picluster
Open Source
Quick Description
piCluster is a command line tool for turning a stack of Raspberry Pi 4 boards into a managed cluster. It provisions new nodes with either Fedora CoreOS or Ubuntu Server, and gives you menu driven options to rebuild nodes, manage clusters, list what's running, and test connectivity across the whole set.
Building a Pi cluster by hand means flashing cards, configuring each OS, and wiring up networking, all of it repetitive and easy to get subtly wrong. piCluster makes the process consistent and repeatable, which is exactly what you want when you're running a home lab or experimenting with distributed systems on affordable hardware.