JCON, October 2020, talk by Mario-Leander Reimer (@LeanderReimer, Chief Software Architect at QAware) == Please download slides if blurred! == Abstract: When it comes to running Kubernetes in resource constraint environments like your local developer workstation or edge and IoT devices a full-blown Kubernetes distribution is definitely not the right choice. Instead a new breed of super lightweight, certified Kubernetes distributions that (often) come as a single-binary are suited a lot better. In this session we will have a closer look at two popular choices: MicroK8s and K3s. We will briefly cover their basic features and then put both of them to the test live and uncut: locally, on my NUC powered Cloudkoffer and a few Raspi's. This talk will be hands on and totally fun to watch. It shows that as a developer you do not need a PhD in clusterology to install and run Kubernetes.

1. Lightweight Kubernetes
Running Kubernetes on Workstations, Edge and IoT Devices
@LeanderReimer #qaware #CloudNativeNerd #JCON2020

2. Mario-Leander Reimer
Principal Software Architect
@LeanderReimer
#cloudnativenerd #qaware

3. // JCON 2020 // Running K8s on Workstation, Edge and IoT Devices // @LeanderReimer #cloudnativenerd #qaware #JCON2020
Installing K8s in the Cloud is relatively easy.
3
Cloud / Data CenterCloud Layer
$ eksctl create cluster -n eks-demo -f cluster.yml
$ aksctl create cluster --name aks-demo -file cluster.yaml
$ gcloud container cluster create gke-demo

4. // JCON 2020 // Running K8s on Workstation, Edge and IoT Devices // @LeanderReimer #cloudnativenerd #qaware #JCON2020
Installing K8s on Fog, Edge and IoT is not so easy.
4
Cloud / Data Center
Fog Nodes
Devices
Gateways
Cloud Layer
Fog Layer
Edge Layer

5. // JCON 2020 // Running K8s on Workstation, Edge and IoT Devices // @LeanderReimer #cloudnativenerd #qaware #JCON20205
Do you have a PhD in
Kubernetes
clusterology?

6. // JCON 2020 // Running K8s on Workstation, Edge and IoT Devices // @LeanderReimer #cloudnativenerd #qaware #JCON2020
• CentOS 7.7 with Containerd
• Kubernetes 1.16 with K8s Dashboard
• Calico, External-DNS
• MetalLB + NGINX-Ingress
• Rook CephFS
• Cert-Manager, Sealed Secrets
• Elastic-Stack (Elasticsearch, Kibana, Fluentd)
• Prometheus, Grafana, Grafana Loki
• Istio, Knative, Jaeger
• Clair, Vault, Keycloak
6 // JCON 2020 // Running K8s on Workstation, Edge and IoT Devices // @LeanderReimer #cloudnativenerd #qaware #JCON2020

7. // JCON 2020 // Running K8s on Workstation, Edge and IoT Devices // @LeanderReimer #cloudnativenerd #qaware #JCON20207
https://en.wikipedia.org/wiki/Bus_factor

8. // JCON 2020 // Running K8s on Workstation, Edge and IoT Devices // @LeanderReimer #cloudnativenerd #qaware #JCON2020
https://k3s.iohttps://microk8s.io
8 // JCON 2020 // Running K8s on Workstation, Edge and IoT Devices // @LeanderReimer #cloudnativenerd #qaware #JCON2020

9. // JCON 2020 // Running K8s on Workstation, Edge and IoT Devices // @LeanderReimer #cloudnativenerd #qaware #JCON20209
5 x Intel NUC i3
5 x Raspberry Pi 3 CoM
miniNodes Carrier Board

10. // JCON 2020 // Running K8s on Workstation, Edge and IoT Devices // @LeanderReimer #cloudnativenerd #qaware #JCON2020
MicroK8s - Zero-ops Kubernetes
• Certified Kubernetes distribution. Backed by Canonical.
• Pure upstream, no APIs added or removed. Currently v1.19
• A single package of K8s for 42 flavours of Linux. Uses multipass to run a local Ubuntu
VM under Windows and Mac.
• Made for developers. Runs on cloud, workstations, Edge and IoT.
• Dozens of infrastructure add-ons: DNS, registry, dashboard, storage, RBAC, ingress,
MetalLB, GPU, Istio, Linkerd, Knative, fluentd, Prometheus, Jaeger, Ambassador,
Cilium, Helm, …
• High Availability and Multi-node cluster configuration supported.
10

11. // JCON 2020 // Running K8s on Workstation, Edge and IoT Devices // @LeanderReimer #cloudnativenerd #qaware #JCON2020
MicroK8s Demo
MicroK8s Demo
https://github.com/lreimer/lightweight-k8s

12. // JCON 2020 // Running K8s on Workstation, Edge and IoT Devices // @LeanderReimer #cloudnativenerd #qaware #JCON2020
K3s - 5 less than K8s
• Certified Kubernetes distribution. Backed by Rancher.
• Legacy, alpha, non-default features are removed. Currently v1.18.9+k3s1
• Suitable for Edge, IoT, ARM64, ARMv7, CI, Workstations and the Cloud
• LoadBalancer support with Traefik based Ingress.
• High Availability with an External DB or Embedded DB (experimental)
• Easy to install, run and auto-update. Single < 40MB binary.
• k3sup: from Zero to KUBECONFIG in < 1 min https://k3sup.dev/
12

13. // JCON 2020 // Running K8s on Workstation, Edge and IoT Devices // @LeanderReimer #cloudnativenerd #qaware #JCON2020
K3s Demo
https://github.com/lreimer/lightweight-k8s

14. Thank You !
JCON2020#
www.jcon.one
Our Partners 2020:
Mario-Leander Reimer
Principal Software Architect, QAware GmbH
mario-leander.reimer@qaware.de
https://www.qaware.de
https://speakerdeck.com/lreimer/
https://github.com/lreimer/

15. www.javapro.io
Das kostenlose Profi-Magazin für Java Entwickler !
Powered by