mirror of https://github.com/grafana/grafana
docs(alerting): simplify Intro to Grafana Alerting docs (#106944)
* docs(alerting): improve `Intro > Alert rule evaluation` docs * Update Introduction to Grafana Alerting * Simplify `Intro > Alert rules` and related docs * minor copy change phrasing GMA and DS differences * fix vale errorpull/105632/head^2
Pepe Cano
23 hours ago
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canonical: https://grafana.com/docs/grafana/latest/alerting/fundamentals/alert-rule-evaluation/alert-rule-state-and-health/ |
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description: An alert instance is considered stale when its series disappears for a number of consecutive evaluation intervals. Learn how Grafana resolves them. |
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keywords: |
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- grafana |
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- alerting |
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- guide |
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- state |
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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: Alert rule state and health |
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weight: 130 |
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refs: |
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example-multi-dimensional-alerts: |
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- pattern: /docs/grafana/ |
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destination: /docs/grafana/<GRAFANA_VERSION>/alerting/best-practices/multi-dimensional-alerts/ |
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- pattern: /docs/grafana-cloud/ |
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destination: /docs/grafana-cloud/alerting-and-irm/alerting/best-practices/multi-dimensional-alerts/ |
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alert-instance-states: |
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- pattern: /docs/grafana/ |
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destination: /docs/grafana/<GRAFANA_VERSION>/alerting/fundamentals/alert-rule-evaluation/nodata-and-error-states/#alert-instance-states |
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- pattern: /docs/grafana-cloud/ |
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destination: /docs/grafana-cloud/alerting-and-irm/alerting/fundamentals/alert-rule-evaluation/nodata-and-error-states/#alert-instance-states |
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--- |
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# Alert rule state and health |
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Each alert rule can generate one or more alert instances—one alert instance for each series or dimension, as shown in the [multi-dimensional alert example](ref:example-multi-dimensional-alerts). |
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Each alert instance of the same alert rule represents a different target and can be in a different state; for example, one alert instance may be **Normal** while another is **Alerting**. |
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{{< figure src="/media/docs/alerting/alert-rule-example-multiple-alert-instances.png" max-width="750px" alt="Multi dimensional alert rule. The alert rule state and alert rule health are determined by the state of the alert instances." >}} |
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The alert rule state and alert rule health are determined by the [state of the alert instances](ref:alert-instance-states). |
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## Alert rule states |
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An alert rule can be in either of the following states: |
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| State | Description | |
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| ----------- | ---------------------------------------------------------------------------------------------------- | |
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| **Normal** | None of the alert instances returned by the evaluation engine is in a `Pending` or `Alerting` state. | |
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| **Pending** | At least one alert instances returned by the evaluation engine is `Pending`. | |
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| **Firing** | At least one alert instances returned by the evaluation engine is `Alerting`. | |
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## Alert rule health |
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An alert rule can have one of the following health statuses: |
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| State | Description | |
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| ---------------------- | -------------------------------------------------------------------------------------------------------- | |
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| **Ok** | No error when evaluating the alert rule. | |
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| **Error** | An error occurred when evaluating the alert rule. | |
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| **No Data** | The alert rule query returns no data. | |
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| **{status}, KeepLast** | The rule would have received another status but was configured to keep the last state of the alert rule. | |
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@ -0,0 +1,37 @@ |
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--- |
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canonical: https://grafana.com/docs/grafana/latest/alerting/fundamentals/alert-rule-evaluation/evaluation-within-a-group/ |
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description: An alert instance is considered stale when its series disappears for a number of consecutive evaluation intervals. Learn how Grafana resolves them. |
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keywords: |
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- grafana |
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- alerting |
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- guide |
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- state |
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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: How rules are evaluated within a group |
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menuTitle: Evaluation within a group |
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weight: 150 |
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refs: |
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import-ds-rules: |
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- pattern: /docs/grafana/ |
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destination: /docs/grafana/<GRAFANA_VERSION>/alerting/alerting-rules/alerting-migration/ |
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- pattern: /docs/grafana-cloud/ |
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destination: /docs/grafana-cloud/alerting-and-irm/alerting/alerting-rules/alerting-migration/ |
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--- |
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# How rules are evaluated within a group |
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Each evaluation group contains an **evaluation interval** that determines how frequently the rule is evaluated. For instance, the evaluation may occur every `10s`, `30s`, `1m`, `10m`, etc. |
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Rules in different evaluation groups can be evaluated simultaneously. |
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Rules within the same evaluation group can be evaluated simultaneously or sequentially, depending on the rule type: |
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- **Grafana-managed** rules within the same group are evaluated concurrently—they are evaluated at different times over the same evaluation interval but display the same evaluation timestamp. |
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- **Data source-managed** rules within the same group are evaluated sequentially, one after the other—this is useful to ensure that recording rules are evaluated before alert rules. |
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- **Grafana-managed rules [imported from data source-managed rules](ref:import-ds-rules)** are also evaluated sequentially. |
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--- |
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labels: |
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products: |
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- oss |
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title: 'Note Prometheus data source-managed rules' |
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--- |
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> Rules from a Prometheus data source appear in the **Data source-managed** section of the **Alert rules** page when [Manage alerts via Alerting UI](ref:shared-configure-prometheus-data-source-alerting) is enabled. |
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> |
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> However, Grafana can only create and edit data source-managed rules for Mimir and Loki, not for a Prometheus instance. |
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