Initial Requirements

Basic stuff we need :

Install a operating system in each of the nodes
Arrange a ssh connection for the nodes
Prearrange the nodes for K3s installation

Installing the OS and arrange an ssh connection to the nodes

Attention: the kubernetes flavor I am going to play with is k3s. After many tests with previous versions of the project, I have come to the conclusion that the best OS version for this is Bullseye. This particular OS variant doesn’t include a desktop environment, thus, SSH will be our primary method for node installation.

Bullseye1

Before you flash the OS onto the SD Card, it’s crucial to configure the node name and login details for each node.

Bullseye2

Information and procedure can be followed on the Raspberry Pi official page (link below), simply keep in mind:

Raspberry pi OS


    # We have to install version 64bits lite (no desktop necessary) `
    # We have to activate ssh connection
    # Important:Tested diverse versions of SO, Debian bullseye seem to be the most suitable

Config static IP for Pi

By default, Pi OS will use DHCP to receive random Ip from the router, so to ensure the stable connectivity between the node We will config the status IP for each node by using the following steps.


    # Open the file dhcpcd.conf

    sudo nano /etc/dhcpcd.conf

    # update the below parameters according to your router ip-address.   
    interface eth0
    static ip_address=192.168.1.85/24
    static routers=192.168.1.254

    # select control + X and save the changes.