@ -83,7 +83,7 @@ Grafana-managed rules are the most flexible alert rule type. They allow you to c
Multiple alert instances can be created as a result of one alert rule (also known as a multi-dimensional alerting).
{{% admonition type="note" %}}
For Grafana Cloud, you can create 100 free Grafana-managed alert rules.
For Grafana Cloud Free Forever, you can create up to 100 free Grafana-managed alert rules with each alert rule having a maximum of 1000 alert instances.
{{% /admonition %}}
Grafana managed alert rules can only be edited or deleted by users with Edit permissions for the folder storing the rules.
@ -190,3 +190,13 @@ Note that these alerting high availability metrics are exposed via the `/metrics
```
For more information on monitoring alerting metrics, refer to [Alerting meta-monitoring](ref:meta-monitoring). For a demo, see [alerting high availability examples using Docker Compose](https://github.com/grafana/alerting-ha-docker-examples/).
## Prevent duplicate notifications
In high-availability mode, each Grafana instance runs its own pre-configured alertmanager to handle alert notifications.
When multiple Grafana instances are running, all alert rules are evaluated on each instance. By default, each instance sends firing alerts to its respective alertmanager. This results in notification handling being duplicated across all running Grafana instances.
Alertmanagers in HA mode communicate with each other to coordinate notification delivery. However, this setup can sometimes lead to duplicated or out-of-order notifications. By design, HA prioritizes sending duplicate notifications over the risk of missing notifications.
To avoid duplicate notifications, you can configure a shared alertmanager to manage notifications for all Grafana instances. For more information, refer to [add an external alertmanager](/docs/grafana/<GRAFANA_VERSION>/alerting/set-up/configure-alertmanager/).
"delete-modal-restore-dashboards-text":"This action will mark the dashboard for deletion in 30 days. Your organization administrator can restore it anytime before the 30 days expire.",
"delete-modal-text":"Do you want to delete this dashboard?",
"general":{
"auto-refresh-description":"Define the auto refresh intervals that should be available in the auto refresh list. Use the format '5s' for seconds, '1m' for minutes, '1h' for hours, and '1d' for days (e.g.: '5s,10s,30s,1m,5m,15m,30m,1h,2h,1d').",