> For the complete documentation index, see [llms.txt](https://docs.nexthink.com/platform/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.nexthink.com/platform/ja/references/references-classic/glossary-classic/alert-classic.md).

# アラート（クラシック）

アラートは、ITインフラストラクチャにおける特定の状況を警告します。 アラートは通常、対処が必要な問題の発生を示します。 アラートの背後にある考えは、システムの問題を常に確認する必要がなく、システムがそれを検知し、発生時に通知してくれることです。 アラートには2種類あります:

調査ベースのアラート

FinderでInvestigationsを使用して指定できる条件によってトリガーされます。

サービスベースのアラート

Portalに追加したリアルタイムサービスの警告またはエラー条件によってトリガーされます。

***

関連タスク

* [アラートの受信](/platform/ja/user-guide/alerts-and-diagnostics/alerts-classic/receiving-alerts-classic.md)
* [サービスベースのアラートの作成](/platform/ja/user-guide/alerts-and-diagnostics/alerts-classic/creating-a-service-based-alert-classic.md)
* [調査ベースのアラートの作成](/platform/ja/user-guide/alerts-and-diagnostics/alerts-classic/creating-a-service-based-alert-classic.md)


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