I’m trying to run Livebook locally on MacOSX. It was working on Friday and I’d guess the most likely cause of failure is some setting the corporate folks have changed. What I want to find out is if there’s any way I can gather more information on the failure.

I get a -1 when I attempt to start it. The following is in the log file:

[LivebookLauncher] release pid: 51007

ERROR!!! [Livebook] Your hostname “xxxxxxx” does not resolve to a loopback address (127.0.0.0/8),
which indicates something wrong in your OS configuration, or EPMD is not running.

Make sure your computer’s name resolves locally or start Livebook using a long distribution name. Please try one of the fixes below:

• If you are using the Livebook App, please open up a bug report.

• If you are using Livebook’s CLI, consider using longnames:

  livebook server --name livebook@127.0.0.1
  

• If you are running it from source, do instead:

  MIX_ENV=prod elixir --name livebook@127.0.0.1 -S mix phx.server
  

[os_mon] memory supervisor port (memsup): Erlang has closed
[os_mon] cpu supervisor port (cpu_sup): Erlang has closed

I removed my actual host name from the log (if you’re wondering why my hostname is “xxxxx”).

I tried manually starting EPMD. No error but it didn’t fix the issue either.

I’ve tried uninstalling and reinstalling Livebook and that doesn’t do it. I’ve done a bit of digging and in my case the host name does not resolve to 127.0.0.1 (which strikes me as kind of odd). This is why I think it’s some sort of corporation setting. I mean if I ping hostname it doesn’t show me 127.0.0.1

Anyone have a notion of what I should be looking at to gather more detail on this problem?