完善中央与边缘部署、远程写入与监控文档

- 增加中央与边缘完整配置和部署脚本
- 引入 VictoriaMetrics 数据源与 remote_write 故障排查说明
- 新增 edge-agent 配置脚本、ONVIF 自建 exporter 与 ping 监控示例

Co-authored-by: Cursor <cursoragent@cursor.com>

central-server/prometheus.yml

@@ -0,0 +1,52 @@
+global:
+  scrape_interval: 15s
+  evaluation_interval: 15s
+  external_labels:
+    cluster: 'central-monitoring'
+
+# 远程写入配置 - 接收来自边缘节点的数据
+remote_write:
+  - url: http://victoria-metrics:8428/api/v1/write
+    queue_config:
+      max_samples_per_send: 10000
+      capacity: 20000
+      max_shards: 10
+
+# 抓取配置 - 主要抓取本地服务
+scrape_configs:
+  # 抓取中央Prometheus自身
+  - job_name: 'prometheus-central'
+    scrape_interval: 15s
+    static_configs:
+      - targets: ['prometheus-central:9090']
+
+  # 抓取VictoriaMetrics (VictoriaMetrics 提供 /metrics 端点)
+  - job_name: 'victoria-metrics'
+    scrape_interval: 15s
+    metrics_path: '/metrics'
+    static_configs:
+      - targets: ['victoria-metrics:8428']
+
+  # 抓取Alertmanager
+  - job_name: 'alertmanager'
+    scrape_interval: 15s
+    static_configs:
+      - targets: ['alertmanager:9093']
+
+  # 抓取Grafana (需要启用 metrics 功能)
+  - job_name: 'grafana'
+    scrape_interval: 15s
+    metrics_path: '/metrics'
+    static_configs:
+      - targets: ['grafana:3000']
+
+# 告警规则配置
+rule_files:
+  - "alert_rules.yml"
+
+# Alertmanager配置
+alerting:
+  alertmanagers:
+    - static_configs:
+        - targets:
+          - alertmanager:9093