Canary and operate disaster recovery

From a fresh clone/directory, run the commands that prove drill DR-2026-07-30: restore completes 97m; gold citation_precision ≥ 0.95. A second person plays DR lead failing over region A → B within RTO 2h / RPO 15m and follows your script without coaching. The demo includes limitations: what regional RAG platform restore with PostgreSQL + object storage + vector indexes still will not do.

Bundle: contract snippet, passing tests, metric snapshot for rto_minutes, rpo_minutes, citation_precision_post_restore, security negative probe, rollback note, owner name. Reference DR-2026-07-30 as the drill you rehearsed. If any item is missing, the ship gate fails even if the happy path dazzles.

For Disaster recovery lab, name the human who gets paged, the review date for thresholds, and the condition that triggers reevaluation. Endpoint region-b https://b.rag.example remains the production surface you operate for regional RAG platform restore with PostgreSQL + object storage + vector indexes — not a slide. Keep DR-2026-07-30 in the handoff template so the next owner inherits the drill.

After the peer demo, schedule the next threshold review date. File a short changelog that mentions DR-2026-07-30 and the control that addresses it. Archive the evidence pack where your team already stores launch records. Resist rewriting everything “for real production” in one weekend — operate this slice until the metrics bore you, then widen. Final self-check: if telemetry vanished, would you still know to hold? If yes, you learned the operating posture this lane teaches.

Trim the demo script until every command is necessary. Record a peer signature line: name, date UTC, pass/fail. File known limitations as bullets, not apologies. Link the evidence pack from the README. Schedule the next game day on a calendar, even if it is solo. Archive the branch tag or release digest you actually shipped. In this chapter the product is regional RAG platform restore with PostgreSQL + object storage + vector indexes, the human stakeholder is DR lead failing over region A → B within RTO 2h / RPO 15m, and the incident id you design against is DR-2026-07-30. Re-state the oracle in your notes — drill DR-2026-07-30: restore completes 97m; gold citation_precision ≥ 0.95 — and keep the invariant visible: restore validates citation gold set before traffic; corrupt snapshot rejected. Track rto_minutes, rpo_minutes, citation_precision_post_restore as the scoreboard. Surface under change control: region-b https://b.rag.example. If you only have forty minutes, finish the fixture for traffic cut before vector rebuild finishes — fluent ungrounded answers before polishing UI. Promotion language stays ternary: promote, hold, or roll back based on evidence, not hope.