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93 lines
4.1 KiB
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93 lines
4.1 KiB
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========
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SMB/CIFS
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========
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Nextcloud can connect to Windows file servers or other SMB-compatible servers
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with the SMB/CIFS backend.
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.. note:: The SMB/CIFS backend requires ``smbclient`` or
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the PHP smbclient module to be installed on the Nextcloud server. The PHP
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smbclient module is preferred, but either will work. These
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should be included in any Linux distribution. (See `PECL smbclient
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<https://pecl.php.net/package/smbclient>`_ if your distro does not include
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them.)
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You need the following information:
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* Folder name for your local mountpoint.
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* Host: The URL of the Samba server.
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* Username: The username or ``domain\username`` (see below) used to login to the Samba
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server.
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* Password: the password to login to the Samba server.
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* Share: The share on the Samba server to mount.
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* Remote Subfolder: The remote subfolder inside the Samba share to mount
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(optional, defaults to /). To assign the Nextcloud logon username
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automatically to the subfolder, use ``$user`` instead of a particular
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subfolder name.
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* And finally, the Nextcloud users and groups who get access to the share.
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Optionally, you can specify a ``Domain``. This is useful in
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cases where the
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SMB server requires a domain and a username, and an advanced authentication
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mechanism like session credentials is used so that the username cannot be
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modified. This is concatenated with the username, so the backend gets
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``domain\username``
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.. note:: For improved reliability and performance, we recommended installing
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``libsmbclient-php``, a native PHP module for connecting to
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SMB servers.
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.. figure:: images/smb.png
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:alt: Samba external storage configuration.
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:scale: 75%
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See :doc:`../external_storage_configuration_gui` for additional mount
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options and information.
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See :doc:`auth_mechanisms` for more information on authentication schemes.
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SMB update notifications
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------------------------
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Nextcloud can use smb update notifications to
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listen for changes made to a configured SMB/CIFS storage and detect external
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changes made to the storage in near real-time.
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.. note:: Due to limitations of linux based SMB servers, this feature only works
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reliably on Windows SMB servers.
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.. note:: Using update notifications requires ``smbclient`` 4.x or newer.
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Due to limitations with the smbclient PHP module, the ``smbclient`` binary
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is required even when using the PHP module.
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To start listening to update notifications, start the ``occ`` command like this::
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occ files_external:notify <mount_id>
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You can find the mount id for a specific storage using ``occ files_external:list``
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On default this command shows no output, can you see the list of detected changes by
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passing the ``-v`` option to the command.
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SMB authentication
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^^^^^^^^^^^^^^^^^^
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Update notifications are not supported when using 'Login credentials, save in session' authentication.
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Using update notifications is only supported with 'Login credentials, save in database'.
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Even when using 'Login credentials, save in database' or 'User entered, stored in database' authentication the notify process
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can not use the credentials saved to attach to the smb shares because the notify process does not run in the context of a specific user
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in those cases you can provide the username and password using the ``--username`` and ``--password`` arguments.
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Decrease sync delay
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^^^^^^^^^^^^^^^^^^^
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Any updates detected by the notify command will only be synced to the client after the Nextcloud cron job has been executed
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(usually every 15 minutes). If this interval is too high for your use case, you can decrease it by running ``occ files:scan --unscanned --all``
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at the desired interval. Note that this might increase the server load and you'll need to ensure that there is no overlap between runs.
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Hidden files upload failure or not shown
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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If you have the configuration ``hide dot files = Yes``, you will not be able to upload a hidden file (dot file) nor will you be able to show hidden files on your filelist (even if the 'show hidden file' option is checked on the nextcloud settings.
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Make sure you have the following option in your configuration: ``hide dot files = No``
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