I did the same in the last few days, although I run everything on a single-node k3s cluster. There are some caveats when trying this that one should be aware o

I did the same in the last few days, although I run everything on a single-node k3s cluster. There are some caveats when trying this that one should be aware of. For example there are some bugs with the iptables binary that result in megabytes of duplicate iptables rules after a few days, slowing everything down to a crawl (k3s issue 3117) Also, lots of software on Dockerhub etc. still don't supply arm64 binaries, which means you will have to build your own containers for them if you want to use them. Other than that, RaspberryPi 4's make excellent Kubernetes nodes (at least if you get the 8GB version, since even though k3s is reportedly a lightweight Kubernetes alternative, it still needs a couple hundred megabytes of RAM just for the k3s-server binary)