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70 lines
3.4 KiB
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=================
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LDAP User Cleanup
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=================
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LDAP User Cleanup is a new feature in the ``LDAP user and group backend``
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application. LDAP User Cleanup is a background process that automatically
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searches the Nextcloud LDAP mappings table, and verifies if the LDAP users are
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still available. Any users that are not available are marked as ``deleted`` in
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the ``oc_preferences`` database table. Then you can run a command to display
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this table, displaying only the users marked as ``deleted``, and then you have
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the option of removing their data from your Nextcloud data directory.
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These items are removed upon cleanup:
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* Local Nextcloud group assignments
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* User preferences (DB table ``oc_preferences``)
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* User's Nextcloud home folder
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* User's corresponding entry in ``oc_storages``
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There are two prerequisites for LDAP User Cleanup to operate:
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1. Set ``ldapUserCleanupInterval`` in ``config.php`` to your desired check
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interval in minutes. The default is 51 minutes.
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2. All configured LDAP connections are enabled and operating correctly. As users
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can exist on multiple LDAP servers, you want to be sure that all of your
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LDAP servers are available so that a user on a temporarily disconnected LDAP
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server is not marked as ``deleted``.
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The background process examines 50 users at a time, and runs at the interval you
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configured with ``ldapUserCleanupInterval``. For example, if you have 200 LDAP
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users and your ``ldapUserCleanupInterval`` is 20 minutes, the process will
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examine the first 50 users, then 20 minutes later the next 50 users, and 20
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minutes later the next 50, and so on.
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There are two ``occ`` commands to use for examining a table of users marked as
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deleted, and then manually deleting them. The ``occ`` command is in your
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Nextcloud directory, for example ``/var/www/nextcloud/occ``, and it must be run as
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your HTTP user. To learn more about ``occ``, see
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:doc:`../configuration_server/occ_command`.
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These examples are for Ubuntu Linux:
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1. ``sudo -u www-data php occ ldap:show-remnants`` displays a table with all
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users that have been marked as deleted, and their LDAP data.
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2. ``sudo -u www-data php occ user:delete [user]`` removes the user's data from the
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Nextcloud data directory.
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This example shows what the table of users marked as ``deleted`` looks like::
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$ sudo -u www-data php occ ldap:show-remnants
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+-----------------+-----------------+------------------+--------------------------------------+
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| Nextcloud name | Display Name | LDAP UID | LDAP DN |
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+-----------------+-----------------+------------------+--------------------------------------+
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| aaliyah_brown | aaliyah brown | aaliyah_brown | uid=aaliyah_brown,ou=people,dc=com |
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| aaliyah_hammes | aaliyah hammes | aaliyah_hammes | uid=aaliyah_hammes,ou=people,dc=com |
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| aaliyah_johnston| aaliyah johnston| aaliyah_johnston | uid=aaliyah_johnston,ou=people,dc=com|
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| aaliyah_kunze | aaliyah kunze | aaliyah_kunze | uid=aaliyah_kunze,ou=people,dc=com |
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+-----------------+-----------------+------------------+--------------------------------------+
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Then you can run ``sudo -u www-data php occ user:delete aaliyah_brown`` to delete
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user aaliyah_brown. You must use the user's Nextcloud name.
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Deleting Local Nextcloud Users
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------------------------------
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You may also use ``occ user:delete [user]`` to remove a local Nextcloud user;
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this removes their user account and their data.
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