Is there a way to add nodes to a running Hadoop cluster?

Question

I have been playing with Cloudera and I define the number of clusters before I start my job then use the cloudera manager to make sure everything is running.

I’m w

Answer 1

Updated Answer for Cloudera using CDH 5.8.5 (Hadoop 2.6)-

To add a new node to your cluster, follow these steps on ClouderaManager UI,

1. Click on your cluster name.
2. Go to Hosts List.
3. Once on the hosts page, click 'Add New Hosts to Cluster'.
4. Enter the IP of your host and Search.
5. Keep following the instructions and continue to next steps.
6. Finally assign roles to your new node, for example if it's a data-node,assign only datanode related roles and continue.
7. Finally your new node is added to your cluster. click Finish.