My homelab kubernetes cluster evolution. From a cluster based only on Raspberry PI nodes to support hybrid x86/ARM nodes, adding old refurbished mini PCs. All automated with Cloud-init, Ansible and ArgoCD :
How I made a Kubernetes cluster with five Raspberry Pis | Zenko
State of netbooting Raspberry Pi in 2021
Raspberry Pi Expansion Board
A 4-Node Raspberry Pi Cluster - Hackster.io
How to build a Raspberry Pi cluster - Raspberry Pi
6 Raspberry Pis, 6 SSDs on a Mini ITX Motherboard | Jeff Geerling
Amazon.com: Raspberry Pi 4 Cluster Case, iUniker Raspberry Pi 4 Case with Cooling Fan and Raspberry Pi 4 Heatsink for Raspberry Pi 4 Model B, 3 B+, Pi 3 B, Pi 2 B, Pi B+ (4-Layers) : Electronics
Oracle Shows 1060 Raspberry Pi Supercomputer at OOW
Building a bare-metal Kubernetes cluster on Raspberry Pi
Learn Docker and Kubernetes With the Turing Pi - IEEE Spectrum