How can I disable "no data" alerts?

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How can I disable alerts being sent out when the data source has no data?

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To disable alerts being sent out when the data source has no data, you can modify the alert rule configuration to handle the No Data state differently. Here are the steps you can follow:

  1. Modify the No Data State Setting:
  2. Go to the alert rule configuration in Grafana.
  3. Look for the setting that handles the No Data state. This is often labeled as "Alert state if no data or all values are null."

  4. Change this setting to Normal or Keep Last State to prevent the alert from firing when there is no data. Setting it to Normal will treat the absence of data as a non-alerting condition, while Keep Last State will maintain the last known state of the alert.

  5. Use Silences:

  6. If you are still receiving alerts, you can create a silence for alerts with the label alertname=DatasourceNoData. This will prevent notifications for these specific alerts.

  7. Check Notification Policies:

  8. Ensure that your notification policies are not configured to send alerts for No Data states. You might need to adjust these policies to exclude such alerts.

  9. Review Alert Rule Logic:

  10. Make sure that your alert rule logic does not inadvertently trigger alerts when there is no data. This might involve reviewing the query and conditions used in the alert rule.

  11. Consider Upgrading or Patching:

  12. If you are experiencing issues with alerts not behaving as expected, consider upgrading to the latest version of Grafana, as there might be bug fixes related to alerting behavior.

By following these steps, you should be able to configure your alerts to not trigger when there is no data from the data source. If you continue to experience issues, it might be helpful to check the Grafana logs for any errors or unusual behavior related to alerting.

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