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Click the Add Host button above the hosts. Follow the prompts like the install guide found on the hadoop installation page.Add jobs such as TaskTracker and DateNode to add another map reduce agent
Once the hosts have been added go to Services>hdfs1>Instances>Add, and select DataNode for all of the new hosts, Continue. Ensure the directories all start "/mnt", Accept Changes. Once complete, check the new nodes are now running HDFS (Datanodes) from Instances.
Then go to Services>mapreduce1>TaskTracker>Continue to instances page>Add, and select TaskTracker for all of the new hosts, Continue. Ensure the directories all start "/mnt", Accept Changes. Once complete, check the new nodes are now running HDFS (Datanodes) from Instances.
Finally go to services, Generate Client Configuration, Download result data. Distribute this to all the nodes' "/opt/hadoop-infinite/mapreduce/hadoop/" directory.
Removing a Node:
First you must stop all the services of the node you wish to remove. Navigate to Services at the top navigation bar.
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