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docs(kms): add observability dashboard, alert rules and runbook (#5517)

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Add a Grafana dashboard for the four KMS backend operation metrics
emitted at the policy choke point, Prometheus alert rules with
conservative default thresholds (pending staging baseline calibration),
and an operations runbook documenting the metric contract and the
response procedure for each alert. Register the new alert rules file in
the observability READMEs.

Refs rustfs/backlog#1584 (part of rustfs/backlog#1562)
This commit is contained in:
Zhengchao An
2026-08-01 05:28:10 +08:00
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parent 74019845c4
commit 792f2ef204
6 changed files with 1133 additions and 0 deletions
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.docker/observability/README.md
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@@ -60,6 +60,16 @@ The file `prometheus-rules/rustfs-get-optimization-alerts.yaml` contains pre-con
| `CodecStreamingFallbackSpike` | Warning | Codec streaming fallback > 10x baseline for 10m |
| `IoQueueSaturation` | Warning | IO queue utilization > 90% for 5m |
The file `prometheus-rules/rustfs-kms-alerts.yml` contains alerting rules for the KMS backend operation metrics. Thresholds are conservative defaults pending staging baseline calibration; response procedures live in `docs/operations/kms-observability-runbook.md`, and the matching dashboard is `deploy/observability/grafana/rustfs-kms-observability.json`.
| Alert | Severity | Condition |
|-------|----------|-----------|
| `KmsBackendFatalErrors` | Critical | Fatal (non-retryable) attempt failures > 0 for 5m |
| `KmsBackendHighErrorRate` | Critical | Non-success operation ratio > 5% for 10m (with traffic guard) |
| `KmsBackendP99LatencyHigh` | Warning | Operation p99 duration (incl. retries) > 2s for 10m |
| `KmsBackendAttemptFailureSpike` | Warning | Attempt failure rate > 0.5/s for 10m |
| `KmsBackendRetryBudgetExhausted` | Warning | budget_exhausted / deadline_exceeded outcomes > 0.05/s for 10m |
### Enabling Alert Rules
Add the alert rules file to your Prometheus configuration: