Here's a quick start to stand-up a Docker [Prometheus](http://prometheus.io/) stack containing Prometheus, Grafana with [blackbox-exporter](https://github.com/prometheus/blackbox_exporter) and [speedtest-exporter](https://github.com/stefanwalther/speedtest-exporter) to collect and graph home network connections and speed.
Before we get started installing the Prometheus stack. Ensure you install the latest version of docker and [docker-compose](https://docs.docker.com/compose/install/) on your Docker host machine. This has been tested with Docker for Mac and Synology and it works.
git clone https://github.com/maxandersen/internet-monitoring && cd internet-monitoring/prometheus && docker-compose up && open http://localhost:3030/d/o9mIe_Aik/internet-connection
Goto [http://localhost:3030/d/o9mIe_Aik/internet-connection](http://localhost:3030/d/o9mIe_Aik/internet-connection) (change `localhost` to your docker host ip/name).
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](./prometheus/prometheus.yml).
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.
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.