Error: Your data directory is readable by other users

🚧 Installation
1

I have Nextcloud as a container in docker, with /data folder bound to
/media/filip/HDD/nextcloud_data/data
Docker is on Raspberry Pi 4B, Raspberry Pi OS, Debian 11.
HDD is an external Hard Drive, NTFS (in an Amazon basics drive SATA enclosure, if it matters).
In /etc/fstab it is mounted as: /dev/sda2 /media/filip/HDD ntfs defaults 0 0

I have done
sudo chown -R www-data:www-data /media/filip/HDD/nextcloud_data/data
sudo chmod 0770 /media/filip/HDD/nextcloud_data/data
and even (at GPT’s request :sweat_smile:)
sudo setfacl -R -m u:www-data:rwx,d:u:www-data:rwx /media/filip/HDD/nextcloud_data/data

But whatever I do it still remains:

# file: media/filip/HDD/nextcloud_data/data
# owner: root
# group: root
user::rwx
group::rwx
other::rwx

I’m new to Linux. Am I mounting the HDD wrong? Why can I not edit permissions or owner?

Thank you for your help,
Filip

2

I gave up and just added the
'check_data_directory_permissions' => false,
line in config.php .
Works ok now. Does that pose future problems or security risks?

3

I’m using the following access rights for the data directory:

find /nextcloud_data_path/ -type f -print0 | xargs -0 chmod 0640
find /nextcloud_data_path/ -type d -print0 | xargs -0 chmod 0750
4

just turn it off https://www.reddit.com/r/NextCloud/comments/piewqw/need_some_help_please_change_the_permissions_to/