Question

I’m getting this error when trying to start my play app on Heroku:

heroku[web.1]: Error R11 (Bad bind) -> Process bound to port 8000, should be 46275 (see environment variable PORT)

I think this is play trying to listen on the jpda port, which Heroku prohibits. My Procfile looks like this:

web:    play run --http.port=$PORT $PLAY_OPTS

My PLAY_OPTS in heroku config looks like this:

PLAY_OPTS           => --%prod -Dprecompiled=true

In my application.conf, mode is set like this:

application.mode=dev

What do I need to do to get this to deploy? Do I need to somehow disable the jpda port, or set the mode to something else?

Answer 1

In your application.conf file you need a line to define prod mode

%prod.application.mode=prod

Try locally to run play run –%prod to be sure in this mode you don’t open a jpda port.