feat(llm-inference): Phase 7 — Prometheus monitoring + Grafana dashboard
- Phase 7 task file: monitoring.yml
- node_exporter (port 9100) via apt, systemd managed
- nvidia_gpu_exporter v1.2.2 (port 9835) — GPU util, VRAM, temp, power
- Patches kube-prometheus additionalScrapeConfigs secret with 3 new jobs:
node-astro-orbiter, gpu-astro-orbiter, vllm-astro-orbiter
- Deploys Grafana dashboard ConfigMap via kubectl apply
- Grafana dashboard (11 panels):
- Row 1: GPU util %, VRAM used, GPU temp gauge
- Row 2: GPU power draw, vLLM token throughput, request queue depth
- Row 3: vLLM e2e latency p50/p95/p99, KV cache utilization %
- Row 4: System CPU %, memory, root disk gauge
- defaults/main.yml: llm_gpu_exporter_version, llm_gpu_exporter_port
- handlers/main.yml: restart nvidia-gpu-exporter
This commit is contained in:
Hermes Agent service account
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apiVersion: v1
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kind: ConfigMap
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metadata:
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name: grafana-llm-inference-dashboard
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namespace: monitoring
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labels:
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grafana_dashboard: "1"
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data:
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llm-inference.json: |
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{
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"title": "LLM Inference — astro-orbiter",
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"uid": "llm-astro-orbiter",
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"timezone": "browser",
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"refresh": "30s",
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"schemaVersion": 38,
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"tags": ["llm", "gpu", "vllm", "astro-orbiter"],
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"time": { "from": "now-1h", "to": "now" },
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"templating": {
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"list": [
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{
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"name": "instance",
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"type": "constant",
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"label": "Host",
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"query": "{{ hostvars['astro-orbiter']['ansible_host'] }}",
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"hide": 0
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}
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]
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},
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"panels": [
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{
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"id": 1,
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"title": "GPU Utilization %",
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"type": "timeseries",
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"gridPos": { "x": 0, "y": 0, "w": 8, "h": 8 },
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"fieldConfig": {
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"defaults": {
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"unit": "percent",
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"min": 0, "max": 100,
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"color": { "mode": "palette-classic" },
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"thresholds": {
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"mode": "absolute",
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"steps": [
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{ "color": "green", "value": null },
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{ "color": "yellow", "value": 70 },
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{ "color": "red", "value": 90 }
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]
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}
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}
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},
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"targets": [
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{
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"expr": "nvidia_smi_utilization_gpu_ratio{hostname=\"astro-orbiter\"} * 100",
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"legendFormat": "GPU Util"
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}
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]
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},
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{
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"id": 2,
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"title": "GPU VRAM Used",
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"type": "timeseries",
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"gridPos": { "x": 8, "y": 0, "w": 8, "h": 8 },
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"fieldConfig": {
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"defaults": {
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"unit": "bytes",
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"color": { "mode": "palette-classic" }
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}
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},
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"targets": [
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{
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"expr": "nvidia_smi_memory_used_bytes{hostname=\"astro-orbiter\"}",
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"legendFormat": "VRAM Used"
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},
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{
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"expr": "nvidia_smi_memory_total_bytes{hostname=\"astro-orbiter\"}",
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"legendFormat": "VRAM Total"
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}
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]
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},
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{
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"id": 3,
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"title": "GPU Temperature",
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"type": "gauge",
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"gridPos": { "x": 16, "y": 0, "w": 8, "h": 8 },
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"fieldConfig": {
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"defaults": {
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"unit": "celsius",
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"min": 0, "max": 100,
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"thresholds": {
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"mode": "absolute",
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"steps": [
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{ "color": "green", "value": null },
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{ "color": "yellow", "value": 70 },
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{ "color": "red", "value": 85 }
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]
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}
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}
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},
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"targets": [
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{
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"expr": "nvidia_smi_temperature_gpu{hostname=\"astro-orbiter\"}",
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"legendFormat": "GPU Temp"
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}
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]
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},
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{
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"id": 4,
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"title": "GPU Power Draw",
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"type": "timeseries",
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"gridPos": { "x": 0, "y": 8, "w": 8, "h": 8 },
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"fieldConfig": {
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"defaults": {
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"unit": "watt",
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"color": { "mode": "palette-classic" }
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}
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},
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"targets": [
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{
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"expr": "nvidia_smi_power_draw_watts{hostname=\"astro-orbiter\"}",
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"legendFormat": "Power Draw"
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},
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{
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"expr": "nvidia_smi_power_limit_watts{hostname=\"astro-orbiter\"}",
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"legendFormat": "Power Limit"
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}
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]
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},
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{
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"id": 5,
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"title": "vLLM — Token Throughput",
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"type": "timeseries",
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"gridPos": { "x": 8, "y": 8, "w": 8, "h": 8 },
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"fieldConfig": {
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"defaults": {
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"unit": "reqps",
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"color": { "mode": "palette-classic" }
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}
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},
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"targets": [
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{
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"expr": "rate(vllm:generation_tokens_total{hostname=\"astro-orbiter\"}[1m])",
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"legendFormat": "Tokens/s (gen)"
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},
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{
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"expr": "rate(vllm:prompt_tokens_total{hostname=\"astro-orbiter\"}[1m])",
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"legendFormat": "Tokens/s (prompt)"
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}
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]
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},
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{
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"id": 6,
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"title": "vLLM — Request Queue Depth",
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"type": "timeseries",
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"gridPos": { "x": 16, "y": 8, "w": 8, "h": 8 },
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"fieldConfig": {
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"defaults": {
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"unit": "short",
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"color": { "mode": "palette-classic" }
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}
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},
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"targets": [
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{
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"expr": "vllm:num_requests_running{hostname=\"astro-orbiter\"}",
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"legendFormat": "Running"
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},
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{
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"expr": "vllm:num_requests_waiting{hostname=\"astro-orbiter\"}",
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"legendFormat": "Waiting"
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},
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{
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"expr": "vllm:num_requests_swapped{hostname=\"astro-orbiter\"}",
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"legendFormat": "Swapped"
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}
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]
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},
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{
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"id": 7,
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"title": "vLLM — E2E Request Latency (p50/p95/p99)",
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"type": "timeseries",
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"gridPos": { "x": 0, "y": 16, "w": 12, "h": 8 },
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"fieldConfig": {
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"defaults": {
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"unit": "s",
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"color": { "mode": "palette-classic" }
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}
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},
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"targets": [
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{
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"expr": "histogram_quantile(0.50, rate(vllm:e2e_request_latency_seconds_bucket{hostname=\"astro-orbiter\"}[5m]))",
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"legendFormat": "p50"
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},
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{
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"expr": "histogram_quantile(0.95, rate(vllm:e2e_request_latency_seconds_bucket{hostname=\"astro-orbiter\"}[5m]))",
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"legendFormat": "p95"
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},
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{
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"expr": "histogram_quantile(0.99, rate(vllm:e2e_request_latency_seconds_bucket{hostname=\"astro-orbiter\"}[5m]))",
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"legendFormat": "p99"
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}
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]
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},
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{
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"id": 8,
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"title": "vLLM — KV Cache Utilization %",
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"type": "timeseries",
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"gridPos": { "x": 12, "y": 16, "w": 12, "h": 8 },
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"fieldConfig": {
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"defaults": {
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"unit": "percent",
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"min": 0, "max": 100,
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"thresholds": {
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"mode": "absolute",
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"steps": [
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{ "color": "green", "value": null },
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{ "color": "yellow", "value": 75 },
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{ "color": "red", "value": 90 }
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]
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}
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}
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},
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"targets": [
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{
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"expr": "vllm:gpu_cache_usage_perc{hostname=\"astro-orbiter\"} * 100",
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"legendFormat": "KV Cache %"
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}
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]
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},
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{
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"id": 9,
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"title": "System — CPU Usage %",
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"type": "timeseries",
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"gridPos": { "x": 0, "y": 24, "w": 8, "h": 7 },
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"fieldConfig": {
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"defaults": {
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"unit": "percent",
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"min": 0, "max": 100
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}
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},
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"targets": [
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{
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"expr": "100 - (avg by(instance) (rate(node_cpu_seconds_total{mode=\"idle\",instance=~\"{{ hostvars['astro-orbiter']['ansible_host'] }}:.*\"}[1m])) * 100)",
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"legendFormat": "CPU Used"
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}
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]
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},
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{
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"id": 10,
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"title": "System — Memory Usage",
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"type": "timeseries",
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"gridPos": { "x": 8, "y": 24, "w": 8, "h": 7 },
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"fieldConfig": {
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"defaults": {
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"unit": "bytes"
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}
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},
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"targets": [
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{
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"expr": "node_memory_MemTotal_bytes{instance=~\"{{ hostvars['astro-orbiter']['ansible_host'] }}:.*\"} - node_memory_MemAvailable_bytes{instance=~\"{{ hostvars['astro-orbiter']['ansible_host'] }}:.*\"}",
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"legendFormat": "Used"
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},
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{
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"expr": "node_memory_MemTotal_bytes{instance=~\"{{ hostvars['astro-orbiter']['ansible_host'] }}:.*\"}",
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"legendFormat": "Total"
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}
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]
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},
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{
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"id": 11,
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"title": "System — Disk Usage (root)",
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"type": "gauge",
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"gridPos": { "x": 16, "y": 24, "w": 8, "h": 7 },
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"fieldConfig": {
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"defaults": {
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"unit": "percentunit",
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"min": 0, "max": 1,
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"thresholds": {
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"mode": "absolute",
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"steps": [
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{ "color": "green", "value": null },
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{ "color": "yellow", "value": 0.75 },
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{ "color": "red", "value": 0.90 }
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]
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}
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}
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},
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"targets": [
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{
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"expr": "1 - (node_filesystem_avail_bytes{instance=~\"{{ hostvars['astro-orbiter']['ansible_host'] }}:.*\",mountpoint=\"/\"} / node_filesystem_size_bytes{instance=~\"{{ hostvars['astro-orbiter']['ansible_host'] }}:.*\",mountpoint=\"/\"})",
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"legendFormat": "Root disk"
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}
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]
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}
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]
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}
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