know your documentation clearly states that scheduling based on host resources is not supported in Rancher.
Swarm’s filter tries to provide an available host that fulfills various rresource requirements for the container. For example: $ docker run -ti -m 300M ubuntu:14.04 /bin/bash specifies to run on a host that has a minimum of 300MB.
If you don’t have some kind of resource constraint, I’ll have to add tooling to check my hosts to be sure the are not bogged down.
Is this feature on your road map?