# Telemetry observability runbook (stub · 2025-11-29 demo)

## Dashboards (offline import)
- Grafana JSON: `docs/modules/telemetry/operations/dashboards/telemetry-observability.json` (import locally; no external data sources assumed).
- Planned panels: collector uptime, scrape errors, ingestion/backlog per tenant, storage retention headroom, query latency p95/p99, and OTLP export errors.

## Key metrics
- `telemetry_collector_uptime_seconds` — per-collector uptime.
- `telemetry_scrape_failures_total{job}` — scrape failures per job.
- `telemetry_ingest_backlog` — queued spans/logs/metrics awaiting storage.
- `telemetry_storage_retention_percent_used` — storage utilization against retention budget.
- `telemetry_query_latency_seconds_bucket{route}` — API/query latency.
- `telemetry_otlp_export_failures_total{signal}` — OTLP export failures by signal.

## Logs & traces
- Correlate by `trace_id` and `tenant`; include `collector_id`, `pipeline`, `exporter` fields.
- Traces disabled by default for air-gap; enable by setting OTLP endpoints to on-prem collectors.

## Health/diagnostics
- `/health/liveness` and `/health/readiness` (collector + storage gateway) check exporter reachability and disk headroom.
- `/status` exposes build version, commit, feature flags; verify against offline bundle manifest.
- Storage probe: `GET /api/storage/usage` (if available) to confirm retention headroom; otherwise rely on Prometheus metrics.

## Alert hints
- OTLP export failures > 0 over 5m.
- Ingest backlog above threshold (configurable per tenant/workload).
- Query latency p99 > 1s for `/api/query` routes.
- Storage utilization > 85% of retention budget.

## Offline verification steps
1) Import Grafana JSON locally; point to Prometheus scrape labeled `telemetry`.
2) Run collector smoke: push sample OTLP spans/logs/metrics to local collector and confirm metrics emit in Prometheus.
3) Fetch `/status` and compare commit/version to offline bundle manifest.

## Evidence locations
- Sprint tracker: `docs/implplan/SPRINT_0330_0001_0001_docs_modules_telemetry.md`.
- Module docs: `README.md`, `architecture.md`, `implementation_plan.md`.
- Dashboard stub: `operations/dashboards/telemetry-observability.json`.