add main nodexporter

docker-compose.yml

@@ -67,3 +67,22 @@ services:
     image: stefanwalther/speedtest-exporter
     networks:
       - back-tier
+
+  nodeexp:
+    privileged: true
+    image: prom/node-exporter
+    volumes:
+      - /proc:/host/proc:ro
+      - /sys:/host/sys:ro
+      - /:/rootfs:ro
+    ports:
+      - 9100:9100
+    restart: always
+    command:
+      - '--path.procfs=/host/proc'
+      - '--path.sysfs=/host/sys'
+      - --collector.filesystem.ignored-mount-points
+      - "^/(sys|proc|dev|host|etc|rootfs/var/lib/docker/containers|rootfs/var/lib/docker/overlay2|rootfs/run/docker/netns|rootfs/var/lib/docker/aufs)($$|/)"
+    networks:
+      - back-tier
+

prometheus/prometheus.yml

@@ -51,3 +51,7 @@ scrape_configs:
         target_label: instance
       - target_label: __address__
         replacement: ping:9115  # The blackbox exporter's real hostname:port.
+
+  - job_name: 'nodeexp'
+    static_configs:
+    - targets: ['nodeexp:9100']