Running the k3s.sh from Ubuntu 22.04 and destination Raspberry PI nodes

[acasadoalonso]

I successfully run your script deploying K3S into a 7 raspberry nodes, thanks a lot ...

I just made the following modifications:
I updated the version of K3S to be v1.28.4+k3s2
I added a new variable called admuser to identify the userid of the Ubuntu server running the script, the users of the Raspberry Pis nodes are "pi"
I check if the cert files exist:

Move SSH certs to ~/.ssh and change permissions

if [-f /home/$admuser/$certName ]; then
cp /home/$admuser/{$certName,$certName.pub} /home/$admuser/.ssh
fi