obs(orphan-db-sweep): alert + dashboard + catalog for audit-only orphan-DB sweep#68
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…an-DB sweep metrics
Rule-25 observability for worker #102's two metrics (instant_orphan_db_sweep_candidates_total{kind} + _current{kind}). The audit-only orphan-DB/redis-namespace sweep is flag-gated OFF, so the gauge stays 0 until enabled; these surface the ~25-orphan drain backlog so the candidate list can be reviewed before any destructive enablement (which routes only through the audited provisioner chokepoint — never a raw DROP, truehomie).
- k8s/prometheus-rules.yaml: instant-worker-orphan-db-sweep group, candidates_current > 25 for 1h -> P2.
- newrelic/alerts/orphan-db-sweep-backlog.json + dashboard tile + 2 METRICS-CATALOG rows.
infra has no auto-apply (rule 15) — operator applies prometheus-rules + imports the NR alert/dashboard.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Rule-25 observability for the two metrics introduced in worker #102 (the audit-only orphan-DB / redis-namespace sweep):
instant_orphan_db_sweep_candidates_total{kind}+instant_orphan_db_sweep_candidates_current{kind}.The sweep is flag-gated OFF (
ORPHAN_DB_SWEEP_ENABLED), so the gauge stays 0 until enabled; these surface the ~25-orphan drain backlog so the candidate list can be reviewed before any destructive enablement. The destructive arm (ORPHAN_DB_SWEEP_DESTRUCTIVE_ENABLED) reclaims only via the audited provisionerDeprovisionResourcechokepoint — never a raw DROP (truehomie, 2026-06-03).What's here
k8s/prometheus-rules.yaml—instant-worker-orphan-db-sweepgroup;max(...candidates_current) by (kind) > 25for 1h → P2 (warning). Only fires once the sweep flag is on.newrelic/alerts/orphan-db-sweep-backlog.json— NRQL alert (max candidates_current, faceted by kind, ABOVE 25).newrelic/dashboards/instanode-reliability.json— backlog-by-kind line tile.observability/METRICS-CATALOG.md— 2 catalog rows.Apply
infra has no auto-apply (rule 15) — operator applies
prometheus-rules.yaml+ imports the NR alert/dashboard.validate.yml(yamllint + kubeconform) is the gate; YAML/JSON validated locally.Completes the rule-25 obligation for worker #102.
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