====== Runbook: Grafana nadzorna plošča ======

<WRAP round info>
**Trajanje:** ~20 minut \\
**Vloga:** DevOps, SRE \\
**Predpogoj:** Grafana, Prometheus kot Datasource
</WRAP>

Vizualizacija metrik Gateway v Grafana.

----

===== Potek dela =====

<mermaid>
flowchart TD
    A[Začetek] --> B[Dodaj Datasource]
    B --> C[Uvozi nadzorno ploščo]
    C --> D[Prilagodi panele]
    D --> E[Konfiguriraj spremenljivke]
    E --> F[Shrani nadzorno ploščo]
    F --> G[Končano]

    style G fill:#e8f5e9
</mermaid>

----

===== 1. Prometheus Datasource =====

**Grafana UI:** Configuration -> Data Sources -> Add data source

<code yaml>
Name: Prometheus
Type: Prometheus
URL: http://prometheus:9090
Access: Server (default)
</code>

Ali prek Provisioning:

<code yaml>
# /etc/grafana/provisioning/datasources/prometheus.yaml
apiVersion: 1
datasources:
  - name: Prometheus
    type: prometheus
    access: proxy
    url: http://prometheus:9090
    isDefault: true
</code>

----

===== 2. JSON nadzorne plošče =====

**Uvoz nadzorne plošče:** Create -> Import -> Paste JSON

<code json>
{
  "title": "Data Gateway",
  "uid": "data-gateway",
  "timezone": "browser",
  "panels": [
    {
      "title": "Stopnja zahtev",
      "type": "timeseries",
      "gridPos": {"h": 8, "w": 12, "x": 0, "y": 0},
      "targets": [{
        "expr": "sum(rate(http_requests_total{job=\"data-gateway\"}[5m])) by (endpoint)",
        "legendFormat": "{{endpoint}}"
      }]
    },
    {
      "title": "Odzivni čas (p95)",
      "type": "timeseries",
      "gridPos": {"h": 8, "w": 12, "x": 12, "y": 0},
      "targets": [{
        "expr": "histogram_quantile(0.95, sum(rate(http_request_duration_seconds_bucket{job=\"data-gateway\"}[5m])) by (le))",
        "legendFormat": "p95"
      }]
    },
    {
      "title": "Stopnja napak",
      "type": "stat",
      "gridPos": {"h": 4, "w": 6, "x": 0, "y": 8},
      "targets": [{
        "expr": "sum(rate(http_requests_total{job=\"data-gateway\",status=~\"5..\"}[5m])) / sum(rate(http_requests_total{job=\"data-gateway\"}[5m])) * 100",
        "legendFormat": "Napake %"
      }],
      "fieldConfig": {
        "defaults": {
          "unit": "percent",
          "thresholds": {
            "steps": [
              {"color": "green", "value": null},
              {"color": "yellow", "value": 1},
              {"color": "red", "value": 5}
            ]
          }
        }
      }
    },
    {
      "title": "Poraba pomnilnika",
      "type": "gauge",
      "gridPos": {"h": 4, "w": 6, "x": 6, "y": 8},
      "targets": [{
        "expr": "process_resident_memory_bytes{job=\"data-gateway\"} / 1024 / 1024",
        "legendFormat": "Pomnilnik MB"
      }],
      "fieldConfig": {
        "defaults": {
          "unit": "decmbytes",
          "max": 512,
          "thresholds": {
            "steps": [
              {"color": "green", "value": null},
              {"color": "yellow", "value": 300},
              {"color": "red", "value": 450}
            ]
          }
        }
      }
    },
    {
      "title": "Aktivne zahteve",
      "type": "stat",
      "gridPos": {"h": 4, "w": 6, "x": 12, "y": 8},
      "targets": [{
        "expr": "http_requests_in_progress{job=\"data-gateway\"}",
        "legendFormat": "Aktivne"
      }]
    },
    {
      "title": "Čas delovanja",
      "type": "stat",
      "gridPos": {"h": 4, "w": 6, "x": 18, "y": 8},
      "targets": [{
        "expr": "time() - process_start_time_seconds{job=\"data-gateway\"}",
        "legendFormat": "Uptime"
      }],
      "fieldConfig": {
        "defaults": {"unit": "s"}
      }
    }
  ],
  "templating": {
    "list": [{
      "name": "instance",
      "type": "query",
      "query": "label_values(http_requests_total{job=\"data-gateway\"}, instance)",
      "multi": true,
      "includeAll": true
    }]
  },
  "refresh": "10s"
}
</code>

----

===== 3. Pomembni paneli =====

| Panel | Poizvedba | Namen |
|-------|-------|-------|
| Stopnja zahtev | ''sum(rate(http_requests_total[5m]))'' | Prepustnost |
| Odzivni čas | ''histogram_quantile(0.95, ...)'' | Zakasnitev |
| Stopnja napak | ''...status=~"5.."... * 100'' | Kvota napak |
| Pomnilnik | ''process_resident_memory_bytes'' | Poraba RAM |
| Procesor | ''rate(process_cpu_seconds_total[5m])'' | Obremenitev procesorja |
| Aktivne zahteve | ''http_requests_in_progress'' | Vzporednost |

----

===== 4. Spremenljivke nadzorne plošče =====

Za nastavitve z več instancami:

<code>
Name: instance
Type: Query
Query: label_values(http_requests_total{job="data-gateway"}, instance)
Multi-value: enabled
Include All: enabled
</code>

Nato v poizvedbah: ''http_requests_total{instance=~"$instance"}''

----

===== 5. Kontrolni seznam =====

| # | Točka preverjanja | V |
|---|-----------|---|
| 1 | Prometheus Datasource konfiguriran | |
| 2 | Nadzorna plošča uvožena | |
| 3 | Metrike se prikazujejo | |
| 4 | Spremenljivke delujejo | |
| 5 | Nadzorna plošča shranjena | |

----

===== Odpravljanje težav =====

| Težava | Vzrok | Rešitev |
|---------|---------|--------|
| ''No data'' | Napačno ime opravila | Preveri ''job="data-gateway"'' |
| ''Datasource error'' | Prometheus ni dosegljiv | Preveri URL |
| Prazni grafi | Ni prometa | Uporabi Gateway |
| Napačne vrednosti | Napačna poizvedba | Preveri PromQL sintakso |

----

===== Izvoz nadzorne plošče =====

<code bash>
# Izvozi nadzorno ploščo kot JSON
curl -s -H "Authorization: Bearer $GRAFANA_TOKEN" \
    "http://grafana:3000/api/dashboards/uid/data-gateway" | jq '.dashboard' > dashboard.json

# Uvozi nadzorno ploščo
curl -X POST -H "Content-Type: application/json" \
    -H "Authorization: Bearer $GRAFANA_TOKEN" \
    -d @dashboard.json \
    "http://grafana:3000/api/dashboards/db"
</code>

----

===== Povezani Runbooks =====

  * [[.:prometheus|Prometheus]] - Vir podatkov
  * [[.:alerting|Opozarjanje]] - Obvestila
  * [[..:tagesgeschaeft:health-check|Health Check]] - Ročno preverjanje

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<< [[.:prometheus|<- Prometheus]] | [[.:alerting|-> Opozarjanje]] >>

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//Wolfgang van der Stille @ EMSR DATA d.o.o. - Data Gateway Professional//

{{tag>operator runbook grafana dashboard vizualizacija}}