Terraform Public URL for Service Not Correctly Linked to Domain

[Neil_Skilling]

I am having a problem deploying an app using a custom domain. I am using Terraform to deploy the app and all of the pieces deploy correctly apart from the setting of the Public URL for the front end reverse proxy.

The container deploys correctly and passes health checks but the external mapping to the Public URL shows on the service detail screen as my-custom-domain.comundefined and of course the service is not then externally available. I don’t know where that undefined string is coming from.

The domain is shown as active (I have a wildcard entry on the DNS so I am not updating the DNS records with Terraform) and attached to the correct Koyeb app.

However if I got to the service / Settings / Exposed Ports and untick and then re-tick the Public option then the Public URL fixes itself.

Is this just a timing issue? I have waited for 10 minutes and nothing changed until I flipped that public slider on an off.

The relevant sections of the terraform:

resource "koyeb_domain" "my-domain" {
  name           = "app-${var.stage}.my-custom-domain.com"
  app_name       = koyeb_app.bna-app.name

  depends_on = [
    koyeb_app.bna-app
  ]
}

resource "koyeb_service" "reverseproxy-service" {
  app_name = koyeb_app.bna-app.name
  definition {
    name = "reverse-proxy"
    ports {
      port     = 80
      protocol = "http"
    }
....

Any suggestions appreciated.

[Lukasz_Oles]

Hello @Neil_Skilling, I see that you deleted the app. Could you share the whole terraform configuration?

[Neil_Skilling]

I have now had a chance to make a minimal example that demonstrates this issue. The following config starts the service correctly but does not link it with the domain. It remains showing the URL as “echo.demo.internal:80” - but if I turn the public setting off/on and then save the settings it correctly links with the domain.

I have changed the domain name in the below - other than that no changes.

terraform {
  required_providers {
    koyeb = {
      source  = "koyeb/koyeb"
      version = "0.1.11"
    }
  }
}

resource "koyeb_app" "app" {
  name = "demo"
}

resource "koyeb_domain" "my-domain" {
  name           = "demo.my-domain.com"
  app_name       = koyeb_app.app.name
}

resource "koyeb_service" "echo" {
  app_name = koyeb_app.app.name
  definition {
    name = "echo"
    instance_types {
      type = "micro"
    }
    ports {
      port     = 80
      protocol = "http"
    }
    scalings {
      min = 1
      max = 1
    }
    regions = ["fra"]
    docker {
      image = "ealen/echo-server"
    }
  }

  depends_on = [
    koyeb_domain.my-domain
  ]
}

[David]

You probably need to add a route for your port. Otherwise it not expose publicly:

routes {
  path = "/"
  port = 80
}

Replace / with the route you wish to expose.

[Neil_Skilling]

Thanks David that was the issue. I should have noticed that in the example Terraform code.