SELinux Context for web server data files in another part of filesystem?

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Hi Everyone,

I need a little help in determining the proper SELinux context for
data files served by Nginx. SELinux is in enforcing mode. The web
server static pages are at /var/www/html (for historic reasons). The
data files are in the filesystem in /var, but at /var/ftc-data.
There's also a soft symlink at /var/www/html/ftc-data that points to
/var/ftc-data.

/var/www/html is working as expected, but I am getting a 403 on the
data files and the data file directory. I.e., I get a 403 on
http://www.example.com/ftc-data, even though the directory is ugo+x.

The filesystem topology of interest is:

            +------+
            | /var |
            +------+
           /        \
          /          \
         /            \
       www          ftc-data
       /             |+ file1.dat
      /              |+ file2.dat
     /               |+ file3.dat
   html
    |+ index.html
    |+ symlink to ftc-data

/var/www and /var/www/html have
system_u:object_r:httpd_sys_content_t:s0. The web server is serving
the static html files Ok.

/var/ftc-data has unconfined_u:object_r:var_t:s0. I am not thrilled
about unconfined_u, and I am pretty sure var_t should be
httpd_sys_content_t.

The last wrinkle is, the data files get updated once a day using a
systemd timer. So systemd needs write access to /var/ftc-data.

Would someone help me understand what SELinux context should be for
/var/ftc-data, please?

Thanks in advance.
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