Fly FLAME children seem to just timeout for no reason. about flame HOT 4 CLOSED

it seems like the POST request to fly is timing out (regardless of boot_timeout setting).

That's weird because I can see the flame machine starting up

from flame.

oh wait no! It's never getting the remote_terminator_pid message after making the post request!

from flame.

Yeah, i think what's going on is that the node names they start with on fly are not connectable.
for instance, how is a node supposed to connect to my-cool-app@918575d5f53078?

Shouldn't the latter part be some internal ip instead?

from flame.

Ah okay got it. There's some more configuration that needs to be done for fly than i initially thought.
I'm using a custom dockerfile, so fly never set up the clustering environment variables.
Here's the link to the fly docs for those in the future who have trouble

https://fly.io/docs/elixir/the-basics/clustering/

from flame.