During a conference at Djurönäset, the trusty Raspberry Pi cluster was used to demonstrate the setup and running of a Kubernetes cluster, as well as introducing its basic components, such as nodes, controllers, kubelets, proxies, namespaces, pods, services, labels, and selectors, ingresses and more.
With it, it was also easy to demonstrate the robustness of a K8S cluster by simply pulling the plug on one or more of the RPis and watch the controller’s Web UI as the workloads migrated from the defunct nodes to the remaining ones.
Fun for all, and of course all the wires and blinking lights of the cluster made it a little extra fun. After all, what kind of techie would not be charmed by wires and blinking lights?
All in all, a highly appreciated and informative introduction to Kubernetes for those whose daily work does not necessarily involve interaction with Kubernetes.