azurerm_mongo_cluster resource does not accept random_password value.

[mlognseth-3as]

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Terraform Version

1.9.8

AzureRM Provider Version

v4.13.0

Affected Resource(s)/Data Source(s)

azurerm_mongo_cluster

Terraform Configuration Files

resource "azurerm_resource_group" "main" {
  name     = "cosmosdb-rg"
  location = "West Europe"
}

resource "random_password" "mongo_admin" {
  override_special = "!$#%"
  length           = 24
  special          = true
  numeric          = true
  upper            = true
  lower            = true
}

resource "azurerm_mongo_cluster" "mongo_cluster" {
  name                   = "cosmosdb-sdm-${var.environment}"
  resource_group_name    = azurerm_resource_group.main.name
  location               = azurerm_resource_group.main.location
  administrator_username = "admin"
  administrator_password = random_password.mongo_admin.result
  shard_count            = 1
  compute_tier           = "M25"
  high_availability_mode = var.high_availability_mode
  storage_size_in_gb     = 32
  version                = "7.0"
}

Debug Output/Panic Output

https://gist.github.com/lgnsth/aaf6a97cd99b4885fe3ca6d16a3202aa

Expected Behaviour

Cluster should be created using the result of random_password as the administrator_password

Actual Behaviour

Create or update fails with:
│ Error: administrator_password is required when create_mode is Default
│
│ with azurerm_mongo_cluster.mongo_cluster,
│ on mongodb.tf line 10, in resource "azurerm_mongo_cluster" "mongo_cluster":
│ 10: resource "azurerm_mongo_cluster" "mongo_cluster" {
│

Using a literal string like administrator_password = "hunter2" works fine.
I have attempted several different variants (storing the secret in a KV first and referencing it from there, storing the password result in a local and referencing it, but neither yields different results.)

Steps to Reproduce

Run the provided code using terraform apply

Important Factoids

No

References

No response

[rcskosir]

Thank you for taking the time to open this issue. Please subscribe to PR #28215 created by @neil-yechenwei for this issue.