Updated for Poller v2.0!
UniFi Clients: Prometheus Dashboard
If your UniFi Network has clients (it does), you want to get this dashboard. This dashboard displays detailed information for clients found in a UniFi controller. You should also get the Sites dashboard.
UniFi Poller is a small Golang application that runs on Windows, FreeBSD, macOS, Linux or Docker. The application opens a web port and when prometheus polls for data it translates the UniFi controller API metrics to Prometheus exported metrics.
Ubiquiti makes networking devices like switches, gateways (routers) and wireless access points. They have a line of equipment named UniFi that uses a controller to keep stats and simplify network device configuration. This controller can be installed on Windows, macOS and Linux. Ubiquiti also provides a dedicated hardware device called a CloudKey that runs the controller software.