Grafana Dashboards for a LOFAR 2.0 station

These dashboards show the state of a single station. They are tailored to be installed:

• Locally on a station, through https://git.astron.nl/lofar2.0/tango/-/tree/master/docker/grafana
• Centrally to monitor a group of stations, through https://git.astron.nl/lofar2.0/operations-central-management/-/tree/main/grafana-central/dashboards

Environment variables

This container uses the following environment variables upon starting for configuration

1. SLACK_TOKEN: Authentication token for slack alarms

Datasources

The Grafana installation in this repo exposes and uses the following data sources, as configured in the dashboards/ directory:

• Prometheus, at http://prometheus:9090, serving metrics,
• Loki, at http://loki:3100, serving logs,
• Alerta, at http://alerta-server:8080, serving the Alerta HTTP API,
• Grafana, serving its own HTTP API.

Development

To cover both these use cases, the designer must consider:

• Using a host="$station" filter to make sure that centrally, the selected station is shown. On a specific station, this will default to host="localhost",
• Deploying changes on all stations as well as centrally.

Deployment

To deploy changes, they must be:

1. Commit to this repository,
2. The submodules in the tango and operations-central-management repositories must link to the new commit,
3. Those repositories need to be redeployed on the stations and centrally, respectively.