Terraform-provider-azurerm: Can't Deploy a linux consumption plan

[ecnerual]

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Description

I can't create a linux consumption service plan for an azure Function.
This code was deployed and succeded on october 17th but was not working today (october 18th).

Terraform (and AzureRM Provider) Version

Terraform 0.12.9
provider.azurerm v1.35.0

Affected Resource(s)

• azurerm_app_service_plan
• azurerm_function_app

Terraform Configuration Files

resource "azurerm_app_service_plan" "aws" {
    name = "${var.aws_app_service_plan_name}"
    location = "${azurerm_resource_group.rg.location}"
    resource_group_name = "${azurerm_resource_group.rg.name}"
    kind = "FunctionApp"
    reserved = true

    #Consumption Plan
    sku {
        tier = "Dynamic"
        size = "Y1"
    }

    tags = "${var.tags}"
}

resource "azurerm_function_app" "aws" {
    name = "${var.aws_func_app_name}"
    resource_group_name = "${azurerm_resource_group.rg.name}"
    location = "${azurerm_resource_group.rg.location}"
    app_service_plan_id = "${azurerm_app_service_plan.aws.id}"
    storage_connection_string = "${azurerm_storage_account.aws.primary_connection_string}"
    https_only = true
    version = "~2"

    app_settings = {
        FUNCTIONS_WORKER_RUNTIME = "python"
        ...
    }

    identity {
        type = "systemAssigned"
    }
    tags = "${var.tags}"
}

Debug Output

https://gist.github.com/ecnerual/9792599deb0588443a055cde6bdf7b4b

Expected Behavior

Should Create a Linux Consumption plan Service Plan

Actual Behavior

Error: Error creating/updating App Service Plan "aws-security-dev-service-plan" (Resource Group "aws-security-zone-dev-rg"): web.AppServicePlansClient#CreateOrUpdate: Failure sending request: StatusCode=400 -- Original Error: Code="BadRequest" Message="The parameter 'SKU' has an invalid value. Details: Dynamic sku is not allowed." Details=[{"Message":"The parameter 'SKU' has an invalid value. Details: Dynamic sku is not allowed."},{"Code":"BadRequest"},{"ErrorEntity":{"Code":"BadRequest","ExtendedCode":"01033","Message":"The parameter 'SKU' has an invalid value. Details: Dynamic sku is not allowed.","MessageTemplate":"The parameter '{0}' has an invalid value. Details: {1}.","Parameters":["SKU","Dynamic sku is not allowed"]}}]

Steps to Reproduce

1. terraform apply

[GarethBradshaw]

We have the same issue. I contacted MSFT about this issue and they referred me to this link saying that when creating Linux Consumption Function App you cannot create the plan separately as it's created automatically and that you need to specify the "kind" and "reserved" as part of the function app resource. https://docs.microsoft.com/en-us/azure/azure-functions/functions-infrastructure-as-code#deploy-on-consumption-plan

[lubbers]

@GarethBradshaw Thanks for gathering additional information from Microsoft. Do we have an existing solution using the supported configurations within Terraform or do we think this a new feature?

[ecnerual]

I have contacted Microsoft's support for some help about this issue. There was a bug in their backend and its now Fixed.

Regards!

[UnoSD]

@ecnerual Were you able then to create a Linux consumption plan resource then? Or do you require Terraform changes to not require a plan in the resource?

[ecnerual]

@UnoSD I have been able to create a Linux consumption plan resource! I havent modified anything in my code.

This exemple worked for me!

resource "azurerm_app_service_plan" "aws" {
    name = "${var.aws_app_service_plan_name}"
    location = "${azurerm_resource_group.rg.location}"
    resource_group_name = "${azurerm_resource_group.rg.name}"
    kind = "FunctionApp"
    reserved = true

    #Consumption Plan
    sku {
        tier = "Dynamic"
        size = "Y1"
    }

    tags = "${var.tags}"
}

[UnoSD]

@ecnerual Thank you for confirming that and sharing the code;

looks pretty much the same as the one I had, I will give it another try later.

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