Build Scalable App with Docker

Transcript

1. Build Scalable App with Docker Allen Wei digruby@gmail.com allenwei.cn
2. About Me • Manager of Groupon Payments China • Ruby developer • iOS developer • DevOps • twitter: @allenwei • weibo: @魏伦
3. Docker
4. Docker
5. The Twelve Factor App • Setup automation • Portability • Easy to deploy • Continuous deployment • Scale up easily http://12factor.net/ Adam Wiggins
6. Disposability Maximize robustness with fast startup and graceful shutdown
7. Process Execute the app as one or more stateless processes
8. Backing Services Treat backing services as attached resources
9. Port binding Export services via port binding
10. Concurrency Scale out via the process model
11. Build, release, run Strictly separate build and run stages
12. Config Store config in the environment
13. More • Keep development, staging, and production as similar as possible • Treat logs as event streams • Run admin/management tasks as one-off processes
14. Problem • Container Management • Service Discovery • Health Check • Configuration Management
15. Shipyard
16. Shipyard
17. Shipyard
18. Shipyard
19. Fig http://fig.sh
20. Fig
21. Fig
22. Fig • fig build • fig up • fig start/stop • fig scale
23. Consul https://consul.io/
24. Service Discovery Consul API DNS
25. Consul API
26. Container Register • progrium/registrator • Listen to docker socket • Register when container started • Unregister when container stop • Register with meta data
27. Docker Registrator
28. Docker Registrator
29. Consul API
30. Consul API
31. Consul API
32. DNS Query
33. DNS RoundRobin
34. DNS Lookup
35. Failure Detection Health Check - Node Health Check - Service
36. Heath Check
37. Multi Datacenter Multi DataCenter Agent DataCenter Lookup
38. Key/Value Storage K/V Database Configuration Management
39. Key Value Store
40. Get value Recursively
41. Use ENV as configuration • Language- and OS-agnostic standard • More difficult to accidentally commit to a code repo • Environmental variables are easy to change between environments
42. Demo
43. Container Management
44. Cluster Management
45. Docker in Groupon 2015 Q1
46. One more thing
47. A Minimal Operating System Docker Containers Painless Updating Clustered By Default
48. Reference • https://hashicorp.com/blog/introducing-consul-template.html • https://github.com/hashicorp/consul-template • https://github.com/progrium/registrator • http://progrium.com/blog/2014/08/20/consul-service-discovery-with-docker/ • http://progrium.com/blog/2014/07/29/understanding-modern-service- discovery-with-docker/ • https://tech.bellycard.com/blog/load-balancing-docker-containers-with-nginx- and-consul-template/ • http://12factor.net/
49. Q & A thanks