Microk8s cluster on a homelab (Proxmox) local network with a Fritzbox and Metallb

Homelab/server with Proxmox connected to my Fritzbox 7590 (XS4ALL NL) configured on home network 192.168.178.0/24 

Inside Proxmox I have 3 vms (ubuntu server 20.04 LTS) that I named k8s-{1,2,3}

During setup of the Ubuntu server vms I selected install openSSH and microk8s

In the fritzbox I selected the option to give proxmox host and k8s-1,2,3 always the same IP

After boot of servers:

On k8s-1 I did sudo microk8s add-node and ran the output on k8s-2, then I repeated that for k8s-3.

I enabled addons on k8s-1: sudo microk8s enable dns metallb

It will ask for an IP range, I opted for 192.168.100.0/24

Then in the Fritzbox, I went to network, network settings, more network settings, static routing tables

I added the route 192.168.100.0, 255.255.255.0, 192.168.178.x (ip of k8s-1), active, and I saved it.

Now I could test the Metallb:

wget https://raw.githubusercontent.com/charmed-kubernetes/metallb-operator/master/docs/example-microbot-lb.yaml
kubectl apply -f example-microbot-lb.yaml
kubectl get service microbot-lb

Under external IP you will find an IP from the 192.168.100.x range, it won't respond to ping, but you can retrieve it with curl or in the browser and show a page with a small picture of a robot.

kubectl delete -f example-microbot-lb.yaml will clean up the test deployment.


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