opensearch-docs-cn/_monitoring-plugins/alerting/index.md

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---
layout: default
title: Alerting
nav_order: 34
has_children: true
redirect_from:
- /monitoring-plugins/alerting/
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---
# Alerting
OpenSearch Dashboards
{: .label .label-yellow :}
The alerting feature notifies you when data from one or more OpenSearch indices meets certain conditions. For example, you might want to notify a [Slack](https://slack.com/) channel if your application logs more than five HTTP 503 errors in one hour, or you might want to page a developer if no new documents have been indexed in the past 20 minutes.
To get started, choose **Alerting** in OpenSearch Dashboards.
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![OpenSearch Dashboards side bar with link]({{site.url}}{{site.baseurl}}/images/alerting.png)