112 lines
5.7 KiB
Markdown
112 lines
5.7 KiB
Markdown
---
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stage: Monitor
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group: Respond
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info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
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---
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# Set up alerts for Prometheus metrics **(FREE)**
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> [Moved](https://gitlab.com/gitlab-org/gitlab/-/issues/42640) to GitLab Free in 12.10.
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After [configuring metrics for your CI/CD environment](index.md), you can set up
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alerting for Prometheus metrics, and
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[trigger actions from alerts](#trigger-actions-from-alerts) to notify
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your team when environment performance falls outside of the boundaries you set.
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## Prometheus cluster integrations
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Alerts are not currently supported for [Prometheus cluster integrations](../../user/clusters/integrations.md).
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## External Prometheus instances
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> [Moved](https://gitlab.com/gitlab-org/gitlab/-/issues/42640) to GitLab Free in 12.10.
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For manually configured Prometheus servers, GitLab provides a notify endpoint for
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use with Prometheus webhooks. If you have manual configuration enabled, an
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**Alerts** section is added to **Settings > Integrations > Prometheus**.
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This section contains the needed **URL** and **Authorization Key**. The
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**Reset Key** button invalidates the key and generates a new one.
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To send GitLab alert notifications, copy the **URL** and **Authorization Key** into the
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[`webhook_configs`](https://prometheus.io/docs/alerting/latest/configuration/#webhook_config)
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section of your Prometheus Alertmanager configuration:
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```yaml
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receivers:
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- name: gitlab
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webhook_configs:
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- http_config:
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authorization:
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type: Bearer
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credentials: 9e1cbfcd546896a9ea8be557caf13a76
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send_resolved: true
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url: http://192.168.178.31:3001/root/manual_prometheus/prometheus/alerts/notify.json
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# Rest of configuration omitted
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# ...
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```
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For GitLab to associate your alerts with an [environment](../../ci/environments/index.md),
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you must configure a `gitlab_environment_name` label on the alerts you set up in
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Prometheus. The value of this should match the name of your environment in GitLab.
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You can display alerts with a `gitlab_environment_name` of `production`
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[on a dashboard](../../user/operations_dashboard/index.md#adding-a-project-to-the-dashboard).
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In GitLab versions 13.1 and greater, you can configure your manually configured
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Prometheus server to use the
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[Generic alerts integration](../incident_management/integrations.md).
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## Trigger actions from alerts **(ULTIMATE)**
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Alerts can be used to trigger actions, like opening an issue automatically
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(disabled by default since `13.1`). To configure the actions:
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1. Navigate to your project's **Settings > Monitor > Alerts**.
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1. Enable the option to create issues.
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1. Choose the [issue template](../../user/project/description_templates.md) to create the issue from.
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1. Optionally, select whether to send an email notification to the developers of the project.
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1. Click **Save changes**.
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After enabling, GitLab automatically opens an issue when an alert is triggered containing
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values extracted from the [`alerts` field in webhook payload](https://prometheus.io/docs/alerting/latest/configuration/#webhook_config):
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- Issue author: `GitLab Alert Bot`
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- Issue title: Extracted from the alert payload fields `annotations/title`, `annotations/summary`, or `labels/alertname`.
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- Issue description: Extracted from alert payload field `annotations/description`.
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- Alert `Summary`: A list of properties from the alert's payload.
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- `starts_at`: Alert start time from the payload's `startsAt` field
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- `full_query`: Alert query extracted from the payload's `generatorURL` field
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- Optional list of attached annotations extracted from `annotations/*`
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- Alert [GFM](../../user/markdown.md): GitLab Flavored Markdown from the payload's `annotations/gitlab_incident_markdown` field.
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- Alert Severity ([Introduced](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/50871) in GitLab version 13.9):
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Extracted from the alert payload field `labels/severity`. Maps case-insensitive
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value to [Alert's severity](../incident_management/alerts.md#alert-severity):
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- **Critical**: `critical`, `s1`, `p1`, `emergency`, `fatal`, or any value not in this list
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- **High**: `high`, `s2`, `p2`, `major`, `page`
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- **Medium**: `medium`, `s3`, `p3`, `error`, `alert`
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- **Low**: `low`, `s4`, `p4`, `warn`, `warning`
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- **Info**: `info`, `s5`, `p5`, `debug`, `information`, `notice`
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To further customize the issue, you can add labels, mentions, or any other supported
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[quick action](../../user/project/quick_actions.md) in the selected issue template,
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which applies to all incidents. To limit quick actions or other information to
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only specific types of alerts, use the `annotations/gitlab_incident_markdown` field.
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Since [version 12.2](https://gitlab.com/gitlab-org/gitlab-foss/-/issues/63373),
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GitLab tags each incident issue with the `incident` label automatically. If the label
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does not yet exist, it is also created automatically.
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If the metric exceeds the threshold of the alert for over 5 minutes, GitLab sends
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an email to all [Maintainers and Owners](../../user/permissions.md#project-members-permissions)
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of the project.
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### Recovery alerts
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> [From GitLab 12.5](https://gitlab.com/gitlab-org/gitlab/-/issues/13401), when GitLab receives a recovery alert, it automatically closes the associated issue.
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The alert in GitLab will be automatically resolved when Prometheus
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sends a payload with the field `status` set to `resolved`.
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You can also configure the associated [incident to be closed automatically](../incident_management/incidents.md#automatically-close-incidents-via-recovery-alerts) when the alert resolves.
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