Cannot set maximum_throughput_units when auto_inflate_enabled is false

[KenticoMartinS]

Hi,
we are running Terraform with Azure provider module:

Terraform v0.11.8
+ provider.azurerm v1.16.0

We have a general module containing Event Hub Namespace resource

resource "azurerm_eventhub_namespace" "default" {
  name                     = "${var.event_hub_namespace_name}"
  location                 = "${var.location}"
  resource_group_name      = "${var.resource_group_name}"
  auto_inflate_enabled     = "${var.autoscaling["enabled"]}"
  maximum_throughput_units = "${var.autoscaling["max_units"]}"

  sku      = "${var.sku}"
  capacity = "${var.capacity}"
}

From the module, we are trying to set auto_inflate_enabled and maximum_throughput_units parameters. The maximum_throughput_units parameter is dependent on auto_inflate_enabled parameters. It means, we can set maximum_throughput_units only when auto_inflate_enabled is enabled.

Is it possible to use one azurerm_eventhub_namespace resource for the following two scenarios?

1. auto_inflate_enabled is disabled and we don't care about maximum_throughput_units
2. auto_inflate_enabled is enabled and maximum_throughput_units is set to e.g. 20

We tried the following solutions:

1. By default set auto_inflate_enabled to false and maximum_throughput_units to 0. Following error occured: Error: module.event_hub.azurerm_eventhub_namespace.default: expected maximum_throughput_units to be in the range (1 - 20), got 0
2. By default set auto_inflate_enabled to false and maximum_throughput_units to 1. Following error occured: eventhub.NamespacesClient#CreateOrUpdate: Failure sending request: StatusCode=0 -- Original Error: autorest/azure: Service returned an error. Status=400 Code="BadRequest" Message="Cannot set MaximumThroughputUnits property if AutoInflate is not enabled.

[katbyte]

Hi @KenticoMartinS,

Sorry to hear your having this issue. Upon investigation it does seem 0 is a valid value for maximum_throughput_units, thus i've opened #2124 that should solve this for you 🙂

[KenticoMartinS]

Hi @katbyte,
thank you very much for looking into the issue. We are looking forward to the fix because currently, it is blocking us from creating a general module containing the Event Hub resource.

[tombuildsstuff]

hi @KenticoMartinS

Just to let you know that this has been released as a part of v1.18 of the AzureRM Provider (the full changelog is available here). You can upgrade to this by specifying the version in the provider block (as shown below) and then running terraform init -upgrade

provider "azurerm" {
  version = "=1.18.0"
}

Thanks!

[ghost]

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