Getting Into the Zero Downtime Deployment World

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

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

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

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

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

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

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

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

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

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

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

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#ABBDevDay http://zleek.com

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

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Our Scope #ABBDevDay

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Scope of the Talk #ABBDevDay HTTP Services Web Sites

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

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

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#ABBDevDay

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

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#ABBDevDay

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

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

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

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True Staging Environment #ABBDevDay

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

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

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

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

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

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

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

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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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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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Minor-Patch Releases • No breaking changes #ABBDevDay

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

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

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

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

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#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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Do Not Override Client Side Assets #ABBDevDay

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#ABBDevDay v1 v1.1

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#ABBDevDay v1 v1.1

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Be Aware of the Context #ABBDevDay

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

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