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datasources.md

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Working with data sources

This document describes how to create data sources.

DataSource discovery

The operator uses a list of set based selectors to discover dataSources by their labels. The dataSourceLabelSelector property of the Grafana resource allows you to add selectors by which the dataSources will be filtered.

NOTE: If no datasourceLabelSelector is present, the operator will not discover any dataSources. The same goes for dataSources without labels, they will not be discovered by the operator.

Every selector can have a list of matchLabels and matchExpressions. The rules inside a single selector will be ANDed, while the list of selectors is evaluated with OR.

For example, the following selector:

datasourceLabelSelector:
  - matchExpressions:
      - {key: app, operator: In, values: [grafana]}
      - {key: group, operator: In, values: [grafana]}

requires the dataSource to have two labels, app and group and each label is required to have a value of grafana.

To accept either, the app or the group label, you can write the selector in the following way:

datasourceLabelSelector:
  - matchExpressions:
      - {key: app, operator: In, values: [grafana]}
  - matchExpressions:
      - {key: group, operator: In, values: [grafana]}

Data source properties

Data sources are represented by the GrafanaDataSource custom resource. Examples can be found in deploy/examples/datasources.

The following properties are accepted in the spec:

A data source accepts all properties listed here, but does not support apiVersion and deleteDatasources.