Kurt wore me down, and you should now be able to use _local_ip.internal to get your local IP address, in addition to /etc/hosts or ip a or whatever.

This simplifies things sooo much. Thank you @thomas and @kurt :blue_heart:

I FIND THIS BAFFLING BUT OK. :slight_smile:

I don’t really understand how you fetch the IP address? Let’s take an example, I’ve myapp as an application name. So for fetching the local IP I’ve to do a DNS lookup on _local_ip.myapp.internal? I tried but it didn’t work.

I found the correct DNS server, it’s fdaa::3. Previous message: ▶ Summary

Yeah, it looked like before you were trying to do the lookup over a WireGuard gateway, to the DNS server we give WireGuard connections. _local_ip only gives the addresses for Fly app instances. It is a weird special name, and I added it begrudgingly. :slight_smile: Let me say this right now: we do …

[image] pims: _local_ip.internal thankfully I found this post, I was previously using Alpine for my Elixir application, but switched to Debian, however /etc/hosts is mounted as 700 by fly.io so grepping that to get my local ip no longer worked (as it was grepping it as nobody), luckily I was …

Sounds like it can / should be 744, will discuss with the team why it’s this way.

@flyio3 It looks like it’s created with 644 as its permissions. Should be readable by every user, only writable by root. Does your image change these permissions at some point? We leave the permissions as-is. Possibly if there was no /etc/hosts, it might create the file with stricter permissions. …

Fly.io

Quick DNS note

Phoenix

thomas February 9, 2021, 11:56pm 3

I FIND THIS BAFFLING BUT OK.

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