Oracle Cloud Infrastructure Documentation

Vertically Resizing an OpenSearch Cluster

Vertically resize an OpenSearch cluster to increase or decrease the memory and OCPU resources for the cluster's leader nodes, data nodes, and OpenSearch Dashboard nodes. This form of scaling lets you to adjust the performance of OpenSearch clusters.

For most vertical resizing scenarios, to improve the performance of the cluster, you scale up only the data nodes. To route network traffic more quickly, scale up the leader nodes. If your scenario requires a lot of chart-related work for OpenSearch Dashboard, scale up the OpenSearch Dashboard nodes.

Before you resize a cluster, review Limitations and Considerations.

You can adjust all vertical resize settings during the same vertical resize operation, except for the data node storage setting. You can adjust the data node storage setting only during a vertical resize operation in which no other settings are being changed.

Note

When you resize a cluster, the cluster's search functionality is in read-only mode until the resize operation is complete. See Cluster Patching and Resize Operations. This applies to all vertical and horizontal resize operations, except the operation to adjust the data node storage. When you adjust the storage for a data node during the resize operation, the search functionality stays in read/write mode.
    1. On the Clusters list page, select the cluster that you want to work with. If you need help finding the list page or the cluster, see Listing OpenSearch Clusters.
    2. On the details page, select Resize.
    3. On the Resize panel, select the Vertical option.
    4. Update the settings associated with the resizing option you chose. For descriptions of these settings, see Creating an OpenSearch Cluster.
    5. Select Resize.

    The cluster's search functionality is in read-only mode until the resize operation is complete.

  • Use the resizevertical command and required parameters to vertically resize a cluster:

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

    For a complete list of flags and variable options for CLI commands, see the Command Line Reference.

  • Run ResizeOpensearchClusterVertically operation to vertically resize a cluster.