Today I added a fourth node to my little cluster. I added a 4GB model Pi 4, which now gives me 2 4gb models and 2 2gb models. I have another 4gb model which was going to upgrade one of the 2gb ones, but that is going to be my new development Pi for other project and paired with a touchscreen. I've also increased my microSD cards to 32gb cards from the 16gb ones that were in there.

Having has limited success with the microk8s snap install I'm going to spend the weekend installing the standard k8s to them. Fingers crossed, good times lay ahead!