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# 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-compose/grafana
* Centrally to monitor a group of stations, through https://git.astron.nl/lofar2.0/operations-central-management/-/tree/main/grafana-central/dashboards
## 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. Committed 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.