Configuring site I just added a certificate and custom domain to?

[Chris_Gregori]

I just added a cert to my liveview site deployed on fly.io and an external domain (using google domains) and I’ve got two issues:

• The RSA certificate has been given but ECDSA hasn’t - do I just need to wait? RSA took about 20 minutes.

The flyctl command to show the certs for my domain look fine

• My Elixir app is complaining in the logs that Could not check origin for Phoenix.Socket transport. and that I should edit the host in prod.exs - what do I provide it? Is there a system variable to get provided by Fly? Do I give it my custom domain or the origin domain it had before?

As a result my LiveView site is constantly refreshing when trying to access it on the custom domain but origin works fine.

Update:

I’ve changed my prod config to after finding some posts here:

(The custom domain is 6words.xyz) but now it redirects me to the fly.dev url whenever I try and access the custom domain?

[FrequentFlyer]

Hey Chris,

Can you see if updating your prod.exs and runtime.exs like this helps:

@kurt

Our config looks like this, prod.exs :

config :fly, FlyWeb.Endpoint,
  url: [host: "example.com", port: 80],
  cache_static_manifest: "priv/static/cache_manifest.json",
  force_ssl: [
    host: nil,
    rewrite_on: [:x_forwarded_port, :x_forwarded_proto],
    hsts: false, # maybe true when we use this for real
  ]

And in runtime.exs :

  config :fly, FlyWeb.Endpoint,
    server: true,
    url: [host: "fly.io"],

This seems to work fine! I don’t know if it’s the best possible way to do it, but it did require us putting a single url.host value in the endpoint config.