feat: 그라파나 대시보드 코드화 및 단일 서버 모니터링 환경 구축 (#216)

Author: Ji-minhyeok

docker-compose-monitoring.yml

@@ -26,6 +26,8 @@ services:
       - "3000:3000"
     volumes:
       - ./grafana-data:/var/lib/grafana
+      - ./prometheus-grafana/grafana/provisioning:/etc/grafana/provisioning
+      - ./prometheus-grafana/grafana/dashboards:/var/lib/grafana/dashboards:ro # 읽기 전용 마운트
     environment:
       - GF_SECURITY_ADMIN_PASSWORD=admin
     networks:

prometheus-grafana/grafana/dashboards/baseline-dashboard.json

@@ -0,0 +1,133 @@
+{
+  "annotations": {
+    "list": [
+      {
+        "builtIn": 1,
+        "datasource": {
+          "type": "grafana",
+          "uid": "-- Grafana --"
+        },
+        "enable": true,
+        "hide": true,
+        "iconColor": "rgba(0, 211, 255, 1)",
+        "name": "Annotations & Alerts",
+        "type": "dashboard"
+      }
+    ]
+  },
+  "editable": true,
+  "fiscalYearStartMonth": 0,
+  "graphTooltip": 0,
+  "id": null,
+  "links": [],
+  "panels": [
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "prometheus-default"
+      },
+      "description": "독립 서버(Baseline)의 스레드 점유 상태를 집중 모니터링합니다.",
+      "fieldConfig": {
+        "defaults": {
+          "color": { "mode": "palette-classic" },
+          "custom": {
+            "axisPlacement": "auto",
+            "drawStyle": "line",
+            "fillOpacity": 10,
+            "lineInterpolation": "linear",
+            "lineWidth": 2,
+            "pointSize": 5,
+            "showPoints": "never"
+          },
+          "mappings": [],
+          "min": 0,
+          "unit": "short"
+        }
+      },
+      "gridPos": { "h": 8, "w": 12, "x": 0, "y": 0 },
+      "id": 1,
+      "options": {
+        "legend": { "calcs": ["lastNotNull", "max"], "displayMode": "table", "placement": "bottom" },
+        "tooltip": { "mode": "multi" }
+      },
+      "pluginVersion": "11.5.2",
+      "targets": [
+        {
+          "expr": "tomcat_threads_busy_threads{env=\"baseline\"}",
+          "legendFormat": "Busy Threads",
+          "refId": "A"
+        },
+        {
+          "expr": "tomcat_threads_config_max_threads{env=\"baseline\"}",
+          "legendFormat": "Max Threads",
+          "refId": "B"
+        }
+      ],
+      "title": "[Baseline] Tomcat Thread Status",
+      "type": "timeseries"
+    },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "prometheus-default"
+      },
+      "description": "DB 커넥션 풀 고갈 여부를 확인합니다. Pending 발생 시 주의가 필요합니다.",
+      "fieldConfig": {
+        "defaults": {
+          "color": { "mode": "palette-classic" },
+          "custom": { "lineWidth": 2, "fillOpacity": 10 },
+          "unit": "short"
+        }
+      },
+      "gridPos": { "h": 8, "w": 12, "x": 12, "y": 0 },
+      "id": 2,
+      "options": {
+        "legend": { "calcs": ["lastNotNull", "max"], "displayMode": "table", "placement": "bottom" }
+      },
+      "targets": [
+        {
+          "expr": "hikaricp_connections_active{env=\"baseline\"}",
+          "legendFormat": "Active Connections",
+          "refId": "A"
+        },
+        {
+          "expr": "hikaricp_connections_pending{env=\"baseline\"}",
+          "legendFormat": "Pending Connections",
+          "refId": "B"
+        }
+      ],
+      "title": "[Baseline] HikariCP Connection Pool",
+      "type": "timeseries"
+    },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "prometheus-default"
+      },
+      "fieldConfig": {
+        "defaults": {
+          "color": { "mode": "palette-classic" },
+          "custom": { "lineWidth": 2 },
+          "unit": "s"
+        }
+      },
+      "gridPos": { "h": 8, "w": 24, "x": 0, "y": 8 },
+      "id": 3,
+      "targets": [
+        {
+          "expr": "rate(http_server_requests_seconds_sum{env=\"baseline\"}[1m]) / rate(http_server_requests_seconds_count{env=\"baseline\"}[1m])",
+          "legendFormat": "{{uri}}",
+          "refId": "A"
+        }
+      ],
+      "title": "[Baseline] Average Response Time by URI",
+      "type": "timeseries"
+    }
+  ],
+  "refresh": "5s",
+  "schemaVersion": 40,
+  "time": { "from": "now-15m", "to": "now" },
+  "title": "TrainUs Baseline Dashboard (Single Node)",
+  "uid": "trainus-baseline-v1",
+  "version": 1
+}