The dashboard uses the RustFS server metric label introduced with the node-local observability updates. server represents the RustFS node identity and is preferred for RustFS node comparisons. Prometheus instance still identifies the scrape target and remains useful for scrape/debugging views, but dashboards that compare RustFS nodes should group and filter by server.

During a rolling upgrade, older nodes may still emit metrics without the server label. Complete the rollout before using this dashboard for node-by-node comparisons.

grafana/rustfs-kms-observability.json covers the KMS backend operation metrics emitted at the operation-policy choke point. Unlike the node dashboard, KMS metrics do not carry the server label — use job/instance or promoted OTel resource attributes to split by node. Matching Prometheus alert rules live in .docker/observability/prometheus-rules/rustfs-kms-alerts.yml, and the alert response procedures are documented in docs/operations/kms-observability-runbook.md.