The first step of the novice is to set up the Elasticsearch server, while an experienced user may just need to upgrade the server to the new version. If you are going to upgrade your server software, read through the Breaking changes section and the Migration between versions section to discover the changes that require your attention.
Elasticsearch is developed in Java. As of writing this book, it is recommended that you use a specific Oracle JDK, version 1.8.0_131. By default, Elasticsearch will use the Java version defined by the JAVA_HOME environment variable. Before installing Elasticsearch, please check the installed Java version.
Elasticsearch is supported on many popular operating systems such as RHEL, Ubuntu, Windows, and Solaris. For information on supported operating systems and product compatibility, see the Elastic Support Matrix at https...
