Cloud-Plattformen entmystifiziert: Was können Docker, Kubernetes, Cloud Foundry & Knative?

OOP 2020, München, Germany

Transcript

1. Cloud Platforms “demystified” Docker, Kubernetes, Knative & Cloud Foundry Matthias Haeussler,
 Novatec Consulting GmbH 1
2. Agenda 2 • Who am I? • Why this talk? • Historical Timeline • What is a platform? • Technologies • Kubernetes • Cloud Foundry • Knative • Demo • Final comparison
3. Novatec Cloud Consultant Stuttgart Cloud Foundry Meetup Organizer @maeddes
4. @novatecgmbh #whoarewe - Novatec
5. Hype & Reality
6. Hype & Reality
7. LXC Container/Platform history 2018 2017 2014 2013 2011 2008 1979 …. … … . chroot Cloud Foundry Virtualization and isolation in subsystems. Examples: FreeBSD Jails, Linux VServer cgroups (2007) namespaces (2002) istio knative kubernetes eirini
8. Apps Services Push Start/ Stop Scale Delete Routes Create/Delete Map/Unmap Create/Delete Bind/Unbind Minimal Concepts
9. Deployments Services NetworkPolicies LoadBalancer NodePort ReplicaSet StatefulSet ClusterIP Ingress Pods Container IngressControllers HPA ConfigMaps Secrets apply YAML YAML YAML Minimal Concepts Docker Image
10. Hype & Reality
12. What is a platform? (also known as Humans and Computers) 12
13. App Dev DB Systems Admin “Provider” Platform Admin Secrets/Config Source Code Build Artifact Buildpacks / Images Containers Git CI/CD
14. Day 0 Day 1 Day 2 Day 3 • Architecture • Design • Implementation • Code-to-Repo • Build • Package • Containerize • Deploy • Multi-Tenancy • Run • Scale • Recover • Update & Patch • Observe • Version • Delete • Clean Up • End of Life Platform coverage Developer & Operator responsibility
15. Workload Abstraction Layers Virtual Machines Container Applications Functions Platform Support? • Functions • Event-Driven • 12-factor apps • Stateful apps • more “types”?
16. Easy to do the right thing 16
17. Kubernetes Intro • Container Runtime/Platform • Founded in 2013, released in 2014 • Idea based on Google’s internal platform Borg • Not opinionated, open, extensible & configurable • Major project of the Cloud Native Computing Foundation (CNCF) landscape
18. “Image build” runtime app app runtime base container runtime app Kubernetes Basics - Container
19. runtime app runtime app kubectl create pod replica set runtime app runtime app pod v2 replica set v2 deployment service/ingress endpoint Kubernetes Basics - Orchestration
20. Day 0 Day 1 Day 2 Day 3 • Architecture • Design • Implementation • Code-to-Repo • Build • Package • Containerize • Deploy • Multi-Tenancy • Run • Scale • Recover • Update & Patch • Observe • Version • Delete • Clean Up • End of Life Build source Build container Register image Kubernetes responsibility
21. kubectl apply !!!!!!!"!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! # kubectl apply -f deployment.yaml !!!-!!!$!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 1 # apiVersion: apps/v1 2 # kind: Deployment 3 # metadata: 4 # name: sample-app-nodejs 5 # spec: 6 # selector: 7 # matchLabels: 8 # app: sample-app-nodejs 9 # replicas: 3 10 # template: 11 # metadata: 12 # labels: 13 # app: sample-app-nodejs 14 # spec: 15 # containers: 16 # - name: sample-app-nodejs 17 # image: index.docker.io/starkandwayne/sample-app-nodejs:latest 18 # --- 19 # apiVersion: v1 20 # kind: Service 21 # metadata: 22 # name: sample-app-nodejs 23 # spec: 24 # selector: 25 # app: sample-app-nodejs 26 # type: LoadBalancer 27 # ports: 28 # - protocol: TCP 29 # port: 80 30 # targetPort: 8080 !!!!!!!%!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
22. Cloud Foundry Intro • Platform as a Service (PaaS) • Founded in 2008, released in 2011 • Fast and easy to build, test, deploy & scale apps • Opinionated, focus on simplicity for dev “Here is my source code, run it on the cloud for me - I do not care how” (Onsi Fakhouri, Pivotal)
23. app buildpack cf push app Applications Services container route cf bind-service Basics
24. Day 0 Day 1 Day 2 Day 3 • Architecture • Design • Implementation • Code-to-Repo • Build • Package • Containerize • Deploy • Multi-Tenancy • Run • Scale • Recover • Update & Patch • Observe • Version • Delete • Clean Up • End of Life Provide source or binary Cloud Foundry responsibility
25. What’s new “run CF workloads/apps on K8s”
26. Traditional
27. New
28. cf push kubectl create
29. What’s new “run CF on K8s”
30. Traditional
31. New
32. What’s new
33. cf push $ cf push sample-app $ cf scale sample-app-java -i 4 $ cf ssh sample-app-java
34. $ cf push sample-app $ kubectl get pods -n scf-eirini NAME READY STATUS sample-app-dev-bb89da1431-0 1/1 Running $ cf scale sample-app-java -i 4 $ kubectl get pods -n scf-eirini NAME READY STATUS sample-app-dev-bb89da1431-0 1/1 Running sample-app-dev-bb89da1431-1 0/1 ContainerCreating sample-app-dev-bb89da1431-2 0/1 ContainerCreating sample-app-dev-bb89da1431-3 1/1 Running $ kubectl exec -ti -n scf-eirini \ sample-app-dev-bb89da1431-0 bash cf push eirini
35. $ kubectl get pods -n scf NAME READY STATUS cf-operator-894886ff9-5s4zx 1/1 Running scf-adapter-v1-0 5/5 Running scf-api-v1-0 17/17 Running scf-bits-v1-0 7/7 Running scf-cc-worker-v1-0 5/5 Running scf-database-v1-0 5/5 Running scf-diego-api-v1-0 6/6 Running scf-doppler-v1-0 11/11 Running scf-eirini-v1-0 6/6 Running scf-log-api-v1-0 8/8 Running scf-nats-v1-0 5/5 Running scf-router-v1-0 6/6 Running scf-scheduler-v1-0 10/10 Running scf-singleton-blobstore-v1-0 7/7 Running scf-uaa-v1-0 7/7 Running update-all-cf-buildpacks-8d9lb 0/1 Completed cf push quarks
36. Knative • Open Sourced and initiated by Google • Support by Red Hat, Pivotal, IBM … • Runs on top of Kubernetes and Istio • Focus on symplifying K8s experience and provide serverless capabilities • Auto-scale on request load (down to 0)
37. VM Kubernetes Istio Serving Eventing Build
38. VM Kubernetes Istio Serving Eventing
39. VM Kubernetes Istio Serving Eventing Tekton
40. “Image build” runtime app app runtime base container runtime app
41. kn service create —image=maeddes/test service route configuration revision revision revision
42. Route Revision Service Minimal Concepts Image
43. Day 0 Day 1 Day 2 Day 3 • Architecture • Design • Implementation • Code-to-Repo • Build • Package • Containerize • Deploy • Multi-Tenancy • Run • Scale • Recover • Update & Patch • Observe • Version • Delete • Clean Up • End of Life Build source Build container Register image Knative Serving
44. Day 0 Day 1 Day 2 Day 3 • Architecture • Design • Implementation • Code-to-Repo • Build • Package • Containerize • Deploy • Multi-Tenancy • Run • Scale • Recover • Update & Patch • Observe • Version • Delete • Clean Up • End of Life Knative Serving (Knative) Tekton
45. kn service create $ kn service create \ springonedemo -n test-app \ --image drnic/springonedemo $ bootstrap-system-knative kwt test-app $ curl http://springonedemo.test-app.example.com Hello World! $ kubectl get pods -n test-app NAME READY STATUS kwt-net 1/1 Running springonedemo-1-deployment-nbg2j 2/2 Running … wait… $ kubectl get pods -n test-app NAME READY STATUS kwt-net 1/1 Running springonedemo-1-deployment-nbg2j 2/2 Terminating
46. istio knative $ kubectl get pods -n istio-system NAME READY STATUS cluster-local-gateway-5c566fd544-86wfw 1/1 Running cluster-local-gateway-5c566fd544-tx2p7 1/1 Running istio-ingressgateway-6c6cbf558b-kh6l8 2/2 Running istio-ingressgateway-6c6cbf558b-r6vpb 2/2 Running istio-pilot-7b6d979db8-vtmj9 1/1 Running $ kubectl get pods -n knative-serving NAME READY STATUS activator-68d9f95cd-9z4nz 1/1 Running autoscaler-5655c9fcfd-6x4jp 1/1 Running autoscaler-hpa-8668fc6f68-9vsfr 1/1 Running controller-5b77c5596c-qckcm 1/1 Running networking-istio-6d7d44d879-gz6j6 1/1 Running webhook-75b4fc9999-gwrp9 1/1 Running
47. provides most container platform technical capabilities + easy devX + “containerless” + scale to zero + revisions + percentage routing
48. Day 0 Day 1 Day 2 Day 3 • Architecture • Design • Implementation • Code-to-Repo • Build • Package • Containerize • Deploy • Multi-Tenancy • Run • Scale • Recover • Update & Patch • Observe • Version • Delete • Clean Up • End of Life Knative Serving Build source Build container Register image Knative Serving (Knative) Tekton Knative Serving Provide source or binary Platform coverage Human responsibility Build source Build container Register image Kubernetes responsibility Cloud Foundry responsibility
49. Try at home up --gke/az --cf github.com/starkandwayne/ bootstrap-kubernetes-demos up --gke/az up --gke/az --knative up --gke/az --kpack
50. Come to our booth! (under the balloon :))
51. Novatec Consulting GmbH Dieselstraße 18/1 D-70771 Leinfelden-Echterdingen T. +49 711 22040-700 info@novatec-gmbh.de www.novatec-gmbh.de 51