I am trying to understand how to better configure my ELS Cluster.
From what I understand, a node is an Elasticsearch instance (please correct me if I`m wrong).
What I want to know is:
Should each node be an idependent hardware? Or I can have multiple nodes on the same machine?
If I have a cluster with only 1 node, what could be the limitations/drawbacks. For instance, how many indexes can I have (let`s suppose each index is about 1-2GB each at max)
Also, I will be interested to know any other issues that can come with 1 node cluster and what should I consider.