*collectd* is now running on *k8s-aarch64-n0.pyrocufflink.blue*,
exposing system metrics. As it is not a member of the AD domain, it has
to be explicitly listed in the `scrape_collectd_extra_targets` variable.
*nvr1.pyrocufflink.blue* has been migrated to Fedora CoreOS. As such,
it is no longer managed by Ansible; its configuration is done via
Butane/Ignition. It is no longer a member of the Active Directory
domain, but it does still run *collectd* and export Prometheus metrics.
*mtrcs0.pyrocufflink.red* is a Raspberry Pi CM4 on a Waveshare
CM4-IO-BASE-B carrier board with a NVMe SSD. It runs a custom OS built
using Buildroot, and is not a member of the *pyrocufflink.blue* AD
domain.
*mtrcs0.p.r* hosts Victoria Metrics/`vmagent`, `vmalert`, AlertManager,
and Grafana. I've created a unique group and playbook for it,
*metricspi*, to manage all these applications together.
Dustin