The 6 month Yak Shave

Transcript

1. The 6 month yak shave http://www.flickr.com/photos/lokar/3958675730/
2. We are a CMS app
3. And manage digital signage
4. First commit commit a03185170d9e33e829dd2162fdf10ab57f0333ef Date: Tue Apr 18 16:40:16 2006 +0000
5. App was single tenanted
6. One vm per customer
7. Slow deploys • too many steps • some deploys have taken 2+ months • one migration has been going on since January
9. Time go go multitenant
10. http://www.flickr.com/photos/shirokazan/3003817000/
12. Use separate schema per organisation
14. Time to switch database engines
15. Now to migrate, we need to run both, right?
16. Not enough resources in datacenter
17. Also driving to DC to deal with hardware at 3am sucks
18. Time to find a new hosting option
19. AU or US?
20. EC2?
21. http://www.flickr.com/photos/avlxyz/6758784553/
22. Managed hardware
23. Now have 3x ram, modern CPUs and it still costs less
24. Configuration management
25. Deprec had reached its usefulness
27. I like Chef more
28. Dependencies are less surprising
29. Two runs in a row do the same thing
30. Between testing, some early teething problems, production & staging...
31. Over 200 vm installs
32. And I still have my sanity
33. I ❤ Chef Search
34. Load balancer that configures itself
35. search(:apps).each do |app| role = app["server_roles"].first nodes = search(:node, "roles:#{role} AND chef_environment:#{node.chef_environment}") unless nodes.empty? web_apps << { "app" => app, "nodes" => nodes } end end
36. Nagios sucks... less
37. Future yaks
38. Move about 1TB of assets off of a shared NFS mount
39. Curent plan is Rackspace Cloud Files
40. Uses Akamai so actually has Australian front ends
41. One more thing...
42. www.worldipv6day.com Tomorrow
43. www.worldipv6day.com 2001:4801:1041:2a::161
44. Alan Harper @aussiegeek