fatal error: concurrent map read and map write (succeeded on retrying apply)

[joobisb]

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Terraform Version

1.7.4

AzureRM Provider Version

3.103.1

Affected Resource(s)/Data Source(s)

azurerm_ key_vault

Terraform Configuration Files

module "service" {
  source   = "./modules/azure-key-vault"
  location = var.azure_location
  name     = "service-1"

  resource_group_name = var.resource_group_name
  principal_id        = var.vault_access_principal
  namespace           = var.namespace
}

We have multiple modules like above which creates an AKV vault and also the secrets associated with it.

terraform {
  required_providers {
    azurerm = {
      source = "hashicorp/azurerm"
    }
  }
}

data "azurerm_client_config" "current" {}

data "azurerm_subscription" "primary" {}

resource "azurerm_key_vault" "vault" {
  name                        = "${substr(var.name, 0, 17)}-${var.environment}"
  location                    = var.location
  resource_group_name         = var.resource_group_name
  enabled_for_disk_encryption = true
  tenant_id                   = data.azurerm_client_config.current.tenant_id
  soft_delete_retention_days  = 7
  purge_protection_enabled    = false

  sku_name = "standard"

  enable_rbac_authorization = true

  tags = {
    service   = var.name
    namespace = var.namespace
  }
}

resource "azurerm_role_assignment" "reader" {
  scope                = azurerm_key_vault.vault.id
  role_definition_name = "Key Vault Reader"
  principal_id         = var.principal_id
}

resource "azurerm_role_assignment" "user" {
  scope                = azurerm_key_vault.vault.id
  role_definition_name = "Key Vault Secrets User"
  principal_id         = var.principal_id
}

resource "azurerm_role_assignment" "admins" {
  scope                = azurerm_key_vault.vault.id
  role_definition_name = "Admin"
  principal_id         =  <principal_id>
}

resource "azurerm_role_assignment" "service_reader" {
  scope                = azurerm_key_vault.vault.id
  role_definition_name = "Service User"
  principal_id         = <principal_id>

output "vault_name" {
  value = azurerm_key_vault.vault.name
}

### Debug Output/Panic Output

```shell
https://gist.github.com/joobisb/5cda4cee3336cc2ed21ba3c5ef145ed1

Expected Behaviour

No response

Actual Behaviour

I was running terraform apply and the process suddenly crashed with the given stack trace. Though I was able to complete the run on retry, thought of reporting this!

Steps to Reproduce

No response

Important Factoids

No response

References

No response

[wuxu92]

Hi @joobisb,

Thank you for reporting this. It's a known issue and is on my list to fix. I may submit a PR to address this in later versions. (Apologies for linking the wrong PR to this issue.)