Adding Worker or Edge Nodes to a Cluster

When you add worker, compute only worker, master, utility, or edge nodes to a Big Data Service cluster, you expand both compute and storage. The new nodes use the same instance shape and amount of block storage as the existing worker nodes in the cluster.

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 Clusters in a Compartment.
2. From the Actions menu (three dots) for the cluster, select Add nodes.
3. In the Add nodes panel, enter the following details:
  
  Node type: Select the node type. For more information about the types of nodes, see Planning and Understanding ODH Clusters.
  
  Worker: A cluster must have at least three worker nodes.
  
  Compute only worker: You can't add a compute only worker node while creating a cluster. Therefore, when you add a compute only worker node for the first time, you can update the shape and block storage size. After they're updated, these fields become read-only.
  
  Edge: You can't add an edge node while creating a cluster. Therefore, when you add an edge node for the first time, you can update the shape and block storage size. After they're updated, these fields become read-only.
  
  Master: You can't add a master node while creating a cluster. You can't customize the shape and block storage size while adding a new master node to an existing cluster. However, the new master node automatically adopts the shape and block storage size of the existing master node. After added, you can update the shape through Changing the Shape of a Cluster Node. After being changed, these fields become read-only, similar to the original master nodes.
  
  Utility: You can't add a utility node while creating a cluster. You can't customize the shape and block storage size while adding a new utility node to an existing cluster. However, the new utility node automatically adopts the shape and block storage size of the existing master node. After added, you can update the shape through Changing the Shape of a Cluster Node. After being changed, these fields become read-only, similar to the original utility nodes.
  
  Node shape: This read-only field displays the shape used for the existing worker nodes. This shape is used for all the nodes that you add. For information about the shapes, see Understanding Instance Types and Shapes.
  
  Block storage per node: This read-only field displays the block storage used for the existing worker nodes. The same amount of storage is used for all the nodes that you add.
  
  Number of worker nodes: Enter the number of worker nodes or compute only worker nodes to add to the cluster. A cluster can have from 3 to 256 worker nodes. An ODH cluster can have from 0 to 256 compute worker nodes.
  
  Cluster admin password: Enter the administration password for the cluster.
4. Select Add.
Use the oci bds instance worker-nodes add command increases the size (scales out) of a cluster by adding worker nodes (data/compute). The added worker nodes have the same shape and amount of attached block storage as other worker nodes in the cluster.
Command
oci bds instance worker-nodes add --bds-instance-id <bds_instance_id> --cluster-admin-password <cluster_admin_password> --node-type <node_type> --number-of-worker-nodes <number_of_worker_nodes> [OPTIONS]
[OPTIONS]
For a complete list of flags and variable options for CLI commands, see the Command Line Reference for Big Data.
Use the AddWorkerNodes operation to add worker to Edge nodes to a cluster.

Oracle Cloud Infrastructure Documentation

Adding Worker or Edge Nodes to a Cluster