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---
aliases:
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- ../high-availability/
- ../unified-alerting/high-availability/
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description: High availability
keywords:
- grafana
- alerting
- tutorials
- ha
- high availability
Explicitly set all front matter labels in the source files (#71548)
* Set every page to have defaults of 'Enterprise' and 'Open source' labels
Signed-off-by: Jack Baldry <jack.baldry@grafana.com>
* Set administration pages to have of 'Cloud', 'Enterprise', and 'Open source' labels
Signed-off-by: Jack Baldry <jack.baldry@grafana.com>
* Set administration/enterprise-licensing pages to have 'Enterprise' labels
Signed-off-by: Jack Baldry <jack.baldry@grafana.com>
* Set administration/organization-management pages to have 'Enterprise' and 'Open source' labels
Signed-off-by: Jack Baldry <jack.baldry@grafana.com>
* Set administration/provisioning pages to have 'Enterprise' and 'Open source' labels
Signed-off-by: Jack Baldry <jack.baldry@grafana.com>
* Set administration/recorded-queries pages to have labels cloud,enterprise
* Set administration/roles-and-permissions/access-control pages to have labels cloud,enterprise
Signed-off-by: Jack Baldry <jack.baldry@grafana.com>
* Set administration/stats-and-license pages to have labels cloud,enterprise
* Set alerting pages to have labels cloud,enterprise,oss
* Set breaking-changes pages to have labels cloud,enterprise,oss
* Set dashboards pages to have labels cloud,enterprise,oss
* Set datasources pages to have labels cloud,enterprise,oss
* Set explore pages to have labels cloud,enterprise,oss
* Set fundamentals pages to have labels cloud,enterprise,oss
* Set introduction/grafana-cloud pages to have labels cloud
Signed-off-by: Jack Baldry <jack.baldry@grafana.com>
* Fix introduction pages products
Signed-off-by: Jack Baldry <jack.baldry@grafana.com>
* Set panels-visualizations pages to have labels cloud,enterprise,oss
* Set release-notes pages to have labels cloud,enterprise,oss
* Set search pages to have labels cloud,enterprise,oss
* Set setup-grafana/configure-security/audit-grafana pages to have labels cloud,enterprise
Signed-off-by: Jack Baldry <jack.baldry@grafana.com>
* Set setup-grafana/configure-security/configure-authentication pages to have labels cloud,enterprise,oss
* Set setup-grafana/configure-security/configure-authentication/enhanced-ldap pages to have labels cloud,enterprise
* Set setup-grafana/configure-security/configure-authentication/saml pages to have labels cloud,enterprise
* Set setup-grafana/configure-security/configure-database-encryption/encrypt-secrets-using-hashicorp-key-vault pages to have labels cloud,enterprise
* Set setup-grafana/configure-security/configure-request-security pages to have labels cloud,enterprise,oss
Signed-off-by: Jack Baldry <jack.baldry@grafana.com>
* Set setup-grafana/configure-security/configure-team-sync pages to have labels cloud,enterprise
Signed-off-by: Jack Baldry <jack.baldry@grafana.com>
* Set setup-grafana/configure-security/export-logs pages to have labels cloud,enterprise
Signed-off-by: Jack Baldry <jack.baldry@grafana.com>
* Set troubleshooting pages to have labels cloud,enterprise,oss
* Set whatsnew pages to have labels cloud,enterprise,oss
* Apply updated labels from review
Co-authored-by: brendamuir <100768211+brendamuir@users.noreply.github.com>
Co-authored-by: Isabel <76437239+imatwawana@users.noreply.github.com>
---------
Signed-off-by: Jack Baldry <jack.baldry@grafana.com>
Co-authored-by: brendamuir <100768211+brendamuir@users.noreply.github.com>
Co-authored-by: Isabel <76437239+imatwawana@users.noreply.github.com>
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labels:
products:
- cloud
- enterprise
- oss
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title: Alerting high availability
weight: 430
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---
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# Alerting high availability
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The Grafana Alerting system has two main components: a `Scheduler` and an internal `Alertmanager` . The `Scheduler` evaluates your alert rules, while the internal Alertmanager manages **routing** and **grouping** .
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When running Grafana Alerting in high availability, the operational mode of the scheduler remains unaffected, and each Grafana instance evaluates all alerts. The operational change happens in the Alertmanager when it deduplicates alert notifications across Grafana instances.
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{{< figure src = "/static/img/docs/alerting/unified/high-availability-ua.png" class = "docs-image--no-shadow" max-width = "750px" caption = "High availability" > }}
The coordination between Grafana instances happens via [a Gossip protocol ](https://en.wikipedia.org/wiki/Gossip_protocol ). Alerts are not gossiped between instances and each scheduler delivers the same volume of alerts to each Alertmanager.
The two types of messages gossiped between Grafana instances are:
- Notification logs: Who (which instance) notified what (which alert).
- Silences: If an alert should fire or not.
The notification logs and silences are persisted in the database periodically and during a graceful Grafana shut down.
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## Useful links
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[Configure alerting high availability][configure-high-availability]
{{% docs/reference %}}
[configure-high-availability]: "/docs/grafana/ -> /docs/grafana/< GRAFANA VERSION > /alerting/set-up/configure-high-availability"
[configure-high-availability]: "/docs/grafana-cloud/ -> /docs/grafana-cloud/alerting-and-irm/alerting/set-up/configure-high-availability"
{{% /docs/reference %}}
