This is what I attempted by using *.mytailnet.ts.net, but that did not work. How would I enter this in my export file?

Beyond 3 devices, Tailscale costs money

I think you mean beyond 3 users. You are allowed up to 100 devices in the free tier.

So I’m having some permission issues with this. If I create a file within one container, it is read only when accessed from another. Any suggestions on how to fix this?

Wow thanks for that detailed explanation! Very helpful and I’ll be setting up an rpi as a device.

This only applies to high availability clusters, correct?

Got it so I’m just overthinking this. I setup an NFS share through the host via the command line and then I’ll be able to share that to anything on the network.

I did some searching trying to figure out how I can share the NFS directly from Proxmox and came up short. Any tutorials or other links you know of?