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Any examples of what their products cannot do as effectively as their marketing department say. Just curious :)

Yeah, as someone who's considered using them I would very much appreciate any information about practical shortfalls

Definitely the easiest way to set up a bare metal cluster.

Make sure you backup the rancher instance, or you won't be able to recover the cluster if something goes wrong.

Built in monitoring doesn't work very well on all hardware.

Mostly it's great, though.

I gave it a brief try a few times along with CoreOS for setting up dedicated container hosts. Only got a few hours in before I decided it was going to be a lot less hassle to just go with a normal Ubuntu Server install with Docker sitting on top of it.

If you can get away with just Docker, don't use Kubernetes.

Seriously.

I've use Rancher projects to do some amazing things for clients. Please, how does it fall short?