Zero Downtime Deployment Golden Rules

I T.A.K.E Unconference 2016 (Bucharest, Romania)

Transcript

1. Zero Downtime Deployment Golden Rules Tugberk Ugurlu Redgate Software @tourismgeek http://tugberkugurlu.com #itakeunconf
2. @tourismgeek tugberkugurlu.com github.com/tugberkugurlu stackoverflow.com/users/463785/tugberk
3. @redgate
4. #itakeunconf Example HTTP APIs v1 Example Android iPhone Example Android Client Example Web Client Example HTTP APIs v1.1
5. Why Should I Care? #itakeunconf
6. http://customers.agriya.com/products/private-shop/features/maintenance-course #itakeunconf
7. https://twitter.com/tourismgeek/status/580270772402393088 #itakeunconf
8. Continuous Delivery #itakeunconf
9. #itakeunconf
10. Type of Products #itakeunconf
11. Type of Applications • HTTP Services • Web Sites #itakeunconf
13. Write Down the Deployment Strategy #itakeunconf
14. #itakeunconf
15. Script out the Deployment Strategy #itakeunconf
16. #itakeunconf
17. Release Management Software https://octopus.com/ #itakeunconf
18. #itakeunconf
19. True Staging Environment #itakeunconf
20. example-api-v0-6786234 example Products example-api-v0-6327638 example Products Router v0.example.com
21. Blue-green Deployment http://martinfowler.com/bliki/BlueGreenDeployment.html #itakeunconf
22. Router v0.example.com #itakeunconf example-api-v0-6327638 example Products example-api-v0-6786234 example Products
23. Drain Requests #itakeunconf
24. Router v0.example.com #itakeunconf example-api-v0-6327638 example Products example-api-v0-6786234 example Products
25. Router v0.example.com #itakeunconf example-api-v0-6327638 example Products example-api-v0-6786234 example Products
26. SemVer Your Software http://www.tugberkugurlu.com/archive/versioning-software-builds-based-on-git-tags-and-semantic-versioning-semver #itakeunconf
27. SemVer Your Software • See semver.org • Support 2 Major versions of the HTTP Service, not 1, not 3. • Define a support policy for support lifetime for versions #itakeunconf
28. Type of Changes • Patch: No user facing changes, all internal. • Minor: Add functionality in a backwards-compatible manner • Major: Introducing incompatible changes • See semver.org for more information #itakeunconf
29. Minor-Patch Releases • No breaking changes #itakeunconf
30. example-api-v0-6327638 example-api-v0-7814219 example-api-v0-9528392 LB v0.example.com example Products example Products example Products example-api-v0-6786234 example-api-v0-3266280 example-api-v0-8429842 example Products example Products example Products
31. DEMO https://github.com/tugberkugurlu/aspnetcoresamples/tree/itakeu16/haproxy-zero-downtime-sample #itakeunconf
32. HAProxy Config Reload http://engineeringblog.yelp.com/2015/04/true-zero-downtime-haproxy-reloads.html #itakeunconf
33. Internal LB-1 LB-1 Internal LB-2 server1 server2 server3 server4 server5 server6 server7 server8 server9 server10 client client client client client client #itakeunconf
34. 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/ #itakeunconf
35. #itakeunconf http://robert.penz.name/386/howto-setup-a-haproxy-as-fault-tolerant-high-available-load-balancer-for-multiple-caching-web-proxies-on-rhelcentossl/
36. Major Releases • Breaking Changes • First Major Release • Non-first Major Releases #itakeunconf
37. 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
38. Prefer Fast-forward Database Changes #itakeunconf
39. #itakeunconf 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 v1 v2
40. Do Not Override Client Side Assets #itakeunconf
41. #itakeunconf v1 v1.1
42. #itakeunconf v1 v1.1
43. Be Aware of the Context #itakeunconf
44. Be Aware of the Context • Cookies • Sessions • Authentication Tokens
45. Sticky Sessions http://blog.haproxy.com/2012/03/29/load-balancing-affinity-persistence-sticky-sessions-what-you-need-to-know/
46. Helpful Tools • HAProxy • Octopus Deploy • node-semver CLI • Docker • Docker Cloud (a.k.a. Tutum) • DLM Automation Tools from Redgate #itakeunconf