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Python based DOCSIS modem performance metrics collection tool using the built-in HTML portal of common devices.

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andresp/cablemodem-status

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Cable Modem Status Retriever

This script retrieves channel information from a cable modem and stores time series data to an InfluxDB as well as Event Logs in Loki. The data can be visualized using tools such as Grafana.

Supported Modems

  • Motorola MB8600
  • Netgear CM2000
  • Technicolor XB7
  • Arris International Touchstone TG3492, configured as Giga Connect Box for UPC.CH Switzerland

Dependencies

  • Python3
  • An InfluxDB 2.0 database
  • Loki for Event Log collection

Installation

Build and install with pip

pip3 install -e .

Configuration

Edit configuration.ini and fill in your information for the InfluxDB and the modem.

Valid strings for ModemType:

  • MotorolaMB8600
  • NetgearCM2000
  • TechnicolorXB7
  • TouchstoneTG3492UPCCH

Executing the script

Test the script by executing it manually and verify it completes without error messages.

retriever

Development / Contributing

Install all dev dependencies: pip install .[dev] .

Run unittests: pytest tests

Set up recurring execution

Create a cron job (executes every 2 minutes):

*/2 * * * * /usr/local/bin/retriever 2>&1 > /dev/null

Docker

You can build your own image by running:

docker build -f "Dockerfile" -t cablemodemstatus:latest .

Once built, create a directory on your host for your configuration.ini file, such as /opt/cablemodemstatus. Then start a container referring to the configuration directory and mapping it to /app/data:

docker run -d --name cablemodemstatus --restart unless-stopped -v /opt/cablemodemstatus:/app/data cablemodemstatus:latest

You can monitor the container's status by running:

docker logs -f cablemodemstatus

Docker compose

If you are using Docker Compose, building and installation is even easier.

Assuming your configuration file is

/home/pi/config/configuration.ini

then all you need to add to your compose.yaml file is this:

  cablemodem_exporter:
     build: https://github.com/andresp/cablemodem-status.git
     command: retriever
     volumes:
       - /home/pi/config:/app/data:ro

Todo

  • Implement modules for additional modems:
    • Arris S33
    • Arris SB8200
  • Provide a Grafana Dashboard to visualize collected data
  • Provide turnkey instructions to set up InfluxDB, Grafana and retrieval script
  • Create Prometheus storage writer