I am in the process of trying to set up a new Plex Media Server with an Ubuntu LTS Server. My own user can open the directories from the array being shared to the server to see the contents, play them, etc. But Plex is failing to read/scan the directories to build the database of content.
Given how I had to work to get the permissions of this share working for my own user, I’m pretty sure I need to know the UID Plex is using, so that I can modify the mount command appropriately so that Plex will be able to read the contents like I can currently.
You won’t need worry about that when done how Linux likes it.
It’s all in setting the permission flags.
Your primary focus here will likely be 755 for directories and 644 for files.
This will give you (the owner) full Read/write/delete
and give Plex permission to read (but not modify)