**Language / Язык:** [English](cluster-extras.md) | [Русский](../ru/domains/cluster-extras.md)

# Cluster extras

Additional cluster-scoped domains with durable handlers:

- **Notifications** — endpoints and targets configuration state
- **ACME** — account/plugin/certificate simulation (no real CA enrollment)
- **Mapping** — PCI / USB / resource mappings
- **Metrics servers** — PVE metrics-server configuration/export simulation
- **Custom CPU models** and bulk guest actions as declared

Browse the Web UI catalog for the exact paths on your active major.
