Using alert rules to control when Health Log Analytics generates alerts

---
title: Using alert rules to control when Health Log Analytics generates alerts
description: Alert rules enable you to set conditions that determine when Health Log Analytics \(HLA\) triggers an alert.
locale: en-US
canonical_url: https://www.servicenow.com/docs/r/it-operations-management/health-log-analytics/hla-alert-rules-manage.html
release: brazil
product: Health Log Analytics
classification: health-log-analytics
topic_type: concept
last_updated: "2026-09-10"
reading_time_minutes: 1
keywords: [Health Log Analytics, alert rules, custom alert rules, log analytics alerts, anomaly detection, alert thresholds, alert conditions, log data, metric alerts, alert configuration, alert management]
breadcrumb: [Managing alert generation, prioritization, anomaly detection, Health Log Analytics, ITOM AIOps, IT Operations Management]
---

# Using alert rules to control when Health Log Analytics generates alerts

Alert rules enable you to set conditions that determine when Health Log Analytics \(HLA\) triggers an alert.

HLA detects anomalies automatically by learning from your log data. However, some log types need custom alert rules to generate alerts reliably. For more information, see [Alert rules in Health Log Analytics](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/brazil/markdown/it-operations-management/health-log-analytics/hla-custom-alert-rules.md).

You can define, change, or delete custom alert rules:

-   [Define a custom Log Analytics alert rule in Health Log Analytics](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/brazil/markdown/it-operations-management/health-log-analytics/hla-op-alert-rule-add-sow.md)

    Define a Log Analytics alert rule for log data that is not generating alerts automatically.

-   [Change a custom Log Analytics alert rule in Health Log Analytics](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/brazil/markdown/it-operations-management/health-log-analytics/hla-op-defined-alert-modify-sow.md)

    Edit a Log Analytics alert rule that you have defined.

-   [Delete a custom Log Analytics alert rule in Health Log Analytics](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/brazil/markdown/it-operations-management/health-log-analytics/hla-op-defined-alert-delete-sow.md)

    Delete a Log Analytics alert rule that you have defined if it’s no longer needed.