Installing and configuring your cluster
Installing and running Elasticsearch even in production environments is very easy nowadays, compared to how it was in the days of Elasticsearch 0.20.x. From a system that is not ready to one with Elasticsearch, there are only a few steps that one needs to go. We will explore these steps in the following section:
Installing Java
Elasticsearch is a Java application and to use it we need to make sure that the Java SE environment is installed properly. Elasticsearch requires Java Version 7 or later to run. You can download it from http://www.oracle.com/technetwork/java/javase/downloads/index.html. You can also use OpenJDK (http://openjdk.java.net/) if you wish. You can, of course, use Java Version 7, but it is ...
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