Connecting pihole and tailscale apps

[boebeng]

Hi all,

I am new to fly.io and have been experimenting with pihole container and tailscale container. I’ve followed this topic but unsuccessful because the tailscale need systemd to start and I can’t run systemd inside a container.

So I made a different approach by making an app for each image and at the moment both apps are running. Now I would like to avoid the pihole apps to become an open resolver by using the tailscale app to connect to it.

What will be the best way to connect those 2 apps?

As I checked, both apps are connected to the fly’s 6PN network but I couldn’t find any document that describes the interface name of the 6PN network. I intend to use that interface name as the interface the pihole should listen to, by this way, the pihole will be only accessible through tailscale.

Cheers!

[arun]

I am not familiar with fly’s 6PN concept yet, but here’s how I got Tailscale working on a fly app:

Configure pihole to listen only on Tailscale network

I had to use legacy iptables and then run ./tailscaled under usr/sbin folder. From there, I could run sudo tailscale up. Stopping ./tailscaled stops Tailscale, so as a workaround for now, I just close the tab where ./tailscaled is running. I am pretty sure that’s not how I must be doing it, but it works for now.

[boebeng]

I was hoping that fly.io has something like a docker0 network to use with their 6PN network. Anyway your workaround works for me, big thanks!