Host is a node that runs:
- catalog database
- iot-node-manager
- iot-api
Each host can contain multiple instance databases and host-bound services.
Catalog database mirrors host state and supports reverse synchronization from services back to DBM.
- Required on each host that should run instances.
- Has versioned schema and migration path.
¶ Tablespaces and instances
- A host typically has one tablespace, but multiple can be configured.
- Instance creation targets a concrete host and tablespace.
- Instance, DB role, and service are host-local entities (not transferable to another host).
- Manage host metadata, tablespaces, and catalog state.
- Manage host-level permissions.
- Create/manage instances, DB roles, and services according to rights.
See permission breakdown in Admin permissions.