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Scale an OpenSearch cluster

In an OpenSearch Managed Database cluster, you can add or delete a node group.

You can also scale a node group:

  • increase the number of nodes in a group — in a node group with the Data role, you can increase the number of nodes up to ten;
  • change the node group configuration — increase vCPU, RAM, or disk size. You can select a configuration from a different configuration line, but the disk type used must match and the disk size must be larger. Configuration change time depends on the amount of data in the cluster.

Add a node group

You can add a node group with the Dashboard role and a second node group with the Data role.

  1. In the Control panel, in the top menu, click Products and select Managed Databases.

  2. Open the Active tab.

  3. Open the database cluster page → Settings tab.

  4. In the Cluster block, click Add node group.

  5. Optional: change the node group name.

  6. Select a node group role — learn more about roles in the OpenSearch node groups instructions.

  7. Select a configuration line.

  8. If you selected a line with custom configurations, specify the number of vCPUs, RAM size, and disk size.

  9. If you selected a line with fixed configurations, select a configuration.

  10. Specify the number of nodes in the group.

  11. Optional: to make group nodes accessible from the internet, select the Enable public access checkbox. A separate public IP address will be assigned to each node in the group.

    If the cluster subnet does not meet the requirements, enabling public access is unavailable. You can connect a public IP address after adding the group.

  12. Click Save.

Scale a node group

Scale the node group when users are least active.

  1. In the Control panel, in the top menu, click Products and select Managed Databases.

  2. Open the Active tab.

  3. Open the database cluster page → Settings tab.

  4. In the menu of the node group, select Change configuration.

  5. Scale the node group. You can:

    • select a configuration only with a disk size larger than in the previous configuration;
    • increase the number of vCPUs, RAM, and disk size in the custom configuration line;
    • select a configuration from another configuration line, but the disk type used must match and the disk size must be larger;
    • increase the number of nodes.

  6. Click Save.

Delete a node group

You can only delete a node group with the Dashboard role. Node groups with the Manager and Data roles cannot be deleted.

  1. In the Control panel, in the top menu, click Products and select Managed Databases.
  2. Open the Active tab.
  3. Open the database cluster page → Settings tab.
  4. In the menu of the node group, select Delete.
  5. Enter the node group name to confirm.
  6. Click Delete.