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144 lines
8.8 KiB
Markdown
144 lines
8.8 KiB
Markdown
---
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aliases:
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- ../../configure-alertmanager/ # /docs/grafana/<GRAFANA_VERSION>/configure-alertmanager/
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- ../unified-alerting/fundamentals/alertmanager/ # /docs/grafana/<GRAFANA_VERSION>/alerting/unified-alerting/fundamentals/alertmanager/
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- ../manage-notifications/alertmanager/ # /docs/grafana/<GRAFANA_VERSION>/alerting/manage-notifications/alertmanager/
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- ../fundamentals/alertmanager/ # /docs/grafana/<GRAFANA_VERSION>/alerting/fundamentals/alertmanager/
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- ../fundamentals/notifications/alertmanager/ # /docs/grafana/<GRAFANA_VERSION>/alerting/fundamentals/notifications/alertmanager
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canonical: https://grafana.com/docs/grafana/latest/alerting/set-up/configure-alertmanager/
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description: Learn about Alertmanagers and set up Alerting to use other Alertmanagers
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keywords:
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- grafana
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- alerting
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- set up
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- configure
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- external Alertmanager
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labels:
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products:
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- cloud
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- enterprise
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- oss
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title: Configure Alertmanagers
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weight: 200
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refs:
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configure-grafana-alerts-notifications:
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- pattern: /docs/grafana/
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destination: /docs/grafana/<GRAFANA_VERSION>/alerting/alerting-rules/create-grafana-managed-rule/#configure-notifications
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- pattern: /docs/grafana-cloud/
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destination: /docs/grafana-cloud/alerting-and-irm/alerting/alerting-rules/create-grafana-managed-rule/#configure-notifications
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configure-notification-policies:
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- pattern: /docs/grafana/
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destination: /docs/grafana/<GRAFANA_VERSION>/alerting/configure-notifications/create-notification-policy/
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- pattern: /docs/grafana-cloud/
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destination: /docs/grafana-cloud/alerting-and-irm/alerting/configure-notifications/create-notification-policy/
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alertmanager-contact-point:
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- pattern: /docs/grafana/
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destination: /docs/grafana/<GRAFANA_VERSION>/alerting/configure-notifications/manage-contact-points/integrations/configure-alertmanager/
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- pattern: /docs/grafana-cloud/
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destination: /docs/grafana-cloud/alerting-and-irm/alerting/configure-notifications/manage-contact-points/integrations/configure-alertmanager/
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alertmanager-data-source:
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- pattern: /docs/grafana/
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destination: /docs/grafana/<GRAFANA_VERSION>/datasources/alertmanager/
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- pattern: /docs/grafana-cloud/
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destination: /docs/grafana-cloud/connect-externally-hosted/data-sources/alertmanager/
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notifications:
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- pattern: /docs/grafana/
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destination: /docs/grafana/<GRAFANA_VERSION>/alerting/fundamentals/notifications/
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- pattern: /docs/grafana-cloud/
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destination: /docs/grafana-cloud/alerting-and-irm/alerting/fundamentals/notifications/
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---
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# Configure Alertmanagers
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Grafana Alerting is based on the architecture of the Prometheus alerting system. Grafana sends firing and resolved alerts to an Alertmanager, which is responsible for [handling notifications](ref:notifications). This architecture decouples alert rule evaluation from notification handling, improving scalability.
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{{< figure src="/media/docs/alerting/alerting-alertmanager-architecture.png" max-width="750px" alt="A diagram with the alert generator and alert manager architecture" >}}
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Grafana includes a built-in **Grafana Alertmanager** to handle notifications. This guide shows you how to:
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- Use different [types of Alertmanagers](#types-of-alertmanagers-in-grafana) with Grafana
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- [Add other Alertmanager](#add-an-alertmanager) and [enable it to receive all Grafana-managed alerts](#enable-an-alertmanager-to-receive-grafana-managed-alerts)
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- Use an [Alertmanager as a contact point]() to route specific alerts
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## Alertmanager resources
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It’s important to note that each Alertmanager manages its own independent alerting resources, such as:
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- Contact points and notification templates
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- Notification policies and mute timings
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- Silences
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- Active notifications
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Use the `Choose Alertmanager` dropdown on these pages to switch between Alertmanagers and view or manage their resources.
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{{< figure src="/media/docs/alerting/alerting-choose-alertmanager.png" max-width="750px" alt="A screenshot choosing an Alertmanager in the notification policies UI" >}}
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## Types of Alertmanagers in Grafana
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Grafana can be configured to handle alert notifications using various Alertmanagers.
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- **Grafana Alertmanager**: Grafana includes a built-in Alertmanager that extends the [Prometheus Alertmanager](https://prometheus.io/docs/alerting/latest/alertmanager/). This is the default Alertmanager and is referred to as "Grafana" in the user interface. It can only handle Grafana-managed alerts.
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- **Cloud Alertmanager**: Each Grafana Cloud instance comes preconfigured with an additional Alertmanager (`grafanacloud-STACK_NAME-ngalertmanager`) from the Mimir (Prometheus) instance running in the Grafana Cloud Stack.
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The Cloud Alertmanager is available exclusively in Grafana Cloud and can handle both Grafana-managed and data source-managed alerts.
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Some Grafana Cloud services, such as **Kubernetes Monitoring** and **Synthetic Monitoring** use the Cloud Alertmanager to create and manage alerts.
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- **Other Alertmanagers**: Grafana Alerting also supports sending alerts to other Alertmanagers, such as the [Prometheus Alertmanager](https://prometheus.io/docs/alerting/latest/alertmanager/), which can handle both Grafana-managed and data source-managed alerts.
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Grafana Alerting supports using a combination of Alertmanagers and can [enable other Alertmanagers to receive Grafana-managed alerts](#enable-an-alertmanager-to-receive-grafana-managed-alerts). The decision often depends on your alerting setup and where your alerts are generated.
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For example, if you already have an Alertmanager running in your on-premises or cloud infrastructure to handle Prometheus alerts, you can forward Grafana-managed alerts to the same Alertmanager for unified notification handling.
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## Add an Alertmanager
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Alertmanagers should be configured as data sources using Grafana Configuration from the main Grafana navigation menu. To add an Alertmanager, complete the following steps.
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{{< docs/shared lookup="alerts/add-alertmanager-ds.md" source="grafana" version="<GRAFANA_VERSION>" >}}
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For provisioning instructions, refer to the [Alertmanager data source documentation](ref:alertmanager-data-source).
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After adding an Alertmanager, you can use the Grafana Alerting UI to manage notification policies, contact points, silences, and other alerting resources from within Grafana.
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{{< admonition type="note" >}}
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When using Prometheus, you can manage silences in the Grafana Alerting UI. However, other Alertmanager resources such as contact points, notification policies, and templates are read-only because the Prometheus Alertmanager HTTP API does not support updates for these resources.
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{{< /admonition >}}
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When using multiple Alertmanagers, use the `Choose Alertmanager` dropdown to switch between Alertmanagers.
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## Enable an Alertmanager to receive Grafana-managed alerts
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After enabling **Receive Grafana Alerts** in the Data Source Settings, you must also configure the Alertmanager in the Alerting Settings page. Grafana supports enabling one or multiple Alertmanagers to receive all generated Grafana-managed alerts.
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1. In the left-side menu, click **Alerts & IRM** and then **Alerting**.
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1. Click **Settings** to view the list of configured Alertmanagers.
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1. For the selected Alertmanager, click the **Enable/Disable** button to toggle receiving Grafana-managed alerts. When activated, the Alertmanager displays `Receiving Grafana-managed alerts`.
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{{< figure src="/media/docs/alerting/grafana-alerting-settings.png" max-width="750px" alt="Grafana Alerting Settings page" >}}
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All Grafana-managed alerts are forwarded to Alertmanagers marked as `Receiving Grafana-managed alerts`.
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{{< admonition type="note" >}}
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Grafana Alerting does not support forwarding Grafana-managed alerts to the AlertManager in Amazon Managed Service for Prometheus. For more details, refer to [this GitHub issue](https://github.com/grafana/grafana/issues/64064).
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{{< /admonition >}}
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## Use an Alertmanager as a contact point to receive specific alerts
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The previous instructions enable sending **all** Grafana-managed alerts to an Alertmanager.
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To send **specific** alerts to an Alertmanager, configure the Alertmanager as a contact point. You can then assign this contact point to notification policies or individual alert rules.
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For detailed instructions, refer to:
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- [Alertmanager contact point](ref:alertmanager-contact-point)
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- [Configure Grafana-managed alert rules](ref:configure-grafana-alerts-notifications)
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- [Configure notification policies](ref:configure-notification-policies)
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## Manage Alertmanager configurations
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On the Settings page, you can also manage your Alertmanager configurations.
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- Manage version snapshots for the built-in Alertmanager, which allows administrators to roll back unintentional changes or mistakes in the Alertmanager configuration.
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- Compare the historical snapshot with the latest configuration to see which changes were made.
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