throttling, abuse-protection & logging/monitoring pass

docker/grafana/dashboards/django-logs.json

@@ -0,0 +1,63 @@
+{
+  "title": "Tadrisino Django Logs",
+  "uid": "tadrisino-django-logs",
+  "timezone": "browser",
+  "schemaVersion": 39,
+  "version": 1,
+  "time": { "from": "now-6h", "to": "now" },
+  "refresh": "10s",
+  "templating": {
+    "list": [
+      {
+        "name": "level",
+        "type": "query",
+        "datasource": { "type": "loki", "uid": "Loki" },
+        "query": "label_values({job=\"django\"}, level)",
+        "refresh": 2,
+        "includeAll": true,
+        "multi": true,
+        "current": { "text": "All", "value": "$__all" }
+      },
+      {
+        "name": "search",
+        "type": "textbox",
+        "label": "Search text",
+        "current": { "text": "", "value": "" }
+      }
+    ]
+  },
+  "panels": [
+    {
+      "id": 1,
+      "title": "Log volume by level",
+      "type": "timeseries",
+      "datasource": { "type": "loki", "uid": "Loki" },
+      "gridPos": { "h": 8, "w": 24, "x": 0, "y": 0 },
+      "targets": [
+        {
+          "expr": "sum by (level) (count_over_time({job=\"django\", level=~\"$level\"} |= `$search` [1m]))",
+          "refId": "A"
+        }
+      ]
+    },
+    {
+      "id": 2,
+      "title": "Django application logs",
+      "type": "logs",
+      "datasource": { "type": "loki", "uid": "Loki" },
+      "gridPos": { "h": 16, "w": 24, "x": 0, "y": 8 },
+      "options": {
+        "showTime": true,
+        "showLabels": true,
+        "wrapLogMessage": true,
+        "sortOrder": "Descending"
+      },
+      "targets": [
+        {
+          "expr": "{job=\"django\", level=~\"$level\"} |= `$search`",
+          "refId": "A"
+        }
+      ]
+    }
+  ]
+}

docker/grafana/provisioning/dashboards/dashboard.yml

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+# به Grafana می‌گه داشبوردهای JSON رو از /var/lib/grafana/dashboards
+# (که در docker-compose.yml به docker/grafana/dashboards mount شده) بخونه.
+apiVersion: 1
+
+providers:
+  - name: Django Logs
+    orgId: 1
+    folder: ""
+    type: file
+    disableDeletion: false
+    updateIntervalSeconds: 30
+    options:
+      path: /var/lib/grafana/dashboards

docker/grafana/provisioning/datasources/datasource.yml

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+# Loki رو به‌صورتِ خودکار به‌عنوانِ دیتاسورسِ پیش‌فرضِ Grafana اضافه می‌کنه
+# (نیازی به تنظیمِ دستی در UI نیست).
+apiVersion: 1
+
+datasources:
+  - name: Loki
+    type: loki
+    access: proxy
+    url: http://loki:3100
+    # UID رو صریح ست می‌کنیم چون داشبورد (django-logs.json) با همین UID
+    # (uid: "Loki") به این دیتاسورس ارجاع می‌ده؛ بدونِ این، Grafana خودش
+    # یک UID تصادفی تولید می‌کرد و ارجاعِ داشبورد resolve نمی‌شد.
+    uid: Loki
+    isDefault: true
+    editable: true