Resize a cluster

The resize option allows you to add or remove cluster nodes.

To resize a cluster, follow these steps.

	Note
	Cluster resizing is not supported for HDF clusters.

Steps

1. Browse to the cluster details.
2. Click Actions and select Resize. The cluster resize dialog is displayed.
3. Using the +/- controls, adjust the number of nodes for a chosen host group.

   	Note
   	You can only modify one host group at a time. It is not possible to resize the Ambari server host group.

4. Click Yes to confirm the scale-up/scale-down.

   While nodes are being added or removed, cluster status changes to “Update In Progress”. Once the operation has completed, cluster status changes back to “Running”.