Hi! Does anyone have any recommendation on how to debug my application seemingly completely randomly shutting down? The only diagnostic information I seem to get is that it logs [notice] Application my_app exited: shutdown AFAIK there’s nothing else weird going on with the app. This is my dev m…

You haven’t given us any information so I’d offer you to start disabling the supervised parts of your app one by one and trying to reproduce the problem until you pinpoint the guilty party.

You haven’t given us any information This is all the information I have! That’s my point lol. I’m hoping to learn how to get more information. It’s a pretty basic phoenix app. I can’t disable much from the supervision tree without making the app useless which isn’t really acceptable at the mo…

TBF I am really not the right guy to help you here, just gave you one shot in the dark – I don’t do Phoenix for a while now. I’d try enabling logging as much as possible indeed but otherwise no, parts of the apps falling down shouldn’t normally spam the stdout so yeah it can be a bit invisible. Ho…

Just following up here, I finally caught it. I enabled SASL logging and caught the supervisor’s crash message. It’s not super relevant to the original question but in case anyone else stumbles upon this, the error I’m getting is: [error] Child Plug.Cowboy.Drainer of Supervisor MyAppWeb.Endpoint s…

Cool! And did you find out why was it failing?

Not yet but I opened an issue :slight_smile:

Thanks for this, helped me debugging a similar issue :blush:

Hi all, for anyone else running into this. Make sure your ENV values are loaded before starting your server. I was experiencing the “Application ABC exited: shutdown”, loading my env resolved the process that was getting killed.

Elixir Programming Language Forum

How to debug `Application my_app exited: shutdown` randomly?

Questions & Help Questions

dantswain February 22, 2023, 3:43pm 7

Not yet but I opened an issue