Anything, Measure Everything
• http://codeascraft.com/2011/02/15/measure-anything-measure-everything/
Will he talk about Etsy here?
• No…
• It’s a great blog… go read it.
Gene Kim
http://www.realgenekim.me/it-controls-benchmark/
@RealGeneKim
3 key questions…
• To what extent does the organization define, monitor and enforce some standardized configuration strategy?
• To what extent does the organization define, monitor and enforce a process culture?
• To what extent is restricted access to production?
From Gene Kim
• On the one hand, it's astonishing that if you ask those three questions and put them into a spreadsheet, you can predict compliance performance, security performance, IT operational performance and project due date performance.
• On the other hand, most people would agree that it is common sense that these three controls are prerequisites to good performance. Unfortunately, common sense is not common practice.
CAMS
•Culture•Automation•Measure•Sharing
Carl Chesser
• beecham + blaze + splunk real-time search + validation testing = win
• “each environment deployment of beecham was around 16 min in execution time”
• “It was awesome to watch how beecham rolled through the whole upgrade, seeing the splunk real-time logs show as each service was restarting, kicking off a series of tests with minimal effort and having splunk bring back any issues.”
Schon Thacker
• Linux: Directory Structure and "Best Practices"
• https://connect.ucern.com/docs/DOC-176416
• Refer to this often
Kalin Hicks
• Comment on: Automated Alerting Strategy ?
• Basically laying out how to get text messages from Zabbix for all KC Carriers.
Kyle McGovern
• LUKS Hadoop performance
• The cost savings to Cerner can be huge from this.
Great… But what do you think DevOps is?
• For me…
• It is the tight feedback loop.
When is the best time to plant a tree?
When is the best time to plant a tree?
Culture
• Be Positive and celebrate each others success– :thumbsup: – :shipit: – :+1:
• Understand each others constraints
On Opsinfra… We Believe…
• A minimal number of associates need to directly touch nodes (approaching zero)
• These tools matter – improve the lives of our users
•
• Tools should be hardened - so that we can find the root cause and drive corrective action
Need for Automation of Configuration46K VM’s as of Q3 2013
simple exponential trend in Excel75K by end of 2014
Measure
• Using Splunk on Millennium+ over 240 defects were fixed or prevented last year
• Measure– Downtimes length– MTBF– Performance– Successes– Everything…
Sharing
• Devops is a Movement
• Meetups like this are run on a shoe string budget
• They are about sharing ideas, attend them, blog, and most importantly have fun.
Sharing
@ablythe
DevOps is a Movement
What is a Movement?
One thing I didn’t say…That it is/will be easy
But the alternative is to leave here and go back to your silo…
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