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ADR 0014: Telemetry (app logs, metrics) stays on each node; only state is replicated

  • Status: Accepted
  • Date: 2026-11-02
  • Ledger id: D-0014
  • Tags: architecture, observability
  • Supersedes: none
  • Superseded by: none
  • Related: none

Context

Shipping all logs to the primary would saturate it and make it the weak point.

Decision

Telemetry (app logs, metrics) stays on each node; only state is replicated.

Panel queries node telemetry through the primary on demand; optional archive to S3/R2.

Consequences

  • This decision is binding for all contributors and agents. Changing it requires a new ADR approved by the maintainer (see ADR 0036).

Generated from decision D-0014 in the project decision ledger. Do not edit by hand; changes go through a new decision.