Kubernetes - The new platform

Asturias Hacking - Jan 2018

Transcript

1. Kubernetes the new platform
2. Raúl Naveiras @rnaveiras / raul@bebanjo.com / bebanjo.com
3. Obligatory Background
4. Image by Connie Zhou
6. Greek for "Helmsman" Runs and manage containers Inspired and informed by Google's experiences
7. Support multiple cloud and bare-metal environments Supports multiple containers runtimes 100% open source, written in Go
8. A group of one or more containers co-located, co-schedule, run in a shared context Pod Pod Web Server Consumers
9. contains one or more application containers which are relatively tightly couple Pod File Puller Web Server Volume Consumers Content Pod
10. Pods have IPs which are routable No brokering of port numbers Pod 10.1.3.17 Pod Networking Pod 10.1.2.4 Pod 10.1.1.21
11. A given pod is not rescheduled Relatively ephemeral entities Life of a Pod
12. Ensures a specify number of pods "replicas" e.g. process supervisor Replica Set
13. Identify attributes of objects that are meaningful and relevant to users Can be used to Organize and to select subject of objects Labels
14. Equality-based requirement Set-based requirement Label Selector env = production tier != web env in (production, qa) tier notin (web, worker) tenant !tenant
15. A logical grouping of pods that perform the same function It has a unique stable Virtual IP Service Pod Pod Pod Service Client VIP tier = web tier = web tier = web label selector: tier = web
16. Provides declarative updates for Pods and Replica Sets Describe the desired state Deployment
17. Demo
18. High Level Design nodes master users kubelet kubelet kubelet kubectl etcd apiserver scheduler controller manager
19. Namespaces Secrets ConfigMaps HPA Ingress Resources Jobs DaemonSets Cron Jobs Volumes Persistent Volumes Resource Quotas Network Polices
20. Security Context Pod Security Polices Service Accounts RBAC Third Party Resources Node affinity and anti-affinity Multi-scheduler support Device scheduling (e.g. GPUS)
21. Federation k8s cluster usa-3 k8s cluster asia-2 k8s cluster europe-1 federation control plane
22. Kubernetes 1.5
23. Improve Federation Support StatefulSet Simplified Cluster Deployment Node Robustness and Extensibility
25. We're hiring http://bebanjo.com/careers
26. Thanks!