Saturday Night Disco on Monday Morning

Service discovery must be hard, from ye olde SRV records and UDDI to hip new etcd and serf, we keep inventing new ways to help robots talk to each other. But instead of trying to pick a winner, let's review the space so you can figure out how let applications work with whatever's clever.

Transcript

1. https://www.flickr.com/photos/-staci-/3197185673 Saturday Night Disco on Monday Morning
2. Hi, I’m
5. adjustable capacity ! highly available ! low latency
6. adjustable capacity ! highly available ! low latency change capacity ! fail over ! switch data center
9. Name ➝ Connection Info
10. What kind of clusters?
11. LB
12. VIP s s M s
14. LB
15. Shared Nothing Master-Slave JBOS Auto-balancing
16. Service Facades Cluster Member Lists
17. Service Facade Proxy DNS Record Set Virtual IP
18. Cluster Member List Order Port Metadata
19. { "myface-facade": [! { "hostname": "myface-lb.example.net" } ],! "myface": [! { "hostname": “myface-docker-001.example.net",! "port": 49160 },! { "hostname": “myface-docker-002.example.net",! "port": 49086 } ],! ! ! "myface-db-master": [! { "hostname": "myface-db-master.example.net" } ],! "myface-db-slave": [! { "hostname": "myface-db-002.example.net" },! { "hostname": "myface-db-003.example.net" } ],! ! ! "statsd": [! { "hostname": "10.0.0.216" } ] }
21. Name ➝ Connection Info
22. Name ➝ Connection Info Across Time
23. Now you’ve got two problems
24. Consistency Propagation
25. Consistency Eventual Read-after-Writes Linearizable ! chef, serf dns, s3 zk, consul
26. Propagation PubSub Poll ! zk, etcd, serf dns, chef, consul
27. eventual ryw linearizable poll chef dns consul pubsub serf zk
29. but my app doesn’t like config from zk, dns, http!
30. Config management Agent Remote Exec confd ! cfengine ansible
31. Facade v Member Set Ordered Record Sets Locator + Metadata ! Consistency Propagation
33. Wait, what happened to the MySQL master?
34. M VIP s