Host (inside the VM) is a plain Ubuntu 18.04 + Docker 18.06 and Kubernetes 1.13.
Currently I have 1 Master and 2 Workers.
I tried to use LXC (and it worked), but for some reason the same setup resulted in 50% (yes, 50%) IOWAIT with LXC in comparison to 4-5% in the 3 KVMs. I didnt really care to look too far into the reason.
The server I run it on only has 2 7200rpm SATA drives in Raid 1, so its obviously not the best thing youd want for massive load or an actual production setup.
But its basically my playpen + some private "production" servers, so with 1 User the performance doesnt really matter.
Any specific questions you have?