Can't inspect distillery release

Questions / Help
1

Hello, I’m using Distillery to deploy a Phoenix app, and can’t find a way to debug something that is obviously going wrong.
The release is created without any problem, it generates the binaries and I can open a console. Both start and foreground work without complaining, when I connect to localhost:8080 I get nothing. ping returns pong, I don’t see any crash log.
Only thing I did myself is writing a post hook that creates the DB before running the migrations

def create do
{:ok, _} = Application.ensure_all_started(:owl)

Owl.Repo.__adapter__.storage_up(Owl.Repo.config)

end

Is there a way I can inspect the binary? Logs somewhere, a -vvv option, a way to know the web server started?
Quite lost right now.

ngw

1 Like
2

Do you see the “Starting cowboy at port …” message when you start with foreground? If not you’re probably missing the server: true configuration for the endpoint:

# file: config/prod.exs
config :phoenix_distillery, PhoenixDistillery.Endpoint,
  http: [port: {:system, "PORT"}],
  url: [host: "localhost", port: {:system, "PORT"}], # This is critical for ensuring web-sockets properly authorize.
  cache_static_manifest: "priv/static/manifest.json",
  server: true,
  root: ".",
  version: Mix.Project.config[:version]

Let’s discuss each of these options.

  • server configures the endpoint to boot the Cowboy application http endpoint on start.
  • root configures the application root for serving static files
  • version ensures that the asset cache will be busted on versioned application upgrades (more on this later)

https://hexdocs.pm/distillery/phoenix-walkthrough.html#content

4 Likes
3

Thank you, I updated from exrm to distillery and couldn’t figure out why the application was starting but the webserver wasn’t responding, this was it.

4

You can check that with the following in the console.

Application.get_env(:phoenix_distillery, PhoenixDistillery.Endpoint)