dht needs to be run in host mode

docker-compose.yml

@@ -39,8 +39,9 @@ services:
     command: --metrics_port 7777
     container_name: dht_node_exporter
     restart: unless-stopped
+    network_mode: "host"
     ports:
-      - 4444:4444
+      - 4444:4444/udp
 
 #  node-exporter:
 #    image: prom/node-exporter:latest

prometheus.yml

@@ -34,7 +34,7 @@ scrape_configs:
   scheme: http
   static_configs:
   - targets:
-    - dht_node_exporter:7777
+    - host.docker.internal:7777
 
 - job_name: lbcd
   metrics_path: /