terraform-provider-kubernetes

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Terraform Version, Provider Version and Kubernetes Version

Terraform version: v0.14.5
Kubernetes provider version: v2.0.3
Kubernetes version: GitVersion:"v1.20.2"

Affected Resource(s)

• kubernetes_secret

Terraform Configuration Files

terraform {
  required_providers {
    kubernetes = {
      source  = "hashicorp/kubernetes"
      version = "~> 2.0.3"
    }
  }
  required_version = ">= 0.14"
}

provider "kubernetes" {
  alias          = "dev"
  config_path    = "~/.kube/config"
  config_context = "kind-kind1"
}

resource "kubernetes_secret" "gitlab-token-dev" {
  provider = kubernetes.dev
  metadata {
    namespace     = "kube-system"
    generate_name = "gitlab-token-"
    annotations = {
      "kubernetes.io/service-account.name" = "gitlab"
    }
  }
  type = "kubernetes.io/service-account-token"
}

resource "local_file" "foo" {
  content  = "resource: ${kubernetes_secret.gitlab-token-dev.data}"
  filename = "${path.module}/tmp.txt"
  depends_on = [
    kubernetes_secret.gitlab-token-dev
  ]
}

Debug Output

https://gist.github.com/astorath/0511a583ce91f95fff58e676c16bae6e

Steps to Reproduce

1. kubectl create serviceaccount gitlab 2.terraform plan

Expected Behavior

secret's kubernetes_secret data is read from cluster after creation

Actual Behavior

secret's kubernetes_secret data is treated as null as per resource manifest

Important Factoids

References

• GH-1234

Community Note

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This looks like it might be a duplicate of https://github.com/hashicorp/terraform-provider-kubernetes/issues/1168

@astorath Have you found any workaround? We want to read the secret token and use it to manage a corresponding azuredevops_serviceendpoint_kubernetes resource that uses the "ServiceAccount" authorization_type but can't because the secret data is always empty.

Here's what we ended up doing:

Terraform:

data "external" "kubernetes_secret_env_systems" {
  for_each    = kubernetes_service_account.env_systems
  program     = ["Powershell.exe", "& ./Get-KubernetesSecretData.ps1"]
  working_dir = path.module
  query = {
    kubeConfigContext = var.cluster_name
    namespace         = each.value.metadata.0.namespace
    secretName        = each.value.default_secret_name
    jsonPath          = "{.data}"
  }
}

# Example usage
# data.external.kubernetes_secret_env_systems[each.key].result.token

File: Get-KubernetesSecretData.ps1

$ErrorActionPreference = "Stop"

# Read stdin as string
$jsonPayload = [Console]::In.ReadLine()

$json = ConvertFrom-Json $jsonPayload

if (-not $json) {
    Write-Error "Unable to parse JSON input."
}
if ([string]::IsNullOrEmpty($json.kubeConfigContext)) {
    Write-Error "Required property 'kubeConfigContext' not provided in JSON input."
}
if ([string]::IsNullOrEmpty($json.namespace)) {
    Write-Error "Required property 'namespace' not provided in JSON input."
}
if ([string]::IsNullOrEmpty($json.secretName)) {
    Write-Error "Required property 'secretName' not provided in JSON input."
}

if (-not [string]::IsNullOrEmpty($json.kubeConfigPath)) {
    $Env:KUBECONFIG = $json.kubeConfigPath
}

$null = kubectl config use-context ($json.kubeConfigContext)

$dataJsonPath = "{@}"
if ($json.jsonPath) {
    $dataJsonPath = $json.jsonPath
}

$ns = $json.namespace
$name = $json.secretName
$secretData = kubectl get secret $name -o jsonpath=$dataJsonPath --namespace=$ns

Write-Output $secretData

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Still relevant. With https://github.com/hashicorp/terraform-provider-kubernetes/pull/1792 it isn't clear how to create token for ServiceAccount using provider's resources.

Hi @astorath,

This issue has been addressed, with the latest version of the provider your initial code works.

@z0rc, please refer to the provider documentation here.

I will go ahead and close this issue.

Thank you.