Terraform-provider-azurerm: Manually deleting function app and running terraform apply errors with Error making Read request on AzureRM Function App AppSettings

[Mark-Wilkins]

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Terraform Version

Terraform v0.11.7

Affected Resource(s)

azurerm v1.12.0

Terraform Configuration Files

# create the resource group
resource "azurerm_resource_group" "rg" {
  name     = "${var.resourceGroupName}"
  location = "${var.resourceGroupLocation}"
}

# create the app insights plan
resource "azurerm_application_insights" "ai" {
  name                = "${var.appInsightsName}"
  location            = "${azurerm_resource_group.rg.location}"
  resource_group_name = "${azurerm_resource_group.rg.name}"
  application_type    = "Web"
}

# create the storage account
resource "azurerm_storage_account" "strg" {
  name                     = "${var.storageAccountName}"
  location                 = "${azurerm_resource_group.rg.location}"
  resource_group_name      = "${azurerm_resource_group.rg.name}"
  account_kind             = "StorageV2"
  account_tier             = "Standard"
  account_replication_type = "LRS"
  access_tier              = "Cool"
}

# create the app service plan
resource "azurerm_app_service_plan" "asp" {
  name                = "${var.appServicePlanName}"
  location            = "${azurerm_resource_group.rg.location}"
  resource_group_name = "${azurerm_resource_group.rg.name}"
  kind                = "FunctionApp"

  sku {
    tier = "Dynamic"
    size = "Y1"
  }
}

# create the function app
resource "azurerm_function_app" "function" {
  name                      = "${var.functionAppName}"
  location                  = "${azurerm_resource_group.rg.location}"
  resource_group_name       = "${azurerm_resource_group.rg.name}"
  app_service_plan_id       = "${azurerm_app_service_plan.asp.id}"
  storage_connection_string = "${azurerm_storage_account.strg.primary_connection_string}"

  app_settings {
    "AppInsights_InstrumentationKey" = "${azurerm_application_insights.ai.instrumentation_key}"
        "StatusPageContainer" = "${azurerm_storage_account.strg.primary_connection_string}"
  }
}

Debug Output

Panic Output

Expected Behavior

terraform apply should generate a create plan for the function app

Actual Behavior

When running terraform apply the following error is thrown during the refresh state step.
Error refreshing state.
azurerm_function_app.function: Error making Read request on AzureRM function App AppSettings "xxxxx": web.AppsClient#ListApplicationSettings: Failure responding to request: StatusCode=404 -- Original Error: autorest/azure: Service returned an error. Status=404 Code="ResourceNotFound" Message="The Resource 'Microsoft.Web/sites/xxxxx" under resource group 'xxxxxxxx' was not found."

Steps to Reproduce

1. terraform apply
2. Manually delete function app via Azure portal.
3. terraform apply

Important Factoids

If deleting a storage account manually and running terraform apply, the create plan is generated successfully.

[catsby]

Seems we need to check for 404 reply here:

• https://github.com/terraform-providers/terraform-provider-azurerm/blob/293e862a025fa7b37e736d95780471d87b713e9e/azurerm/resource_arm_function_app.go#L335

Similar to how it's done just a few lines above, with utils.ResponseWasNotFound(resp.Response).

[DexterPOSH]

@catsby Can I take this issue up and work on it? If not assigned to someone else.

[catsby]

@DexterPOSH I'm not active on this project, but it's likely OK to pick up, thanks!

[tombuildsstuff]

hi @Mark-Wilkins @DexterPOSH

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!

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