ced4568
4e8fa1d413
Self-hosted, no paid SaaS. Host/container/Postgres metrics, uptime probes against the new /healthz endpoints, alert rules split critical (pages) vs warning (informational), one starter Grafana dashboard. Deliberately separate from the application's instructor learning analytics (Phase 3B) - different audience, different data. Validated: promtool check config (valid), promtool check rules (11 rules, valid), amtool check-config (1 inhibit rule, 2 receivers, valid).
55 lines
2.5 KiB
JSON
55 lines
2.5 KiB
JSON
{
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"title": "RootNode Academy — Infrastructure Overview",
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"uid": "rootnode-overview",
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"schemaVersion": 39,
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"version": 1,
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"timezone": "utc",
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"refresh": "30s",
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"time": { "from": "now-6h", "to": "now" },
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"panels": [
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{
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"id": 1, "title": "Platform VM CPU", "type": "timeseries",
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"gridPos": { "h": 8, "w": 12, "x": 0, "y": 0 },
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"targets": [{ "expr": "100 - (avg(rate(node_cpu_seconds_total{job=\"platform-node\",mode=\"idle\"}[5m])) * 100)", "legendFormat": "CPU %" }]
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},
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{
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"id": 2, "title": "Lab Host VM CPU", "type": "timeseries",
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"gridPos": { "h": 8, "w": 12, "x": 12, "y": 0 },
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"targets": [{ "expr": "100 - (avg(rate(node_cpu_seconds_total{job=\"lab-host-node\",mode=\"idle\"}[5m])) * 100)", "legendFormat": "CPU %" }]
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},
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{
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"id": 3, "title": "Platform VM Memory Available", "type": "timeseries",
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"gridPos": { "h": 8, "w": 12, "x": 0, "y": 8 },
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"targets": [{ "expr": "node_memory_MemAvailable_bytes{job=\"platform-node\"}", "legendFormat": "Available" }]
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},
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{
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"id": 4, "title": "Lab Host VM Memory Available", "type": "timeseries",
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"gridPos": { "h": 8, "w": 12, "x": 12, "y": 8 },
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"targets": [{ "expr": "node_memory_MemAvailable_bytes{job=\"lab-host-node\"}", "legendFormat": "Available" }]
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},
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{
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"id": 5, "title": "Disk Usage (root filesystem, both hosts)", "type": "timeseries",
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"gridPos": { "h": 8, "w": 12, "x": 0, "y": 16 },
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"targets": [{ "expr": "1 - (node_filesystem_avail_bytes{mountpoint=\"/\"} / node_filesystem_size_bytes{mountpoint=\"/\"})", "legendFormat": "{{host}}" }]
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},
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{
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"id": 6, "title": "Postgres — Up / Connections", "type": "timeseries",
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"gridPos": { "h": 8, "w": 12, "x": 12, "y": 16 },
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"targets": [
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{ "expr": "pg_up", "legendFormat": "up" },
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{ "expr": "pg_stat_database_numbackends{datname=\"rootnode_platform\"}", "legendFormat": "connections" }
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]
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},
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{
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"id": 7, "title": "Running Docker Containers — Lab Host", "type": "timeseries",
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"gridPos": { "h": 8, "w": 12, "x": 0, "y": 24 },
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"targets": [{ "expr": "count(container_last_seen{name=~\"rootnode-lab-.*\"})", "legendFormat": "active labs (best-effort via cadvisor label match)" }]
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},
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{
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"id": 8, "title": "Uptime Probes (Gateway / Platform API / Provisioner)", "type": "timeseries",
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"gridPos": { "h": 8, "w": 12, "x": 12, "y": 24 },
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"targets": [{ "expr": "probe_success", "legendFormat": "{{job}}" }]
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}
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]
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}
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