Managing the Cluster Nodes

The steps mentioned in this section are applicable only for the Bootstrap approach to install the Big Data Protector.

Depending on the workload on the EMR cluster, you can add or remove the Big Data Protector nodes. You can either set the cluster to automatically scale or manually add or remove nodes in the EMR cluster. You can add or remove nodes in the EMR cluster either while you create the cluster or after you have created the cluster. Before you add or remove the nodes from the cluster, ensure that you save all your data to S3, as standard practice, to avoid any data loss.

This section covers the procedure to add or remove nodes from an Amazon EMR cluster after you have created it.

To add or remove nodes from an Amazon EMR cluster:

1. On the AWS management console, expand Services and click Analytics.

   The sub-menu appears.

2. From the sub-menu, click EMR.

   The Amazon EMR page appears.

3. Click the required cluster.

   The Properties tab of the cluster appears.

4. Click the Instances tab.

5. To add an instance, perform the following steps:

   1. Under Instance groups, click Add task instance group. The Add task instance group page appears.
   2. In the Name box, enter the name to identify the node.
   3. From the Choose EC2 instance type list, select the required storage type.
   4. In the Instance group size box, enter the required number of instances.
   5. Click Add task instance group. The new instance is added to the node and appears on the Instances tab.

6. To resize an instance, perform the following steps:

   1. Under Instance groups, select the required instance that you want to resize.
   2. Click Resize instance group. The Resize page appears.
   3. In the Instance group size box, enter the required number of instances.
   4. Click Resize. The instance is resized as per the inputs and appears on the Instances tab.