Kubernetes Scalability: Federation and ClusterAPI

Transcript

1. Kubernetes scalability: Federation & Cluster API @k_gamanji katie-gamanji
2. Katie Gamanji Cloud Platform Engineer Condé Nast @k_gamanji katie-gamanji
3. Kubernetes scalability: Federation & Cluster API @k_gamanji katie-gamanji
4. Condé Nast Platform Federation V2 ClusterAPI
5. Condé Nast Platform Federation V2 ClusterAPI
6. Condé Nast Platform Federation V2 ClusterAPI
7. Condé Nast Platform Federation V2 ClusterAPI
8. Has set the benchmark for print and digital publishing with a heritage of more than 110 years.
10. Markets 12 Websites 86 Unique users 336m Digital readership 1.6bn October 2019
13. Migrated websites 22/35 Digital readership 268m November 2019
14. Federation v2
15. Federation v2 Mechanism for managing applications and services in multiple Kubernetes clusters tracked by the Kubernetes cluster registry.
16. Federation v2 SIG multicluster: • Federation ◦ v1 - deprecated ◦ v2 (alpha) - requires v1.13 • Cluster registry ◦ maintain list of clusters and associated metadata
17. 1 / 4
18. Host cluster Member clusters 2 / 4
19. Host cluster Member clusters Cluster registry Federation APIs 3 / 4
20. Host cluster Member clusters Control plane 4 / 4 Applications & services
21. Federation v2 Cluster placement • targeted clusters by the federation Configuration overrides • patches to federated resources
22. Federation v2 Cluster Placement • clusters spec: placement: clusters: - name: cluster2 - name: cluster1 • clusterSelector spec: clusterSelector: matchLabels: region: eu-central-1
23. Federation v2 Configuration overrides • Replace (default), add or remove spec: overrides: - clusterName: cluster1 clusterOverrides: - path: "/spec/replicas" value: 5
24. apiVersion: types.kubefed.io/v1beta1 kind: FederatedDeployment metadata: name: nginx-deployment spec: template: spec: replicas: 3 [...] placement: clusters: - cluster2 - cluster1 overrides: - clusterName: cluster2 clusterOverrides: - path: "/spec/replicas" value: 7
25. Federation v2 DEMO https://asciinema.org/a/caUpnqVCUz2PP1Fui wPiDQfkj
26. Resource management Namespace scoped control plane Conditional scalability Takeaways Higher level behaviour
27. ClusterAPI
29. Russia China Unique users 10m Unique users 53m Total digital readership 335m
30. K8s Bootstrap Tools Kubeadm Kubespray Kops Tectonic
31. ClusterAPI Provision of declarative APIs for cluster creation, configuration, and management.
32. ClusterAPI SIG-cluster-lifecycle: • Initial release: April 2019 • API: v1alpha2
33. 1 / 4
34. Management cluster Target clusters 2 / 4 Controller managers
35. 3 / 4: Controller Managers Infrastructure Providers Bootstrap Providers ClusterAPI CRDs + +
36. Management cluster Target clusters 4 / 4 Controller managers
37. ClusterAPI - CRDs • Cluster - CIDRs for pods and services + DNS suffix • Machine - kubelet and control plane versions • MachineSet • MachineDeployment
38. ClusterAPI DEMO https://asciinema.org/a/DaMKYCSaHWu qFq1l4pEAZMKsR
39. Building blocks Cloud agnostic Experimental Takeaways
40. Condé Nast Platform Federation V2 ClusterAPI
41. References Federation v2 • https://medium.com/@k_gamanji/k8s-feder ation-v2-a-guide-on-how-to-get-started-ec9 cc26b1fa7 ClusterAPI • https://medium.com/@k_gamanji/clustera pi-a-guide-on-how-to-get-started-ff9a81262 945
42. https://www.condenast.com/careers @k_gamanji katie-gamanji