Oracle Cloud Infrastructure Documentation

Horizontally Resizing a Search with OpenSearch Cluster

Horizontally resize an OpenSearch cluster to increase or decrease the number of nodes for the cluster.

This form of scaling lets you to improve the availability and resiliency of clusters.

Before you resize a cluster, review Limitations and Considerations.

Note

In-place horizontal resizing allows the cluster to continue accepting reads and writes. Other resize operations can temporarily place the cluster in read-only mode. Increasing data-node storage without changing other settings doesn't require read-only mode. Cluster performance and individual requests can be affected during resizing.For more information, see Cluster Patching and Resize Operations.

For information on node hardware settings, see OpenSearch Node Types.

    1. On the Clusters list page, select the OpenSearch cluster that you want to work with. If you need help finding the list page or the cluster, see Listing Clusters.
    2. On the OpenSearch cluster's details page, select Resize.
      The Resize panel opens.
    3. Select the Horizontal option.
    4. Update the settings associated with the resizing option you chose. For descriptions of these settings, see Creating a Search with OpenSearch Cluster.
    5. Select Resize.

  • Use the resizehorizontal command and required parameters to horizontally resize a cluster:

    oci opensearch cluster resizehorizontal --opensearch-cluster-id cluster_ocid [OPTIONS]

    For a complete list of parameters and values for CLI commands, see the CLI Command Reference.

  • Run ResizeOpensearchClusterHorizontal operation to horizontally resize a cluster.