A Docker Stack which Monitors your home network

Here's a quick start to stand-up a Docker Prometheus stack containing Prometheus, Grafana with blackbox-exporter and speedtest-exporter to collect and graph home network connections and speed.

Pre-requisites

Before we get started installing the Prometheus stack. Ensure you install the latest version of docker and docker-compose on your Docker host machine. This has been tested with Docker for Mac and Synology and it works.

Quick Start

If on Mac run this:

git clone https://github.com/maxandersen/internet-monitoring && cd internet-monitoring/prometheus && docker-compose up && open http://localhost:3030/d/o9mIe_Aik/internet-connection

otherwise:

git clone https://github.com/maxandersen/internet-monitoring
cd internet-monitoring/prometheus
docker-compose up

Goto http://localhost:3030/d/o9mIe_Aik/internet-connection (change localhost to your docker host ip/name).

Configuration

To change what hosts you ping you change the targets section in /prometheus/pinghosts.yml file.

For speedtest the only relevant configuration is how often you want the check to happen. It is at 5 minutes by default which might be too much if you have limit on downloads. This is changed by editing scrape_interval under speedtest in /prometheus/prometheus.yml.

Once configurations are done let's start it up. From the /prometheus project directory run the following command:

$ docker-compose up -d

That's it. docker-compose builds the entire Grafana and Prometheus stack automagically.

The Grafana Dashboard is now accessible via: http://<Host IP Address>:3030 for example http://localhost:3030

username - admin password - wonka (Password is stored in the config.monitoring env file)

The DataSource and Dashboard for Grafana are automatically provisioned.

If all works it should be available at http://localhost:3030/d/o9mIe_Aik/internet-connection - if no data shows up try change the timeduration to something smaller.

Interesting urls

Note: replace localhost with your docker host ip/name if not running this locally.

http://localhost:9090/targets shows status of monitored targets as seen from prometheus - in this case which hosts being pinged and speedtest. note: speedtest will take a while before it shows as UP as it takes ~30s to respond.

http://localhost:9090/graph?g0.expr=probe_http_status_code&g0.tab=1 shows prometheus value for probe_http_status_code for each host. You can edit/play with additional values. Useful to check everything is okey in prometheus (in case Grafana is not showing the data you expect).

http://localhost:9115 blackbox exporter endpoint. Lets you see what have failed/succeded.

http://localhost:9696/metrics speedtest exporter endpoint. Does take ~30 seconds to shohw its result as it runs an actual speedtest when requested.