Observability dashboards and alerts for SLOs

[JoshuaAFerguson]

Summary

Need starter Grafana dashboards and alert rules aligned to SLOs (API latency/error, session start latency, agent heartbeat, VNC connect, webhooks).

Scope

• Dashboard/alert configs

Acceptance Criteria

• Dashboards covering control plane health, session lifecycle, agents, security signals, and webhooks per design doc.
• Alerts for: API 5xx/latency, session start p99, agent heartbeat stale, VNC connect success, webhook failure rate.
• Checked into repo (json/helm values) or documented steps.

References

• ../streamspace-design-and-governance/06-operations-and-sre/observability-dashboards.md
• ../streamspace-design-and-governance/06-operations-and-sre/slo.md

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Agent Assignment: Builder (Agent 2)
Priority: P1 - URGENT

[JoshuaAFerguson]

✅ Implementation Complete - Ready for Testing

Agent: Builder (Agent 2)
Branch: claude/v2-builder
Commit: 7e8814f

What was implemented:

Grafana Dashboards (chart/templates/grafana-dashboard.yaml)

Three ConfigMap-based dashboards aligned with SLOs:

1. Control Plane Health (streamspace-control-plane)

   • API Availability (SLO: 99.5%)
   • API p99 Latency (SLO: <800ms)
   • 5xx Error Rate (Alert: >2%)
   • Database: query latency, connections, errors
   • System: goroutines, memory, GC metrics

2. Session Lifecycle (streamspace-sessions)

   • Session Start Latency warm/cold (SLO: p99 <12s warm, <25s cold)
   • Session Failure Rate (SLO: <2%)
   • VNC Connect Success (SLO: >98%)
   • WebSocket connections and disconnect reasons
   • Session operations rate by type

3. Agents (streamspace-agents)

   • Agent health (online/degraded/offline)
   • Heartbeat Freshness (SLO: 99% within 2x interval)
   • Capacity utilization per agent
   • Schedule and image pull failures

Prometheus Alert Rules (chart/templates/prometheusrules.yaml)

9 rule groups with 25+ alerts:

Group	Key Alerts
API Availability	APIDown, HighErrorRate (>2%), Warning (>1%)
API Latency	HighLatency (>800ms), Warning (>500ms)
Sessions	StartLatencyWarm (>12s), StartLatencyCold (>25s), FailureRate
VNC	ConnectSuccessLow (<98%), WebSocketDisconnects
Agents	HeartbeatStale (>5%), AgentOffline, CapacityHigh
Database	ConnectionFailed, QueryLatencyHigh
Security	AuthFailuresHigh, RateLimitHits
Webhooks	FailureRateHigh (>10%), RetryQueueHigh
Error Budget	BurnRateHigh (25% monthly in 1 day)

Documentation (chart/README.md)

• Added "Observability Dashboards" section
• Dashboard descriptions and metrics covered
• Alert rules table
• Manual installation instructions
• Grafana sidecar configuration

Testing Recommendations:

1. Helm lint:

   cd chart && helm lint . --set monitoring.enabled=true

2. Template validation:

   helm template . --set monitoring.enabled=true | head -100

3. Deploy to test cluster:

   helm upgrade --install streamspace . \
     --set monitoring.enabled=true \
     --namespace streamspace

4. Verify Grafana dashboards:

   • Check ConfigMaps created with grafana_dashboard: "1" label
   • Import dashboards manually or verify sidecar discovery

5. Verify PrometheusRules:

   • Check PrometheusRule CRD created
   • Verify alerts appear in Prometheus/Alertmanager

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Status: 🟢 Ready for Validator (Agent 3)