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* Use relative aliases for all non-current Grafana aliases
Prevents non-latest documentation "stealing" the page away from latest
and through permanent redirects for latest pages that no longer exist.
The redirected pages are indexed by search engines but our robots.txt
forbids them crawling the non-latest page.
Signed-off-by: Jack Baldry <jack.baldry@grafana.com>
* Remove aliases from shared pages
Signed-off-by: Jack Baldry <jack.baldry@grafana.com>
* Rewrite all current latest aliases to be next
Signed-off-by: Jack Baldry <jack.baldry@grafana.com>
* Fix typo in latest alias
Signed-off-by: Jack Baldry <jack.baldry@grafana.com>
* Remove all current page aliases
find docs/sources -type f -name '*.md' -exec sed -z -i 's#\n *- /docs/grafana/next/[^\n]*\n#\n#' {} \;
find docs/sources -type f -name '*.md' -exec sed -Ez -i 's#\n((aliases:\n *-)|aliases:\n)#\n\2#' {} \;
Signed-off-by: Jack Baldry <jack.baldry@grafana.com>
* Prettier
Signed-off-by: Jack Baldry <jack.baldry@grafana.com>
Signed-off-by: Jack Baldry <jack.baldry@grafana.com>
32 lines
2.7 KiB
Markdown
32 lines
2.7 KiB
Markdown
---
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title: Grafana managed alerts
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---
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## Clustering
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The current alerting system doesn't support high availability. Alert notifications are not deduplicated and load balancing is not supported between instances; for example, silences from one instance will not appear in the other.
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## Alert evaluation
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Grafana managed alerts are evaluated by the Grafana backend. Rule evaluations are scheduled, according to the alert rule configuration, and queries are evaluated by an engine that is part of core Grafana.
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Alerting rules can only query backend data sources with alerting enabled:
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- builtin or developed and maintained by grafana: `Graphite`, `Prometheus`, `Loki`, `InfluxDB`, `Elasticsearch`,
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`Google Cloud Monitoring`, `Cloudwatch`, `Azure Monitor`, `MySQL`, `PostgreSQL`, `MSSQL`, `OpenTSDB`, `Oracle`, and `Azure Data Explorer`
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- any community backend data sources with alerting enabled (`backend` and `alerting` properties are set in the [plugin.json]({{< relref "../../developers/plugins/metadata/" >}}))
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## Metrics from the alerting engine
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The alerting engine publishes some internal metrics about itself. You can read more about how Grafana publishes [internal metrics]({{< relref "../../setup-grafana/set-up-grafana-monitoring/" >}}). See also, [View alert rules and their current state]({{< relref "../../alerting/fundamentals/state-and-health/" >}}).
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| Metric Name | Type | Description |
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| ------------------------------------------- | --------- | ---------------------------------------------------------------------------------------- |
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| `alerting.alerts` | gauge | How many alerts by state |
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| `alerting.request_duration_seconds` | histogram | Histogram of requests to the Alerting API |
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| `alerting.active_configurations` | gauge | The number of active, non default alertmanager configurations for grafana managed alerts |
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| `alerting.rule_evaluations_total` | counter | The total number of rule evaluations |
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| `alerting.rule_evaluation_failures_total` | counter | The total number of rule evaluation failures |
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| `alerting.rule_evaluation_duration_seconds` | summary | The duration for a rule to execute |
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| `alerting.rule_group_rules` | gauge | The number of rules |
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