Kubernetes: The Operating System for the Cloud

https://angelbeat.com/feb25/

Transcript

1. © 2020, Amazon Web Services, Inc. or its Affiliates. Eddie Zaneski Senior Developer Advocate @AWS @eddiezane Kubernetes The Operating System for the Cloud
2. © 2020, Amazon Web Services, Inc. or its Affiliates. Your Experience 0: You are not using Kubernetes and don’t plan to 1: You are just starting on your Kubernetes journey . . . 5: You have been running Kubernetes in production for a few years
3. © 2020, Amazon Web Services, Inc. or its Affiliates. Agenda • Kubernetes -- what are you? • A short story • Advice on embarking
4. © 2020, Amazon Web Services, Inc. or its Affiliates. What is a container?
5. © 2020, Amazon Web Services, Inc. or its Affiliates. What is a container? “A container is a standard unit of software that packages up code and all its dependencies so the application runs quickly and reliably from one computing environment to another.” – Docker https://www.docker.com/resources/what-container
6. © 2020, Amazon Web Services, Inc. or its Affiliates. What is a container? “A container is a standard unit of software that packages up code and all its dependencies so the application runs quickly and reliably from one computing environment to another.” – Docker https://www.docker.com/resources/what-container
7. © 2020, Amazon Web Services, Inc. or its Affiliates. Container Evolution https://kubernetes.io/docs/concepts/overview/what-is-kubernetes/
8. © 2020, Amazon Web Services, Inc. or its Affiliates. Container Evolution https://kubernetes.io/docs/concepts/overview/what-is-kubernetes/
9. © 2020, Amazon Web Services, Inc. or its Affiliates. Container Evolution https://kubernetes.io/docs/concepts/overview/what-is-kubernetes/
10. © 2020, Amazon Web Services, Inc. or its Affiliates. What is Kubernetes?
11. © 2020, Amazon Web Services, Inc. or its Affiliates. What is Kubernetes? • Kubernetes is a container orchestration system which started as an open source project from Google. • Heart of the “Cloud Native” movement. • Designed to run everywhere from on-premises to the cloud. • Automatic scaling and self-healing. • Innovative declarative resource model.
12. © 2020, Amazon Web Services, Inc. or its Affiliates. Architecture https://kubernetes.io/docs/concepts/overview/components/
13. © 2020, Amazon Web Services, Inc. or its Affiliates. Architecture https://kubernetes.io/docs/concepts/overview/components/
14. © 2020, Amazon Web Services, Inc. or its Affiliates. Architecture https://kubernetes.io/docs/concepts/overview/components/
15. © 2020, Amazon Web Services, Inc. or its Affiliates. Architecture https://kubernetes.io/docs/concepts/overview/components/
16. © 2020, Amazon Web Services, Inc. or its Affiliates. Architecture https://kubernetes.io/docs/concepts/overview/components/
17. © 2020, Amazon Web Services, Inc. or its Affiliates. Architecture https://kubernetes.io/docs/concepts/overview/components/
18. © 2020, Amazon Web Services, Inc. or its Affiliates. Pod A pod is the basic unit of Kubernetes. It generally represents a container. Most resources have 4 fields: • apiVersion • kind • metadata • spec Don’t create these yourself.
19. © 2020, Amazon Web Services, Inc. or its Affiliates. Deployment A deployment represents a single app/service. This is the most common resource you’ll use. Completely isolated from other deployments by default. Notice the spec.template field is the same as the pod.
20. © 2020, Amazon Web Services, Inc. or its Affiliates. Service A service is how we make deployments accessible inside and outside our cluster. Three different types: • ClusterIP • NodePort • LoadBalancer
21. © 2020, Amazon Web Services, Inc. or its Affiliates. Cloud Native
22. © 2020, Amazon Web Services, Inc. or its Affiliates. https://landscape.cncf.io/
23. © 2020, Amazon Web Services, Inc. or its Affiliates. https://twitter.com/memenetes/status/1247630361242279936
24. © 2020, Amazon Web Services, Inc. or its Affiliates. https://twitter.com/dastbe/status/1303858170155081728
25. © 2020, Amazon Web Services, Inc. or its Affiliates. https://landscape.cncf.io/
26. © 2020, Amazon Web Services, Inc. or its Affiliates. 2017
27. © 2020, Amazon Web Services, Inc. or its Affiliates. https://wordpress.org/about/logos/
28. © 2020, Amazon Web Services, Inc. or its Affiliates.
29. © 2020, Amazon Web Services, Inc. or its Affiliates. YAML
30. © 2020, Amazon Web Services, Inc. or its Affiliates.
31. © 2020, Amazon Web Services, Inc. or its Affiliates. YAML
32. © 2020, Amazon Web Services, Inc. or its Affiliates. 2021
33. © 2020, Amazon Web Services, Inc. or its Affiliates. YAML
34. © 2020, Amazon Web Services, Inc. or its Affiliates. Where we’re at now • More mature with options • Increasingly complicated yet easier • Persistent storage is better • KEPs • Many fun problems still to solve
35. © 2020, Amazon Web Services, Inc. or its Affiliates. Advice
36. © 2020, Amazon Web Services, Inc. or its Affiliates. Home Lab • Extremely easy and inexpensive to get started with • Experiment and learn without risk • Play with the latest and greatest • K3s, Longhorn, PiHole, Home Assistant, etc
37. © 2020, Amazon Web Services, Inc. or its Affiliates.
38. © 2020, Amazon Web Services, Inc. or its Affiliates. Join the Community • Welcoming and inclusive • Contributions come in all shapes and sizes • https://git.io/JtFfE • https://www.kubernetes.dev • https://slack.k8s.io
39. © 2020, Amazon Web Services, Inc. or its Affiliates. Use Managed Services • Kubernetes, databases, etc • Figure out how much operational work you want to take on • Focus on building and not maintaining
40. © 2020, Amazon Web Services, Inc. or its Affiliates. Learn the Resource Model • Everything is an API • Group Version Resource (GVR) • https://kubernetes.io/docs/reference/kubernetes-api/ • kubectl explain • kubectl -v 7
41. © 2020, Amazon Web Services, Inc. or its Affiliates. Extend • Custom Resource Definitions (CRDs) • Admission Webhooks • Build a controller – https://book.kubebuilder.io/
42. © 2020, Amazon Web Services, Inc. or its Affiliates. In Summary • Take a breath • Start small • Break things • Have fun while doing it • Join the community
43. © 2020, Amazon Web Services, Inc. or its Affiliates. Thank you! @eddiezane