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Mackerel Log Feature Enters Public Beta; Integrated Into FSx for ONTAP OTLP Pipeline

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Hatena's observability platform Mackerel launched its log ingestion feature as a public beta on July 16, 2026, prompting a new integration for shipping FSx for ONTAP audit logs, EMS events, and FPolicy events to the platform. The integration uses an existing AWS Lambda and OpenTelemetry Collector pipeline, with two delivery paths tested end-to-end against a live Mackerel account. While the OTel Collector path worked with a simple configuration addition, the direct Lambda-to-Mackerel path required custom fixes for a non-standard API key header and mandatory Protobuf encoding, as Mackerel rejects OTLP/JSON. Developers are advised to use the Collector path for any production workloads and to avoid relying on Mackerel as the sole audit log destination while the feature remains in beta.

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