The original post: /r/homelab by /u/domanpanda on 2024-11-06 11:22:04.

I have OKD/k8s cluster on my laptop (hp dev one with kubuntu 22.04) in Virtualbox. 3 masters, 2 workers, 1 “services” node, and also DNS (bind) node and openwrt node as a router. This is all connected together with NAT Network which makes it a separate “virtual LAN”. It works.

What i want to do is to add more nodes to the cluster. But i have no resources for that - almost 60 of 64GB ram is taken when cluster is up and i can’t add more RAM. I would love to add some additional (portable) machine (laptop? minipc?), connect it with cable with my laptop, install VBox there, create those additional machines and connect it to this NAT Network. I already have “work” laptop with windows with 32gb ram. It would be ideal for that.

So far the only idea i have is VPN -> create server (Wireguard? OpenVPN?) in Nat Network and forward port to it in openwrt. But that will complicate my setup a lot. And i don’t know how it will work with okd.

So is there easier way to do it? Like some clever bridging?

EDIT:

Currently i found some info about UDPTunnel and VDE. Yet i don’t see such options under “Generic Driver”.

https://forums.virtualbox.org/viewtopic.php?p=468778#p468778