Getting Into the Zero Downtime Deployment World

Dev Day 2016 (Krakow, Poland)

Transcript

1. Getting Into the Zero
   Downtime Deployment World
   Tugberk Ugurlu
   Redgate Software
   @tourismgeek
   tugberkugurlu.com
   #ABBDevDay
   https://flic.kr/p/fNTDM1
   

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2. #ABBDevDay
   https://flic.kr/p/HLRTPW
   Software Dev @ Redgate Human in Cambridge, UK
   MVP @ Microsoft
   

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3. @tourismgeek
   tugberkugurlu.com
   github.com/tugberkugurlu
   stackoverflow.com/users/463785/tugberk
   

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4. What is This?
   #ABBDevDay
   https://flic.kr/p/cdvAaj
   

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5. #ABBDevDay
   Example
   HTTP APIs
   v1
   Example
   Android iPhone
   Example
   Android Client
   Example
   Web Client
   Example
   HTTP APIs
   v1.1
   

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6. Should I Care?
   #ABBDevDay
   https://flic.kr/p/e7oMGm
   

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7. #ABBDevDay
   https://flic.kr/p/49FHd3
   

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8. #ABBDevDay
   https://flic.kr/p/CTxCx
   

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9. https://twitter.com/tourismgeek/status/580270772402393088
   #ABBDevDay
   

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10. Continuous
    Delivery
    #ABBDevDay
    https://flic.kr/p/bzG7ds
    

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11. #ABBDevDay
    http://bit.ly/2cstlDK
    

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12. #ABBDevDay
    http://zleek.com
    

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13. LB
    zleek-0
    zleek-1
    zleek-n
    mongodb
    neo4j
    elasticsearch
    rabbitmq
    recipe-generation-worker-0
    recipe-sync-worker-0
    food-sync-worker-0
    store-sync-worker-0
    recipe-generation-worker-1
    recipe-generation-worker-n
    recipe-sync-worker-n
    recipe-sync-worker-0
    #ABBDevDay
    

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14. #ABBDevDay
    https://gist.github.com/revett/99d8a5143c0bfeddfc92
    Our Target
    

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15. Our Scope
    #ABBDevDay
    

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16. Scope of the Talk
    #ABBDevDay
    HTTP Services Web Sites
    

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17. #ABBDevDay
    https://flic.kr/p/mRRFdH
    The Path and Guidance
    

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18. Write Down the
    Deployment
    Strategy
    #ABBDevDay
    https://flic.kr/p/pd4X4A
    

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19. #ABBDevDay
    

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20. Script out the Deployment Strategy
    https://flic.kr/p/79EVn6
    

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21. #ABBDevDay
    

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22. Release Management
    #ABBDevDay
    https://flic.kr/p/fCbQWb
    

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23. #ABBDevDay
    Octopus Deploy
    http://bit.ly/2d2ivzU
    

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24. #ABBDevDay
    Docker Cloud
    http://bit.ly/2d2ivzU
    #ABBDevDay
    

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25. True Staging Environment
    #ABBDevDay
    

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26. example-api-v0-6786234
    example-api-
    process
    example-api-v0-6327638
    example-api-
    process
    Router
    v0.example.com
    

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27. Blue-green Deployment
    http://martinfowler.com/bliki/BlueGreenDeployment.html
    #ABBDevDay
    

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28. Router
    v0.example.com
    #ABBDevDay
    example-api-v0-6327638
    example-api-
    process
    example-api-v0-6786234
    example-api-
    process
    

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29. Drain Requests
    #ABBDevDay
    https://flic.kr/p/79A7Db
    

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30. Router
    v0.example.com
    #ABBDevDay
    example-api-v0-6327638
    example-api-
    process
    example-api-v0-6786234
    example-api-
    process
    

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31. Router
    v0.example.com
    #ABBDevDay
    example-api-v0-6327638
    example-api-
    process
    example-api-v0-6786234
    example-api-
    process
    

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32. SemVer Your Software
    http://www.tugberkugurlu.com/archive/versioning-software-builds-based-on-git-tags-and-semantic-versioning-semver
    #ABBDevDay
    

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33. SemVer (semver.org)
    #ABBDevDay
    Patch
    No user facing changes
    Major
    Introducing incompatible changes
    Minor
    Add functionality in a backwards-
    compatible manner
    2.4.6
    

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34. SemVer as Way of Application Versioning
    • Support 2 Major versions of the HTTP Service, not 1, not 3.
    • Define a support policy for support lifetime for versions
    #ABBDevDay
    

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35. Minor-Patch Releases
    • No breaking changes
    #ABBDevDay
    

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36. example-api-v0-6327638
    example-api-v0-7814219
    example-api-v0-9528392
    LB
    v0.example.com
    example-api-
    process
    example-api-
    process
    example-api-
    process
    example-api-v0-6786234
    example-api-v0-3266280
    example-api-v0-8429842
    example-api-
    process
    example-api-
    process
    example-api-
    process
    

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37. DEMO
    https://github.com/tugberkugurlu/AspNetCoreSamples/tree/abbdevday2016/haproxy-zero-downtime-sample
    #ABBDevDay
    

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38. HAProxy Config Reload
    http://engineeringblog.yelp.com/2015/04/true-zero-downtime-haproxy-reloads.html
    #ABBDevDay
    

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39. Internal
    LB-1
    LB-1
    Internal
    LB-2
    server1
    server2
    server3
    server4
    server5
    server6
    server7
    server8
    server9
    server10
    client
    client
    client
    client
    client
    client
    #ABBDevDay
    

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40. Multiple Load Balancer Nodes
    http://robert.penz.name/386/howto-setup-a-haproxy-as-fault-tolerant-high-available-load-balancer-for-multiple-caching-web-proxies-on-rhelcentossl/
    #ABBDevDay
    

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41. #ABBDevDay http://robert.penz.name/386/howto-setup-a-haproxy-as-fault-tolerant-high-available-load-balancer-for-multiple-caching-web-proxies-on-rhelcentossl/
    

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42. Major Releases
    • Breaking Changes
    • First Major Release
    • Non-first Major Releases
    #ABBDevDay
    

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43. example-api-v0-6327638
    example-api-v0-7814219
    example-api-v0-9528392
    LB
    v0.example.com
    example
    Products
    example
    Products
    example
    Products
    example-api-v1-2276168
    example-api-v1-5677802
    example
    Products
    example
    Products
    LB
    v1.example.com
    example-api-v1-7182721
    example
    Products
    

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44. Prefer Fast-forward Database Changes
    #ABBDevDay
    https://flic.kr/p/54a6xY
    

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45. #ABBDevDay
    v1
    v2
    Id Make Model Colour
    1 Renault Clio Red
    2 Mercedes GLA Black
    3 Volkswagen Polo White
    4 Toyota Yaris Yellow
    Id Make Model Colour
    1 Renault Clio Red
    2 Mercedes GLA Black
    3 Volkswagen Polo White
    4 Toyota Yaris Yellow
    

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46. Do Not Override Client Side Assets
    #ABBDevDay
    

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47. #ABBDevDay
    v1
    v1.1
    

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48. #ABBDevDay
    v1
    v1.1
    

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49. Be Aware of the Context
    #ABBDevDay
    

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50. Be Aware of the Context
    • Cookies
    • Sessions
    • Authentication Tokens
    #ABBDevDay
    

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51. Sticky Sessions
    http://blog.haproxy.com/2012/03/29/load-balancing-affinity-persistence-sticky-sessions-what-you-need-to-know/
    #ABBDevDay
    

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52. Helpful Tools
    • Git (https://git-scm.com)
    • Travis CI (https://travis-ci.org)
    • Octopus Deploy (https://octopus.com)
    • HAProxy (http://haproxy.org)
    • node-semver CLI (http://bit.ly/1PO6hvR)
    • Docker (https://docker.com)
    • Docker Cloud (a.k.a. Tutum, http://bit.ly/1RYYtl2)
    • SQL Server Data Tools (SSDT, http://bit.ly/1P7qETh)
    • DLM Automation Tools from Redgate (http://bit.ly/1VQ2rDm)
    #ABBDevDay
    

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53. @tourismgeek
    github.com/tugberkugurlu
    linkedin.com/in/tugberk
    https://flic.kr/p/edfM1R
    

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