Monitoring Your Home Network with Raspberry Pi and Grafana

Build a dashboard showing bandwidth, device status, latency, and uptime.

Stack

• Telegraf — collects metrics
• InfluxDB — time-series database
• Grafana — dashboards

Install InfluxDB and Telegraf

# Add InfluxData repository per their docs at docs.influxdata.com
sudo apt install influxdb2 telegraf -y
sudo systemctl enable influxdb telegraf

Install Grafana

# ARM package from grafana.com/grafana/download?platform=arm
sudo dpkg -i grafana-rpi_[version]_armhf.deb
sudo systemctl enable --now grafana-server

Configure Telegraf for Network Monitoring

Edit /etc/telegraf/telegraf.conf:

[[inputs.ping]]
  urls = ["8.8.8.8", "192.168.1.1"]
  count = 4
  interval = "30s"

[[inputs.net]]
  interfaces = ["eth0"]

[[inputs.netstat]]

Grafana Setup

1. Access at http://raspberrypi.local:3000
2. Add InfluxDB as data source
3. Import Dashboard ID 928 (Telegraf system metrics) or build custom

Useful Panels

• Ping latency to gateway and internet
• Network throughput over time
• Device online status (green/red)
• Interface error counts