I kinda understood this. Have heard of docker clusters, and I know kubernetes is like docker.

@cloud fodder introduced me to the systemd container system, what was it called? i forget. main disadvantage compared to docker is you have to build the container in one go, no aufs/btrfs/overlayfs. i think his spamblaster still uses it. he directed me to this thing. what was it, nsomething, i forget