Regression: can't set up a www -> no-www redirect now, used to work in 3.25.0

[hallvors]

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Terraform Version

Terraform v0.12.27

• provider.google v3.27.0

Affected Resource(s)

• google_compute_url_map

Terraform Configuration Files

This is an extract from a larger file:

resource "google_compute_url_map" "default" {
  name        = "test-staging-loadbalancer-urlmap"
  description = "test load balancer (URL map). Managed by Terraform."

  project         = test
  default_service = google_compute_backend_service.public.self_link

  host_rule {
    hosts        = [var.domain_admin]
    path_matcher = "admin"
  }

  path_matcher {
    name            = "admin"
    default_service = google_compute_backend_service.admin.self_link
  }

  host_rule {
    description  = "remove www. prefixes"
    hosts        = ["www.${var.domain_public}"]
    path_matcher = "public-nowww"
  }

  path_matcher {
    name = "public-nowww"
    default_url_redirect {
      host_redirect = var.domain_public
      strip_query   = false
    }
  }
}

Expected Behavior

www.* to no-www redirect, like one is still allowed to configure manually in the console.

Actual Behavior

Running this in 3.25.0 works fine, running it with 3.27.0 causes an error:
Error: "path_matcher.1.default_url_redirect": conflicts with default_service

I think this may be a regression caused by #6547

Also, I'm not the only person who ran into this problem: https://stackoverflow.com/questions/62469495/how-to-add-host-redirect-from-secondary-to-primary-domain-using-terraform-and-go

I understand this change my be on purpose and perhaps the config should have different URL maps set up instead of adding these rules to a single URL map. If so, documentation for a breaking change on how to fix it would be appreciated.

References

• add default_route_action to compute_url_map #6547

[edwardmedia]

I do see behavior changes

[c2thorn]

@hallvors thanks for pointing this out! It was unintended behavior, and should be resolved in the next patch.

[ghost]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.

If you feel this issue should be reopened, we encourage creating a new issue linking back to this one for added context. If you feel I made an error 🤖 🙉 , please reach out to my human friends 👉 hashibot-feedback@hashicorp.com. Thanks!