azure - 无法自定义 Azure 监视器警报电子邮件主题

Question

我们正在使用以下代码通过 terraform 创建 azure 监视器警报。azurerm 提供了一个字段来自定义电子邮件主题。但它似乎永远不会奏效。电子邮件主题总是有类似的东西

“解雇：Sev4 Azure Monitor Alert [alert-name] at [time]”

如何通过 terraform 自定义 Azure Monitor 警报的电子邮件主题？

resource "azurerm_monitor_scheduled_query_rules_alert" "example" {
  name                = format("%s-queryrule", var.prefix)
  location            = azurerm_resource_group.example.location
  resource_group_name = azurerm_resource_group.example.name

  action {
    action_group           = []
    email_subject          = "Email Header" // This never works !!!
  }

  data_source_id = azurerm_application_insights.example.id
  description    = "Alert when total results cross threshold"
  enabled        = true
  query       = <<-QUERY
  requests
    | where tolong(resultCode) >= 500
    | summarize count() by bin(timestamp, 5m)
  QUERY
}