in reply to
Canonical Landscape alternative
Sounds like someone in Cannonical decided to re-invent Nagios.
Nagios allows probes ('plugins' in Nagios) sitting on the leaf-systems to report back to an aggregation server (your Mother Ship). You can configure probes to do anything; literally anything -- report status, execute commands; impose resource limits, anything your heart desires (and you can code). There is a robust User Community around Nagios and a lot of pre-built plugins available.
I Go Back to Sleep, Now.