CoreOS @ GlueCon 2015

Transcript

2. About Me CTO/CO-FOUNDER systems engineer @brandonphilips github.com/philips
3. What is CoreOS?
4. What is CoreOS?
7. What is CoreOS?
8. Why build CoreOS?
9. reduce API contracts minimal
10. kernel systemd etcd ssh docker python java nginx mysql openssl app distro distro distro distro distro distro distr
11. python java nginx mysql openssl app distro distro distro distro distro distro distr kernel systemd etcd ssh docker
12. python openssl-A app1 distro distro distro distro distro distro distr java openssl-B app2 java openssl-B app3 kernel systemd etcd ssh docker
13. CoreOS python openssl-A app1 distro distro distro distro distro distro distr java openssl-B app2 java openssl-B app3
14. CoreOS container distro distro distro distro distro distro distr container container
15. https://github.com/philips/hacks folder: system-api-tutorial APIs
16. Linux syscalls API
17. manual updates
18. automatic updates
19. automatic updates
20. atomic with rollback auto updates
23. omaha API
25. run and isolate apps containers
26. http registry image fetch
27. pid ns isolated pid 1
28. user ns isolated uid 0
29. network ns isolated netdev
30. mount ns isolated /
31. cgroups manage resources
32. cgroups count resources
33. cgroups limit resources
34. namespaces API
35. cgroups API
36. docker engine
37. REST API
39. dbus API
40. machines and clusters configuration
41. get into the cluster machine conf
42. #cloud-config ssh_authorized_keys: - ssh-rsa AAAAB3NzaC1yc2E… coreos: etcd: discovery: https://discovery.etcd.io/ba09c units: - name: etcd2.service command: start - name: fleet.service command: start
43. #cloud-config ssh_authorized_keys: - ssh-rsa AAAAB3NzaC1yc2E… coreos: etcd: discovery: https://discovery.etcd.io/ba09c units: - name: etcd2.service command: start - name: fleet.service command: start
44. #cloud-config ssh_authorized_keys: - ssh-rsa AAAAB3NzaC1yc2E… coreos: etcd: discovery: https://discovery.etcd.io/ba09c units: - name: etcd2.service command: start - name: fleet.service command: start
45. REST hypercalls filesystems API
46. what is running cluster conf
47. k8s, discoverd, confd services
48. what should run cluster conf
49. locksmith coordination
50. fleet, k8s scheduling
51. etcd API
52. etcd
53. /etc distributed
54. Available
55. Available
56. Available
57. Unavailable
58. Available Leader Follower
59. Leader Follower Available
60. Leader Follower Temporarily Unavailable
61. Leader Follower Available
62. http+json API
63. getting work to servers scheduling
64. You Scheduler API Scheduler Machine(s)
65. $ kubectl run-container my-nginx --image=nginx --replicas=1 --port=80 $ kubectl get pods POD IP my-nginx-97wt8 10.2.29.4
66. http+json API
67. $ cat nginx.service [Service] ExecStart=/usr/bin/rkt \ docker://nginx $ fleetctl start nginx.service Job nginx.service launched on e1cd2bcd.../172.17.8.101
68. http+json API
69. while true { todo = diff(desState, curState) schedule(todo) }
70. while true { todo = diff(desState, curState) schedule(todo) }
71. while true { todo = diff(desState, curState) schedule(todo) }
72. while true { todo = diff(desState, curState) schedule(todo) }
73. the future