I am working to install elastic search on a LINUX box. As I understand, there are couple of options like tar and RPM. I am not sure on difference between those two. I find tar very easy to download and unzip... Please help explain when you chose tar vs RPM or other options.
Also - I have multiple JRE versions on my servers. Is there a way to specify JRE path to Elastic configuration? At this point I exported JAVA_HOME and started Elastic Search?