Cloud Service Mesh は、Service Directory サービスに接続されているバックエンド サービスを解決する際に、Service Directory からエンドポイントのリストを取得します。サービスが Service Directory から削除されている場合、Cloud Service Mesh はエンドポイントを取得しません。このような場合、ログエントリが Logging に追加されます。このログエントリは、次の情報で構成されています。
バックエンド サービス名
Service Directory 名
メッセージ: Service Directory returned 0 endpoints for this service.
この情報は問題のデバッグに役立ちます。事前対策としてアラートを設定することもできます。
モニタリング
ロギングの場合と同様に、Cloud Service Mesh は Monitoring と統合して指標を生成します。Cloud Service Mesh は、バックエンド サービスごとに次の指標を Monitoring に追加します。
バックエンド サービス名
このバックエンド サービスに関連付けられ、Cloud Service Mesh のクライアントと共有されているエンドポイントの数
Cloud Service Mesh のクライアントは、エンドポイントのないバックエンド サービスにはトラフィックを送信できません。
Google Cloud コンソール
Service Directory サービスが削除され、そのサービスへのアタッチメントが Cloud Service Mesh バックエンド サービスに存在している場合、Google Cloud コンソールに The attached
Service Directory service could not be found. という警告が表示されます。
[[["わかりやすい","easyToUnderstand","thumb-up"],["問題の解決に役立った","solvedMyProblem","thumb-up"],["その他","otherUp","thumb-up"]],[["わかりにくい","hardToUnderstand","thumb-down"],["情報またはサンプルコードが不正確","incorrectInformationOrSampleCode","thumb-down"],["必要な情報 / サンプルがない","missingTheInformationSamplesINeed","thumb-down"],["翻訳に関する問題","translationIssue","thumb-down"],["その他","otherDown","thumb-down"]],["最終更新日 2025-09-04 UTC。"],[],[],null,["# Observability and debugging with Service Directory\n==================================================\n\n|\n| **Preview**\n|\n|\n| This product or feature is subject to the \"Pre-GA Offerings Terms\" in the General Service Terms section\n| of the [Service Specific Terms](/terms/service-terms#1).\n|\n| Pre-GA products and features are available \"as is\" and might have limited support.\n|\n| For more information, see the\n| [launch stage descriptions](/products#product-launch-stages).\n| **Deprecated:** Cloud Service Mesh's integration with Service Directory is going to be deprecated. Creating new service binding resources will be disabled.\n\nCloud Service Mesh's integration with Service Directory introduces new\ncomplexities in debugging. Within your business, service consumers and\nservice producers might belong to different teams or organizations. To help you\ndebug such issues, Cloud Service Mesh integrates with Cloud Logging and\nCloud Monitoring.\n\nFor example:\n\n- You have a `checkout` service that uses Cloud Service Mesh for application networking.\n- There's a `payment` service in Service Directory that a different team (the *service producer*) owns and maintains.\n- You want to call on the `payment` service from the `checkout` service so you create a new backend service in Cloud Service Mesh. This backend service attaches to the `payment` service using Service Directory for service discovery.\n\nIn this model, the service producer might want to delete or modify the `payment`service that is hosted in Service Directory. Because they own\nthe `payment` service, they are permitted to make such changes. But if the\n`payment` service is deleted, service discovery is broken.\n| **Note:** This guide only supports Cloud Service Mesh with Google Cloud APIs and does not support Istio APIs. For more information see, [Cloud Service Mesh overview](/service-mesh/docs/overview).\n\nLogging\n-------\n\nWhen Cloud Service Mesh resolves a backend service that is attached to a\nService Directory service, it gets a list of endpoints from\nService Directory. If the service has been deleted from\nService Directory, Cloud Service Mesh doesn't get any endpoints.\nIn such a case, a log entry is added to Logging. The log entry\nincludes the following information:\n\n- The backend service name\n- The Service Directory name\n- A message: `Service Directory returned 0 endpoints for this service.`\n\nThis information helps you debug issues. You can also set up alerts to be\nproactively notified.\n\nMonitoring\n----------\n\nSimilar to the logging case, Cloud Service Mesh integrates with\nMonitoring to generate metrics. Cloud Service Mesh adds the\nfollowing metrics to Monitoring for each backend service:\n\n- The backend service name\n- The number of endpoints associated with this backend service that are shared with Cloud Service Mesh's clients\n\nCloud Service Mesh clients are not able to send traffic to backend services that\ndon't have endpoints.\n\nGoogle Cloud console\n--------------------\n\nIf a Service Directory service is deleted and an attachment to\nthat service exists in the Cloud Service Mesh backend service, the\nGoogle Cloud console displays a warning: `The attached\nService Directory service could not be found.`\n\nWhat's next\n-----------\n\n- Learn about [integrating Cloud Service Mesh with Service Directory](/service-mesh/docs/service-routing/service-directory-integration).\n- Learn how to [set up the integration](/service-mesh/docs/service-routing/service-directory-integration-setup).\n- Learn about [Service Directory observability](/service-directory/docs/monitoring)."]]