SYSTEM Cited by 1 source

OpenSearch¶

OpenSearch is the Apache-2.0-licensed fork of Elasticsearch + Kibana maintained by the OpenSearch community (originally forked by AWS after Elastic's 2021 license change to SSPL/Elastic License v2). It is a distributed search and analytics engine with a REST API, Lucene-backed indexing, and a Kibana-compatible dashboards component (OpenSearch Dashboards).

How Fly.io uses it¶

Fly.io runs OpenSearch as the permanent-retention audit trail for token operations from tkdb — "since virtually all the operations that happen on our platform are mediated by Macaroons, this audit trail is itself pretty powerful." (Source: sources/2025-03-27-flyio-operationalizing-macaroons.)

Distinct from Fly's metrics stack (Prometheus) and tracing stack (Honeycomb + OpenTelemetry) — OpenSearch here serves the forensic-audit use case specifically, where arbitrary ad-hoc queries over history are the primary requirement.

Seen in¶

sources/2025-03-27-flyio-operationalizing-macaroons — Fly.io's permanent-retention audit trail for token operations.

systems/elasticsearch — the upstream Elasticsearch fork.
concepts/audit-trail-in-opensearch
systems/honeycomb
systems/opentelemetry

OpenSearch¶

How Fly.io uses it¶

Seen in¶

Related¶