This is my deployment automation for the OS and

• An SD card with Ubuntu 20.04. ubuntu-20.04.2-preinstalled-server-arm64+raspi.img
• DHCP static lease reservations (listed in inventory.yaml)
• SSH into the system once to set password (this can probably be automated with sshpass and expect)
• The password encrypted with ansible-vault, stored in inventory.yaml and the key at ~/ansible-vault-pw (see ansible.cfg)

The cluster currently consists of 3 Raspberry Pi 4Bs. rpi1 has 8GB of RAM, rpi2 and rpi3 have 4GB. All have PoE hats and a Samsung Evo 870 2.5" SSDs connected via a Sabrent USB 3.0 SATA adapter.

• Install Ansible
• Install dependencies: ansible-galaxy install -r requirements.yaml
• Run the playbook ansible-playbook kluster.yaml
• Optional - symlink ~/.kube/k3s.yml to config so kubectl works: ln -s ~/.kube/k3s.yml ~/.kube/config