I just published 1.0.3, which fix a long standing bug that was masking it impossible to run multiple traces.

This should now be handled properly. This took a long time to fix, but it should be totally gone now (famous last words).

So please upgrade if you use Orion.

Thanks to @larshei for reporting

I listened to the ThinkingElixir podcast episode on this, and re. the discussion about adding it to LiveDashboard, this works to simply add a link to Orion in the dashboard nav:

defmodule MyApp.Web.OrionLink do
  @moduledoc false
  use Phoenix.LiveDashboard.PageBuilder

  @impl true
  def menu_link(_, _) do
    {:ok, "Orion tracing"}
  end
end

And in the router:

live_orion("/admin/system/orion")

live_dashboard("/admin/system",
        additional_pages: [
          orion: MyApp.Web.OrionLink,
          ...