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Josh Creek
24 lines
1.3 KiB
Markdown
24 lines
1.3 KiB
Markdown
# Multiplayer observability
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The control plane exposes `/metrics` with bounded operation and status labels.
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The API latency metric is a cumulative histogram, so Prometheus can evaluate
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the documented 250 ms p95 SLO with `histogram_quantile`. The optional
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`deploy/observability/prometheus-rules.yaml` resource provides the API p95 and
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5xx alerts for clusters running the Prometheus Operator. The matching optional
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`deploy/observability/prometheus-service-monitor.yaml` discovers the internal
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control-plane Service on its named `http` port and scrapes only `/metrics`.
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`scripts/verify_observability_manifests.py` is included in the local
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multiplayer gate and checks this Service/monitor contract without requiring a
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Kubernetes or Prometheus installation.
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Install the rule only after confirming that the `PrometheusRule` CRD and the
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`ServiceMonitor` CRD and the `cosmic-clash` namespace exist. The example
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`runbook_url` values are
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placeholders and must be replaced with the operator's incident documentation
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before production use.
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This artifact intentionally does not claim coverage for regional RTT,
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allocation/connect latency, tick headroom, durable-result success, or cost.
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Those SLOs need additional server, allocator, and game-server series before
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they can be alerted on safely; the current exporter cannot manufacture them.
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