Kubernetes for the Mesos User

Talk for the Denver Mesos User Group

Transcript

1. Kubernetes for the Mesos User Denver Mesos Users Group, July 12 2016 1
2. Brian Hicks brian@aster.is @brianhicks Denver Mesos Users Group, July 12 2016 2
3. Denver Mesos Users Group, July 12 2016 3
4. Demo! Denver Mesos Users Group, July 12 2016 4
5. Kubernetes? Kubernetes is an open-source platform for automating deployment, scaling, and operations of application containers across clusters of hosts. 4 kubernetes.io (emphasis mine) Denver Mesos Users Group, July 12 2016 5
6. Web Interface Denver Mesos Users Group, July 12 2016 6
7. Denver Mesos Users Group, July 12 2016 7
8. Denver Mesos Users Group, July 12 2016 8
9. Scheduling Denver Mesos Users Group, July 12 2016 9
10. Mesos 2-level scheduler, based on resources 1. Workers offer resources to masters 2. Masters offer resources to frameworks 3. Frameworks accept resource offers 4. Work gets scheduled Denver Mesos Users Group, July 12 2016 10
11. Kubernetes Multi-step constraint-based scheduler 1. Find "suitable" nodes for pod 2. Rank best nodes - for example, by least scheduled 3. Work gets scheduled Denver Mesos Users Group, July 12 2016 11
12. Application Definition Denver Mesos Users Group, July 12 2016 12
13. Marathon { "id": "basic-0", "cmd": "while [ true ] ; do echo 'Hello Marathon' ; sleep 5 ; done", "cpus": 0.1, "mem": 10.0, "instances": 1 } Denver Mesos Users Group, July 12 2016 13
14. Kubernetes --- apiVersion: extensions/v1beta1 kind: Deployment metadata: name: basic-0 spec: replicas: 1 template: metadata: labels: app: basic-0 spec: containers: - name: basic-0 image: docker.io/gliderlabs/alpine:3.2 resources: limits: cpu: 100m memory: 10Mi args: - /bin/sh - -c - while [ true ] ; do echo Hello Kubernetes ; sleep 5 ; done Denver Mesos Users Group, July 12 2016 14
15. Kubernetes (CLI) kubectl run \ basic-0 \ --image=docker.io/gliderlabs/alpine:3.2 \ --limits="cpu=100m,memory=10Mi" \ -- /bin/sh -c 'while [ true ] ; do echo Hello Kubernetes ; sleep 5 ; done' Denver Mesos Users Group, July 12 2016 15
16. When K8s, when Mesos? Denver Mesos Users Group, July 12 2016 16
17. Fault Tolerance: Tie! Denver Mesos Users Group, July 12 2016 17
18. Data Frameworks: Mesos Denver Mesos Users Group, July 12 2016 18
19. 12-factor Apps: K8s Denver Mesos Users Group, July 12 2016 19
20. UI: Mesos Denver Mesos Users Group, July 12 2016 20
21. CLI: K8s Denver Mesos Users Group, July 12 2016 21
22. IP-Per-Container: K8s Denver Mesos Users Group, July 12 2016 22
23. Multitenancy: K8s Denver Mesos Users Group, July 12 2016 23
24. Questions? Denver Mesos Users Group, July 12 2016 24