Mawrooth · RB-MWINVOICING

Invoice & PDF Service — incident runbook

Runbook hubMawrooth console

Invoice & PDF Service is monitored by Invoice generation monitor on invoice generation failure rate. It is owned by Platform Finance and serves the business services listed below. Use this runbook when an alert fires on this component.

Warning at invoice generation failure rate ≥ 2%, critical at ≥ 5%. Critical means user-visible impact: page the escalation owner.

dashboard: sim://grafana/mw-invoicinglogs: sim://logs/mw-invoicingowner: Platform Financerunbook: RB-MWINVOICING

Signals & thresholds

  • Primary metric: invoice generation failure rate (%)
  • Warning threshold: ≥ 2%
  • Critical threshold: ≥ 5%
  • Dashboard: sim://grafana/mw-invoicing
  • Log source: sim://logs/mw-invoicing
  • SLA: 99.5% monthly availability
  • SLO: 99.9% of requests under warning threshold
  • External dependencies: Supabase PostgreSQL / APIs / Realtime, Supabase Storage

1. Detection

  1. Invoice generation monitor reports invoice generation failure rate above the warning threshold with errors returned by Supabase PostgreSQL / APIs / Realtime, Supabase Storage.
  2. Provider status page or error codes confirm degraded service.

2. Triage

  1. Confirm reachability and response codes for Supabase PostgreSQL / APIs / Realtime, Supabase Storage.
  2. Separate credential/authorisation failures from provider unavailability.
  3. Check credential and certificate expiry for the affected connection.
  4. Measure how many operations are queued waiting on the provider.

3. Mitigation

  1. Enable backoff-with-queue so nothing is lost while the provider is down.
  2. Refresh or re-issue credentials if the failure is authorisation related.
  3. Notify the business owner with the queue size and expected recovery.
  4. Do not mark dependent business records as complete until the provider confirms.

4. Verification

  1. Confirm invoice generation failure rate has been below the warning threshold for at least 10 minutes.
  2. Confirm the affected business services are healthy on the dashboard.
  3. Confirm no alerts remain open for this component and its downstream consumers.
  4. Spot-check one real end-to-end operation through the affected flow.

5. Rollback / restore

  1. If a deploy caused the incident, roll back to the previous release and re-verify.
  2. If a configuration or threshold change caused it, restore the previous value and record why.
  3. Re-enable any job, feature flag or channel that was paused during mitigation, one at a time.

Escalation path

  • First responder: NOC on duty — acknowledge within 5 minutes.
  • Component owner: Platform Finance.
  • Escalation owner (page on critical): Platform Finance.
  • Escalate if the metric is still critical 15 minutes after mitigation, or if data integrity is in doubt.
  • Declare a major incident if two or more critical components are alerting at the same time.

Blast radius — business services affected (3)

Invoices & ReceiptsInvoice Compliance ChecksVAT Returns & Filing

External dependencies

Supabase PostgreSQL / APIs / Realtime — Primary data plane, RPC and realtime channels

Supabase Storage — Document, media and attachment object storage

Simulated incidents that exercise this runbook

Media storage degradation — Object storage latency spike; photos, videos and invoice PDFs slow to load.

Reporting notes

  • Record start time, actions taken and recovery time in the incident record.
  • Attach the dashboard screenshot and the dominant error message to the postmortem.
  • Content drafted for the monitoring demo — confirm the exact commands with the owning team before production use.