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tomato-grafana

Scripts to display metrics from routers running FreshTomato. Developed on Netgear R7000.

Dashboard Preview

Based on dd-wrt-grafana by Trevor Dodds (https://grafana.com/grafana/dashboards/950), updated for influxdb and freshtomato.

Requirements

  • Router running FreshTomato (tested on 2021.2)
  • Server running Grafana
  • Server running InfluxDB

Installation

Enable auth on InfluxDB (on my apt-based debian install, this was at /etc/influxdb/influxdb.conf) and configure a user and password. The router scripts will expect auth for depositing data.

Set up a blank InfluxDB database for storage (after installing influxdb-client, auth into influx from the command line, and run "CREATE DATABASE tomato", or whatever you would like to call it).

Connect Grafana to InfluxDB as a data source using the same username and password you set up for influx auth.

On to the router. Enable JFFS support on Tomato under Administration -> JFFS.

Upload all shell scripts to /jffs/tomato-grafana/. Modify the IP, port, password, and username of your influxdb server in variables.sh. Also add any additional mount points you may want to monitor in this file as well, space-delimited. Scripts do not have to be executable.

For speedtest results, download the Ookla ARM CLI tool from https://install.speedtest.net/app/cli/ookla-speedtest-1.0.0-arm-linux.tgz and place its contents into a folder called /jffs/speedtest/. The core speedtest binary should be executable.

Add the following three commands under Administration -> Scheduler as custom cron jobs:

sh /jffs/tomato-grafana/collector.sh >/dev/null 2>&1
sh /jffs/tomato-grafana/collector20.sh >/dev/null 2>&1
sh /jffs/tomato-grafana/collector40.sh >/dev/null 2>&1

These should all run every 1 minute on every day of the week. The collectors will now run every 20 seconds. Additionally, add this cron for the speedtest:

sh /jffs/tomato-grafana/speedTest.sh >/dev/null 2>&1

Run this every 30 minutes, or as often as you would like results recorded.

Import the Grafana dashboard via json file or from this dashboard code: https://grafana.com/grafana/dashboards/14237

Enjoy!