Session 2026-05-06: QuantumLeap+CrateDB, Telegraf debug, MapStore GeoServer fix

promtail-config.yml

@@ -0,0 +1,38 @@
+# Promtail configuration — Smart City Digital Twin
+# Collects Docker logs and sends to Loki
+
+server:
+  http_listen_port: 9080
+  grpc_listen_port: 0
+
+positions:
+  filename: /tmp/promtail/positions.yaml
+
+clients:
+  - url: http://smart-city-loki:3100/loki/api/v1/push
+
+scrape_configs:
+  # Collect logs from all Docker containers
+  - job_name: docker
+    docker_sd_configs:
+      - host: unix:///var/run/docker.sock
+        refresh_interval: 5s
+    relabel_configs:
+      # Keep only Smart City containers
+      - source_labels: [__meta_docker_container_name]
+        regex: 'smart-city-.*'
+        action: keep
+      # Add container name as label
+      - source_labels: [__meta_docker_container_name]
+        target_label: container
+      - source_labels: [__meta_docker_container_name]
+        target_label: job
+        replacement: ${1}
+      # Add image as label
+      - source_labels: [__meta_docker_container_image]
+        target_label: image
+      # Add service label from container name
+      - source_labels: [__meta_docker_container_name]
+        regex: 'smart-city-(.*)'
+        target_label: service
+        replacement: '${1}'