Error when using cluster_id output in other modules/actions

[fubar]

I have issues

using the cluster_id output in other modules/actions

I'm submitting a...

• bug report
• feature request
• support request
• kudos, thank you, warm fuzzy

What is the current behavior?

Consider this test.sh bash script:

#!/bin/bash
echo "{\"kubeconfig\":\"${1}\"}"

And these Terraform definitions:

locals {
  eks_cluster_name = "foo-cluster"
}

module "foo-cluster" {
  cluster_name = "${local.eks_cluster_name}"
  // ...
}

data "external" "kube_config_test" {
  program = [
    "test.sh",
    "${module.foo-cluster.cluster_id}"
  ]
}

This results in this error:

Resource 'data.external.kube_config_test' does not have attribute 'result.kubeconfig' for variable 'data.external.kube_config_test.result.kubeconfig'

However, if I reference the local variable, it works fine:

data "external" "kube_config_test" {
  program = [
    "test.sh",
    "${local.eks_cluster_name}"
  ]
}

The script works fine; I've validated its output and it returns the expected string {"kubeconfig":"foo-cluster"} in both scenarios, but for some reason Terraform throws an error when using module.foo-cluster.cluster_id.

What's failing here?

Environment details

Mac OS 10.13

Terraform and module versions:

* provider.aws: version = "~> 1.57"
* provider.external: version = "~> 1.0"
* provider.kubernetes: version = "~> 1.5"
* provider.local: version = "~> 1.1"
* provider.null: version = "~> 2.0"
* provider.random: version = "~> 2.0"
* provider.template: version = "~> 2.0"

[fubar]

Another example of this issue:

provider "kubernetes" {
  config_path = "${path.cwd}/kubeconfig_${module.foo-cluster.cluster_id}"
}

Throws:

module.foo.provider.kubernetes: Failed to load config (; default context): invalid configuration: no configuration has been provided

However, this works fine:

provider "kubernetes" {
  config_path = "${path.cwd}/kubeconfig_${local.eks_cluster_name}"
}

[skang0601]

I don't think the issue is with this module itself but rather the provider or terraform. This issue seems relevant: hashicorp/terraform-provider-kubernetes#142

[max-rocket-internet]

Closing after no update in a long time. Feel free to reopen 🙂

[github-actions]

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