Cloud Platforms “demystified” Docker, Kubernetes, Knative & Cloud Foundry Matthias Haeussler,
 Novatec Consulting GmbH 1

Agenda 2 • Who am I? • Why this talk? • Historical Timeline • What is a platform? • Technologies • Kubernetes • Cloud Foundry • Knative • Demo • Final comparison

Novatec Cloud Consultant Stuttgart Cloud Foundry Meetup Organizer @maeddes

@novatecgmbh #whoarewe - Novatec

Hype & Reality

Hype & Reality

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

Apps Services Push Start/ Stop Scale Delete Routes Create/Delete Map/Unmap Create/Delete Bind/Unbind Minimal Concepts

Deployments Services NetworkPolicies LoadBalancer NodePort ReplicaSet StatefulSet ClusterIP Ingress Pods Container IngressControllers HPA ConfigMaps Secrets apply YAML YAML YAML Minimal Concepts Docker Image

Hype & Reality

No content

What is a platform? (also known as Humans and Computers) 12

App Dev DB Systems Admin “Provider” Platform Admin Secrets/Config Source Code Build Artifact Buildpacks / Images Containers Git CI/CD

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

Workload Abstraction Layers Virtual Machines Container Applications Functions Platform Support? • Functions • Event-Driven • 12-factor apps • Stateful apps • more “types”?

Easy to do the right thing 16

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

“Image build” runtime app app runtime base container runtime app Kubernetes Basics - Container

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

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

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 !!!!!!!%!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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)

app buildpack cf push app Applications Services container route cf bind-service Basics

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

What’s new “run CF workloads/apps on K8s”

Traditional

New

cf push kubectl create

What’s new “run CF on K8s”

Traditional

New

What’s new

cf push $ cf push sample-app $ cf scale sample-app-java -i 4 $ cf ssh sample-app-java

$ 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

$ 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

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)

VM Kubernetes Istio Serving Eventing Build

VM Kubernetes Istio Serving Eventing

VM Kubernetes Istio Serving Eventing Tekton

“Image build” runtime app app runtime base container runtime app

kn service create —image=maeddes/test service route configuration revision revision revision

Route Revision Service Minimal Concepts Image

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

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

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

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

provides most container platform technical capabilities + easy devX + “containerless” + scale to zero + revisions + percentage routing

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

Try at home up --gke/az --cf github.com/starkandwayne/ bootstrap-kubernetes-demos up --gke/az up --gke/az --knative up --gke/az --kpack

Come to our booth! (under the balloon :))

Novatec Consulting GmbH Dieselstraße 18/1 D-70771 Leinfelden-Echterdingen T. +49 711 22040-700 [email protected] www.novatec-gmbh.de 51