Terraform-provider-google: terraform 0.12.x Inappropriate value for attribute "nat_ips" in google_compute_router_nat

[scippio]

terraform -v
Terraform v0.12.3

• provider.google v2.10.0

Error: Incorrect attribute value type

  on gke-cluster.tf line 107, in resource "google_compute_router_nat" "egress_nat_production":
 107:   nat_ips                            = ["${google_compute_address.egress_production.*.self_link}"]

Inappropriate value for attribute "nat_ips": element 0: string required.

[tysen]

Hi @scippio - can you try nat_ips = "$google_compute_address.egress_production[*].self_link"?

[TheMagoo73]

Thanks @tysen - that's resolved the same issue I'd just run into, perfect timing! Hopefully it will resolve @scippio too.

[FakeBuddy]

This parameter should be fixed in documentation https://www.terraform.io/docs/providers/google/r/compute_router_nat.html

[tysen]

Docs fixed in https://github.com/GoogleCloudPlatform/magic-modules/pull/2056

[dpkirchner]

The error occurs, for me, when using the lines in the updated documentation. The easiest way to reproduce this is by copying the production-like configuration as-is (at the above-referenced documentation URL). This is with terraform v0.12.6 and provider.google v2.12.0:

Error: Incorrect attribute value type

  on network-us-west2.tf line 32, in resource "google_compute_router_nat" "advanced-nat":
  32:   nat_ips                            = ["${google_compute_address.address[*].self_link}"]

Inappropriate value for attribute "nat_ips": element 0: string required.

Replacing line 32 with the string:

nat_ips = google_compute_address.address[*].self_link

works fine.

[tysen]

Thanks @dpkirchner - fixed in https://github.com/GoogleCloudPlatform/magic-modules/pull/2125

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