Another option - Swift Fox ( https://swiftfox.net ) has supported monitoring ePMP radios, as well as most Cambium backhauls, for many years. This also includes automatic config backups, but it doesn’t do automated firmware upgrades or config rollouts. You just add the APs and it’ll pick up and monitor the CPEs directly - this works with shaping and disconnects and such, no Cambium controller needed.
Full disclosure, Swift Fox is my business, I just thought I’d mention it as a quick sort of plug and play option. The free open source NMS options out there are pretty good too, they’re just a bit more work to set up and maintain.