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Bootstrapping arm64 Raspberry Pi 4 nodes

64-bit arm ubuntu

See this wiki for details

bootable image

Download the 20.04 arm64 image and save to an SD card. etcher works well for this

manual setup

After flashing the image, re-mount the drive and copy the following files into <drive>/system-boot/:

  • user-data
  • network-config
  • cmdline.txt

scripted setup

This can be streamlined with the following script: bootstrap-k3s.sh:

./bootstrap-k3s.sh k3s-pi4-a /Volumes/system-boot

boot into newly-provisioned ubuntu arm64 node with k3os

It will take some time for the cloud-init settings above to execute, so you may need to wait a while (10 mins?) before attempting to ssh into the newly-provisioned node. as the 'ubuntu' user. The new node should auto-join the k3s cluster.