etcd @ GoSF

Talk given at GoSF on Jan 15th 2014.

etcd is here: https://github.com/coreos/etcd

Raft visualization is here: http://thesecretlivesofdata.com/raft/

Raft home here: http://raftconsensus.github.io/

Talk given at this event: http://www.meetup.com/golangsf/events/146084182/

Transcript

1. etcd @BrandonPhilips github.com/philips
2. A highly-available key value store for shared configuration and service discovery.
3. Apache 2.0 licensed
4. Written in Go
5. Highly Available
6. Available
7. Available
8. Available
9. Unavailable
10. Key Value Store
11. • /services • /db0 • /db1 • /messages • /hello
12. GET /messages/hello “Hello World”
13. Shared Configuration
14. { "password": "cleartext", "user": "root" }
15. Discovery
16. Discovery & Locking
17. App etcd DB?
18. App etcd No DB
19. App etcd I will watch and wait
20. App etcd DB Master? watch
21. App etcd No DB Master You are it now. DB master appeared
22. App etcd Heartbeat SELECT * from Awesome watch
23. App etcd DB master? Heartbeat watch
24. App etcd master exists Heartbeat watch
25. App etcd Heartbeat watch Heartbeat
26. App etcd watch Heartbeat
27. App etcd You are master new master DB SELECT * from Awesome
28. App etcd DB master? Heartbeat
29. App etcd master exists
30. • Database master election • Elastic IP configurations • Creating NNN number of workers
31. Raft
32. consensus across machines x = blue x = cow x = 1
33. Cmd + Tab Raft Visualization
34. etcd cluster
35. etcd API introduction
36. go-etcd
37. github.com/coreos/go-etcd/etcd • NewClient() / SyncCluster() • Consistency • Set/Get/Delete/Create
38. goraft
39. raft.Server
40. raft.Server • server.Do()
41. raft.CommandApply
42. raft.Command • Apply()
43. So why use etcd?
44. • Cluster configuration • API • Dashboard • Profiling • Logging • etc
45. Shameless CoreOS, Inc Plug
47. 3 full-time developers
48. We need help.
49. brandon.philips@coreos.com