Packing skills to be a DevOps and why that’s a good thing

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Platinum Sponsors Gold Sponsors

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PACKING SKILLS TO BE A DEVOPS ThatConference - August 14th - Wisconsin Dells (USA)

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@CodeStars github.com/nesQuick codestars.eu OLE MICHAELIS

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@CodeStars github.com/nesQuick codestars.eu OLE MICHAELIS

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“Open Source Rockstar” WORKING @JIMDO

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“Open Source Rockstar” WORKING @JIMDO

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“Open Source Rockstar” WORKING @JIMDO

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MY DEVOPS STORY

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WHY IS IT GOOD?

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WHY IS IT GOOD? dedicated technical-debt team

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WHY IS IT GOOD? dedicated technical-debt team making others faster

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WHY IS IT GOOD? dedicated technical-debt team making others faster cross-functional

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WHY IS IT GOOD? dedicated technical-debt team making others faster cross-functional full-stack engineering

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LET’S TRY TO DEFINE DEVOPS

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YOU BUILD IT, YOU RUN IT! “The DevOps prime directive”

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ANTI-PATTERNS “You are doing it wrong!” NO! BECAUSE NO http://i.huffpost.com/gen/1143905/original.jpg

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ANTI-ANTI-PATTERNS “Ahhh... better!”

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BECOME A DEVOPS

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EXTEND YOUR DEV SKILLS

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S.T.U.P.I.D. S.O.L.I.D.

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PATTERNS creational behavioral structural

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TEST-DRIVEN- DEVELOPMENT tests first know “the circle” different tests

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tests first know “the circle” different tests, are different TEST-DRIVEN- DEVELOPMENT tests first know “the circle” different tests

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you must walk through hell tests, tests, tests (BDD, Integration tests) branch by abstraction REFACTORING

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OPEN SOURCE working with upstream do not patch the framework join the community & gather credits

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SOFTWARE ARCHITECTURE challenge: do it distributed SOA REST

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KNOW THE PITFALLS wrong expectations “hipster” technologies 2nd system effect

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GATHER OPS KNOWLEDGE

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SOME HANDY SHELL KNOWLEDGE you should feel comfy in a terminal #protip: use a terminal in your daily work

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UPDATE MANAGEMENT version pinning staging systems

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RISK MANAGEMENT how often does a problem occur? how much is the impact? what is the mean time to repair?

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PROTOCOLS OF THE WEB HTTP TCP / UDP IP

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THE 4 BOTTLENECKS

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1ns

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L1 CACHE REFERENCE 1ns

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L2 CACHE REFERENCE 1ns

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1ns MUTEX LOCK/UNLOCK

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1ns MAIN MEMORY REF.

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1ns MAIN MEMORY REF.

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1ns 100ns ~ 0.1μs MAIN MEMORY REF.

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1ns 100ns ~ 0.1μs MAIN MEMORY REF.

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1ns 100ns ~ 0.1μs SEND 2KB OVER COMMODITY NETWORK

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1ns 100ns ~ 0.1μs COMPRESS 1KB/W ZIPPY

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1ns 100ns ~ 0.1μs

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1ns 100ns ~ 0.1μs

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1ns 100ns ~ 0.1μs 10,000ns ~ 10μs

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1ns 100ns ~ 0.1μs 10,000ns ~ 10μs

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1ns 100ns ~ 0.1μs 10,000ns ~ 10μs READ 1MB SEQ. FROM MEMORY

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1ns 100ns ~ 0.1μs 10,000ns ~ 10μs READ 1MB SEQ. FROM SSD

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1ns 100ns ~ 0.1μs 10,000ns ~ 10μs ROUND TRIP IN SAME DATACENTER

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1ns 100ns ~ 0.1μs 10,000ns ~ 10μs

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1ns 100ns ~ 0.1μs 10,000ns ~ 10μs

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1ns 100ns ~ 0.1μs 10,000ns ~ 10μs 1,000,000ns ~ 1ms

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1ns 100ns ~ 0.1μs 10,000ns ~ 10μs 1,000,000ns ~ 1ms

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1ns 100ns ~ 0.1μs 10,000ns ~ 10μs 1,000,000ns ~ 1ms READ 1MB SEQ. FROM DISK

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1ns 100ns ~ 0.1μs 10,000ns ~ 10μs 1,000,000ns ~ 1ms DISK SEEK

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1ns 100ns ~ 0.1μs 10,000ns ~ 10μs 1,000,000ns ~ 1ms PACKET ROUNDTRIP CA TO NETHERLANDS

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http://www.eecs.berkeley.edu/~rcs/research/interactive_latency.html

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INCIDENT MANAGEMENT what’s the problem? what causes it? how to fix it?

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BEING ON-CALL keep calm! important things first first in, first out, but...

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TOPICS YOU MIGHT CARE ABOUT

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* AS A SERVICE

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DEPLOYMENT

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CONTINUOUS DELIVERY Ship when it’s done!

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CONTINUOUS DEPLOYMENT Shipin’ all the time!

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PULL DEPLOY Stop pushing, start pulling!

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STRATEGIES

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ONE, SOME, MANY

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ONE, SOME, MANY

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ONE, SOME, MANY

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ONE, SOME, MANY

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GREEN / BLUE

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METRICS

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SYSTEM VS. APPLICATION

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WHAT TO MEASURE?

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WHAT TO MEASURE? requests

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WHAT TO MEASURE? requests querys

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WHAT TO MEASURE? requests querys exceptions

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WHAT TO MEASURE? requests querys exceptions connections

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WHAT TO MEASURE? requests querys exceptions connections user

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WHAT TO MEASURE?

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MEASURE WHATEVER MAKES FUCKING SENSE!

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VISUALIZE IT!

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VISUALIZE IT! #M ONITORINGLOVE

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AUTOMATION

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SCALE

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TOOLS LOVE

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DATABASES

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PROGRAMMING LANGUAGES

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3RD-PARTY TOOLS

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QUEUES

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FAILURE IS GOOD

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BE AGILE

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FEEDBACK

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METHODS

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KEEP LEARNING

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THANK YOU! @CodeStars

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http://nikic.github.io/2011/12/27/Dont-be-STUPID-GRASP-SOLID.html http://en.wikipedia.org/wiki/SOLID_(object-oriented_design) http://www.shutterstock.com http://icomoon.io/app/ http://apievangelist.com/2012/01/12/the-secret-to-amazons-success-internal-apis/ http://en.wikipedia.org/wiki/Structural_pattern http://en.wikipedia.org/wiki/Creational_pattern http://en.wikipedia.org/wiki/Behavioral_pattern http://www.eecs.berkeley.edu/~rcs/research/interactive_latency.html http://bfwa.com/pitfalls/ http://farm9.staticflickr.com/8491/8344781525_5787255ec2_z.jpg http://docs.hostedgraphite.com/_images/sample_dashboard_conc_users_advanced.png http://oss.oetiker.ch/rrdtool/gallery/btdmd8.png http://www.wadsam.com/wp-content/uploads/2012/11/stock-exchagne.jpeg http://s3.amazonaws.com/crunchbase_prod_assets/assets/images/original/0018/2843/182843v2.png http://2.bp.blogspot.com/-t2FW5rx_yn0/TxVwhmqAXgI/AAAAAAAAA7s/DSdFmMZ5ecM/s1600/trading-floor.jpg http://en.wikipedia.org/wiki/Mutual_exclusion Thanks to all the people helped me so much! Elena Ingo Nils Fridel Spring Jimdo! Sources:

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August 11th – 13th 2014 Same Place, Same Time