.. SPDX-FileCopyrightText: 2021-2026 Univention GmbH
..
.. SPDX-License-Identifier: AGPL-3.0-only

.. _glossary:

********
Glossary
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.. glossary::
   :sorted:

   Backup Directory Node
   UCS Backup Directory Node
      The Backup Directory Node is a system role in Nubus for UCS.
      For its description,
      see :ref:`domain-infrastructure-system-roles-backup-directory-node`.

      For more information about the role concept in Nubus for UCS,
      see :external+uv-architecture:ref:`concept-role`
      in :cite:t:`ucs-architecture`.

   Managed Node
   UCS Managed Node
      The Managed Node is a system role in Nubus for UCS.
      For its description,
      see :ref:`domain-infrastructure-system-roles-managed-node`.

      For more information about the role concept in Nubus for UCS,
      see :external+uv-architecture:ref:`concept-role`
      in :cite:t:`ucs-architecture`.

   Primary Directory Node
   UCS Primary Directory Node
      The Primary Directory Node is a system role in Nubus for UCS.
      For its description,
      see :ref:`domain-infrastructure-system-roles-primary-directory-node`.

      For more information about the role concept in Nubus for UCS,
      see :external+uv-architecture:ref:`concept-role`
      in :cite:t:`ucs-architecture`.

   Replica Directory Node
   UCS Replica Directory Node
      The Replica Directory Node is a system role in Nubus for UCS.
      For its description,
      see :ref:`domain-infrastructure-system-roles-replica-directory-node`.

      For more information about the role concept in Nubus for UCS,
      see :external+uv-architecture:ref:`concept-role`
      in :cite:t:`ucs-architecture`.

   Univention Configuration Registry variable
   UCR variable
      A Univention Configuration Registry (UCR) variable is a named setting
      that stores system configuration in a central registry.
      Instead of editing configuration files directly,
      you use UCR variables to manage local system configuration.
      When you change a UCR variable,
      the system automatically regenerates all configuration files that depend on it.

      For more information about UCR variables,
      see :ref:`computers-administration-of-local-system-configuration-with-univention-configuration-registry`
      in the *Univention Configuration Registry* section.

   Univention Directory Manager
   UDM
      Univention Directory Manager (UDM) is the abstraction layer
      between the domain database and the administrator.
      It's responsible for domain management in Nubus for UCS,
      covering identities, devices, and services across the domain.

      UDM provides data aggregation, data consistency, input validation,
      and process logic on top of the LDAP directory.
      Administrators can use UDM through the web interface in the *Management UI*,
      the command line (:command:`univention-directory-manager` or :command:`udm`),
      or the HTTP REST API.

      .. TODO: Replace the reference after UDM conctent is available. See univention/dev/ucs#2592.

      For more information,
      see :ref:`component-domain-management`
      in :cite:t:`ucs-architecture`.