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Flowlogs/ネットワークキャプチャ

Last updated at Posted at 2023-04-20

ネットワークキャプチャとは

ネットワークを流れるパケットを収集すること。
⇒安定稼働のための運用状況の把握
⇒トラブル発生時の問題解決

Flow logs

ネットワークトラフィックのログを取得するサービス
⇒ログはS3やCloudWatch Logsに保管

  • CloudWatch Logs⇒CloudWatch Logsフィルターで検索
  • S3⇒Amazon Athena⇒SQLクエリで検索
  • 様々な単位で取得可能。(VPC単位、サブネット単位、ENI単位)
  • ネットワークトラフィックの外でログ取得するので、ネットワークパフォーマンスに影響しない。

参考:CloudWatch Logs へのフローログの発行

https://docs.aws.amazon.com/ja_jp/vpc/latest/userguide/flow-logs-cwl.html
https://docs.aws.amazon.com/ja_jp/vpc/latest/userguide/flow-logs.html#flow-log-records
https://docs.aws.amazon.com/ja_jp/vpc/latest/userguide/working-with-flow-logs.html

参考:Amazon Athenaを使用したフローログのクエリ

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