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>

edge-agent/prometheus-edge/prometheus.yml.template

@@ -0,0 +1,45 @@
+global:
+  scrape_interval: 120s
+  evaluation_interval: 120s
+  external_labels:
+    region: workernode_1 # 设置一个唯一边缘节点名称
+
+remote_write:
+  - url: http://${CENTRAL_SERVER_HOST}:${CENTRAL_SERVER_PORT}/api/v1/write
+    queue_config:
+      max_samples_per_send: 5000
+      capacity: 5000
+      max_shards: 5
+
+scrape_configs:
+  - job_name: 'onvif-devices'
+    scrape_interval: 120s
+    file_sd_configs:
+      - files: ['/etc/prometheus/onvif-targets.json']
+        refresh_interval: 5m
+    metrics_path: /metrics
+    static_configs:
+      - targets: ['onvif-exporter:9600']
+
+  - job_name: 'network-ping'
+    scrape_interval: 300s
+    file_sd_configs:
+      - files: ['/etc/prometheus/ping-targets.json']
+        refresh_interval: 5m
+    metrics_path: /probe
+    params:
+      module: [icmp]
+    static_configs:
+      - targets: ['blackbox-exporter:9115']
+    relabel_configs:
+      - source_labels: [__address__]
+        target_label: __param_target
+      - source_labels: [__param_target]
+        target_label: instance
+      - target_label: __address__
+        replacement: blackbox-exporter:9115
+
+  - job_name: 'prometheus-edge'
+    scrape_interval: 60s
+    static_configs:
+      - targets: ['localhost:9090']