Its pretty, usable, friendly, however No one is going to use this to manage more then a few systems.
To me cockpit is firmly in the Pet sector whereas the Cattle way of doing things is clearly the one that scales better.
Some folks just have a couple pets to care for.
Disclaimer: I'm one of the founders
Note that all of my work is on networks that are disconnected from the internet, so I ignore SaaS offerings or versions completely.
Also, there's a Mist.io Enteprise Edition nowadays that you can install on-premises. There's more info about that at https://mist.io
http://cockpit-project.org/guide/133/feature-kubernetes.html https://www.youtube.com/watch?v=Fcfsu22RssU