Data Lake for Enterprises

Elasticsearch - data node

Any node in the cluster is eligible to become the data node. For big clusters, it is de-facto to have a master dedicated to do that job and not store data (don't be data node along with being master by setting node.data property to false). The main responsibilities are as follows:

• The node that stores data in the form of shards
• Performs indexing, aggregating, and searching data

By setting the property node.master as false, you can make sure that a node will become a data node within the cluster. For an enterprise setup, this is how the cluster in general is set up, and it's more reliable and predictable.