Add Pi-hole with AdGuard DOH/DOT integration, reorganize swarm stacks, add DNS/n8n docs

services/swarm/stacks/monitoring/node-exporter-stack.yml

@@ -0,0 +1,38 @@
+version: '3.8'
+
+networks:
+  monitoring:
+    external: true
+
+services:
+  node-exporter:
+    image: prom/node-exporter:v1.8.2
+    command:
+      - '--path.procfs=/host/proc'
+      - '--path.rootfs=/rootfs'
+      - '--path.sysfs=/host/sys'
+      - '--collector.filesystem.mount-points-exclude=^/(sys|proc|dev|host|etc)($$|/)'
+    volumes:
+      - '/proc:/host/proc:ro'
+      - '/sys:/host/sys:ro'
+      - '/:/rootfs:ro,rslave'
+    networks:
+      - monitoring
+    deploy:
+      mode: global
+      resources:
+        limits:
+          memory: 128M
+          cpus: '0.2'
+        reservations:
+          memory: 32M
+          cpus: '0.05'
+      restart_policy:
+        condition: on-failure
+        delay: 5s
+        max_attempts: 3
+    logging:
+      driver: "json-file"
+      options:
+        max-size: "5m"
+        max-file: "2"