Monitoring Xen Hypervisor - How?

I’m wondering how others are monitoring their Xen Hypervisor (v8.2).
Is there a way to get the system resources used like CPU, memory, disks, etc.?

I’ve just found that metrics are exposed as RRDs which can be fetched by http in the docs which doesn’t make sense for me (

For the new release “Xen Server 8” (which we aren’t using yet) the docs do show a way to get data via NRPE and SNMP (

The plugins in Icinga Exchange are rather old (7+ years).
Is there a plugin which is still maintained?

Many thanks for any useful information.