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auto-stop-clusters.md

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title Automatic stop of inactive clusters in Azure Data Explorer
description Learn when your cluster is due to stop running using the Automatic stop feature, and how to enable/disable the Automatic stop.
ms.reviewer orhasban
ms.topic how-to
ms.date 12/08/2025

Configure automatic stop of inactive Azure Data Explorer clusters

Azure Data Explorer clusters that are inactive for a specified time interval stop automatically. Inactivity means clusters with no data ingestion or queries in the past 5 days. The interval is fixed at 5 days and can't be changed.

Cluster behavior doesn't resume automatically. Restart the cluster manually.

Note

The following cluster types aren't stopped automatically:

Manage automatic stop behavior on your cluster

Azure Data Explorer clusters are created by default with the cluster property enableAutoStop = true. You can set or change this property during or after cluster creation.

Azure portal

Learn more in Azure Data Explorer cluster request body.

Configure auto-stop while creating a new cluster

  1. In the Azure portal, follow the steps in create an Azure Data Explorer cluster and database.
  2. In the Configurations tab, select Auto-Stop cluster > On.

:::image type="content" source="media/auto-stop-clusters/auto-stop-cluster-creation.png" alt-text="Screenshot of auto-stop configuration." :::

Modify settings on an existing cluster

To enable or disable Auto-Stop cluster after the cluster is created:

  1. Sign in to the Azure portal.
  2. Go to your Azure Data Explorer cluster.
  3. In Settings, select Configurations.
  4. In the Configurations pane, select On or Off to enable or disable Auto-Stop cluster.
  5. Select Save.

:::image type="content" source="media/auto-stop-clusters/auto-stop-cluster-update.png" alt-text="Screenshot of auto-stop configuration in the Azure portal.":::

Verify auto-stop using the activity log

When a cluster is automatically stopped, an Activity log is sent. To verify when and how the cluster was stopped, use the following steps:

  1. Sign into the Azure portal.
  2. Browse to Azure Data Explorer cluster.
  3. In the left pane, select Activity log.
  4. Select a timespan.
  5. Under Operation name, find Stop Clusters.

:::image type="content" source="media/auto-stop-clusters/auto-stop-cluster-activity-log.png" alt-text="Screenshot of the activity log.":::

Examples

REST example

Update the cluster with this operation:

PATCH https://management.azure.com/subscriptions/12345678-1234-1234-1234-123456789098/resourceGroups/kustorgtest/providers/Microsoft.Kusto/clusters/kustoclustertest?api-version=2021-08-27

Request body to disable auto-stop

{
    "properties": { 
        "enableAutoStop": false 
    }
}

Request body to enable auto-stop

{
      "properties": {
        "enableAutoStop": true
    }
}