Azurerm_function_app version 3 adds an unsupported app config

[ManuSQLGeek]

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Terraform (and AzureRM Provider) Version

Affected Resource(s)

• azurerm_function_app

Terraform Configuration Files

  name                       = var.function_app_name
  resource_group_name        = var.resource_group_name
  location                   = var.location
  app_service_plan_id        = azurerm_app_service_plan.app_service_plan.id
  storage_account_name       = azurerm_storage_account.function_app_sa.name
  storage_account_access_key = azurerm_storage_account.function_app_sa.primary_connection_string
  version                    = "~3"
  app_settings                 = {
    FUNCTIONS_WORKER_RUNTIME = "dotnet"
  }
  site_config {
    always_on                = true
  }
  identity {
      type = "SystemAssigned"
  }
  tags                       = local.tags
}

Debug Output

Panic Output

Expected Behavior

When we specify version = "~3" the app should not have a app config value set for AzureWebJobsDashboard.

According to Microsoft documentation (https://docs.microsoft.com/en-us/azure/azure-functions/functions-app-settings#azurewebjobsdashboard) this is a valid setting only for version 1.

Actual Behavior

The deployment is adding the config value for AzureWebJobsDashboard setting under configuration which is leaving the function app in a runtime error state.


Steps to Reproduce

1. terraform apply

Important Factoids

References

• #0000

[JeremyBouchet]

Hello,

I encounter the same issue.

I must deploy an Azure Function with the runtime version 3 and I encounter the below error :
"
Error: web.AppsClient#CreateOrUpdate: Failure sending request: StatusCode=0 -- Original Error: Code="BadRequest" Message="The storage URI is invalid." Details=[{"Message":"The storage URI is invalid."},{"Code":"BadRequest"},{"ErrorEntity":{"Code":"BadRequest","ExtendedCode":"04203","Message":"The storage URI is invalid.","MessageTemplate":"The storage URI is invalid.","Parameters":["Duplicate setting 'AccountName' found."]}}]
"
My Terraform code

resource "azurerm_function_app" "AF-Core-steps" {
  name                        = "AF-${var.client}-${var.environment}-${var.project_Flux}-IT-CORE-steps"
  location                    = module.resource_group_CORE.out_rg_location
  resource_group_name         = module.resource_group_CORE.out_rg_name
  app_service_plan_id         = azurerm_app_service_plan.ASP-Core.id
  https_only                  = "true"
  version                     = "~3"
  storage_account_name        = module.storage_account_CORE.out_storage_account_name
  storage_account_access_key  = module.storage_account_CORE.out_storage_primary_connection_string
  tags                        = merge(var.default_tags, var.default_Core_tags, var.AF-Core-steps_tags)

 lifecycle {
    ignore_changes = all
  }
}

Is anyone find a solution to deploy Function App with the runtime version 3 with Terraform ?

regards,

[rohit-prakash]

Hi,

I am specifying the version in app_settings and its working for me

My code

resource "azurerm_function_app" "this" {
name = azurecaf_name.function_app.result
location = var.location
resource_group_name = azurerm_resource_group.app.name
app_service_plan_id = module.appserviceplan.id
storage_account_name = azurerm_storage_account.this.name
storage_account_access_key = azurerm_storage_account.this.primary_access_key
os_type = "linux"
version = "~3"
site_config {
linux_fx_version = "DOTNET|3.1"
}
app_settings = {
FUNCTIONS_EXTENSION_VERSION = "~3"
}
identity {
type = "SystemAssigned"
}
}

[drdamour]

this should apply to any version that is not ~1, so should omit for ~4 as well. It logs a warning if it's set per Azure/Azure-Functions#1923