add tempo (tracing), pyroscope (profiling), node exporter (metriche)

docker-compose/prometheus.yml

@@ -17,5 +17,13 @@ scrape_configs:
     metrics_path: '/metrics'
     static_configs:
       # Raggiunge il Collector usando il suo nome di servizio Docker
-      - targets: ['otel-collector:8889'] 
+      - targets: ['otel-collector:8889']
+
+  # Job 3: Node Exporter - Metriche del sistema host
+  - job_name: 'node-exporter'
+    static_configs:
+      - targets: ['node-exporter:9100']
+        labels:
+          instance: 'docker-host'
+          environment: 'production'