Installing k3s to Ubuntu on Raspberry Pi 4

I'll walk you through installing k3s to Ubuntu 20 on Raspberry Pi 4 - including how to edit your cmdline.txt file to enable cgroups using my k3sup tool.
Links:
k3sup.dev/
store.openfaas...

[@SuKetWong]

Life saver saver, thanks! Great info at the editing /boot/firmware/cmd.txt

[@AlexEllis]

This is the readme file at k3sup.dev

[@jaschadee1106]

Thanks for the effort

[@papasy228]

I'm using ubuntu 18.04.6 on 9 Raspberry pi's and I had to add cgroup_enable=cpuset cgroup_memory=1 cgroup_enable=memory to /boot/firmware/nobtcmd.txt and reboot

[@HP-mi8tr]

thank you ! solve my problem!

[@maxbernard1393]

Hi Alex, I've been learning a lot about kubernetes in general and k3s in particular, by following your video tutorials. I am currently trying to set up an HA cluster using 3 Raspberry Pi 4s for the control / data plane with embedded etcd, and 3 worker nodes. I have finally got to the point where I am able to join the additional masters to the first server through the tls-san without any errors, using kube-vip as a load balancer for the control plane. I think that the fact that I got no errors would suggest that the join was successful. However, the new masters don't show up when I do a kubectl get nodes. I only see the original first master node, and the worker nodes. Have you any idea what might cause this behavior?

[@singalong8836]

I am using raspberrypi3 b+ which has 1 gb ram and armv8 arch. I have installed k3s with single node cluster (k3s servers as workers)disabling traefik and I am seeing 535 mb memory for k3s server . I then have set GOGC value to 10 in k3s systemd and then restarted k3s service and now I could see 300mb of memory consumed by k3s . Is there a way we can bring the k3s memory to 200 mb?