I have used the Elasticsearch Version 2.0.0 in this book; you can choose to install other versions, if you wish to. You just need to replace the version number with 2.0.0. You need to have an administrative account to perform the installations and configurations.
Let's get started with installing Elasticsearch on Ubuntu Linux. The steps will be the same for all Ubuntu versions:
sudo dpkg -i elasticsearch-2.0.0.deb