Why number of node increases in Kusto cluster

Tapas Kumar Barik 1 Reputation point
2021-03-07T10:45:07.997+00:00

if number of nodes are suddenly increase 34 to 41 , memory also shows increase 90%. CPU utilization nearly above 25% How all of sudden number node increases in kusto cluser, how to find the reasons

Azure Data Explorer
Azure Data Explorer
An Azure data analytics service for real-time analysis on large volumes of data streaming from sources including applications, websites, and internet of things devices.
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  1. PRADEEPCHEEKATLA-MSFT 84,941 Reputation points Microsoft Employee
    2021-03-09T12:45:47.003+00:00

    Hello @Tapas Kumar Barik ,

    If the number of nodes changes dynamically it means either Optimized autoscale or Custom autoscale was configured on the cluster.

    By using horizontal scaling, you can scale the instance count automatically, based on predefined rules and schedules. To specify the autoscale settings for your cluster:

    1. In the Azure portal, go to your Azure Data Explorer cluster resource. Under Settings, select Scale out.
    2. In the Scale out window, select the autoscale method that you want: Manual scale, Optimized autoscale, or Custom autoscale.

    You can find more details on the logic for scale out here - Manage cluster horizontal scaling (scale out) in Azure Data Explorer to accommodate changing demand.

    Hope this helps. Do let us know if you any further queries.

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