Add the secret sauce

Dockerfile

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+FROM alpine AS build
+
+RUN apk add --no-cache \
+    smartmontools \
+    jq \
+    nvme-cli \
+    bash \
+    hwids-pci
+
+COPY node-exporter-textfile-collector-scripts /scripts
+COPY entrypoint.sh /entrypoint.sh
+COPY bridge.sh /scripts/
+RUN chmod +x /scripts/bridge.sh
+RUN chmod +x /entrypoint.sh
+ENTRYPOINT /entrypoint.sh

README.md

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+# Background
+
+Ubuntu packages are outdated and getting textfile collectors working is a hassle.
+This is the only sane option for running Prometheus Node Exporter with textfile collectors
+such as SMART metrics, NVMe metrics etc.
+
+
+# Deploying
+
+See supplied `docker-compose.yml`
+
+
+# Security
+
+Don't forget to add some `iptables` rules for protecting the node exporter endpoint.
+
+![Still waiting for bearer token](https://imgflip.com/i/5d21t5)

bridge.sh

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+
+echo "# HELP node_bridge_members How many member interfaces bridge has"
+echo "# TYPE node_bridge_members gauge"
+
+for BRIDGE in $(ls /sys/devices/virtual/net); do
+  if [ -e /sys/devices/virtual/net/$BRIDGE/brif ]; then
+    echo node_bridge_members{bridge=\"$BRIDGE\"} $(/bin/ls -1 /sys/devices/virtual/net/$BRIDGE/brif 2>/dev/null | wc -l)
+  fi
+done

docker-compose.yml

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+version: '3.7'
+
+services:
+  app:
+    restart: always
+    image: quay.io/prometheus/node-exporter:latest
+    command:
+      - --path.rootfs=/host
+      - --collector.textfile.directory=/host/run/node-exporter
+    network_mode: host
+    pid: host
+    restart: always
+    volumes:
+      - '/:/host:ro,rslave'
+
+  collectors:
+    image: kspaceee:prometheus-textfile-collectors
+    restart: always
+    network_mode: none
+    privileged: true
+    volumes:
+      - '/dev:/dev'
+      - '/sys:/sys:ro,rslave'
+      - '/run/node-exporter:/run/node-exporter'
+

entrypoint.sh

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+#!/bin/bash
+while true; do
+  /scripts/smartmon.sh > /run/node-exporter/smart.prom
+  /scripts/nvme_metrics.sh > /run/node-exporter/nvme.prom
+  /scripts/bridge.sh > /run/node-exporter/bridge.prom
+  /scripts/ipmitool > /run/node-exporter/impitool.prom
+  sleep 15
+done